Chinese Chinese | Customer Login | Contact     
View Past Issues  
Media Center



April 20, 2015
Achates Power Opens Metro Detroit Offic
Engine Developer says Detroit is key to serving growing customer base

March 19, 2015
Automotive World
Automotive Megatrends USA 2015 – Review
Organised and hosted by Automotive World, the 2015 edition of Automotive Megatrends USA was attended by 400 delegates from across the automotive industry. Megatrends USA stageAutomotive World’s Megatrends events tackle the issues that will shape the automotive industry over the next ten years and beyond, and attendees at the March 2015 conference held in Dearborn, Michigan, heard insightful and provocative presentations across three streams from a strong line-up of OEMs, suppliers, authorities, thought leaders and other key industry stakeholders.

February 5, 2015
Cruise Control Radio
Achates Power says they have an engine that's 86 percent more efficient than today's gas engines and 30 percent better than modern fuel sipping diesels. We get the goods from President and CEO David Johnson. All that and more when we get rolling on this edition of Cruise Control Radio

February 2015
The Wall Street Journal
The Car of the Future May Run on Gasoline
For all the talk of electric cars, the old-fashioned internal combustion engine is proving to be hard to beat.


December 15, 2014
Automotive World
Rising demand for Achates opposed-piston engine

December 11, 2014
Heavy Duty Trucking
Achates Signs Development Contracts with 2 More Manufacturers
Achates Power Inc., the developer of modern two-stroke, opposed-piston engines, says it has secured another contract with a leading global original-equipment manufacturer. The company now has five customers for whom it is developing variations of its designs.

November 3, 2014
Auto Field Blog
Are Two Strokes Better than Four?
A typical internal combustion engine at work in any car or truck today is a four-stroke: intake, compression, combustion, exhaust. This means that there needs to be things like valves and camshafts and cylinder heads. Two-stroke engines are simpler.

October 31, 2014
Autoline After Hours
An Update on Achates' Revolutionary Engine

October 20, 2014
San Diego Business Journal
Are Electric Cars Really the Future?
You may never drive one, but if Sempra Energy gets its way, you'll be paying for them.

October 20, 2014
San Diego Business Journal
Achates is in The Race for and Engine Contract Worth Up to $20M.
Achates Power Inc. expects to learn by the end of the year whether the U.S. Army wants to continue a relationship which - in the company's view - is humming along nicely.

October 15, 2014
Green Car Reports
Achates Closer To Production Of Radically Efficient Two-Stroke Truck Diesel
Suppose you could take an old engine concept discarded in the 1970s, add modern fuel metering and injection control hardware and software, and offer a compact powerplant that cuts the fuel consumption of today's diesel truck engines by a third..

September, 2014
Automotive World Monthly
Opposed Piston Engines Poised for Launch in the Next Five Years
The two-stroke opposed piston engines that were first developed in the 1930s previously failed to catch on in the automotive market. However, with the opportunities afforded by modern technology, powertrain developers are revisiting old designs and updating them to compete with the more conventional internal combustion engine (ICE) architectures to which OEMs are accustomed today.

September, 2014
Fuel Smarts: Opposed-Piston Diesels About Five Years Away
PDF version
Truck users can look forward to 30% better fuel economy at 10% lower production cost, says Achates Power
Security’s tight at Achates Power Inc. in San Diego, where you don’t just walk into the light-industrial building and expect a tour of the labs — something common where R&D is under way. Before getting beyond the lobby, I had to prove that I’m an American citizen by showing my USA-issued passport.

One of Achates’ clients is the U.S. Army, which has the company’s engineers working on an opposed-piston engine design for possible use in a Hummer-like light/medium-duty utility truck. The military consumes huge quantities of fuel, and much of that has been in distant war zones, like Afghanistan, where fuel has to be shipped in at great expense. It believes the OP engine may be an answer.

August 11, 2014
Automotive News
In era of giant suppliers, startups are winning auto business
You may have seen Mark Shaw by now. On morning TV. In YouTube videos. At auto events. Explaining his proposed new auto technology in a TED Talks lecture. Shaw is the guy who dumps mud, chocolate syrup, motor oil and paint onto the hood of a car to demonstrate how his "self-cleaning car paint" lets the mess roll off like it was never there. In demonstrations worthy of late-night TV spots, Shaw is trying to do the same thing countless entrepreneurs have done since the days of Henry Ford -- get a foot in the door of the rich auto industry.

June 3, 2014
SAE Automotive Engineering
Achates Aims at 2025 Light-Truck Power
It's autumn 2024, and you're at the local auto mall shopping for a new pickup truck—one that delivers the 32-mpg fuel economy required of full-size trucks for the upcoming model year. As the salesperson lifts a hood to show off the engine underneath, she proudly declares "2.25 liters" and you see what appears to be a supercharged SOHC inline four nestled neatly within the engine bay. . .The engine in question is the OP2S—opposed-piston two-stroke—an advanced compression-ignition unit that has its roots in 1930s aero, marine and military vehicle propulsion, where its inherent reliability, fuel efficiency, and smooth operating characteristics were proven. And for the past decade, Achates Power, a San Diego-based engine and combustion-technology company, has been re-inventing the OP2S, transforming it into a viable candidate to power future light trucks and other applications.

April 22, 2014
Motor Trend
2014 SAE Show Future Tech Roundup:
Everybody's Trying to Help the OE Manufacturers Meet 54.5-MPG CAFE

With the DOT/EPA 54.5-mpg CAFE mandate looming just 11 years off, it’s no surprise that a majority of the booths at the 2014 SAE show—at least of the ones that caught my eye—aimed to entice weary OE engineers with better fuel-saving mousetraps. . . Achates is proposing a two-stroke three-cylinder six-piston design, which stands on end to fit easily in the package space of a typical I-4 or V-6 engine. The Achates gang reckons the opposed piston idea is ideal for a two-stroke because the cylinder’s surface-area-to-volume area during combustion is less, reducing heat losses. . . Extensive computer modeling suggests that this engine would be 30 percent more fuel efficient than an experimental Cummins ATLAS 2.8-liter turbodiesel in a Nissan Titan pickup of nearly equal power output (200 hp/369 lb-ft). The Achates concept is headed for production, first in heavy stationary power-generation or ship applications.

January 2, 2014
Achates Finding Traction with Opposed-Piston Engine...(subscription required)
. . ."It’s almost startling how much progress we've made over the last three years," Johnson tells WardsAuto by phone, adding company activity has been building to a fever pitch since mid-2012. That includes a licensing deal signed in October with Beloit, WI-based Fairbanks Morse, which will piggyback on Achates technology to modernize its long-held lineup of opposed-piston engines that are used in power generation, marine/military and other applications. The Achates technology is expected to improve efficiency and lower emissions in the next-generation lineup of Fairbanks Morse powerplants, which currently includes 3-, 6-, 9- and 12-cyl. engines producing 1-5 megawatts of power, Johnson says. “We’re doing a lot of work with them now to apply our technology to their engine and bring it to the next level of development," Johnson says of the collaboration with Fairbanks Morse. “That really will make it a market leader."


December 6, 2013
Connect Honors Roth, Highlights Product Innovation in San Diego
Connect, the nonprofit supporting entrepreneurship and innovation throughout the San Diego region, offered a final heartfelt goodbye to the late Duane Roth today as part of its 26th annual awards luncheon for the most innovative products introduced over the past year. . .The winners are. . .Sustainability: Achates Power, for Achates’ opposed-piston, two-stroke internal combustion engine. Achates’ design increases fuel efficiency and reduces greenhouse gas emissions. CEO David Johnson said the engines meet U.S. military requirements for power density, fuel efficiency, heat rejection, and multi-fuel capabilities.

November 18, 2013
Transport Topics
Pushing the Envelope on Innovation...(subscription required)
. . .One example of different engine configurations is the Achates engine, an opposed-piston design inspired by the Junkers Jumo 205 diesel aircraft engine, which reportedly has shown thermal efficiency of over 47 percent, while meeting emissions standards. Contemporary truck diesels have thermal efficiency of about 42%, which the U.S. Energy Department hopes to boost to 50%, as reported in these pages in September. Achates Power Inc. last month agreed on a joint development deal with Fairbanks Morse Engine, a manufacturer of opposed-piston engines, hoping to come up with a more fuel-efficient diesel for a variety of applications, including heavy-duty uses.

November 14, 2013
HHP Insight
Achates Technology for Fairbanks Morse
San Diego-based Achates Power will apply a decade’s worth of work on two-stroke opposed-piston engines with manufacturer Fairbanks Morse, making the fundamentally efficient design compatible with today’s emissions standards – with natural gas-dominant dual fuel variants available as well. Achates, named for a faithful companion in the classic Aeneid, is talking up a joint development and licensing agreement with Fairbanks Morse. Fairbanks Morse applications include nuclear standby power, emergency stationary power, and telecommunications networks, as well as marine propulsion and ship service systems for the U.S. Navy and U.S. Coast Guard, Achates says.

November 11, 2013
San Diego Business Journal
Achates' Innovations Drive Fairbanks Deal
A young, venture-funded engine technology company has found a partner in one of the country’s most established engine manufacturers. Sorrento Valley-based Achates Power Inc. recently signed a joint development and licensing agreement with Fairbanks Morse Engine, which has been building high-horsepower, opposed-piston diesel engines since the 1930s. Achates Power has been experimenting with the opposed-piston diesels since 2004 and has garnered almost $90 million in venture funding, including $35.2 million in its series C round in October, to develop and commercialize its engine.

November 7, 2013
UT San Diego
The Diesel Engine Reborn, in San Diego
Efforts to engineer a cleaner, more efficient diesel engine are the focus of a new licensing agreement between San Diego-based Achates Power and a Wisconsin-based engine manufacturer. Achates Power, with 52 employees working out of the Sorrento Valley neighborhood, has signed a joint development and licensing agreement with Fairbanks Morse, whose business includes back-up power at nuclear plants and shipboard engines for Navy, Coast Guard and commercial vessels.

November 1, 2013
San Diego Business Journal
Achates Power Signs Joint Development Agreement with Fairbanks Morse Engine
Fairbanks Morse Engine, a Wisconsin business that has built opposed-piston engines for nearly 100 years, has signed a joint development and licensing agreement with San Diego-based Achates Power Inc., which has a new design for the opposed-piston engine. Terms of the agreement were not disclosed.

October 31, 2013
Achates Power Signs Joint Development Agreement with Fairbanks Morse
San Diego’s Achates Power, which has been advancing a cleaner, more fuel-efficient, and easier-to-manufacture design for opposed piston engines, says it has signed a joint development and licensing agreement with Fairbanks Morse Engine, the leading U.S. maker of opposed-piston engines. Fairbanks Morse, based in bucolic Beloit, WI, and operated by EnPro Industries (NYSE: NPO) makes opposed-piston engines for a wide range of applications, including emergency backup power generators and marine propulsion engines.

October 31, 2013
Green Car Congress
Fairbanks Morse Engine and Achates Power Team Up on Opposed-Piston Engines
The leading manufacturer of opposed-piston engines, Fairbanks Morse Engine (FME), an EnPro Industries company, has signed a joint development and licensing agreement with Achates Power, Inc., the developer of a family of two-stroke compression-ignition opposed-piston engines (earlier post), to reduce emissions and fuel consumption of Fairbanks Morse proprietary diesel and dual-fuel opposed-piston engines. The Fairbanks Morse Model 38 opposed-piston engine was designed and developed for a wide array of electrical power generation and heavy industrial applications. OP engines are propelling ships, driving locomotives, powering natural gas compressors, running chillers and pump drives, and producing electricity in a variety of marine and stationary applications.

October 16, 2013
Nightly Business Report (CNBC)
Fueling the Future
With the federal government shutdown, some of the nation's premier institutions for energy innovation are scaled down or shut down completely. But, many companies continue to forge ahead with ground-breaking technologies that will help reduce this country's dependence on oil and increase our energy security. . .The fastest and most cost-effective way that we can achieve our energy goals and reduce our dependence on foreign sources of oil is to introduce more efficient engines.

October 16, 2013
The Energy Collective
Re-Engineering Internal Combustion Engine Could Deliver Big MPG Boost at Lower Cost with Fewer Emissions
. . .One of the handful of companies trying to re-engineer the internal combustion engine – San Diego-based Achates Power – has been sharply focused on new engine architectures since 2004. Its “opposed piston, two-stroke” design initially for government and commercial vehicles is drawing significant interest from investors. And it’s now working with a customer it’s permitted to identify: the U.S. Army’s Tank Automotive Research, Development and Engineering Center.

October 11, 2013
Venture Beat
Achates Power Secures $35M to Fuel Efficient Engine Development
. . .While hybrid and electric transport get the lion’s share of automotive hype nowadays (at least on technology blogs like this one), most of the world still relies on old-fashioned internal combustion engines to scoot around town. To keep innovating in that sector, engine developer Achates Power raised $35.2 million from investors including Sequoia Capital Partners and four other venture capital firms, the company announced Wednesday.

October 11, 2013
UT San Diego
Achates Power Nets $35.2 Million in Capital
Achates Power, a San Diego company that’s developing a cheaper, cleaner internal combustion engine, said this week that it has raised $35.2 million in a third round of venture capital financing. Achates joins health technology startup Independa and Qualcomm Ventures as local companies involved in funding deals this week.

October 10, 2013
Venture Capital Deals
Achates Power, Inc., a San Diego-based developer of fuel-efficient combustion engine technology, has raised $35.2 million in Series C funding. Return backers include Sequoia Capital, RockPort Capital Partners, Madrone Capital Partners, InterWest Partners and Triangle Peak Partners.

October 10, 2013
The Wall Street Journal
The Daily Startup
Also in today’s VentureWire, Achates Power Inc., a maker of internal combustion engines that are said to be easier to engineer, more reliable and cleaner-burning than engines in wide use today, will kick its operations into high gear with a $35.2 million Series C round…

October 10, 2013
San Diego Business Journal
Achates Power Receives $35.2M in Series C Financing
Achates Power Inc., a maker of fuel efficient internal combustion engines for commercial vehicles and other uses, has received $35.2 million in Series C financing. The participants in this round consist of existing investors – Sequoia Capital Partners, RockPort Capital Partners, Madrone Capital Partners, InterWest Partners and Triangle Peak Partners. This funding round follows a $19 million Series B round in 2009, bringing total venture funding to $90 million since the company was founded in 2004.

October 9, 2013
Dow Jones & Company
Engine Company Achates Power Accelerates with $35.2M Series C...(subscription required)
Achates Power Inc., a maker of internal combustion engines that are said to be easier to engineer, more reliable and cleaner-burning than engines in wide use today, will kick its operations into high gear with a $35.2 million Series C round. San Diego-based Achates has now raised nearly $90 million from investors, Chief Executive David Johnson said. Valuation was not disclosed.

October 9, 2013
Achates Power Refuels with $35M for Cleaner, Fuel-Efficient Engine
San Diego’s Achates Power says today it has raised $35.2 million in a Series C round of venture financing to advance its opposed-piston engine, saying its cleaner and more fuel-efficient design is gaining traction throughout the automotive industry. Although details about the company’s work with automakers remains under wraps, Achates CEO David Johnson says the company’s engine could enable the industry to meet strict new U.S. standards that require an automaker’s fleet of passenger vehicles to average 54.5 mpg by 2025. While there are many ways for automakers to meet the fleet standard, including electric and hybrid electric vehicles, Johnson said Achates’ technology "will enable us as an industry to meet those goals more economically than anything else."

October 9, 2013
Achates Power Raises $35.2 Million in Series C Financing
Achates Power, Inc.—developer of internal combustion engines that increase fuel efficiency, reduce greenhouse gas emissions and are lower cost—announced growing market traction for its opposed-piston engine technology with the addition of $35.2 million in Series C financing. They also announced the appointment of automotive and commercial vehicle executives to its Industry Advisory Board, and its selection as a semi-finalist in the Securing America's Future Energy "Energy Security Prize".

October 9, 2013
Green Car Congress
Opposed-Piston Engine Company Achates Power Raises $35.2M in Series C Financing; New Industry Advisory Board
Achates Power, Inc., the developer of a family of two-stroke compression-ignition opposed-piston engines (earlier post), has finalized $35.2 million in Series C financing. The company also announced the formation of a new Industry Advisory Board, and its selection as a semi-finalist in the Securing America’s Future Energy (SAFE) Energy Security Prize.

October 9, 2013
Walton-Family Backed Achates Raises $35.2 Million
Achates Power Inc., a developer of efficient internal-combustion engines, raised $35.2 million from investors including Sequoia Capital Partners and the venture capital arm of Wal-Mart Stores Inc. (WMT)'s founding family. Achates, based in San Diego, will use the money to further engine development and continue to expand in regions and industries that need fuel-efficient power, Chief Executive Officer David Johnson said in an interview. Achates uses opposed pistons and cylinders in a design that the company said boosts fuel efficiency by 55 percent for gasoline powertrains.

October 2, 2013
Truck Makers Talk About Green Truck Initiatives
The affordability, abundance and relatively fast return on investment for natural gas trucks has pushed interest in electric hybrids for medium- and heavy-duty trucks and other alt-fuel alternatives to the back burner, but that doesn't mean truck makers have given up on hybrid drives and researching a variety of other technologies for future "green" trucks. . . Two-stroke diesels could see a comeback, Kahn said, noting that Achates Power's reimagined vision of this technology is a semifinalist for the Emerging Innovation Award from Securing America’s Future Energy. The ability to control the combustion process with computers, he said, could address the traditional emissions shortcomings of two-stroke technology.

October 2013
Commercial Vehicle Magazine India
Achates Power Eyes India
“We hope to see our opposed piston engine being commercially produced by the end of this decade,” declares David Johnson, CEO Achates Power. The US-company has since its formation in 2004 been trying to bring about some kind of rennaissance for opposed piston two-stroke diesel engines. These downsized engines promise to be cheaper to manufacture and deliver up to 20 percent better fuel economy vis-a-vis conventional four-stroke diesel engines and a whopping 50-60 percent better mileage with respect to a four-stroke petrol engine. Achates Power has received a major shot in the arm in the shape of a USD $4.9 million contract from the U.S. Army (see “Specifications”).

August 2013
Desktop Engineering
The Science of Combustion
Fabien Redon, VP of technology development at Achates Power (pronounced A-kay-tees), is currently prevented from revealing the recognizable commercial vehicle makers working with his company by confidentiality agreements. But if I want to get a sense of the energy and efficiency of his company's flagship products, opposed-piston engines (OPE), Redon suggests that all I have to do is observe the stream of delivery trucks pulling in and out of large grocery chains. Dubbed "An Engine That Uses One-Third Less Fuel" in MIT Technology Review (Jan. 14, 2013,, Achates’ engine bypasses the need for cylinder heads, "which are a major contributor to heat losses in conventional engines," according to the company. The OPE contains two pistons per cylinder, working in opposite reciprocating action. In a paper authored by Achates’ staff, the company states that its opposed-piston, two-stroke diesel engine design "provides a step-function improvement in brake thermal efficiency compared to conventional engines while meeting the most stringent, mandated emissions requirements."

June 2013
Diesel Progress
Military Mulls a Two-Stroke Solution...(subscription required)
Think about two-stroke engines and snowblowers, lawnmowers and weed-whackers might come to mind. How about tanks? David Johnson, CEO of Achates Power, believes it's possible the U.S. military's next generation of combat vehicles will be powered by two-stroke engines—an engine design that in recent years at least, has been most often associated with smaller consumer equipment. The U.S. military is betting $4.9 million Johnson might be right. That's how much Achates Power and AVL Powertrain Engineering are receiving to deliver a prototype engine based on Achates Power's opposed-piston, two-stroke design. The competitive bid was awarded through the U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC). The prototype is due within 36 months.

April 22, 2013
Automotive Design and Production
Opposed Pistons and Other Pressing Automotive Issues
Do you remember the Junkers Jumo 205 engine? Unless you're an aircraft aficionado or familiar with San Diego-based Achates Power, probably not, because the heyday of the Junkers Jumo 205, a two-stroke diesel engine used for aircraft, was in the 1930s. According to David Johnson, president and CEO of Achates Power, back in 2004 some people started thinking about the potential of opposed-piston, two-stroke diesel engines, and figured that they could take the highly efficient basic design used way back when in Germany and provide contemporary technology to it and consequently achieve an engine that would better the fuel efficiency of even a state-of-the-art automotive diesel by 20%.

April 19, 2013
54.5 MPG Surprisingly Close But Demands Electrification, Experts Say
Auto makers are surprisingly close to reaching federally mandated fleet fuel economy of 54.5 mpg (4.3 L/100 km) by 2025, but the industry will not achieve the minimum without the important spark of electrification, top powertrain engineers say. David Johnson, CEO of Achates Power, which markets a fuel-saving opposed-piston-architecture diesel engine for commercial applications, says loopholes in the corporate average fuel economy regulations water down the seemingly insurmountable minimum.

April 18, 2013
Autoline After Hours
Wow! Achates Opposed-Piston Engine Design
There is no shortage of innovative thinking when it comes to internal combustion technology. And, as this week's guest will demonstrate, Achates Power is no exception. David Johnson is the President and CEO of the company, which is developing an innovative opposed-piston engine that will be more fuel efficient and less expensive to produce than conventional power plants.

April 18, 2013
AutoTech Daily
Achates Details Light-Duty Opposed-Piston Diesel Concept...(subscription required)
Achates Power, Inc. has reported details about a new light-duty two-stroke diesel it is developing as part of its portfolio of opposed-piston engines, Green Car Congress reports. The San Diego-based company described its latest design earlier this week at an SAE International engine symposium in Detroit. Dubbed the OP4, the 1.5-liter two-cylinder/four-piston concept makes 129 hp and 240 lb-ft of torque. It was designed to meet Euro 6 and LEV 3 emission standards and deliver the broader speed range and low-noise operation deemed necessary for automotive applications.

April 17, 2013
Green Car Congress
Achates Power Developing Light-Duty Two-Stroke Opposed-Piston Diesel Engine: the OP4
Achates Power, which is developing a family of two-stroke, compression-ignition (CI) opposed-piston (OP) engines, has designed and is developing a light-duty diesel concept engine, the OP4. The OP4 is a two-stroke, inline two-cylinder, four-piston diesel with a swept volume of 1.5 liters. With nominal power of 96 kW (129 hp) & 4000 rpm and maximum torque of 325 N•m (240 lb-ft) @ 1750-2250 rpm (achieved at 14 bar BMEP), the engine will meet Euro 6 and LEV 3 emissions requirements and shows modeled best point fuel consumption of 189 g/kWh.

March 11, 2013
San Diego Business Journal
Achates Takes Page From Past to Create Futuristic Engine...(subscription required)
Achates Power, Inc. is working to adapt its innovative diesel engine technology for use in U.S. Army vehicles. The San Diego company and partner AVL Powertrain Engineering Inc. are now fine-tuning designs under a recently received, $4.9 million contract. The deal, which concludes in 2015, also calls on the pair to build the engine. What the customer wants, in two words, is "power density." The Army is looking for an improvement over current systems, said Peter Schihl, a senior technical expert with the Army's ground vehicle command.

February 4, 2013
AutoTech Daily
Achates Power, AVL Plan Multi-Cylinder Opposed-Piston Demo Engine...(subscription required)
Achates Power, Inc. and AVL Powertrain Engineering expect to complete work by early-2015 on a highly efficient three-cylinder, two-stroke opposed-piston engine designed for military use, Green Car Congress reports. The companies have logged more than 3,600 hours of lab tests on their single-cylinder prototype architecture. Scaling up the design will be accomplished under a $4.9 million contract with the U.S. Army Tank Automotive Research, Development and Engineering Center in Warren, Mich.

February 4, 2013
Green Car Congress
Achates Power Opposed-Piston Diesel for TARDEC will Demonstrate Multi-Cylinder Configuration
In December 2012, the US Army Tank Automotive Research, Development and Engineering Center (TARDEC) awarded Achates Power, Inc., developer of a two-stroke, compression-ignition (CI) opposed-piston (OP) engine, and AVL Powertrain Engineering, Inc. a $4.9-million contract for design and construction of the Next-Generation Combat Engine.

February 2013
Auto Tech India
Liquid Hydrocarbon Still the Best Way of Storing Energy
With efficiency being the bandwagon every automaker wants to hop onto, many new ideas are being pondered upon. These ideas aim at enhancing efficiency whilst maintaining cost-effectiveness. One such idea comes from Achates Power, Inc., which has developed an improved version of the opposed-piston, two-stroke engine. Auto Tech Review spoke to Laurence J. Fromm, Vice President, Business & Strategy Development, Achates Power, Inc. to understand how different and viable their solution is.

January 17, 2013
Achates Claims Huge Gains in Fuel Efficiency of Opposed-Piston Design
Achates Power was founded in 2004 with the idea of re-engineering the opposed-piston, two-stroke engine, a design that has been used in ships and submarines, aircraft, trucks, and other vehicles for more than 100 years. Such engines fell out of favor with the adoption of stricter tailpipe emission standards during the 1970s. But Achates founder James Lemke, an adjunct engineering professor at UC San Diego, saw advantages in the design.

January 17, 2013
Times of India
U.S.-based Engine Technology Company Achates Power Taps Indian Truck and Bus Makers for New Age Engine
U.S.-based engine technology company Achates Power is in discussions with top commercial vehicle manufacturers in India for a new age "lean, low cost" diesel engine that it has patented worldwide. "We are in touch with engine manufacturers around the world including India and the top commercial vehicle players in India have evinced interest," said Larry Fromm, vice president, Achates Power.

January 14, 2013
MIT Technology Review
An Engine That Uses One-Third Less Fuel
The Jumo engine, made by the German aircraft company Junkers in the 1930s, was an oil-burning, smoke-spewing machine. But it was the most efficient engine of its day. Achates Power, based in San Diego, California, is modifying the design to make it meet modern emissions standards, while improving its efficiency. Data from Achates' small, single-cylinder test engine convinced the U.S. Army to give Achates, and partner AVL Powertrain Engineering, $4.9 million to build a complete multi-cylinder prototype engine that the Army hopes can be the basis for a range of applications, including powering tanks.


December 31, 2012
Detroit Auto Scene
Achates Power, AVL Awarded $4.9 Million TARDEC Contract
The U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC) has awarded a $4.9 million contract for design and construction of the next-generation combat engine to San Diego-based Achates Power and AVL Powertrain. The new engine is expected to deliver superior fuel economy, high power density, low heat rejection and will be able to use multiple fuel sources.

December 19, 2012
SAE Automotive Engineering
U.S. Army Tabs AVL and Achates Power for New-Generation Engine
The U.S. Army's Tank Automotive Research, Development and Engineering Center (TARDEC) has awarded a $4.9 million contract to AVL Engineering and Achates Power Inc. to design and build a demonstrator engine as part of the military's Next-Generation Engine program intended for a wide range of combat and tactical vehicles. In its contract proposal, AVL said the engine would be based on Achates' opposed-piston two-stroke technology. It will be multi-fuel-capable, per TARDEC's requirements. In developing its base engine technology, Achates has accumulated more than 3600 h of dynamometer testing, achieving 47.5% brake thermal efficiency, the company claims.

December 19, 2012
Green Car Congress
U.S. Army Awards $4.9M Contract to Achates Power and AVL for Next-Generation Combat Engine Based on Achates Two-Stroke, Opposed-Piston Technology
The US Army Tank Automotive Research, Development and Engineering Center (TARDEC) has awarded Achates Power, Inc., developer of a two-stroke, compression-ignition (CI) opposed-piston (OP) engine (earlier post) and AVL Powertrain Engineering, Inc. a $4.9-million contract for design and construction of the Next-Generation Combat Engine. As outlined in the solicitation (TARBAATOPIC27), to serve a wide range of US combat and tactical vehicles, the engine must deliver superior fuel efficiency, high power density and low heat rejection and will be multi-fuel capable. It should also be of a scalable design to maximize value to the Government and military vehicles. To meet the program requirements, AVL proposed an engine based on the Achates Power opposed-piston, two-stroke technology, which includes more than 1,000 innovations covered by patents and patent applications.

December 19, 2012
San Diego Daily Transcript
Achates Power Lands Army Contract
San Diego's Achates Power Inc., a developer of fuel-efficient and clean-burning internal combustion engines, has been selected to help design and construct the U.S. Army's next-generation combat engine for the Army's Tank Automotive Research, Development and Engineering Center.

October 19, 2012
The Virtual Driver
An Engine in Opposition to Convention
David Johnson has an enviable résumé. He launched an all-new diesel in Ford's Super Duty pickup before heading to GM where he worked on clean diesel programs for Opel, Saab and Renault passenger vehicles. Navistar was next. There he was program manager for the MaxxPro line of Mine-Resistant Ambush-Protected (MRAP) vehicles used in Iraq and Afghanistan, before becoming vice president of product operations for military and export markets. In 2008, he went to Achates (a-kay-tees) Power as president and CEO, and was given the task of using that experience to accelerate the development of an opposed-piston two-stroke diesel engine. These engines were prevalent in the early part of the 20th century, but fell afoul of shortcomings like high hydrocarbon emissions and heavy oil consumption as that century progressed. However, until their deficits outweighed their plusses, opposed-piston two-strokes were more efficient than conventional piston motors.

September 13, 2012
Mother Nature Network
Amazing Engines Promise 60 to 100 mpg
The two-stroke motor isn't new—in fact, there's probably one in your weed whacker. But Achates Power and other companies say they can turn around its image as a big polluter. It would be a mistake to count out the internal-combustion engine as yesterday's technology, soon to expire in a puff of exhaust gas. Electrification is coming, but meanwhile engineers have offered more innovation for the venerable gas engine in the last three years than they did in the previous 20. The result is 40 mpg on the highway, from four-cylinder power plants with the same performance as older V-6s or even V-8s.

August 7, 2012
Automotive Engineering International
Advances in Simulation Deliver Better Engines
Engine developers need to deliver cleaner engines that burn less fuel, are more durable, and quieter. If that was not enough, competitive pressures are forcing them into shorter time lines and reduced budgets. Engine developers may have no other opportunity to reduce cost and risk than use more CAE simulations. . . A testament to the power of today's CAE tools coupled with advanced testing equipment is from Achates Power, a start-up engine company promoting two-stroke opposed-piston diesel engines. "We demonstrated 21% better fuel economy over the Ford 6.7-L V8 Powerstroke Diesel with similar performance and engine-out NOx emissions," David Johnson, CEO of the company said to AEI.

May 9, 2012
Automotive World
Interview: David Johnson, President and Chief Executive, Achates Power (subscription required)
Achates Power was established in 2004 by Dr James Lemke, and is headquartered in San Diego, California. In November 2011, Achates Power published data which it says shows its two-stroke, opposed piston engine is 20% more fuel efficient than a recently-introduced award-winning four-stroke diesel engine.

April 24, 2012
SAE Vehicle Engineering
Super-efficient, Unconventional ICEs Take Aim at Otto and Diesel
Today's combustion engines typically are only 20-30% efficient at part-load operating conditions, resulting in poor average fuel economy—and inspiring powertrain designers to reach further. . . The symposium's first-day session covered alternative engine designs, which are a theme with rich history at SAE Congresses. So it was appropriate to hear from the CEO of Achates Power, which has emerged as one of three prominent developers of opposed-piston engines.

March 5, 2012
Automotive News
Cheap, High-MPG Engines—But. . . (subscription required)
The typical tradeoff for a greener powertrain is higher cost. Electric vehicles, plug-in hybrids, Prius-type hybrids—all come at a price premium. But imagine an engine that promised a 30 percent increase in fuel economy and cost less. Automakers would race to get that kind of paradigm-buster into their cars, right?. . .Three companies developing opposed-piston engines say they can produce the magic combination of sharply increased efficiency and lower costs.

March 2012
Diesel Power
Eight Companies Determined to Change Diesel Engines Forever
Right now, internal-combustion engines (ICE) are hot—hotter than battery-powered vehicles, hotter than hybrids, hotter than anything else on the market for that matter. Though gasoline-fueled engines represent the bulk of the internal-combustion engines on the road, new high-tech diesels are coming on strong. . .The two-stroke, diesel-fueled, compression-ignition design of Achates Power uses ports in the cylinder wall instead of a valvetrain to control intake and exhaust flow.

February 8, 2012
Automotive World
Opposed-piston Engines Support Sustainable Transport
One of the most viable solutions to economically and environmentally-sustainable transportation has been around for more than a century. The opposed-piston, two-stroke engine was first manufactured successfully in 1890 and has since been used in a variety of ground, marine and aviation applications.

February 7, 2012
Diesel Incentives on Table as 2025 CAFE Talks Enter Final Weeks
Federal regulators may tweak future U.S. fuel-economy rules to put more muscle behind the proliferation of diesel engines after sellers and makers of the technology lobby the Obama Admin. Margo Oge, director-Office of Transportation & Air Quality at the Environmental Protection Agency, says talks continue with the diesel contingent, including auto makers Volkswagen and Daimler, after the proposed 54.5 mpg (4.3 L/100 km) by 2025 rules shut out the technology in favor of hybrid-electric, plug-in electric and battery-electric vehicles.

February 2012
Diesel Power
Radical New Diesel Ideas
. . .Although opposed-piston engines (OPE) are radical to the consumer world today, they are not new since the first versions were in operation more than a century ago. OPEs use two pistons in one cylinder and require no head gaskets. The two-stroke compression-ignition design of Achates Power uses ports in the cylinder wall instead of a valvetrain to control intake and exhaust flow. This company presented the oil consumption, emission, and performance results from its 53 percent thermal-efficient engine at the DEER conference. It looks like its three-cylinder design will outpower the 6- and 8-cylinder engines we use and love today.

January 24, 2012
Viewpoint: To Tackle the World's Energy Problems, We Need to Make All Engine Technologies More Efficient
There is no one solution to address the issues facing the transportation industry. Electric vehicles are a viable solution for some consumers and industries, but they will not be a panacea. Significant improvements across a range of transportation technologies are necessary in light of dwindling petroleum reserves and global warming concerns. The industry debate is currently centered on whether hybrid and electric vehicles are the wave of the future. But only focusing the discussion on one or few solutions is missing the opportunity, the bigger picture—and the point.

January 23, 2012
Heavy Duty Trucking
Engines Tomorrow: What Types of Engines Will You Be Selling Parts for in the Future?
The next step in engine emissions is targeting greenhouse gas emissions in heavy trucks. . .In the past few years, two new companies have been designing modern truck- and auto-sized engines using the OP layout. Achates Power in San Diego says its OP engine, now in dyno testing, has achieved fuel efficiency that's 21% better than a benchmark V-8, the latest 6.7-liter PowerStroke from Ford (not its Navistar-built predecessor), and meets 2010 emissions limits.

January 9, 2012
Heavy Duty Trucking
How Much Will the Engine of the Future Resemble Today's Powerplants?
The engine of the future is probably similar to the one in your current truck. It's an internal combustion engine with pistons, valves, crankshaft and other familiar parts, an inline 4 or 6, or a V-6 or V-8. . .In the last few years, two new companies have been designing modern truck- and auto-sized engines using the OP layout, and with great promise. Achates Power in San Diego says its OP engine, now in dyno testing, has achieved fuel efficiency that's 21% better than a benchmark V-8, the latest 6.7-liter PowerStroke from Ford (not its Navistar-built predecessor), and meets 2010 emissions limits.

January 4, 2012
10Q: Achates Power Reinvents the Engine
Imagine the commercial delivery truck of the future—powered by a silent electric engine and emitting fresher air than it takes in. Now keep imagining, because for the next few decades, the reality is that roads will more likely be dominated by the same internal-combustion vehicles our grandparents drove. In the meantime, Achates Power has revisited a century-old concept of how to remake the internal combustion automobile engine so it's cheaper, has fewer emissions and uses less fuel.


December 19, 2011
San Diego Business Journal
Stroke of Genius?
Achates Power Inc. has developed a new kind of diesel engine that's lighter weight and more fuel efficient than conventional diesel engines used in cars and trucks today—and because it has fewer parts, the engine is as much as 15 percent cheaper to produce, said the company's co-founder and chief scientist, James Lemke.

December 6, 2011
Sea Change Radio
Busting Convention with the Combustion Engine
Do you ever try to envision a world where all the cars are electric – quiet, clean and carbon-neutral? Sounds great, but the truth is that the shift to a fossil-free fleet of vehicles on this planet is likely to be a slow cumbersome process that unfolds over several decades. In the meantime, however, there are some bright, inventive minds trying to ease the pain associated with the dirty, carbon-intensive status quo.

December 2011
Automotive Products Finder
An Engine Renaissance
Read PDF Version

Achates Power, a U.S.-based company engaged in the development of auto engines, is now ready with a new opposed-piston, two-stroke engine which, the company's president in this interview with Huned Contractor, claims will significantly reduce the costs through better fuel economy.

November 5, 2011
Green Big Truck
Achates Power Shows 20% Improvement
Achates Power has been developing an OPOC-type engine using an opposed-piston, compressed-ignition two-stroke system. The company has tested their improved design 3-cylinder engine configuration and received a 20% improvement in cycle-averaged brake-specific fuel consumption (BSFC) when compared to current advanced medium-duty four-stroke diesel engines.

November 2, 2011
Automotive World
U.S.: Achates Power Reports New Efficiency Test Results
Achates Power, the developer of an opposed-piston engine design, has produced efficiency test results that it says demonstrate a 20% improvement in fuel efficiency compared to a recently introduced...

November 2, 2011
Green Car Congress
Latest Test Results for Achates Power Two-Stroke Opposed-Piston Engine Show 20% Improvement Over Four-Stroke Diesel; BTE of 45.1% at Best Operating Point
Achates Power, the developer of a two-stroke, compression-ignition (CI) opposed-piston (OP) engine announced that the latest test results for a 3-cylinder Achates engine configuration indicate a 20% improvement in cycle-averaged brake-specific fuel consumption (BSFC) when compared to a recently introduced advanced medium-duty four-stroke diesel engine: 192.6 g/kWh BSFC for the Achates engine, versus 239.9 g/kWh for the reference engine.

November 1, 2011
Torque News
Achates Power Opposed-Piston Engine More Fuel Efficient than Four-Stroke Diesels
According to the news release dated Nov. 1, 2011, Achates Power, a developer of radically improved internal combustion engines that increase fuel efficiency and reduce greenhouse gas emissions at lower cost, today announced its highest engine efficiency test results.

November 1, 2011
Achates Power Cites "Huge" Improvement in Diesel Fuel Savings, Emissions
San Diego's Achates Power, a startup developing a radical new design for a diesel-powered truck engine, is blowing its own air horn today about its progress in demonstrating significant improvements in the efficiency and performance of its engine. Through a series of tests that began just over a year ago, Achates says its prototype has shown improved fuel efficiency, while also meeting the new EPA 10 emission standards for heavy trucks, which seek a seven to 20 percent reduction in greenhouse gas emissions by 2018.

November 1-15, 2011
Auto Monitor
Achates to Make Inroads in CV Segment
Read PDF Version

Achates Power, the U.S.-based engine manufacturer, which has refined the opposed-piston engine technology, is looking to penetrate the commercial vehicle segment as the segment provides a much better showcase for the effectiveness of the company's value proposition as compared to the passenger vehicle segment.

October 2011
Auto Business Review
Chinese Counter Traditional Wisdom
Read PDF Version

October 31, 2011
DieselNet Newsletter
Conference Report: ASME 2011 ICE Fall Technical Conference
This year's ASME Internal Combustion Engine Division Fall Technical Conference was held on October 2-5, 2011 at the Waterfront Place Hotel in Morgantown, West Virginia. . .Achates Power and Da Vinci Emissions Services reported on oil consumption measurements on Achates Power's opposed-piston two-stroke diesel engine. A weighted average fuel-specific lubricant oil consumption of 0.18% was achieved (ICEF2011-60140).

October 13, 2011
Green Big Truck
Achates Opposed-Piston Engine 53% Efficient, Study Says
Achates Power, which is developing a two-stroke, compression-ignition, opposed-piston engine (find out more about OP engines here) has presented performance and emissions results of their engine when used in a medium-duty application.

October 12, 2011
The Daily Energy Report
Global Cleantech Cluster Assoc. Announces 2011 Later Stage Award Finalists
The Global Cleantech Cluster Association has announced its Global Top 30 for the 2011 Later Stage Award. The finalists will be judged by 28 cleantech venture capitalists, investors and serial entrepreneurs who collectively manage $3.5 billion in clean technology investment.

October 7, 2011
Automotive World
U.S.: Achates Power Wins GoingGreen Automotive Award
The Silicon Valley AlwaysOn website's 2011 GoingGreen Global 200 Top Private Companies include Achates Power as the winner among its Global Green Automobiles and Transportation category contenders...

October 6, 2011
Green Car Congress
Study Finds Achates Two-Stroke Opposed-Piston Engine Shows Indicated Thermal Efficiency of 53%
Achates Power, the developer a two-stroke, compression-ignition (CI) opposed-piston (OP) engine (earlier post), is presenting performance and emissions results of the Achates engine used in a medium-duty application, as well as the results of a detailed thermodynamic analysis comparing the closed-cycle thermal efficiencies of three engine configurations: a baseline 6-cylinder, 4-stroke engine; a hypothetical 3-cylinder opposed-piston 4-stroke engine; and a three-cylinder opposed-piston two-stroke engine (the Achates engine).

October 6, 2011
Greentech Media
Diesel Engine Renaissance
...Some startups are also getting into diesel by looking at ways to make the engines even more efficient. Achates Power says its two-stroke opposed piston diesel engine can increase fuel efficiency by another 10 percent to 15 percent.

October 5, 2011
Green Car Congress
EPA Official: The Future of the Internal Combustion Engine is Bright and Clear
"The future of the IC engine is bright and clear; I don't think that could be any more obvious to all of us," said Byron Bunker, Director, Heavy Duty Engine Center, Office of Transportation and Air Quality, U.S. Environmental Protection Agency during his remarks in a panel discussion on the role for internal combustion engines in the energy future at the U.S. Department of Energy's 2011 Directions in Engine-Efficiency and Emissions Research Conference (DEER) in Detroit.

September 2011
Achates Power: Diesel Engine Tech Grows Small and Smart
Read PDF Version

Two-stroke diesel engines have been worked on for a while, but they never quite featured on production cars, until now that is. American engine developer Achates Power have been working on the technology for many years and today are very close to having a light, efficient, economical, and powerful two-stroke diesel engine suitable for cars and light commercial vehicles.

September 30, 2011
Announcing the 2011 GoingGreen Global 200 Top Private Companies
AlwaysOn is proud to announce this year's GoingGreen Global 200—the top emerging companies that are transforming big industry and creating viable business models for the green technology.

September 21, 2011
Bloomberg TV
Prospects for Overhaul of Combustion Engine
...Today we check out the engines that will power the cars of the future. . .A third start-up, San Diego-based Achates Power is working on its own version of an opposed-piston engine.

September 6, 2011
The Auto Channel
Achates Power to Present Fuel Efficiency Results of Its Two-Stroke Opposed-Piston Engine at SAE 2011 Commercial Vehicle Engineering Congress
Achates Power, developer of radically improved internal combustion engines that enhance fuel economy, reduce greenhouse gas emissions and are lower cost, will discuss engine fuel efficiency challenges and improvements at the SAE 2011 Commercial Vehicle Engineering Congress (ComVEC) Sept. 13-14 at the Donald E. Stephens Convention Center in Rosemont, Ill.

September 5, 2011
SiliconIndia News
Most Promising Start-up Opportunities
According to Business Week, the companies to look for are Achates Power (which is testing a clean-burning diesel engine), AltoRock Energy (which has bored wells as deep as four miles to tap geothermal energy), and BioFuelBox (which converts oil-laden sludge from sewage systems, industrial plants, and animal processing factories into clear, odorless diesel fuels).

September 4, 2011
Torque News
Split-Cycle Engine Technology to Challenge EVs and Hybrids
Contrary to modern belief and all the canned reports by many automotive media types that electrification is the only way to maximize automobile efficiency, the demise of the internal combustion engine is extremely exaggerated, especially as split-cycle engine technology comes of age and challenges the high costs of EVs and hybrid cars. . . In the meantime, major technical advances are coming from outsiders, like Scuderi Group, Tour Engine, even Achates Power and Cyclone Power.

August 26, 2011
Fast Company
Putting Old Tech In The Internal Combustion Engine Nets One-Third More Mileage
Other companies are pushing the limits of what internal combustion engines can do with a gallon of fuel, too. . .Achates Power, a San Diego engine start-up, have deployed similar opposed piston technology to create more efficient internal engines (diesel, in their case) to compete with hybrids and electrics on the road.

August 24, 2011
Torque News
Pike Research Forecasts $1.5 Million EV Charging Locations in U.S.A. by 2017
The latest report from Pike Research examines the growing global market for electric vehicle charging equipment and provides market analysis and forecasts for residential, workplace, public, and private charge points in the United States by 2017. . . If there is any technology that will combat electrification, I fully believe it will be the air-hybrid derivation that comes from the split cycle engine. . .Then there is Achates Power with its opposed piston, two-stroke diesel. While this is not a split cycle, it bears noting for its direct application to heavy trucks.

August 11, 2011
Automobile Industry-Vogel
Chinese Achates Power Introduces Newly Designed Opposed-Piston Diesels
Read PDF Version

August 9, 2011
Torque News
Achates Power Addresses Commercial Truck Mileage and Emissions Standards
In a timely interview one week before President Obama announces the first U.S. CO2 emission rules for heavy trucks in Springfield, VA today, Achates Power, showed why it participated in the 2011 CAR Management Business Seminars in Traverse City, Michigan.

July 30, 2011
Automobile & Parts Magazine
Chinese Heritage and Innovation – Achates Power is Dedicated to Opposed-Piston Two-Stroke Engine
Read PDF Version

July 28, 2011
Greentech Media
A 54.5 MPG Standard to Hit in 2025: Here Are Ten Ways to Improve Mileage
With higher fuel standards on the way, here are some technologies that you might see automakers adopt, or adopt more often. . .6. New Engines. Pinnacle Engines is working on an opposed-piston gas engine, while EcoMotors and Achates Power have opposed-piston diesels.

July 27, 2011
Chinese Heritage and Innovation – Achates Power is Dedicated to Opposed-Piston Two-Stroke Engine

July 22, 2011
Greentech Media
The 50 MPG Chevy?
Further out, expect to see trucks and/or cars powered by opposed piston diesel engines from the likes of Achates Power and EcoMotors. Achates Power says its two-stroke opposed piston diesel engine can increase fuel efficiency by another 10 to 15 percent.

July 18, 2011
Autocar Professional Magazine
Achates Power Kicks Off Talks with OEMs
US-based Achates Power Inc is in talks with Indian OE manufacturers for an improved internal combustion engine technology that it has designed in-house. The two-stroke, opposed-piston (OP), compression ignition diesel engine is claimed to possess the ability to enhance fuel economy, reduce greenhouse gas emissions and lower costs for running passenger cars and commercial vehicles.Achates Power is in the process of defining projects for working with Indian vehicle manufacturers after completion of technical due diligence by prospective clients.

July 16-31, 2011
Auto Monitor
Achates Power To Conduct Field Trials
Achates Power believes that opposed piston technology can help Indian OEMs to have vehicles that are more fuel efficient besides being cleaner in terms of emissions.

July 15, 2011
Autocar Professional Magazine
Achates Power Drives Opposed Piston Engine
American company is in talks with some Indian OE manufacturers for the use of its fuel-efficient, opposed piston engine.

July 12, 2011
Hindu Business Line
Achates Eyes Indian Auto Market with New Engine
It is barely seven years old but the US-based Achates Power already has over 800 patentable innovations in its kitty. Its mandate is simple: build better engines to meet the environmental challenges of the global transport industry.
Read PDF Version
July 11, 2011
Chinese U.S. Opposed-Piston Engine Challenges Conventional Engines
July 10, 2011
Chinese U.S. Opposed-Piston Engine Challenges Conventional Engines
July 8, 2011
China Industry News
Chinese U.S. Opposed-Piston Engine Challenges Conventional Engines
Read PDF Version

July 5, 2011
GigaOM Cleantech
Why the days of the internal combustion engine are NOT over
Here's some sobering news out of the raucous fourth of July weekend: considering battery prices and $4.50 per gallon gasoline, it'll take a little under 6 years for a hybrid car to pay off in fuel savings, and 8 years for an electric car, according to this report in the Wall Street Journal. At that rate of battery innovation, and if gas prices don't climb, then plug-in cars will remain largely financially not viable for most buyers in the U.S. for years to come. That's not good news for electric car makers, but could actually be a driver for companies building new, more efficient, internal combustion engine technology...Other companies that I've covered that are developing more efficient engines include Pinnacle Engines, which makes a four-stroke engine that it says can deliver 30 to 50 percent better fuel economy, and could be commercialized by 2013. Another is Achates Power, which is building a closed piston, 2-stroke engine that gets 10 to 15 percent better fuel economy than state of the art diesel engines that exist today.

July 5, 2011
Chinese Achates Power, Inc.: Ambitions in Opposed-Piston Engines

July 4, 2011
Machinery & Electronics Business Daily
Chinese Opposed-Piston Engines: A Threat to Clean Energy?
Read PDF Version

July 3, 2011
Shanghai Automotive News
Chinese New Engines Eye Clean Energy
Read PDF Version

July 1, 2011
Chinese Achates Power Engine Expands Business in Heavy Trucks with Improved Oil Efficiency

June 29, 2011
Greentech Media
Pinnacle Engines Aims to Slash Fuel Consumption by 25 to 50 Percent
Although electric cars tend to grab most of the headlines, established companies and a select group of startups like Achates Power and EcoMotors are tinkering with ways to improve the efficiency of internal combustion engines.

June 17, 2011
Heavy Duty Trucking
Another Company Developing Fuel-Efficient, Opposed-Piston Engine
"Pistons stay cooler and less heat is rejected than in current four-stroke diesels, which allows use of a smaller cooling system. Lab testing shows the Achates has 12 to 16 percent better brake-specific fuel efficiency. And if a modern four-stroke diesel's thermodynamic efficiency is 45 to 46 percent, then the Achates engine's "is on the order of 50 percent, and we have a road map to go to 55 percent," says Achates' president, David Johnson."

June 16, 2011
SoCal Tech
Achates Power Adds CTO
San Diego-based Achates Power, the developer of improved internal combustion engine technology, said today that it has named John Koszewnik as Chief Technical Officer.

May 11, 2011
CNN Money
8 Greentech Trends to Watch
"...Achates Power say their engine designs could drastically cut diesel consumption."

May 8, 2011
The San Diego
Can diesel be a green fuel?
Sorrento Valley company working on efficient engines

April 8, 2011
North County Times
Tech – It Helps to Have Friends
Walmart Heir Played Hand in Achates Powers' Quest to Revolutionize Engine Market

March 31, 2011
Local Company Touts New Type of Car Engine
Read Article
Watch Video

March 30, 2011
The New York Times
Start-Ups Work to Reinvent the Combustion Engine
"The Volt needs a better engine," said Mr. Johnson, adding that 1,600 hours of testing had shown Achates's engine was 15 percent more efficient than conventional diesel counterparts...

March 22, 2011
and Reuters
Ford Taps Tiny Bubbles for Lighter, More Fuel Efficient Cars
Ford is turning to a new tech to reduce the weight of its cars and improve fuel efficiency: tiny bubbles. Ford says it is trialling a technology out of the labs of MIT, now owned by Trexel, called MuCell, which injects micro bubbles into plastic components.

March 17, 2011
San Diego Daily Transcript
Greener, smarter, cheaper engines for passenger and commercial vehicles
James Lemke is an airplane enthusiast who owns quite a few aircraft. Among those are several single-engine planes, which he was anxious about flying without a backup engine. So he wondered, why not have a lightweight engine as a backup?

March 4, 2011
Achates Power to Release More Efficient Engine
Achates Power, founded in 2004, proposed the creation of a new engine that would save on two important matters, both which are intermingled: fuel and cost.

March 4, 2011
GreenTech Media
An Engine That Costs Less and Gets Better Mileage?
Achates Power… claims that its proposed two-stroke opposed piston diesel engine -- an idea put into practice by the Junkers aircraft company -- will cost 10 percent to 15 percent less than a conventional engine to manufacture and will increase fuel efficiency by 10 percent to 15 percent, according to CEO David Johnson.

February 15, 2011
Auto Monitor
Interview with David Johnson, President & CEO, Achates Power

January 12, 2011
A Nerd's-Eye View Of The North American International Auto Show


December 7, 2010
Developer Looks to Take Next Step With 2-Stroke Engine Concept

November 29, 2010
Opposed-piston Diesel Engine Closer to Reality

June 30, 2010
Xconomy Forum Calls for Bold Leadership and Collaboration in Smart Energy

March 31, 2010
CBS News
Sixteen Ancient Green Technologies Reborn
Not everything is new in greentech. A number of companies are based around technologies and concepts coined years and even centuries ago.

March 9, 2010
Clean Energy Sector
7 Startups Building Green Car Tech for a Pre-Electric World
Achates Power... Testing a 4.2 liter, 4-cylinder engine "that rivals conventional engines nearly twice its size." Plans to license tech to big manufacturers and automakers

January 9, 2010
Green Car Congress
Opposed-piston Engine Company Achates Power Closes $19.2M Series B Round
Achates Power, a company developing a new family of opposed-piston engines, has completed a $19.2M Series B round with the addition of a new investor, Triangle Peak Partners. Triangle Peak joins the company's existing investors: Sequoia Capital Partners, Rockport Capital Partners, Madrone Capital Partners, and InterWest Partners.


July 14, 2009
Business Week
25 Companies to Watch in Energy Tech
These clean-energy startups are hitting the market with products and services that could radically alter how we think of, and consume, power

June 8, 2009
Cleantech Group
Achates Power Rides Diesel Wave with Clean Engines
The same fuel efficiency that drew Europeans to embrace diesel engines is taking hold of the U.S., and startup Achates Power is ready to pounce.

May 13, 2009
Business Week
Can Diesel Save Detroit?
Plug-in vehicles held the spotlight in the turnaround plans drafted by General Motors and Chrysler in recent months, and Congress has allocated billions of dollars for investment in plug-in car and battery research, production, and infrastructure. But there's another technology in the mix that could end up doing more to help automakers meet tightening fuel-economy standards over the near term, while also creating new opportunities for entrepreneurs: diesel.

February 25, 2009
Cleantech Group
Hottest Startups Woo Cleantech Investors with Wide-Ranging Tech
From clean diesel engines to personal solar panels, investors had a wide range of new technologies to peruse.


January 24, 2008
cnet News
Another Diesel Engine Start-Up Comes Out of Stealth