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37Mazda hard at work on Skyactiv 2 engine technology

As Mazda continues the current rollout of its still-new Skyactiv technology, the automaker is already looking at improving its family of engines for even better fuel economy and emissions reductions. Automotive News reports that with stricter fuel economy and emissions regulations planned for 2020 and 2025 in Europe, Mazda will likely release engines with next-generation Skyactiv 2 technology by the end of this decade, and Skyactiv 3 units just five years later.

AddDon't put gasoline in your diesel engine, unless you work at Argonne

What do you get when you cross a diesel engine with its gasoline counterpart? If Steve Ciatti (pictured), a mechanical engineer at Argonne National Laboratory has anything to say about it, it'd be an offspring that is genetically superior to its parents. Taking the best features of diesel engines (high efficiency) and gasoline engines (lower particulate matter and nitrogen oxide emissions), a blend of the two might be the holy grail of modern, liquid-fueled engine design.

AddNext-gen Volt could use diesel, two-cylinder or rotary range extender

2011 Chevrolet Volt – Click above for high-res image gallery

44Next-gen Volt could use diesel, two-cylinder or rotary range extender

2011 Chevrolet Volt – Click above for high-res image gallery

AddDelphi to discuss next-generation direct injection at SIA Congress

At the SIA (French Automotive Engineers Society) Congress in Rouen, France this week, Delphi will be presenting information on its latest-generation direct fuel injection and control systems for diesel engines. Delphi produces both electromagnetic servo injectors and the more advanced piezo-electric injectors. For the latest editions of both systems, Delphi has bumped the maximum operating pressures from the 2,000 BAR level that has been used in the last few years up to 2,400 BAR (34,800 psi). T

AddLotus gets animated with its Omnivore engine technology

Omnivore [(om-nuh-vawr)]: An animal whose normal diet includes both plants and animals. Human beings and bears, for instance, are omnivores.

AddGreenlings: PHEV? DSG? VMT? A guide to common green vehicle acronyms

Guide to Common Green Acronymns

Deciphering the new vocabulary of the green car movement can sometimes be a real head scratcher. To alleviate as much confusion as possible, we would like to present our readers with a list of common acronyms and what they mean, with plenty of links for more information. If you have some TLAs (that's three-letter acronyms) that you'd like us to add to our glossary, just let us know in the comments.

14Lotus: Omnivore engine is 10% more efficient with more to come

Last March at the Geneva Motor Show, Lotus announced its new Omnivore research engine. The Omnivore is a two-stroke direct-injected engine designed to take advantage of the latest in electronic engine management and run on just about any liquid fuel (hence the name). In the time since the initial announcement, the boffins at Lotus Engineering have been exercising their creation on the dyno stand to evaluate its performance.

AddLotus' Omnivore engine is already 10% more efficient, with more to come

Last March at the Geneva Motor Show, Lotus announced its new Omnivore research engine. The Omnivore is a two-stroke direct injected engine designed to take advantage of the latest in electronic engine management to allow it to run on just about any liquid fuel (hence the name). In the time since the initial announcement, the boffins at Lotus Engineering have been exercising their creation on the dyno stand to evaluate the performance.

26We take a quick spin in GM's latest HCCI engine prototype

Since our first encounter with General Motors' HCCI (homogeneous charge compression ignition) engines in August 2007, the powertrain research engineers at GM's Tech Center in Warren, MI have continued plugging away at the technology, trying to turn it into a marketable reality. The basic premise of compression ignition is simple. Based on the Ideal gas law (PV=nRT), if you decrease the volume of a particular quantity of air, the temperature rises to the point where fuel will spontaneously combus

AddGM's HCCI engines now run from idle to 60 mph!

Since our first encounter with General Motors' HCCI (homogeneous charge compression ignition) engines in August 2007, the powertrain research engineers at the GM Tech Center in Warren, MI have continued plugging away at the technology, trying to turn it into a marketable reality. The basic premise of compression ignition is simple. Based on the Ideal gas law (PV=nRT), if you decrease the volume of a particular quantity of air, the temperature rises to the point where fuel will spontaneously comb

AddGM powertrain plans: high-tech, low weight

Click above for more early images of the production Chevy Volt

AddBosch CEO talks lithium ion batteries and diesels

In the wake of a new lithium ion battery joint venture, Bernd Bohr, CEO of Bosch is not concerned that automakers will try to keep battery production in house. In an interview with German magazine Auto Motor und Sport, Bohr was asked about the fact that several automakers including Toyota, Mitsubishi and Nissan are involved in their own joint ventures for lithium batteries. Bosch is investing $300-400 million in a venture with Samsung to produce automotive lithium batteries. Bohr feels it will

AddGeneral Motors opens new powertrain engineering center that will create E-Flex

On Friday GM officially kicked off use of its new Powertrain Engineering Development Center in Pontiac MI. The new $463 million facility includes 120 dynamometer test cells for exercising all manner of new drivetrains. Among those cells 20 are specifically dedicated to testing motors for electric and hybrid drive systems. Others are split among fueled and non-fueled cells for testing gas, diesel, and flex-fuel engines and transmissions respectively. A new quick connect pallet system allows techn

AddGM HCCI engine can operate at idle

General Motors first showed off its prototype Homogeneous Charge Compression Ignition (HCCI) engines last summer in an Opel Vectra and a Saturn Aura. We had the opportunity to drive these vehicles at GM's Milford Proving Ground at a very early stage of development. Because HCCI only works at part throttle conditions (while engines in cars have to work under all conditions), these new power plants have the ability to switch modes on the fly between HCCI and spark ignition. When we drove the cars,

AddMercedes wants to eliminate petroleum from its lineup by 2015

By the middle of the next decade Mercedes-Benz wants its entire lineup to be able to operate entirely free of petroleum. The German giant is working on a variety of technologies that will help provide crude oil free transport such as battery electrics, fuel cells and highly efficient internal combustion engines that can operate on biofuels. Mercedes has recently been letting European journalists sample some of these new powertrains at a test facility in Spain.

AddGM engineers speak up for installing MPG displays in every vehicle

Photo by Marcin Wichary. Licensed under Creative Commons license 2.0.

AddDoes diesel have a future?

Does diesel have a future? Autoexpress editor Dan Strong believes the answer is a clear no. He doesn't mince words in his new column: "Thanks to high fuel costs, tough-to-meet emissions targets and growing competition for scarce fossil fuel resources, the engine once championed for its efficiency and cost-effectiveness is finished." While the UK is getting closer to its European neighbors in the number of diesel sales, Strong believes this is not going to last.

AddVIDEO: GM's Paul Najt talks about HCCI engines

Last summer we had the chance to meet up with GM powertrain researcher Paul Najt and drive GM's prototype HCCI engines. Homegeneous charge compression ignition engines basically take some of the technical concepts behind diesel engines and combine it with a gasoline engine. The result is a new power system that achieves most of the benefit of diesel efficiency without the problems of soot and NOx emissions. As features like variable valve timing, direct fuel injection, cylinder pressure sensors

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