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

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

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

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

Delphi 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

Lotus: 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 sinc

Lotus' 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 j

GM's FYI Blog introduces HCCI technology

If you happen to listen to the AutoblogGreen podcast, you already know how we feel about the potential of HCCI engine technology. If you don't listen to our podcast, (first of all, why not?) you can learn about the new engine type in our entire category dedicated to HCCI. Being that this is a new technology, not much is filed away under that HCCI tag tho

GM shows off HCCI engines in working prototypes

We've talked about homogeneous charge compression ignition (HCCI) engines in the past, particularly how their complex process of producing energy equals that of a diesel in terms of efficiency, while not requiring expensive exhaust after-treatment systems to clean up emissions. Billed as the ideal marriage of gas and diesel engines, HCCI up until now has been a l

MIT helps Ford apply pressure

Ford is looking for ways to pack their automobiles with innovative technology that achieves the seemingly impossible goal of using smaller, more efficient engines while still delivering the performance wallop customers are demanding. Not only is the Blue Oval seeking more involvement from their suppliers to push new technology and techniques forward, but the automaker's also looking outside the typical realm of automotive OEMs.

MIT researchers say HCCI cleaner, more efficient engine

We're not gonna try to explain all the physics involved in this new engine design. That's for all you Autoblog readers with engineering degrees to do in the comments. But, from what we understand, MIT researchers have taken a long hard look at an engine design called homogeneous charge compression ignition (HCCI) and say it could run cleaner and more efficiently than current popular engine designs.

AutoblogGreen Q&A: Dr. Gary Smyth, director of powertrain research at GM

During the recent SAE World Congress in Detroit Dr. Gary Smyth participated in a panel on new generation drivetrains beyond 2015. Dr. Smyth had some interesting things to say about the internal combustion engines and where they are going so AutoblogGreen arranged to talk to him afterwards. Dr. Smyth is the Director of Global Powertrain Research and Development at General Motors. This is the transcript to the interview in the latest Sam Abuelsamid

Chevy Volt could end up with radically different engine!

By now plenty of people have seen concept vehicles like the Chevy Volt and Ford HySeries Drive Edge. One of the biggest advantage of the series hybrid drivetrains in these machines is the flexibility they provide in choosing an auxiliary power unit. With the battery system providing the primary energy source to the electric motor the transient load demands of acceleration are taken off the range extender. This allows the range extender to operate in a constant mode doing nothing more than drivi

Tweaking the vehicle computer for better mileage

I'm very much of the opinion that sophisticated computer engine controls and more precise hardware such as high-pressure fuel injectors are the key to short-term fuel-economy improvements in current gas engines. Other drastic measures such as small-displacement, turbocharged engines will require more involved engineering, and there's still a future for exotic measures such as HCCI and even plasma combustion. But I spoke with two calibration engineers at SEMA who help develop aftermarket tuning c

HCCI sensor contract awarded to TIAX

News and developments on Homogeneous Charge Compression Ignition (HCCI) technology doesn't seem to pop up very often, so you can imagine that our ears perk up every time we come across something new no matter how small. On Wednesday, technology development firm TIAX announced that it was awarded a $400,000 contract by the U.S. Department of Energy to develop sensor technology that will help to control

HCCI update: Prototype in 2008

A couple months ago, Bruno pointed AutoblogGreen readers to a New York Times article summarizing the current status of Homogeneous Charge Compression Ignition (HCCI) engines, technology that attempts to take the best of both diesels and gasoline-fueled internal combustion engines. This Engineer Online article<

HCCI: Combining gasoline and diesel combustion

The New York Times has a nice summary on a form of combustion all major automakers are actively pursuing, called HCCI, short for homogenous charge compression ignition. HCCI was discovered quite some time ago through investigation of so-called "run-on", the continued running of an engine after the ignition was switched off, common with engines of late 1970's vintage. Gasoline engines can be designed for v

Automakers, suppliers meet to discuss diesel plans

The aptly named Diesel Forecast is reporting on a diesel technology discussion involving BMW, Volvo, Audi, and Bosch, and the path that each may take to address the increasingly-stringent emission requirements in the U.S. and in Europe.