HCCI = More Miles, Less Fuel

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Traditional combustion event (left) and HCCI combustion event (right)

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More Miles...Less Fuel

HCCI, or homogenous charge compression ignition, ignites fuel and air by compressing it in the cylinder using a low temperature flameless release of energy throughout the combustion chamber, instead of a spark as in a gas or diesel engine. This results in all the fuel being burned simultaneously, leading to a 15% fuel savings and less carbon dioxide released, when combined with several additional advanced technologies.

Dr. Matthias Alt, GM Powertrain HCCI Project Manager, walks us through what the engine is actually doing as the vehicle starts and drives and explains why this technology is now available. Why not take a look at the Saturn Aura HCCI protype while your at it.

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Westlake Village, California 2008
Video Courtesy of General Motors Corporation


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