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GM'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 combust. The hard part is controlling the pressure, ... Read more →

GM HCCI engine can operate at idle Sam Abuelsamid

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 ...

VIDEO: GM's Paul Najt talks about HCCI engines Sam Abuelsamid

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 ...

GM's HCCI engines now run from idle to 60 mph! 6 months ago on Autoblog Green

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 ...

GM HCCI engine can operate at idle 1 year ago on Autoblog Green

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 ...

VIDEO: GM's Paul Najt talks about HCCI engines 1 year ago on Autoblog Green

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 ...


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