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GM Ecotec engine
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==HCCI== At Tech Show Torino 2008, GM Powertrain Europe announced the ignition-less [[HCCI]] (Homogeneous Charge Compression Ignition) mode of the [[Gasoline direct injection|direct injection]] version of 2.2 L engine.<ref name=2.2_HCCI>{{cite web | url=http://mediaassets.gmeuropearchive.info/viewcatalogue.php?catid=108560&lng=EN|title = A Look Into the Future of Engines and Transmissions| author=General Motors Europe|date=May 2008|at= CONTROLLED AUTO-IGNITION HCCI}}</ref> The HCCI version is equipped with two-step adjustable valve lift with variable cam phasing and advanced ECU with cylinder pressure sensors, uses a lean-burn cycle similar to that of a [[diesel engine]], and is claimed to further reduce fuel consumption by 15%.<ref>{{cite web|title=HOMOGENEOUS CHARGE COMPRESSION IGNITION – HCCI|url=http://archives.media.gm.com/us/gm/en/technology/advanced_technology/fuels/hcci.doc|website=media.gm.com|access-date=30 July 2014}}</ref>
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