2013 Concept Engine Emissions Exhaust 
Green Car Congress
MAY 8, 2014
The MkII Clarke-Brayton Engine is a boxer-configuration split-cycle engine implementing what Motiv calls the Clarke-Brayton cycle. Motiv suggests that the MkII engine will be up to twice as efficient as a conventional automobile engine and up to 20% more efficient than modern diesel engines. and O’Malley, E.
Green Car Congress
MAY 9, 2013
A cryogenic engine such as the Dearman piston engine produces zero emissions at the point of use; has low greenhouse gas emissions provided the liquid air or nitrogen is produced from low carbon electricity; has energy and power density on a level with battery electric technology; and has the potential for rapid refueling.
Green Car Congress
OCTOBER 18, 2012
(LPI), the developer of engines based on its High Efficiency Hybrid Cycle (HEHC)( earlier post ), introduced the latest version of its X-series of rotary engines embodying HEHC at the US Department of Energy’s (DOE) 2012 Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Dearborn, Michigan.
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