January 28, 2012
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The Dearman Engine Company is developing an engine that runs on what most people would not think of as fuel, liquid air.

Call it a new kind of cold fusion. The pistons get pushed by the pressure of rapidly expanding air in the cylinder. Liquid air is stored at -256 degrees Fahrenheit. The engine pumps liquid air into the cylinder along with what Dearman calls a heat exchange fluid. The liquid air very quickly changes to a gaseous state as it reaches ambient temperature, expanding at the same time. When the exhaust valves open, the only emission is air.

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Independent technology review and feasibility evaluation provides key step towards commercialization for liquid cryogen engine concept – aimed at competing with hydrogen fuel cells and pure battery electric systems in zero emissions applications.

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