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Concept: Honda RD Developing Variable Compression Ratio Engine with Dual Piston Mechanism

Green Car Congress

Engineers from Honda R&D Co., presented a pair of papers at the SAE 2009 World Congress describing the development of a variable compression ratio (VCR) engine enabled by a dual piston mechanism. Combining the high compression ratio with the Atkinson cycle, the engineering team demonstrated a 7.4% Kadota et al.

Honda 150
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Dalian team proposes jet controlled compression ignition to control PCCI phasing in a hybrid pneumatic engine

Green Car Congress

For the current study, the engine was derived from a single-cylinder, naturally aspirated, high-speed direct-injection (HSDI) diesel engine with a displacement of 0.418 L. 1999) “New cycles for automobile engines,” SAE Technical Paper 1999-01-0623 doi: 10.4271/1999-01-0623. Schechter, M.

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