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Novel opposed-piston free-piston linear generator for hybrids seeks to overcome drawbacks of earlier designs

Green Car Congress

Secondly, the central combustion chamber is benefit for highly efficient scavenging via intake and exhaust ports without using valves. —Ling Huang 2012. Huang 2012. Ling Huang (2012) An Opposed-Piston Free-Piston Linear Generator Development for HEV (SAE 2012-01-1021) doi: 10.4271/2012-01-1021.

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Achates Power developing light-duty two-stroke opposed-piston diesel engine: the OP4

Green Car Congress

Achates Power, which is developing a family of two-stroke, compression-ignition (CI) opposed-piston (OP) engines, has designed and is developing a light-duty diesel concept engine, the OP4. Achates started with a 1.06L/cylinder engine configuration, then moved up to a 1.6L/cylinder g/kWh engine-out NO x.

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LiquidPiston introduces latest X-series version of HEHC rotary engine; targeting 58% peak BTE, 2 hp/lb power density

Green Car Congress

(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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