Effect of valve overlap and compression ratio on variation of measured performance with exhaust pressure of aircraft cylinder and on computed performance of compound power plant

Carroll S. Eian
naca-tn-2025
Feb 1950


An investigation was conducted on an aircraft liquid-cooled single-cylinder test engine (four-stroke-cycle spark-ignition type) equipped with direct fuel injection to determine the effect of valve overlap and compression ratio on variation of engine power and specific fuel consumption with exhaust pressure.

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