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dc.creatorUnited States. Army. Air Service. Engineering Division.en_US
dc.date.accessioned2018-07-19T15:04:29Z
dc.date.available2018-07-19T15:04:29Z
dc.date.created1921-07-15en_US
dc.identifier.urihttp://hdl.handle.net/11200/49161
dc.descriptionThe object of this test was to determine the performance of the twelve-cylinder Liberty engine with a compression ratio of 6.5 to 1, using different grades of gasoline, with and without "anti-knock compounds", or "dope". The power output of the engine equipped with 6.5 to 1 compression ratio pistons was approximately 10 per cent greater with the standard carburetor settings and doped aviation gasoline than with the standard Liberty engine equipped with 5.42 to 1 compression ration pistons. The fuel consumption was also approximately 10 per cent lower. A significant fact revealed by this test is that throttling down high compression ratio engines to run on undoped aviation gasolines without detonation at sea level is not possible without a marked loss in power.en_US
dc.formatPDFen_US
dc.publisherWashington, D.C. : Chief of Air Serviceen_US
dc.relation.ispartofseriesAir Service information circular (Aviation) ; v. 3, no. 261en_US
dc.relation.ispartofseriesMcCook Field report ; Serial no. 1589en_US
dc.subjectAirplanes--Motors--Testingen_US
dc.subjectAirplanes--Fuelen_US
dc.subjectGasoline--Testingen_US
dc.subjectAirplanes--Fuel consumptionen_US
dc.subjectAirplanes--Fuel systemsen_US
dc.subjectMotor fuels--Additivesen_US
dc.subjectMotor fuels--Anti-knock and anti-knock mixturesen_US
dc.subjectGasoline--Anti-knock and anti-knock mixturesen_US
dc.titlePerformance of the twelve-cylinder Liberty engine with a compression ratio of 6.5 to 1en_US
dc.typeTexten_US


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