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Performance of Several Combustion Chambers Designed for Aircraft Oil EnginesSeveral investigations have been made on single-cylinder test engines to determine the performance characteristics of four types of combustion chambers designed for aircraft oil engines. Two of the combustion chambers studied were bulb-type precombustion chambers, the connecting orifice of one having been designed to produce high turbulence by tangential air flow in both the precombustion chamber and the cylinder. The other two were integral combustion chambers, one being dome-shaped and the other pent-roof shaped. The injection systems used included cam and eccentric driven fuel pumps, and diaphragm and spring-loaded fuel-injection valves. A diaphragm type maximum cylinder pressure indicator was used in part of these investigations with which the cylinder pressures were controlled to definite valves. The performance of the engines when equipped with each of the combustion chambers is discussed. The best performance for the tests reported was obtained with a bulb-type combustion chamber designed to give a high degree of turbulence within the bulb and cylinder. (author)
Document ID
19930091350
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Joachim, William F
Kemper, Carlton
Date Acquired
September 6, 2013
Publication Date
January 1, 1928
Report/Patent Number
NACA-TR-282
Accession Number
93R20640
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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