RESULTS of tests on several motor cars reported in his paper, Mr. MacCoull comments, “make one wonder if it is economically necessary for a car to be completely free from knock at all times.” Use of a spark retarded slightly from that required for optimum power, he found, resulted in a trivial power loss, but appreciably lowered the octane requirement.In additional tests on a single-cylinder CFR engine, where power output and various temperatures were studied, as the compression was raised above the critical compression ratio, the author found that:
Power Loss Accompanying Detonation
Sae Technical Papers
Pre-1964 SAE Technical Papers ; 1906
1939-01-01
Conference paper
English
Pressure waves accompanying detonation in internal combustion engine
Engineering Index Backfile | 1938
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