Diesel Engines for Automobiles 300014

EXPERIENCE with a large sedan and a roadster in which the original eight-cylinder engine had been replaced by a four-cylinder Diesel engine is recounted in the first part of this paper, including road driving and establishing an official speed record of 80.389 m.p.h. at Daytona Beach, Fla.
Then follows a description of the metering, injection and combustion processes of the Cummins engine, which are distinguished principally by the separation of the metering and injection operations so that the former is done at low pressure and the fuel is preheated and aerated before injection. Turbulence is caused and sooting of the injector orifices is prevented by the action of an air bottle in the piston-head.
Discussion of this paper and H. D. Hill's paper on Small Diesel Engines will be found beginning on p. 290 of the September, 1930, issue of the S.A.E. JOURNAL.


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