1934-01-01

The Hesselman Low-Compression Diesel-Fuel-Burning Engine 340111

EIGHT different models of the Hesselman engine, ranging in bore from 3¾ to 6½ in. and in power from 25 to 170 hp., have been developed and produced since the first production engine was completed about two years ago, according to Mr. Pope, and hence it has passed the experimental stage. It is a low-compression engine that burns Diesel fuels.
Mr. Pope states that one of these production industrial engines has developed a mean effective pressure of 104 lb. per sq. in. and that a full-load economy of 0.58 lb. per b.hp-hr. has been obtained. Further, that its economy lies about half way between that of a carburetor engine and a Diesel engine.
The operation of the engine is described, suitable fuels for it are discussed, and data resulting from tests are presented. In conclusion, Mr. Pope states that the engine has provided a means for handling heavy fuels at low compressions.

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