1941-01-01

Evaluation of DIESEL FUELS in Full-Scale Engines (Report of the Cooperative Fuel Research Committee) 410134

THE CFR Full-Scale Engine Group was organized by engine men representing the major classifications of automotive-type diesel engines. This original group, with the cooperation of the representatives of the petroleum industry, the government agencies, and colleges, has carried on extensive series of tests on commercial diesel engines.
The purpose of the investigation was to determine the influence of fuel properties such as cetane number, viscosity, volatility, and gravity on the engine performance. The following relationships are indicated:
Starting and engine smoothness are dependent upon the ignition quality of the fuel.
Smoke and engine deposits vary with the volatility and viscosity.
Exhaust odor varies with ignition quality and cetane number.
Power output and fuel consumption vary with the heat value of the fuel.
At a given pump setting, viscosity may have an independent effect on the power output because of plunger leakage.
The limited number of fuels used in this series of tests made it impossible to isolate all fuel properties and their effect on fuel performance, but the results obtained will guide future investigations.

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