1971-02-01

A Correction Factor Investigation of a Turbocharged Diesel Engine 710821

The increased use of turbocharged diesel engines for automotive applications has accentuated the need for accurate power correction functions. The study's purpose was to evaluate the effect of dry ambient intake air pressure, ambient intake air temperature, engine speed, and humidity upon the performance of a turbocharged diesel engine. Each effect is examined individually and weighted in a final relationship for standardized horsepower. Power correction formulas, in a form readily comparable to typical correction functions, are derived from the results.
Testing was conducted through the use of various special test procedures, calibrations, and test equipment. With computer aid, test evaluation was conducted by utilizing various analytical and graphical methods. An accuracy comparison between actual and calculated values of power correction is presented.

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