1993-11-01

Comparison of Engine Dynamometer Test Procedures 933039

A comparison between ‘Quasi-Transient’ and Steady-State (SAE J1349) engine dynamometer horsepower test procedures was conducted to determine the degree of correlation between the two test methods. Measurements demonstrated that the peak horsepower and torque measured using both techniques was similar. This information is useful as a development tool, because the ‘Quasi-Transient’ procedure allows for data to be collected over the engine RPM range much faster then the Steady-State method, allowing for the accurate testing of more engine/exhaust configurations in a shorter amount of time.

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