1975-02-01

The Development of the New SAE Motor Vehicle Fuel Economy Measurement Procedures - ECONOMY MEASUREMENT PROCEDURES TASK FORCE 750006

A new fuel economy test procedure has been developed for passenger cars and light trucks that is basically similar to the established procedures used by U.S. automobile manufacturers. The new SAE procedure provides a standardized method for use in obtaining and comparing vehicle fuel economy values that relate to average conditions encountered in various modes of driving. The various aspects of the program discussed in the paper include road versus laboratory testing; existing procedures; evaluation, comparison and selection of test cycles; test repeatability amongst facilities; relation of test results to those obtained in actual customer usage; comparison of independent consumer survey results; and correction factor development and application.

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