J1256_198006 FUEL ECONOMY MEASUREMENT-ROAD TEST PROCEDURE—COLD START AND WARM-UP FUEL ECONOMY

This procedure incorporates a modified driving cycle replicate of consumer operation as contained and shown in SAE J1082b (January, 1979) and which is run on a suitable road or test track. The procedure yields cold start and warm-up fuel economy values indicative of consumer level at the ambient condition of the test. Within referenced limitations, the procedure can be utilized to determine the fuel economy differential among vehicles or between vehicle changes.