Map preparing method used for engine testing apparatus or vehicle testing apparatus, and engine testing apparatus

摘要: This invention provides a map preparing method used for an engine testing apparatus or vehicle capable of preventing peculiar driving state from being generated. comprising the steps of: varying throttle valve its fully closed position to opened while keeping rotation constantly, carrying out operation storing output torque Nm at that time using least three kinds different number, determining each obtained curves A SIMILAR E as actual machine data, and based on date, characterized by describing same X-Y plane when is prepared data; converting data function approximate e with respect opening degrees (X axis) making approximations curves; judging whether there exists intersection e; automatically correcting one c which can be judged such value Y1 y-piece curve seemed among intersecting b,c in step assumes medium Y2 , Y3 values y-pieces vertically adjacent b,d. And this enhancing simulation accuracy. calculating average direction S closing G variation speed 33; calculation representative corresponding operating mode driving, where number made constant 35 plurality 35, 36 36. also carry running high dynamometer 3 connected section 2a 2 under test tested, dynamo controller 3' controlling 3, actuator 5 degree test, are controlled adjust wherein commands temperature pattern 58 various portions around tested accordance chassis entire adjusting devices 51 provided test.