Apparatus and method for testing using dynamometer

Abstract

A test method for a vehicle powertrain includes, during a first test of a first vehicle or a portion of a first vehicle on a dynamometer, coordinatingly controlling (i) an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to a load schedule and (ii) the dynamometer according to a speed schedule such that the dynamometer applies dynamic torque that causes a powertrain of the first vehicle or portion of the first vehicle to produce dynamic powertrain torque. The test method also includes recording values defining a history of the dynamic torque, and during a second test of the first vehicle or portion of the first vehicle on the dynamometer or another dynamometer, or during a second test of a second vehicle or a portion of a second vehicle on the dynamometer or another dynamometer, coordinatingly controlling (iii) an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to the values defining the history of the dynamic torque and (iv) the dynamometer or the another dynamometer according to the speed schedule such that the dynamometer or the another dynamometer applies dynamic torque that causes a powertrain of the first vehicle or portion of the first vehicle or a powertrain of the second vehicle or portion of the second vehicle to reproduce the dynamic powertrain torque.

Dependencies are inferred from the claim text.