Back to results
US 11,397,132 B2Granted
Apparatus and method for testing a vehicle powertrain using a dynamometer
AssigneeHoriba Instruments, Inc.
InventorLeo Alphonse Gerard Breton
Life of this patent
Estimating the term…
Abstract
A test method for a vehicle powertrain includes, during a first test in which dynamic engine torque from a powertrain drives a vehicle on a road, recording throttle position or accelerator pedal position to define a throttle schedule, and recording engine speed to define an engine speed schedule. The test method further includes, during a second test of a vehicle engine, controlling a dynamometer and the vehicle engine according to the engine speed schedule and throttle schedule to reproduce the dynamic engine torque.
Claims5
A test method comprising:
- during a first test of a vehicle on a road while an engine of the vehicle is applying dynamic torque, recording throttle positions or accelerator pedal positions to define a driver demand schedule, and recording corresponding speeds of the engine to define a corresponding engine speed schedule;
- and
- during a second test of a vehicle engine, causing the vehicle engine to reproduce the dynamic torque by simultaneously controlling (i) a throttle or accelerator pedal and (ii) a speed of the vehicle engine using a dynamometer to simultaneously replicate the driver demand schedule and corresponding engine speed schedule.
Dependencies are inferred from the claim text.