Patent ID: 8001835
Filing Date: 2011-08-23
Classification: G01L,G01M

Abstract:
1. A method for dynamometer testing of a motor vehicle, the motor vehicle having a front end and a rear end and a right side and a left side, as seen in a driving direction, and/or vehicle components, by measuring torque and rotational speed on drive shafts of the motor vehicle, said method comprising the steps of applying a braking torque to each one of said drive shafts by individual hydraulic dynamometer test units by throttling hydraulic fluid flows, and said braking torque being adjustable for each individual one of said drive shafts such that a resulting individual rotational speed for that shaft corresponds to a virtual vehicle speed when driving the motor vehicle on a road, compensated with a slip value with said virtual vehicle speed being equal for all drive shafts, and retrieving the compensating slip-value from a tire model.