Brake testing system for motor vehicles

摘要

A method and apparatus for testing motor vehicle anti-skid braking systems is disclosed which is particularly well suited for production line verification of the anti-skid braking system integrity. The method comprises monitoring the operation of a pressure generating device which operates intermittently to generate brake actuating pressure independently of application of the vehicle brake pedal while simultaneously and cyclically applying a predetermined operating force to the vehicle brake pedal and measuring the distance of travel thereof for each successive operation. The first phase of the test procedure enables verification of the operation of the pressure generating device and associated controls therefor whereas the second phase of the test sequence verifies the absence of fluid or pressure leakage in another portion of the braking system. The apparatus comprises sensor means operative to sense operation of the pressure generating device while simultaneously controlling operation of a pressure actuated device operative to sequentially and cyclically depress the vehicle brake pedal and simultaneously measure the amount of travel associated with subsequent applications of force thereto.