Behaviour of a vehicle brake system is tested in dependence on operation of a brake pedal (P, fig 2). A first graphical indicator 45 is displayed on a display screen 9 to indicate a target brake pedal travel or a target brake pedal load. A second graphical indicator 55 is displayed on the display screen 9, preferably a touch screen, to represent the measured brake pedal travel or the brake pedal load. The brake pedal (P, fig 2) is displaced at least substantially to match the measured brake pedal travel to the target brake pedal travel or to match the measured brake pedal load to the target brake pedal load. A hydraulic system pressure is monitored, preferably via connection to the vehicle communication network, as the brake pedal is displaced to determine if the vehicle brake system satisfies one or more predefined metrics. A pedal measurement apparatus (7) using a position transducer to measure pedal travel relative to the steering wheel is also disclosed (figs 2a & 2b). The testing may be vehicle specific, and may use a barcode reader 11 to determine the specification of the vehicle to be tested.
Pedal feel test apparatus and method
2015-12-09
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE |