Checking venting quality of electrohydraulic braking system involves determining volumetric drain of main cylinder and line and of brake circuit, outputting warning if defined criteria unfulfilled

摘要

The method involves emptying the high pressure tank, refilling while measuring level and pump flow, comparing with desired values, operating the brake pedal with the isolating valve closed to subject brakes to defined pressure, releasing/reoperating the pedal, determining the volumetric drain of the main cylinder/line to isolating valve and of the brake circuit, comparing with desired values, outputting a warning if defined criteria not fulfilled. The method involves emptying the high pressure tank, refilling it while measuring its fill level and the volumetric pump flow, comparing the actual values with desired values, operating the brake pedal with the isolating valve closed so the wheel brakes are subjected to defined pressure, releasing the pedal, re-operating the pedal, determining the volumetric drain of the main cylinder and the line to the isolating valve and of the brake circuit and comparing with desired values and outputting a warning if defined criteria are not fulfilled.