Electrical system advances

摘要

Marcus Jacobson talks to three German tier-one systems suppliers. In the Bosch EHB system, Figs 1 and 2, foot pressure on the brake pedal no longer directly controls the braking effort applied. Instead, the pedal travel sensor 'communicates' with an ECU. The brake functions are controlled by the ECU, which receives inputs from a number of other signal inputs, including those from the vehicle control systems, which will modify the braking effort to suit the 'braking requirement'. There is an electric motor which drives the hydraulic power supply, which also features a high-pressure accumulator and a systems pressure sensor.