TRW, of Cleveland, said it also has signed a contract with a North American automaker to develop a regenerative braking system based on TRW's electro-hydraulic brake system.
TRW's electro-hydraulic system replaces the conventional brake booster with a brake pedal simulator, while an electro-hydraulic unit in the engine compartment generates the braking energy. The pedal simulator communicates the driver's braking demand to the modulator, and a closed loop pressure control measures the pressure at the wheels every millisecond.
All brake applications are carried out by the system and not by the energy of the driver's foot on the pedal.
In case of electrical failure, the system is equipped with a secondary hydraulic braking system that function like a conventional braking system.