OVERVIEW

Electrohydraulic braking (EHB) systems are designed to allow electronic control of vehicle braking while retaining a reduced hydraulic system. The hydraulic system functions as a reserve in the event of a failure in the electronic control.

The EHB control unit receives inputs from sensors connected to the brake pedal. In normal operation, a backup valve is closed and the controller activates the brakes of the wheel through an electric motor driven hydraulic pump. When the controller goes into a fail-safe mode, the backup valve is opened, which allows the brakes to be controlled through a conventional hydraulic circuit.

KEY BENEFITS

• Reuses hydraulic system technology while incrementally building on the development of advanced electronic systems, such as electronic stability programs (ESP), traction control, and brake assist

• Uses software updates to simplify the calibration process by adjusting brake response and pedal feel

• Improves connectivity with other emerging systems, such as adaptive cruise control

• Removes the large vacuum servo to allow flexible installation

• Features an anti-lock braking system (ABS) without feedback from the pedal