SG2007D

Freescale Semiconductor, Inc. Chassis/Safety ELECTROHYDRAULIC BRAKING KEY BENEFITS SG2007/D, REV 0 12/2002 Freescale Semiconductor, Inc... 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 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. For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Pedal Sensor Hydraulic Pump Accumulator EHB Control Unit MCU Output Driver Hardware Backup V...