SG2007 Datasheet, PDF (1/6 Pages) Motorola, Inc – ELECTROHYDRAULIC BRAKING

Freescale Semiconductor, Inc.
Chassis/Safety
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
ELECTROHYDRAULIC BRAKING
SG2007/D, REV 0
12/2002
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.
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