Anti-Lock Brake System; Features/Construction - Acura 3.5 RL Manual

Anti-lock Brake System (ABS)

Features/Construction

When the brake pedal is pressed during driving, the wheels can lock before the vehicle comes to a stop. In such an event,
the maneuverability of the vehicle is reduced if the front wheels are locked, and the stability of the vehicle is reduced if the
rear wheels are locked, creating an extremely unstable condition. The ABS precisely controls the slip rate of the wheels to
ensure maximum grip force from the tires, and it thereby ensures maneuverability and stability of the vehicle.
The ABS calculates the slip rate of the wheels based on the vehicle speed and the wheel speed, then it controls the brake
fluid pressure to attain the target slip rate.
Grip Force of Tire and Road Surface
COEFFICIENT OF
FRICTION
TARGET SLIP RATE
ROTATIONAL
DIRECTION
RADIAL
DIRECTION
OF THE
ROTATIONAL
DIRECTION
SLIP RATE
Slip Rate
BRAKING
START POINT
A: Distance without slip
B: Slipped distance
C: Actual distance
NO: Normally Open
NC: Normally Closed