Description

(from chassis no. ...)

DESCRIPTION

The BOSCH 5.3 ABS optimises the compactness (ease of assembly), lightness and reliability of the previous versions of anti-lock systems.

The use of new micro-hybrid electronic components, optimisation of the flows owing to the study of new more compact shapes of the valve bodies and the reduction of the number of hydraulic components, have made it possible to improve the characteristics of the solenoid valves.

An EBD (Electronic Braking force Distribution) function has also been implemented in the system which makes adjustment of the braking force at the rear wheels directly by the electronic control unit, eliminating the mechanical pressure regulator.

The main components of the system are:

• new electronic control unit which is more powerful and versatile than the previous models, integrated in the electrohydraulic control unit;
• electrohydraulic control unit which modulates the braking pressure at the brake calipers through eight solenoid valves, two per wheel.
• four sensors, one per wheel, which detect the angular rotation speed of the wheels themselves.

The system is completed by:

• hydraulic system piping;
• a specific wiring loom;
• a switch on the brake pedal to detect the braking condition;
• two warning lights on the check panel.

1. Brake fluid reservoir
2. Brake pump
3. Vacuum servobrake
4. Electrohydraulic control unit with incorporated electronic control unit
5. Front wheel revolution sensor
6. Front brakes
7. Failure warning lights
8. Stop lights control switch
9. Rear wheel revolution sensor
10. Rear brakes