Anti Lock Braking System for Commercial Vehicles
ABS/ASR „D“-
„Cab“ - Version
Anti-Lock Braking System for Commercial Vehicles
1st Edition
Copyright WABCO 2006
Vehicle Control Systems
An American Standard Company
The right of amendment is reserved
Version 001/12.99(en)
8150100013 815 010 001 3
1 3
Page
1. INTRODUCTION 4
2. SYSTEM FUNCTIONS 5
3. SYSTEM DESIGN AND
COMPONENTS 8
4. ABS / ASR
SYSTEM DESCRIPTION 10
5. OTHER COMPONENTS 17
6. INSTALLATION 26
7. ANNEX 31
Contents ABS-D
4
1. Introduction
1. ABS-D Introduction
Anti-lock Braking Systems (ABS) or
- to use another common term - automatic anti-lock systems - are used to prevent a vehicle’s wheel from locking as a result of excessive operation of the service brake, especially on a slippery road surface.
Thus lateral control on the wheels being braked is maintained even at full brake application or in panic braking situations to ensure the cornering stability and steerability of a vehicle or a tractor-trailer combination to the greatest possible physical extent. At the same time, the objective is to optimize the utilization of the available adhesion coefficient between tyres and the road surface and thus vehicle retardation and stopping distance.
High-performance ABS for commercial vehicles was first introduced at the end of 1981 by Mercedes-Benz and WABCO after elementary systems had been used in the USA from the mid 70s.
System design and control principles of this 4-channel system with individual wheel control (4 sensors -
4 modulators, called 4S/4M below) were subsequently highly successful in the European market for commercial vehicles and became the basis for a world-wide standard for all commercial vehicles with power brakes. ABS and ASR have proved their value as 4- and 6-channel systems in commercial vehicles. The reliability of systems and components from series production is excellent, in spite of their complexity. The demand is rising not only in Germany and Europe or Israel and
„Cab“ - Version
Anti-Lock Braking System for Commercial Vehicles
1st Edition
Copyright WABCO 2006
Vehicle Control Systems
An American Standard Company
The right of amendment is reserved
Version 001/12.99(en)
8150100013 815 010 001 3
1 3
Page
1. INTRODUCTION 4
2. SYSTEM FUNCTIONS 5
3. SYSTEM DESIGN AND
COMPONENTS 8
4. ABS / ASR
SYSTEM DESCRIPTION 10
5. OTHER COMPONENTS 17
6. INSTALLATION 26
7. ANNEX 31
Contents ABS-D
4
1. Introduction
1. ABS-D Introduction
Anti-lock Braking Systems (ABS) or
- to use another common term - automatic anti-lock systems - are used to prevent a vehicle’s wheel from locking as a result of excessive operation of the service brake, especially on a slippery road surface.
Thus lateral control on the wheels being braked is maintained even at full brake application or in panic braking situations to ensure the cornering stability and steerability of a vehicle or a tractor-trailer combination to the greatest possible physical extent. At the same time, the objective is to optimize the utilization of the available adhesion coefficient between tyres and the road surface and thus vehicle retardation and stopping distance.
High-performance ABS for commercial vehicles was first introduced at the end of 1981 by Mercedes-Benz and WABCO after elementary systems had been used in the USA from the mid 70s.
System design and control principles of this 4-channel system with individual wheel control (4 sensors -
4 modulators, called 4S/4M below) were subsequently highly successful in the European market for commercial vehicles and became the basis for a world-wide standard for all commercial vehicles with power brakes. ABS and ASR have proved their value as 4- and 6-channel systems in commercial vehicles. The reliability of systems and components from series production is excellent, in spite of their complexity. The demand is rising not only in Germany and Europe or Israel and