1990-10-01

A New ABS with Integral Automatic Traction Control for Air-Braked Trucks and Buses 902210

A new cost-reduced generation (C-Version) of ABS with integral drive slip control, so-called Anti-wheel Spin Regulation (ASR) or Automatic Traction Control (ATC) for trucks and buses has been developed for the different requirements and standards of the world market and also especially for US vehicles. The system is based on field experiences with Anti-Lock Braking System (ABS) for commercial vehicles in Europe, North America and Japan as well as with integrated ASR.This paper describes the modular system configurations and components some new features and control modes.New engine controls are realized with a new pneumatic servo valve or via a data link according to SAE-standard J 1708/1922 for the US-market.In addition the paper deals with the technology and lay-out of the new ECU, its EMC, failure detection and failure mode principles, diagnostic means according to the standards ISO 9141 or SAE J 1708/1587, as well as a dedicated blink-code.

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