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AT A GLANCE
Page 61
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Acronyms galore
ABS— Anti-lock Braking System: Witl 25 years of mass market history behi it, there can be few drivers in the western world yet 10 have experience ABS. It's now fitted to 25% of new vehicles worldwide. But to recap, spi sensors on each wheel detect when a brake is about to lock and reduce braking effort momentarily.
EBS — Electronic brake force distribut System: A refinement of ABS that detects when individual brakes are operating outside their defined balan parameters due to weight transfer, etc. The amount of braking effort is regulated to restore correct balance.
BAS— Brakes Assist System: !dentine when an emergency stop is called foi and applies maximum braking effort.
ASR — Anti Slip regulation: Uses the ABS wheel-speed sensors to detect when any of the driving wheels are speeding up due to loss of grip. A reduction in engine power and application of the brake on the spinit wheel is used to restore traction.
ESP — Electronic Stability Programnr A further enhancement of all the abi thal adds steering angle detection a yaw (lateral acceleration) sensors to identify when the vehicle is not moving in the intended direction. Again, power reduction and selectiv braking of individual wheels bring things back into line.
fV1SR (German that translates as engine drag torque reduction"): Th latest refinement, currently fitted to the new VW Caddy and Touareg, USE ABS and ASR in reverse to detect an control wheels locking on over-run.