Bosch has begun making an updated version of its antilock braking system (ABS) which is 20% smaller, and is lighter, quieter and more efficient in operation than previous versions.
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Dubbed ‘Bosch ABS 8.1’, the redesigned system is claimed to further reduce braking distances, particularly on slippery surfaces, and produces less brake pedal vibrations.
“This new version meets the objectives of [vehicle makers] for a greater reduction in weight and installation space,” said a Bosch spokesman.
The main improvement is a more efficient control loop for the return pump motor, the speed of which can now be adjusted according to the driving position. This has allowed the use of a smaller electric motor, a decisive factor in achieving a smaller overall size.
The pump and valve triggering have also been improved. The most compact version, combining hydraulic unit and electronic control unit, now measures less than one litre in volume and weighs 1.4 kilograms.
Variable speed control provides a claimed reduction in pedal vibrations and noise – notably high-frequency noise. The new pump also consumes less power than previous versions.
Bosch pioneered electronically controlled, mass-produced antilock braking which was installed first in the 1978 Mercedes-Benz S-Class and BMW 7-series models.
Bosch has since produced over 130 million units.
