Bosch never tires of refining its ABS performance

German automotive component specialist Bosch is producing an improved version of its anti-lock ABS braking system.

The unit is 20 per cent smaller, lighter and quieter, plus it reduces braking distances, particularly on slippery surfaces.

The main improvement with the the ABS 8.1 unit is a more efficient control loop for the return pump motor, the speed of which can now be adjusted according to the driving position, Bosch says.

This improvement has allowed engineers to use a smaller electric motor, the decisive factor in achieving a downsizing of the unit.

The variable speed control provides a further reduction in pedal vibrations and noise. Bosch says its engineers have also succeeded in suppressing the intensity of the high-frequency noise from the unit.

The result is improvement in driver and passenger comfort and convenience.

On wet, snow or icy road conditions, ABS 8.1 reduces stopping distance even further.

Because the pump unit consumes less power than previously, the system will not drain the vehicle's electrical systems.

Bosch was the first supplier worldwide to offer an electronically controlled, mass-produced anti-lock braking system. It was first installed in 1978 in the Mercedes-Benz S-Class, then the BMW 7-Series.

Since its introduction, Bosch has produced and delivered more than 130 million brake control systems with the ABS function to OEMs throughout the world.