braking circuit

A brake booster is used on virtually all vehicles which use hydraulic brakes for their primary braking circuit.

Triangulated braking circuits on non-ABS cars with both front calipers and one rear caliper per circuit.

The merged air from the parking-control valve prevents air-loss from only one braking circuit from causing the spring brakes to automatically apply.

In the current electrical system, a shutoff of engine power could also knock out the power-assisted system for both the primary and backup braking circuits, the company said.

Additional braking torque can be obtained by adding a braking circuit (resistor controlled by a transistor) to dissipate the braking energy.

However, on units with Triple Valves (Distributore tipo Westinghouse) and 7-position levers, braking circuit is slightly different.

Dashboard instruments include a speedometer and odometer along with an ammeter and gauges showing water temperature, oil pressure, fuel levels and, separately for each of the two braking circuits, air pressure.

Also inherited from the previous model was the combination of disc brakes at the front and drum brakes at the rear, but now with twin braking circuits as an additional safety feature, and servo-assistance.

There were also 15 inch wheels as against the 16 inch size found on previous Bristols, and the disc braking system dating back to the 406 was revised for the first time since then, with a greatly updated system of braking circuits being introduced.

September 1967 saw the introduction of twin braking circuits as an additional safety feature, and in February 1968 servo-assistance for the braking system was introduced as an option on most models and included in the price for the more expensive versions of the car.

From February 1967 the single hydraulic braking circuit was replaced by a dual circuit braking system: this built in reserve of redundancy in the braking control system reflected a growing interest in primary and secondary safety which was becoming a feature of German auto-design in the 1960s.