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Additional safety features included a pressure proportioning valve in the rear brake circuit, [7] power-boosted brakes and hazard warning lights. [3] Indicator, headlight dipping, headlight flashing and windscreen wiper controls were now housed in a steering column stalk. [ 1 ]
A cross-section of a proportioning safety valve. A proportioning valve is a valve that relies on the laws of fluid pressure to distribute input forces to one or more output lines. Proportioning valves are frequently used in cars and other road vehicles to reduce the brake fluid pressure to the rear brakes. Due to weight distribution during ...
The brake balance or brake bias of a vehicle is the distribution of brake force at the front and rear tires, and may be given as the percentage distributed to the front brakes (e.g. 52%) [1] or as the ratio of front and rear percentages (e.g. 52/48). [2]
Relay valves are necessary in heavy trucks in order to speed-up rear-brake application and release, since air takes longer to travel to the rear of the vehicle than the front of the vehicle, where the front service brakes, foot-valve, parking-control valve, and trailer-supply valve (if applicable) are located. Without relay valves, it would ...
Valves There is a valve in the brake line of each brake controlled by the ABS. On some systems, the valve has three positions: In position one, the valve is open; pressure from the master cylinder is passed right through to the brake. In position two, the valve blocks the line, isolating that brake from the master cylinder.
A combined braking system (CBS), also called linked braking system (LBS), is a system for linking front and rear brakes on a motorcycle or scooter. [1] In this system, the rider's action of depressing one of the brake levers applies both front and rear brakes. The amount of each brake applied may be determined by a proportional control valve ...
Incorrect brake pad linings; Greasy brake pad linings, faulty proportioning valve, misadjusted master cylinder pushrod Noisy braking (grinding or screeching sounds when braking) Extremely worn brake pads, brake pad(s) not fitted correctly, faulty or missing brake pad shim, brake pad wear indicator Vibration under braking
New York Air Brake gauges to control a Rotair Valve Westinghouse Air brake [1] Westinghouse and New York Air Brake began development of a replacement for the venerable "K Brake" in 1929. The Great Depression slowed, but did not stop, development of the new brake and, in April 1932, New York Air Brake began construction of a 200-car test track ...