A barometric pressure sensor.

Back pressure Sensor

Back Pressure Transducer

(1) Device to retard the motion of a vehicle or to prevent inadvertent movement when parked. (2) Dynamometer for measuring the power of an engine, originally a friction brake by which torque could be measured. Also brake dynamometer (informal).

A pressure container fitted into pumped hydraulic systems to maintain a reserve of pressure if the pump fails. They also smooth out the pump pulses in the system.

A mechanical device for taking up the free play in brake components. Can be either manually or automatically operated.

The splitting of brake effort to each axle in relation to the optimum that the axle can provide.

A friction material lined strap around a epicyclic gear annulus. Operated by hydraulic pressure to hold the annulus for gear ratio selection.

See brake servo.

The fixed component of a disc brake holding the pistons that apply an inward force to press the brake pads onto the rotor.