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  2. Automotive Service Excellence - Wikipedia

    en.wikipedia.org/wiki/Automotive_Service_Excellence

    ASE offers certification tests for automotive professionals through Prometric Test Centers. [3] These involve several exams, the passing of which, added with two years of relevant hands-on work experience, will merit certification. [4] The required experience can be substituted by one year of on-the-job training and a two-year training degree. [5]

  3. Air brake (road vehicle) - Wikipedia

    en.wikipedia.org/wiki/Air_brake_(road_vehicle)

    Truck air-actuated disc brake. An air brake or, more formally, a compressed-air-brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to both release the parking/emergency brakes in order to move the vehicle, and also to apply pressure to the brake pads or brake shoes to slow and stop the vehicle.

  4. Fail-safe - Wikipedia

    en.wikipedia.org/wiki/Fail-safe

    Air brakes on railway trains and air brakes on trucks. The brakes are held in the "off" position by air pressure created in the brake system. Should a brake line split, or a carriage become uncoupled, the air pressure will be lost and the brakes applied, by springs in the case of trucks, or by a local air reservoir in trains.

  5. Air brake - Wikipedia

    en.wikipedia.org/wiki/Air_brake

    Air brake (aeronautics), a type of flight control system used on aircraft to reduce speed; On ground vehicles, (more formally, specified as) compressed-air-actuated braking systems: Air brake (road vehicle), friction-mediated type of brake used on large road vehicles in place of hydraulic brakes; Railway air brake (used on both locomotives, and ...

  6. Relay valve - Wikipedia

    en.wikipedia.org/wiki/Relay_valve

    In a dual-circuit air brake system, air from both the primary and secondary reservoirs is fed into the supply-port of the parking-control valve, as well as the supply-port of this relay valve; it is merged via yet another two-way check valve. The delivery-port output of the parking-control valve connects to the control-port of this relay valve ...

  7. Railway air brake - Wikipedia

    en.wikipedia.org/wiki/Railway_air_brake

    A railway air brake is a railway brake power braking system with compressed air as the operating medium. [1] Modern trains rely upon a fail-safe air brake system that is based upon a design patented by George Westinghouse on April 13, 1869. [2] The Westinghouse Air Brake Company was subsequently organized to manufacture and sell Westinghouse's ...

  8. New York Air Brake - Wikipedia

    en.wikipedia.org/wiki/New_York_Air_Brake

    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 ...

  9. Brake bleeding - Wikipedia

    en.wikipedia.org/wiki/Brake_bleeding

    Brake bleeding is the procedure performed on hydraulic brake systems whereby the brake lines (the pipes and hoses containing the brake fluid) are purged of any air bubbles. This is necessary because, while the brake fluid is an incompressible liquid , air bubbles are compressible gas and their presence in the brake system greatly reduces the ...