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Vacuum brake cylinder in running position: the vacuum is the same above and below the piston Air at atmospheric pressure from the train pipe is admitted below the piston, which is forced up. In its simplest form, the automatic vacuum brake consists of a continuous pipe—the train pipe—running throughout the length of the train.
A railway brake is a type of brake used on the cars of railway trains to enable deceleration, control acceleration (downhill) or to keep them immobile when parked. While the basic principle is similar to that on road vehicle usage, operational features are more complex because of the need to control multiple linked carriages and to be effective ...
The main competitor to the air brake is the vacuum brake, which operates on negative pressure. The vacuum brake is a little simpler than the air brake. Instead of an air compressor, steam engines have an ejector with no moving parts, and diesel or electric locomotives have a mechanical or electrical "exhauster".
The Indian locomotive class YDM-5 is a class of diesel–electric locomotive that was developed in 1964 by General Motors for Indian Railways. The model name stands for Metre gauge (Y), Diesel (D), Mixed traffic (M) engine, 5th generation (5). They entered service in 1964. A total of 25 YDM-5 locomotives was built between 1963 and 1964.
The company later moved to Romiley in the Metropolitan Borough of Stockport, Greater Manchester and changed its name to Davies and Metcalfe. It produced a range of locomotive engineering products including lubricators, exhaust steam injectors, vacuum brake ejectors etc. [2] They also manufacture the pneumatic disc brake systems used on modern trains including the V/Line Sprinter and British ...
The brake system on railcars No. 2, 3 and 4 was unconventional. Instead of the usual vacuum-actuated tread brakes used on most British rolling stock of the period, an automotive-style system was adopted, utilising vacuum-hydraulically actuated drum brakes. A vacuum brake cylinder and hydraulic master cylinder set was mounted on each bogie.
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The alarm chain in a passenger coach is designed to create a break in the continuity of the brake pipes (whether vacuum or air brakes), immediately resulting in a loss of brake pressure (or vacuum) and thereby causing the train brakes to be applied. With vacuum brakes, a clappet valve is provided, which is released by the pulling of the alarm ...