DR engines were not equipped with their own brake cylinders so that only the attached wagons were air-braked.
12.
The brake cylinder is contained in a larger housing this gives a reserve of vacuum as the piston operates.
13.
An interlocking valve limits to 0.4 bars the pressure into the brake cylinders of the ALes when electrically braking.
14.
However, air brakes can be made much more effective than vacuum brakes for a given size of brake cylinder.
15.
On the steam locomotives, steam is applied to a small brake cylinder that acts on the driver's side brakes.
16.
For braking on each axle two disc brakes with 640 mm diameter, brake cylinders and automatic slack adjuster are provided.
17.
Air in the upper part of the brake cylinders is also exhausted from the train pipe, through a non-return valve.
18.
In 1903 a revised brake cylinder was introduced, that included'accelerating valves'allowing air directly into the cylinder in an emergency application.
19.
As the brake pipe pressure reduces, the service portion on each car divert air from their reservoirs to their brake cylinders.
20.
The front engine unit had two diameter vacuum brake cylinders, while the hind engine units were provided with steam and hand brakes.
