Basically, there are two methods of brake control for railways --
the indirect method which operates through the compressed-air main and is normally used on
full-size railways, and the direct electro-pneumatic method which is mainly used on rapid
transit and suburban rolling stock. Pulse duration control is the preferred technique.
The Knorr-Bremse KE distributor valve for graduated brake release
has become the standard for indirect control on trains up to 1000 m (3,300 ft) long. It
converts the pressure in the main air brake pipes into a suitable pressure in the brake
cylinder. A complex modular system, designed to comply with UIC guidelines and using a
range of accessories, allows the basic valve to be adapted to a wide variety of different
types of vehicle -- Flexibility with System.
The panel design provides clarity of layout and easy servicing for
brake control systems. All the pneumatic components are built in as modules. Everything is
easily accessible and, if necessary, the whole panel can be removed for maintenance.
For long and heavy haul trains, the DB-60 direct release control
valve sets new performance benchmarks in AAR service. With the demand for lighter wagons
to carry heavier loads, the EL-60 Empty/Load control was developed to complement the full
range of products for all AAR needs.
DB 60 Distributor Valve |
|
KE Distributor Valve |
