Brake system for railway vehicles
First Claim
1. A brake system for a rail vehicle having at least two bogies comprising:
- a main air reservoir line fed by a compressed-air generating device;
a compressed-air line connecting the main air reservoir line with a pneumatic brake unit on each bogie;
the pneumatic brake unit including a relay valve controlling pressure in a spring-loaded brake on an output of the relay valve with pressure at an input of the relay valve in response to an air control signal, an electro-pneumatic pressure control device providing a first air control signal, an emergency pressure device providing a second air control signal, and an electro-pneumatic switch-over device for selecting one of the two air control signals for the relay valve; and
an electrical control system at each bogie controlling the electro-pneumatic pressure control device and the electro-pneumatic switch-over device in response to electrical braking signals, the electrical control system using the electro-pneumatic pressure control device for service and emergency electrical braking signals and controls the switch-over device to select the second air control signal if emergency braking is not correctly initiated by the electro-pneeumatic pressure control device.
1 Assignment
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Accused Products
Abstract
The invention relates to a brake system (100) for a railway vehicle (1). Said brake system comprises a main air reservoir line which is fed by an air compressor unit (22). Every bogie truck (3) is provided with at least one compressed-air line which is connected to the main air reservoir line either directly or via a stop valve, a non-return valve and a compressed-air reservoir. The compressed-air line feeds, for example, the service brake valves for impinging the brakes of the bogie truck (3) or a control unit for the spring-loaded brake and/or other control units for other auxiliary components. The service brake valves and/or the spring-loaded brake and/or other auxiliary components are controlled via at least one local, electronic brake control unit (31).
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Citations
14 Claims
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1. A brake system for a rail vehicle having at least two bogies comprising:
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a main air reservoir line fed by a compressed-air generating device;
a compressed-air line connecting the main air reservoir line with a pneumatic brake unit on each bogie;
the pneumatic brake unit including a relay valve controlling pressure in a spring-loaded brake on an output of the relay valve with pressure at an input of the relay valve in response to an air control signal, an electro-pneumatic pressure control device providing a first air control signal, an emergency pressure device providing a second air control signal, and an electro-pneumatic switch-over device for selecting one of the two air control signals for the relay valve; and
an electrical control system at each bogie controlling the electro-pneumatic pressure control device and the electro-pneumatic switch-over device in response to electrical braking signals, the electrical control system using the electro-pneumatic pressure control device for service and emergency electrical braking signals and controls the switch-over device to select the second air control signal if emergency braking is not correctly initiated by the electro-pneeumatic pressure control device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification