Trailer braking system
AssigneeKNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
InventorsMatthew Fry, Martin Mederer, Stefan Pahl, Florian Finkl, Thomas Steer, Christian Staahl
Life of this patent
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Abstract
A brake system for a trailer has first and second pneumatic circuits for supplying air pressure to the wheel ends on the trailer. The air pressure to brake devices at the wheel ends is controllable via a first brake ECU. First and second pressure control valves control pressure from the pneumatic circuits to the respective wheel ends. The system further has a second ECU adapted to electrically control the actuation of the pressure control valves.
Claims11
A trailer brake system for a trailer vehicle having a plurality of axles, each of said axles having a wheel end on a respective side of the vehicle, the brake system comprising:
- first and second pneumatic circuits for supplying air pressure to braking devices at the wheel ends, the air pressure to the wheel ends being controllable via a first brake ECU carried by the trailer vehicle;
- first and second pressure control valves on each of the respective sides of the vehicle, which pressure control valves control pressure from the pneumatic circuits to the respective wheel ends, wherein
- the system further comprises a second ECU carried by the trailer vehicle, which second ECU is adapted to electrically control actuation of the pressure control valves.
A trailer brake system for a trailer vehicle having a plurality of axles, each of said axles having a wheel end on a respective side of the vehicle, the brake system comprising:
- first and second pneumatic circuits for supplying air pressure to braking devices at the wheel ends, the air pressure to the wheel ends being controllable via a first brake ECU;
- first and second pressure control valves on each of the respective sides of the vehicle, which pressure control valves control pressure from the pneumatic circuits to the respective wheel ends, wherein
- the system further comprises a second ECU, which second ECU is adapted to electrically control actuation of the pressure control valves, wherein
- the pneumatic output of a trailer brake module is fed to a selector valve, which selector valve controls the flow of air to the wheel ends via a respective pressure control valve assembly, and
- wherein the selector valve comprises two or three 3/2 valves which select one pressure source out of an available two, which pressure is for two different output channels.
A trailer brake system for a trailer vehicle having a plurality of axles, each of said axles having a wheel end on a respective side of the vehicle, the brake system comprising:
- first and second pneumatic circuits for supplying air pressure to braking devices at the wheel ends, the air pressure to the wheel ends being controllable via a first brake ECU;
- first and second pressure control valves on each of the respective sides of the vehicle, which pressure control valves control pressure from the pneumatic circuits to the respective wheel ends, wherein
- the system further comprises a second ECU, which second ECU is adapted to electrically control actuation of the pressure control valves;
- and
- a secondary brake module, which module is a one channel electropneumatic module comprising a 3/2 solenoid valve arrangement and a relay valve.
A trailer brake system for a trailer vehicle having a plurality of axles, each of said axles having a wheel end on a respective side of the vehicle, the brake system comprising:
- first and second pneumatic circuits for supplying air pressure to braking devices at the wheel ends, the air pressure to the wheel ends being controllable via a first brake ECU;
- first and second pressure control valves on each of the respective sides of the vehicle, which pressure control valves control pressure from the pneumatic circuits to the respective wheel ends, wherein
- the system further comprises a second ECU, which second ECU is adapted to electrically control actuation of the pressure control valves, wherein
- the pneumatic output of a trailer brake module is fed to a selector valve, which selector valve controls the flow of air to the wheel ends via a respective pressure control valve assembly, and
- wherein
- the selector valve and a secondary pressure modulator are integrated into one component with integrated control provided by a further ECU.
Dependencies are inferred from the claim text.