Service brake control system for a combination vehicle

Patent metadata

Field	Value
Publication number	US-12589722-B2
Application number	US-202318509615-A
Country	US
Kind code	B2
Filing date	Nov 15, 2023
Priority date	Nov 15, 2023
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A service brake control system for a combination vehicle including a towing member and first and second towed members includes an electro-pneumatic brake control valve on the first towed member that delivers fluid pressure through a delivery port in response to an electronic control signal that is generated by a brake controller on the towing member. A double check valve includes a first supply port in fluid communication with a forward fluid coupling on the first towed member that delivers a first fluid control signal from the towing member, a second supply port in fluid communication with the delivery port of the electro-pneumatic brake control valve and a delivery port in fluid communication with a rear fluid coupling on the first towed member that delivers a second fluid control signal from the double check valve to the second towed member.

First claim

What is claimed is:

1 . A service brake control system for a combination vehicle including a towing member and first and second towed members, comprising:
a first electro-pneumatic brake control valve configured for mounting on the first towed member and configured to output fluid pressure from a fluid source received at a supply port on the first electro-pneumatic brake control valve through a first delivery port on the first electro-pneumatic brake control valve responsive to an electronic control signal that is generated by a brake controller on the towing member; and, a double check valve having a first supply port in fluid communication with a forward fluid coupling on the first towed member that is configured to deliver a first fluid control signal from the towing member to the first towed member, a second supply port configured for fluid communication with the first delivery port of the first electro-pneumatic brake control valve and a delivery port in fluid communication with a rear fluid coupling on the first towed member and configured to deliver a second fluid control signal from the double check valve on the first towed member to the second towed member.

2 . The system of claim 1 wherein the first electro-pneumatic brake control valve further includes a control port in fluid communication with the forward fluid coupling on the first towed member and configured to receive the first fluid control signal.

3 . The system of claim 1 , further comprising a second electro-pneumatic brake control valve configured for mounting on the first towed member and configured to output fluid pressure from the fluid source to a wheel brake on the first towed member responsive to the electronic control signal.

4 . The system of claim 3 wherein the first electro-pneumatic brake control valve further includes a control port in fluid communication with the forward fluid coupling on the first towed member and configured to receive the first fluid control signal and the second electro-pneumatic brake control valve includes a control port in fluid communication with the forward fluid coupling on the first towed member and configured to receive the first fluid control signal.

5 . The system of claim 1 wherein the first electro-pneumatic brake control valve is configured to deliver fluid pressure from the fluid source to a first wheel brake on the first towed member responsive to the electronic control signal.

6 . The system of claim 5 wherein the first electro-pneumatic brake control valve delivers fluid pressure to the first wheel brake on the first towed member through a second delivery port on the first electro-pneumatic brake control valve.

7 . The system of claim 6 wherein the first delivery port on the first electro-pneumatic brake control valve is part of a first fluid channel and the second delivery port on the first electro-pneumatic brake control valve is part of a second fluid channel, different from the first fluid channel.

8 . The system of claim 7 wherein the first electro-pneumatic brake control valve is configured to deliver fluid pressure from the fluid source to a second wheel brake on the first towed member responsive to the electronic control signal through a third delivery port on the first electro-pneumatic brake control valve.

9 . The system of claim 8 wherein the third delivery port on the first electro-pneumatic brake control valve is part of the second fluid channel.

10 . The system of claim 6 wherein the first and second delivery ports on the first electro-pneumatic brake control valve are part of a first fluid channel.

11 . The system of claim 10 wherein the first electro-pneumatic brake control valve is configured to deliver fluid pressure from the fluid source to a second wheel brake on the first towed member responsive to the electronic control signal through a third delivery port on the first electro-pneumatic brake control valve, the third delivery port part of a second fluid channel.

12 . The system of claim 1 , further comprising a select low valve having a first supply port in fluid communication with the first delivery port on the first electro-pneumatic brake control valve and configured to receive a first fluid pressure, a second supply port in fluid communication with a second delivery port on the first electro-pneumatic brake control valve and configured to receive a second fluid pressure, and a delivery port in fluid communication with the second supply port of the double check valve and configured to output a lower of the first fluid pressure and the second fluid pressure.

13 . The system of claim 12 wherein the first electro-pneumatic brake control valve is configured to deliver fluid pressure from the fluid source to a first wheel brake on the first towed member through a third delivery port on the first electro-pneumatic brake control valve responsive to the electronic control signal.

14 . The system of claim 13 wherein the first and third delivery ports on the first electro-pneumatic brake control valve are part of a first fluid channel.

15 . The system of claim 14 wherein the first electro-pneumatic brake control valve is configured to deliver fluid pressure from the fluid source to a second wheel brake on the first towed member through a fourth delivery port on the first electro-pneumatic brake control valve responsive to the electronic control signal.

16 . The system of claim 15 wherein the second and fourth delivery ports on the first electro-pneumatic brake control valve are part of a second fluid channel, different from the first fluid channel.

Assignees

• Bendix Commercial Vehicle Systems Llc

Inventors

• Hurley Ryan S
• Ripley John V
• Salvatora Randy J

Classifications

• B60T13/683

  in pneumatic systems or parts thereof (in vacuum systems B60T13/72) · CPC title

• B60T7/20

  specially for trailers, e.g. in case of uncoupling of {or overrunning by} trailer (inertia-actuated overrun brakes B60T13/08) · CPC title

• B60T13/665 Primary

  the systems being specially adapted for transferring two or more command signals, e.g. railway systems (B60T13/662 takes precedence) · CPC title