Electronic control air management with parking brake and trailer supply control

• US 7,784,879 B2
• Filed: 07/16/2002
• Issued: 08/31/2010
• Est. Priority Date: 07/16/2002
• Status: Active Grant

• Current Assignee: Haldex Brake Corporation
• Original Assignee: Haldex Brake Corporation
• Inventors: Koelzer, Robert L.
• Primary Examiner(s): King; Bradley T
• Application Number:
  US10/195,983
• Publication Number:
  US 20040012249A1
• Time in Patent Office: 2,968 Days
• Field of Search: 303/3, 303/6.01, 303/7, 303/15, 303/9.76, 303/20
• US Class Current: 303/3
• CPC Class Codes: B60G 17/0523 Regulating distributors or valves for pneumatic springs
• CPC Class Codes: B60T 13/66 Electrical control in fluid-pressure brake systems
• CPC Class Codes: B60T 17/02 Arrangements of pumps or compressors, or control devices therefor
• CPC Class Codes: B60T 8/323 Systems specially adapted for tractor-trailer combinations

Abstract

A brake system assembly for a motor vehicle is provided comprising an air compressor operably engaged to the motor vehicle engine; a compressed air control device; at least one supply circuit for retaining compressed air in fluid communication with the compressed air control device; a service brake operably engaged by the application of compressed air; a parking brake operably disengaged by the application of compressed air; a dash control assembly having a parking brake control; a plurality of functional conduits for fluid communication; and a plurality of valves for manipulating compressed air including a foot brake valve for selectively engaging the brake system.

Claims

1. An electronic control system for a motor vehicle brake system comprising a charge system, a primary supply circuit, a secondary supply circuit, a tractor parking/emergency supply circuit and a trailer parking/emergency supply circuit, the electronic control system comprising:

a housing having an input port in communication with the charge system, a first exhaust port in communication with the primary supply circuit, a second exhaust port in communication with the secondary supply circuit, a third exhaust port in communication with the tractor parking/emergency supply circuit and a fourth exhaust port in communication with the trailer parking/emergency supply circuit;

a first solenoid disposed within said housing, said first solenoid selectively allowing communication between the charge system and the primary supply circuit via the input port and the first exhaust port in response to first electrical signals;

a second solenoid disposed within said housing, said second solenoid selectively allowing communication between the charge system and the secondary supply circuit via the input port and the second exhaust port in response to second electrical signals;

a third solenoid disposed within said housing, said third solenoid selectively allowing communication between the charge system and the tractor parking/emergency supply circuit via the input port and the third exhaust port in response to third electrical signals;

a fourth solenoid disposed within said housing, said fourth solenoid selectively allowing communication between the charge system and the trailer parking/emergency supply circuit via the input port and the fourth exhaust port in response to fourth electrical signals;

an electronic control unit in communication with said first solenoid, said second solenoid, said third solenoid and said fourth solenoid;

a dash control assembly disposed on a dash of the motor vehicle, said dash control assembly in electrical communication with said electronic control unit via electrical cabling; and

wherein electrical control signals are generated by said dash control assembly in response to an operator'"'"'s manipulation of said dash control assembly, are communicated to said electronic control unit via the electrical cabling, and are used by the electronic control unit to generate the third electrical signals and the fourth electrical signals to control operation of said third solenoid and said fourth solenoid.

2. The electronic control system of claim 1 further comprising a first sensor operably connected for communicating a fluid pressure reading of the primary supply circuit to said electronic control unit.

3. The electronic control system of claim 2 wherein said electronic control unit utilizes the fluid pressure reading received from the first sensor to generate the first control signals to control operation of said first solenoid.

4. The electronic control system of claim 1 further comprising a second sensor operably connected for communicating a fluid pressure reading of the secondary supply circuit to said electronic control unit.

5. The electronic control system of claim 4 wherein said electronic control unit utilizes the fluid pressure reading received from the second sensor to generate the second electrical signals to control operation of said second solenoid.

6. The electronic control system of claim 1 wherein said electronic control unit attaches a unique identifier to each of the first electrical signals, the second electrical signals, the third electrical signals and the fourth electrical signals communicated to said first solenoid, said second solenoid, said third solenoid and said fourth solenoid, the unique identifier controlling a destination of each electrical signal.

7. The electronic control system of claim 1 wherein the primary supply circuit supplies pneumatic power to at least one of the following:

a service brake, a spring brake, a trailer supply, an anti-lock braking subsystem, a traction control subsystem and a fluid suspension subsystem.

8. The electronic control system of claim 1 further comprising a foot brake control disposed within said primary supply circuit for controlling actuation of at least one service brake.

9. The electronic control system of claim 8 further comprising a foot brake control disposed within said secondary supply circuit for controlling actuation of at least one service brake.

10. The electronic control system of claim 9 wherein the foot brake control disposed within said primary supply circuit and the foot brake control disposed within said secondary supply circuit comprise the same foot brake control.