BRAKE MODULATOR AND METHOD OF PROCESSING BRAKE MODULATOR DURING VEHICLE ASSEMBLY

• US 20120199214A1
• Filed: 02/09/2011
• Published: 08/09/2012
• Est. Priority Date: 02/09/2011
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: MACK, Josef, SAPIENZA, Raymond J., COTTON, Brian D., AMATYAKUL, Phanu, SHAUB, Paul S., PICHLER, Frank J. Jr., CONLIN, Elizabeth A.
• Application Number:
  US13/024,024
• Publication Number:
  US 20120199214A1
• Time in Patent Office: Days
• US Class Current: 137/205
• CPC Class Codes: B60T 13/66 Electrical control in fluid-pressure brake systems
• CPC Class Codes: B60T 17/222 by filling or bleeding of hydraulic systems
• CPC Class Codes: B60T 8/34 having a fluid pressure regulator responsive to a speed condition
• CPC Class Codes: Y10T 137/3109 Liquid filling by evacuating container

Abstract

A brake modulator is disclosed herein. The brake modulator includes, but is not limited to an electronic-brake-control-modulator portion including a processor and a hydraulic portion associated with the electronic-brake-control-modulator portion. The hydraulic portion includes a primary circuit extending through the hydraulic portion to receive hydraulic brake fluid. The hydraulic portion also includes a secondary circuit extending within the hydraulic portion to receive the hydraulic brake fluid. The secondary circuit is in fluid communication with the primary circuit. The hydraulic portion further includes a valve between the primary circuit and the secondary circuit. The valve is electronically actuatable and controls movement of fluid between the primary circuit and the secondary circuit. The processor is operatively coupled to the valve and configured to perform an automatic cycling of the valve in response to an actuating event during assembly of the vehicle to evacuate the secondary circuit.

Claims

1. A brake modulator for use with a brake system on a vehicle, the brake modulator comprising:

an electronic-brake-control-modulator portion including a processor; and

a hydraulic portion associated with the electronic-brake-control-modulator portion, the hydraulic portion including a primary circuit extending through the hydraulic portion and configured to receive a hydraulic brake fluid, the hydraulic portion further including a secondary circuit extending within the hydraulic portion and configured to receive the hydraulic brake fluid, the secondary circuit being in fluid communication with the primary circuit, and the hydraulic portion still further including a valve disposed between the primary circuit and the secondary circuit, the valve configured to be electronically actuatable and to control movement of fluid between the primary circuit and the secondary circuit,

wherein the processor is operatively coupled to the valve and configured to perform an automatic cycling of the valve in response to an actuating event during assembly of the vehicle wherein the valve is cycled to permit evacuation of the secondary circuit.

2. The brake modulator of claim 1, wherein the processor is configured to hold the valve open during the automatic cycling for substantially an entire period of time that the brake system is being evacuated.

3. The brake modulator of claim 1, wherein the processor is configured to open and close the valve a plurality of times during the automatic cycling while the brake system is being evacuated.

4. The brake modulator of claim 1, wherein the processor is configured to hold the valve closed during the automatic cycling for substantially an entire period of time that the brake system is being filled with the hydraulic brake fluid.

5. The brake modulator of claim 1, wherein the processor is configured to hold the valve open during the automatic cycling for substantially an entire period of time that the brake system is being filled with the hydraulic brake fluid.

6. The brake modulator of claim 1, wherein the processor is configured to open and close the valve multiple times during the automatic cycling while the brake system is being filled with the hydraulic brake fluid.

7. The brake modulator of claim 1, wherein the processor is configured to restart the automatic cycling if the automatic cycling is interrupted prior to completion.

8. The brake modulator of claim 7, wherein the processor is configured to restart the automatic cycling if the automatic cycling is interrupted prior to a lapse of a predetermined period of time.

9. The brake modulator of claim 8, wherein the predetermined period of time corresponds to a length of time that the brake system is evacuated.

10. The brake modulator of claim 1, wherein the processor is configured to inhibit a second occurrence of the automatic cycling once the automatic cycling has been completed.

11. The brake modulator of claim 10, wherein the processor is configured to inhibit the second occurrence of the automatic cycling once the automatic cycling has progressed for a predetermined period of time.

12. The brake modulator of claim 11, wherein the predetermined period of time corresponds to a length of time that the brake system is evacuated.

13. The brake modulator of claim 1, wherein the actuating event comprises energizing the electronic brake control module.

14. The brake modulator of claim 13, wherein the actuating event further comprises transmitting an actuating signal to the electronic brake control module.

15. The brake modulator of claim 1, further comprising an electronic data storage unit operatively coupled to the processor, the electronic data storage unit configured to store electronic data, wherein the processor is configured to instruct the electronic data storage unit to store data relating to a progression of the automatic cycling.

16. The brake modulator of claim 15, wherein the processor is further configured to instruct the electronic data storage unit to store a first data file containing information indicative of a commencement of the automatic cycling when the automatic cycling commences.

17. The brake modulator of claim 16, wherein the processor is further configured to instruct the electronic data storage unit to store a second data file containing information indicative of the automatic cycling having continued for a predetermined period of time after the automatic cycling has continued in an uninterrupted fashion for the predetermined period of time.

18. The brake modulator of claim 16, wherein the processor is further configured to instruct the electronic data storage unit to store a third data file containing information indicative of the automatic cycling having been completed after the automatic cycling has been completed.

19. A method for processing a brake modulator during assembly of a vehicle, the method comprising the steps of:

providing the brake modulator;

connecting the brake modulator to a brake system of the vehicle;

actuating an electronic-brake-control-module portion of the brake modulator to begin an automatic cycling of a valve disposed between a primary circuit and a secondary circuit of a hydraulic portion of the brake modulator;

conducting the automatic cycling of the valve; and

evacuating the brake system, the primary circuit and the secondary circuit of the hydraulic portion of the brake modulator during the automatic cycling of the valve.

20. A method for processing a brake modulator during assembly of a vehicle, the method comprising the steps of:

providing the brake modulator;

connecting the brake modulator to a brake system of the vehicle;

energizing an electronic-brake-control-module portion of the brake modulator;

transmitting an actuating signal to the electronic-brake-control-module portion configured to actuate an automatic cycling of a valve disposed between a primary circuit and a secondary circuit of a hydraulic portion of the brake modulator;

conducting the automatic cycling of the valve;

evacuating the brake system, the primary circuit and the secondary circuit during the automatic cycling of the valve; and

filling the brake system, the primary circuit and the secondary circuit with the hydraulic brake fluid during the automatic cycling of the valve.