Electronic brake system having a friction brake comprising friction linings for at least one wheel brake, and having at least one electronic control device

• US 8,676,462 B2
• Filed: 06/18/2010
• Issued: 03/18/2014
• Est. Priority Date: 06/23/2009
• Status: Active Grant

• Current Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Original Assignee: Continental Teves AG & Company HG (Continental AG)
• Inventors: Wiens, Eduard, Bauer, Oleg, Puff, Rdiger
• Primary Examiner(s): Tran, Khoi
• Assistant Examiner(s): NGUYEN, ROBERT T
• Application Number:
  US13/378,195
• Publication Number:
  US 20120130614A1
• Time in Patent Office: 1,369 Days
• Field of Search: 701/70, 303/191, 188/1.11 E, 188/1.11 R
• US Class Current: 701/70
• CPC Class Codes: B60T 17/221 Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M
• CPC Class Codes: B60T 7/12 for automatic initiation; for initiation not subject to will of driver or passenger limiting speed of vehicles other than rail vehicles B60K31/00
• CPC Class Codes: B60T 8/00 Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force by changing number of effective brake cylinders in power brake systems B60T17/10
• CPC Class Codes: B60T 8/885 using electrical circuitry
• CPC Class Codes: F16D 65/0037 Devices for conditioning friction surfaces, e.g. cleaning or abrasive elements

Abstract

The invention relates to a device and an operating method for an electronically controlled braking system having a friction brake, including friction linings for at least one wheel brake and having at least one electronic control device ESP+EPB−ECU. The aim of the invention is to provide an improved seat grinding device and an improved seat grinding process. The aim is achieved by proposing that an automated, electronically controlled or regulated routine is provided for seat grinding the friction partners of the friction brake, such that the automated seat grinding routine is fully executed after a release, particularly after entering a release code or after electronically connecting an interface of the electronic control device ESP+ESC−ECU of the braking system to a separate control device EST, and the results data of the seat grinding routine are stored in a memory area of the electronic control device ESP+ESC−ECU.

Claims

1. An electronic brake system having a friction brake comprising:

friction linings for at least one wheel brake;

at least one electronic control device (ECU); and

at least one automated activation integrated electronic means (ESP+EPB−

ECU) for performing a bedding in routine for bedding in friction partners of the friction brake,

wherein the bedding in routine has a plurality of phases, specifically a learning phase for detecting a first engagement point (Mp) of the friction partners, and a chronologically adjoining bedding in phase for bedding in the friction partners, wherein the first engagement point (Mp) of the friction partners is detected or learned automatically by the automated activation integrated electronic means by measuring a rise in current, increased in a ramp-like fashion, of an electromechanically driven actuator (AC) or by blocking the actuator (AC), and wherein a brake application force which is increased in a pulse-like fashion is provided during the subsequent bedding in phase.

2. The electronic brake system of claim 1, wherein the brake system has a separate, electronically controlled bedding in routine, and the bedding in routine detects bedding in parameters including at least one of a brake application force, a wheel speed, and a wheel torque, in an at least partially automated fashion during the bedding in routine.

3. The electronic brake system of claim 1, wherein a brake system which is mounted completely on the motor vehicle is provided as a device for an electronically open-loop or closed-loop controlled bedding in routine, and wherein the bedding in routine predefines at least one indirectly or directly predefined bedding in parameter selected from the group consisting of a brake application force, a predefined friction torque, and a profile of bedding in parameters (I,W,S), as a function of the time (t).

4. The electronic brake system of claim 2, wherein automatic monitoring of a time period (t) of the bedding in routine is provided, and wherein the time period (t) can be predefined.

5. The electronic brake system of claim 1, further comprising actuation means for activating the bedding in routine.

6. The electronic brake system of claim 1, wherein the control device (ESP+ESC−

ECU) has a storage area, and wherein result data from the bedding in routine are stored in the storage area.

7. The electronic brake system of claim 1, wherein the control device (ESP+ESC−

ECU) has a display device or an interface with a display device, and a result of a bedding in routine can be displayed visually.

8. The electronic brake system of claim 1, wherein the brake system has at least one electrically externally actuable actuator (AC) for generating an electronically controlled brake application force.

9. The electronic brake system of claim 8, wherein the at least one electrically externally actuable actuator (AC) is an electrically actuated pump for a hydraulic wheel brake, or an electromechanical actuator (AC) selected from the group consisting of a combined electromechanically actuable wheel brake, an electromechanical Bowden cable device, an electromechanically actuable Duo-Servo wheel brake, and an externally actuable brake booster.

10. The electronic brake system of claim 8, wherein the control device (ESP+ESC−

ECU) is electrically connected to sensors and/or measuring circuits selected from the group consisting of at least one current sensor, at least one travel sensor, at least one wheel rotation sensor (s/u), at least one force sensor and at least one pressure sensor (p/u), in order to detect operating states of the wheel brake and/or of the electromechanical actuator (AC).

11. The electronic brake system of claim 5, further comprising an electronic control device (EST) for connection to the automated activation integrated electronic means (ESP+EPB−

ECU), wherein the electronic control device (EST) has the actuation means for activating the bedding in routine.

12. An operating method for operating an electronic brake system as claimed in claim 1, comprising the steps of:

performing an automated, electronically open-loop controlled or electronically closed-loop controlled routine for bedding in friction partners of the friction brake with the automated activation integrated electronic means (ESP+EPB−

ECU), wherein the automated bedding in routine is started and processed automatically after an input of an enable code, or after electronic connection of an interface of the electronic means (ESP+ESC−

ECU) of the brake system to a separate control device (EST), and

storing result data of the bedding in routine in a storage area of the electronic means (ESP+ESC−

ECU).

13. The operating method of claim 12, wherein the bedding in routine is provided as a separate component of a method for activating an electromechanical actuator (AC), which method is stored in the control device (ESP+ESC−

ECU) of the brake system.

14. The operating method automated activation integrated electronic means of claim 12, further comprising the steps of:

carrying out measuring processes during the bedding in routine,

passing measurement data of the measuring processes on to the automated activation integrated electronic means (ESP+ESC−

ECU), and

electronically processing the measurement data with the automated activation integrated electronic means (ESP+ESC−

ECU).

15. The operating method of claim 12, wherein the brake application force is repeatedly increased and decreased in a pulse-like fashion during the bedding in phase (B1,B2,B3).

16. The operating method of claim 12, wherein a successfully concluded bedding in routine or a bedding in routine which is not successfully concluded is reported.

17. The operating method of claim 12, wherein following activation of the bedding in routine, at least one operating function of the brake system, which contributes during the driving mode to ensuring driving stability, is deactivated automatically, and the operating function is automatically reactivated when the bedding in routine is concluded.