METHOD AND APPARATUS FOR DISTRIBUTING BRAKE TORQUE IN A MOTOR VEHICLE

• US 20070013228A1
• Filed: 02/28/2005
• Published: 01/18/2007
• Est. Priority Date: 08/30/2002
• Status: Abandoned Application

• Current Assignee: Volvo Lastvagnar AB (AB Volvo)
• Original Assignee: Volvo Lastvagnar AB (AB Volvo)
• Inventors: LINGMAN, Peter
• Application Number:
  US10/906,653
• Publication Number:
  US 20070013228A1
• Time in Patent Office: Days
• US Class Current: 303/9.620
• CPC Class Codes: B60T 10/00 Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
• CPC Class Codes: B60T 13/585 comprising friction brakes and retarders
• 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

Abstract

Method and apparatus for distributing brake torque between at least a first and a second brake system of a motor vehicle including at least two wheel axles and four wheels with tires, in which the first brake system acts on at least one wheel axle and in which the second brake system acts on at least one driven wheel axle and in which the distribution of brake torque between the first and the second brake system takes account of the wear of the tires and the constituent components of the brake systems.

Claims

1. A method for distributing brake torque between at least a first and a second brake system of a motor vehicle comprising at least two pairs of wheels with tires, in which the first brake system acts on at least one pair of wheels and in which the second brake system acts on at least one pair of driven wheels and the distribution of brake torque between the first and the second brake system takes account of the wear of the tires and the constituent components of the brake systems.

2. The method as recited in claim 1, wherein servicing costs for the tires are taken into account and the constituent components of the brake systems.

3. The method as recited in claim 1, wherein service life of the tires and the constituent components of the brake systems.

4. The method as in claim 1, wherein the wear of the tires and the constituent components of the brake systems is minimized.

5. The method as in claim 1, wherein the servicing cost for the tires and the constituent components of the brake systems is minimized.

6. The method as in claim 1, wherein the first brake system is a service brake and the second brake system is an auxiliary brake.

7. The method as in claim 1, wherein the input parameter for the method is chosen from the group comprising:

vehicle speed, vehicle acceleration, required brake torque, instantaneous brake torque, instantaneous retarder torque, vehicle weight, axle load, road gradient, retarder temperature, coolant temperature, temperature of the brake linings/brake disk/brake drum, ambient temperature, vehicle position.

8. The method as recited in claim 1, wherein when a certain brake torque is required the auxiliary brake torque and the service brake torque are determined by comparing each brake torque with a predefined limit value for the maximum permitted wear of the tires and the brake linings and brake disks/brake drums whilst delivering the total brake torque required.

9. An apparatus for distributing brake torque between at least a first and a second brake system of a motor vehicle comprising at least two pairs of wheels with tires, in which the first brake system acts on at least one pair of wheels and in which the second brake system acts on at least one pair of driven wheels and the apparatus distributes the brake torque between the first and the second brake system so that the wear of the tires and the constituent components of the brake systems is minimized.

10. The apparatus as recited in claim 9, wherein the apparatus distributes the brake torque between the first and the second brake system so that servicing cost for the tires and the constituent components of the brake systems is minimized.

11. The apparatus as recited in claim 9, wherein the first brake system is a service brake and the second brake system is an auxiliary brake.

12. A computer program comprising program code for performing a method for distributing brake torque between at least a first and a second brake system of a motor vehicle comprising at least two pairs of wheels with tires, in which the first brake system acts on at least one pair of wheels and in which the second brake system acts on at least one pair of driven wheels and the distribution of brake torque between the first and the second brake system takes account of the wear of the tires and the constituent components of the brake systems.

13. Computer program product comprising program code stored on a computer-readable medium for performing a method for distributing brake torque between at least a first and a second brake system of a motor vehicle comprising at least two pairs of wheels with tires, in which the first brake system acts on at least one pair of wheels and in which the second brake system acts on at least one pair of driven wheels and the distribution of brake torque between the first and the second brake system takes account of the wear of the tires and the constituent components of the brake systems.