IP Library › Granted Patent US 6,904,991
Granted Patent B2
US 6,904,991 · App. 10/626,678 · Granted Jun 14, 2005

Method and device for stabilizing a vehicle

Assignee: Robert Bosch GmbH
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Quick Facts
Patent No.
US 6,904,991
App. No.
10/626,678
Granted
Jun 14, 2005
Kind
B2
Abstract

A method and a device for stabilizing a vehicle having at least one wheel tending to spin, are provided. In response to the tendency to spin, a driver-independent braking intervention occurs in the at least one wheel. The engine torque is reduced if the driver-independent braking intervention has not resulted in stabilizing the vehicle.

Claims (24)

1. A method for stabilizing a vehicle having an engine and a plurality of wheels, in response to at least one wheel tending to spin, comprising:

activating a driver-independent braking intervention in the at least one wheel tending to spin; and

if the driver-independent braking intervention does not result in stabilization of the vehicle, activating a reduction of the engine torque;

wherein the braking intervention occurs with equal intensity at both wheels of a first driven axle of the vehicle.

2. The method according to claim 1 , wherein the vehicle is an all-wheel drive vehicle, and wherein during the braking intervention involving the first driven axle, no braking intervention occurs at wheels of a second driven axle.

3. The method according to claim 1 , wherein the engine torque is reduced if the difference between a variable determined from wheel rotational speeds of braked wheels and a setpoint value for the variable exceeds a specified first threshold value that is not equal to zero.

4. The method according to claim 3 , further comprising:

ending the reduction in engine torque if the difference between the variable determined from the wheel rotational speeds of the braked wheels and a setpoint value for the variable falls below a specified second threshold value that is not equal to zero.

5. The method according to claim 4 , wherein the second threshold value is lower than the first threshold value.

6. The method according to claim 4 , wherein the variable determined from the wheel rotational speeds of the braked wheels is an actual value of a cardan shaft speed, and the setpoint value for the variable is a setpoint cardan shaft speed.

7. The method according to claim 4 , wherein the variable determined from the wheel rotational speeds of the braked wheels is a mean value of wheel speeds of the braked wheels.

8. The method according to claim 1 , wherein a differential lock function is used in a longitudinal direction.

9. A device for stabilizing a vehicle having an engine and a plurality of wheels, in response to at least one wheel tending to spin, comprising:

a reducing means for reducing the engine torque; and

a braking means for carrying out a driver-independent braking intervention;

wherein the driver-independent braking intervention occurs in the at least one wheel tending to spin, and wherein the engine torque is reduced only if the driver-independent braking intervention does not result in stabilization of the vehicle; and

wherein the braking intervention occurs with equal intensity at both wheels of a first driven axle of the vehicle.

10. The device according to claim 9 , wherein the vehicle is an all-wheel drive vehicle, and wherein during the braking intervention involving the first driven axle, no braking intervention occurs at wheels of a second driven axle.

11. The device according to claim 9 , wherein the engine torque is reduced if the difference between a variable determined from wheel rotational speeds of braked wheels and a setpoint value for the variable exceeds a specified first threshold value that is not equal to zero.

12. The device according to claim 11 , further comprising means for ending the reduction in engine torque if the difference between the variable determined from the wheel rotational speeds of the braked wheels and a setpoint value for the variable falls below a specified second threshold value that is not equal to zero.

13. The device according to claim 12 , wherein the second threshold value is lower than the first threshold value.

14. The device according to claim 12 , wherein the variable determined from the wheel rotational speeds of the braked wheels is an actual value of a cardan shaft speed, and the setpoint value for the variable is a setpoint cardan shaft speed.

15. The device according to claim 12 , wherein the variable determined from the wheel rotational speeds of the braked wheels is a mean value of wheel speeds of the braked wheels.

16. The device according to claim 9 , wherein a differential lock function is used in a longitudinal direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 18, 2004
From: BARTH, GUENTER; LEIBELING, FRANK; KROEHNERT, MICHAEL
To: ROBERT BOSCH GMBH
Reel/Frame 015471/0102 →
Priority Claims (1)
DE 102 34 606 · Jul 30, 2002 · national
Continuity (1)
Related Publication 20040222027A1 · Nov 11, 2004