Method for stabilizing a motor vehicle, in particular a two-wheeled motor vehicle

• US 8,813,898 B2
• Filed: 01/08/2010
• Issued: 08/26/2014
• Est. Priority Date: 03/03/2009
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Wagner, Marcus
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): SPISICH, GEORGE D
• Application Number:
  US13/138,430
• Publication Number:
  US 20120031696A1
• Time in Patent Office: 1,691 Days
• Field of Search: 180/218, 180/219, 180282-285, 280/124.105, 280/755, 280/124.104, 280/5.513, 701/70, 701/72, 701/76, 701 78- 80, 303146-148
• US Class Current: 180/282
• CPC Class Codes: B60T 2230/03 Overturn, rollover
• CPC Class Codes: B60T 8/1706 for single-track vehicles, e.g. motorcycles
• CPC Class Codes: B60T 8/1755 Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve road vehicle drive control systems for control of driving stability otherwise than by controlling a particular sub-unit B60W30/02

Abstract

A method for stabilizing a two-wheeled motor vehicle includes determining a current pitch angle of the motor vehicle, and limiting the pitch angle to a specified boundary pitch angle by an intervention using an intervention component of the motor vehicle causing the longitudinal acceleration of the motor vehicle to be influenced.

Claims

1. A method for stabilizing a two-wheeled motor vehicle, comprising:

determining a current pitch angle of the motor vehicle; and

limiting the pitch angle to a specified boundary pitch angle by an intervention using an intervention component of the motor vehicle causing the longitudinal acceleration of the motor vehicle to be influenced;

wherein;

the current pitch angle is determined by integrating a measured pitch rate; and

the boundary pitch angle is determined during running operation of the motor vehicle as a function of one of a state of the motor vehicle and an operating variable of the motor vehicle.

2. The method as recited in claim 1, wherein the intervention component is a braking system of the motor vehicle, the braking system being actuated for limiting the pitch angle.

3. The method as recited in claim 1, wherein the intervention component is an engine of the motor vehicle, the engine torque of the motor vehicle being throttled for limiting the pitch angle.

4. The method as recited in claim 1, wherein the boundary pitch angle is a function of one of a longitudinal or a lateral dynamic state variable, the boundary pitch angle being reduced with an increase in the one of the longitudinal or lateral dynamic state variable.

5. The method as recited in claim 4, wherein the lateral dynamic state variable includes at least one of a roll angle, a transverse acceleration, and a yaw rate.

6. The method as recited in claim 4, wherein the longitudinal dynamic state variable includes a vehicle speed.

7. The method as recited in claim 4, wherein the boundary pitch angle is limited to a specified maximum value.

8. The method as recited in claim 4, further comprising:

performing a plausibility check for each measured value by comparing the measured value to a comparison value.

9. The method as recited in claim 8, further comprising:

determining a comparison pitch angle from at least one additional state variable of the motor vehicle.

10. The method as recited in claim 9, wherein the comparison pitch angle is determined from a longitudinal acceleration of the motor vehicle.

11. The method as recited in claim 10, wherein in the case of a deviation between the current pitch angle and the comparison pitch angle, the larger pitch angle value is used.

12. The method as recited in claim 8, wherein the measured values of rotational speed sensors at front and rear wheels of the motor vehicle are checked for plausibility by using the measured values of a longitudinal acceleration sensor.

13. A control unit for stabilizing a two-wheeled motor vehicle, comprising:

means for determining a current pitch angle of the motor vehicle; and

means for limiting the pitch angle to a specified boundary pitch angle by an intervention using an intervention component of the motor vehicle causing the longitudinal acceleration of the motor vehicle to be influenced;

wherein;

the current pitch angle is determined by integrating a measured pitch rate; and

the boundary pitch angle is determined during running operation of the motor vehicle as a function of one of a state of the motor vehicle and an operating variable of the motor vehicle.