Method and Apparatus for Eliminating a Motor Vehicle Tip-Over Risk

• US 20080262686A1
• Filed: 07/04/2005
• Published: 10/23/2008
• Est. Priority Date: 08/19/2004
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Nimmo, Matthew, Nardi, Flavio, Samsons, Andris, Nenninger, Gerb, Kieren, Martin, Napolskich, Wadim
• Granted Patent: US 8,712,659 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60T 2220/03 Driver counter-steering; Avoidance of conflicts with ESP control
• CPC Class Codes: B60T 2230/03 Overturn, rollover
• CPC Class Codes: B60T 8/17554 specially adapted for enhancing stability around the vehicles longitudinal axle, i.e. roll-over prevention road vehicle drive control systems for roll-over prevention otherwise than by controlling a particular sub-unit B60W30/04
• CPC Class Codes: B60T 8/241 Lateral vehicle inclination
• CPC Class Codes: B60T 8/243 for roll-over protection
• CPC Class Codes: B60T 8/246 Change of direction
• CPC Class Codes: B60W 10/18 including control of braking systems

Abstract

The invention relates to a method for preventing tip-over of a motor vehicle in the lateral direction,

• • in which a finite number of predefined driving states is specified;
  • in which a determination is made as to which of the predefined driving states the vehicle is in instantaneously,
  • the predefined driving state thus determined being dependent on sensor signals and on that predefined driving state in which the vehicle was most recently; and
  • as a function of the predefined driving state instantaneously present, at least one braking intervention is carried out in order to prevent the tip-over.

Claims

1-8. -8. (canceled)

9. A method for preventing a tip-over of a motor vehicle in a lateral direction, comprising:

specifying a finite number of predefined driving states;

determining which of the predefined driving states the vehicle is in instantaneously, the determined, predefined driving state being dependent on sensor signals and on that predefined driving state in which the vehicle was most recently; and

performing, as a function of the predefined driving state instantaneously present, at least one braking intervention out in order to prevent the tip-over.

10. The method as recited in claim 9, wherein the sensor signals include sensor signals describing vehicle-dynamics variables.

11. The method as recited in claim 10, wherein the sensor signals correspond to at least one of a yaw rate, a transverse acceleration, a steering angle, and a wheel rotation speed.

12. The method as recited in claim 10, wherein the sensor signals correspond to an accelerator pedal position stipulated by a driver, and a brake pre-pressure stipulated by the driver.

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

in at least one of the predefined driving states, braking, in a cornering situation, a front wheel on an outside of a curve.

14. The method as recited in claim 9, wherein in at least one of the predefined driving states, a pre-filling of at least one wheel brake cylinder takes place, without an appreciable braking effect having yet been applied.

15. The method as recited in claim 9, wherein the predefined states are the states of a state machine.

16. An apparatus for preventing a tip-over of a motor vehicle in a lateral direction, comprising:

an arrangement for specifying a finite number of predefined driving states;

a sensor arrangement for sensing vehicle-dynamics variables;

a driving state determining arrangement for determining which of the predefined driving states the vehicle is in instantaneously, the predefined driving state thus determined being dependent on sensor signals determined with the sensor arrangement and on that predefined driving state in which the vehicle was most recently; and

a braking arrangement with which, as a function of the predefined driving state instantaneously present, at least one braking intervention is carried out in order to prevent the tip-over.

17. The apparatus as recited in claim 16, wherein the apparatus is part of a vehicle dynamics regulation system.