Motor vehicle with a safety system with a preventive action

• US 20090150028A1
• Filed: 07/29/2005
• Published: 06/11/2009
• Est. Priority Date: 08/03/2004
• Status: Abandoned Application

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Inventors: Bernzen, Werner, Reutter, Dominic, Wagner, Alfred
• Application Number:
  US11/659,090
• Publication Number:
  US 20090150028A1
• Time in Patent Office: Days
• US Class Current: 701/45
• CPC Class Codes: B60R 2021/01272 Belt tensioners
• CPC Class Codes: B60R 2021/01313 monitoring the vehicle steering system or the dynamic control system
• CPC Class Codes: B60R 2021/01315 monitoring occupant displacement
• CPC Class Codes: B60R 2021/01322 comprising variable thresholds, e.g. depending from other collision parameters
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value

Abstract

In a motor vehicle, such as a passenger car, a preventive-action protection system is provided which includes safety devices that are actuated as a function of information detected by a driving-state sensor system and evaluated in a data evaluation and control device, which compares the detected information with at least one threshold value. When a critical condition of the driving state is detected, the data evaluation and control device actuates at least one safety device assigned to this driving state. Here, a theoretical, lateral-dynamics critical condition is detected and triggering of at least one assigned safety device occurs if a threshold value is exceeded when a current steering angle speed is logically combined with a parameter which represents the current driving-dynamics situation.

Claims

1-11. -11. (canceled)

12. In a motor vehicle, a preventive-action protection system comprising:

a driving state sensor system;

safety devices which are actuated as a function of information detected by the driving state sensor system; and

a data evaluation and control device configured to compare the detected information with at least one threshold value and, when a critical condition of a driving state is detected, actuate at least one safety device assigned to the driving state,

wherein a theoretical, lateral-dynamics critical condition is detected and the at least one assigned safety device is triggered, if a predefined threshold value is exceeded when a current steering angle speed is logically combined with a current driving-dynamics parameter.

13. The preventive-action protection system as claimed in claim 12, wherein the current driving-dynamics parameter is a yaw rate or yaw acceleration.

14. The preventive-action protection system as claimed in claim 13, wherein the theoretical lateral-dynamics critical condition is detected if a product of the current steering angle speed and the yaw acceleration is greater than the predefined threshold value.

15. The preventive-action protection system as claimed in claim 12, wherein the current driving-dynamics parameter is an Ackermann lateral acceleration.

16. The preventive-action protection system as claimed in claim 15, wherein a theoretical lateral-dynamics critical condition is detected if a product of the steering angle speed and the Ackermann lateral acceleration is greater than the predefined threshold value.

17. The preventive-action protection system as claimed in claim 12, wherein the predefined threshold value is a function of a vehicle velocity or a gradient of the vehicle velocity.

18. The preventive-action protection system as claimed in claim 12, wherein the predefined threshold value is a function of a coefficient friction of the roadway.

19. The preventive-action protection system as claimed in claim 12, wherein the at least one assigned safety device is actuated as a function of determined physiological variables, including a weight or a body size of a vehicle occupant.

20. The preventive-action protection system as claimed in claim 12, wherein the at least one assigned safety device is actuated as a function of a position of a vehicle occupant.

21. The preventive-action protection system as claimed in claim 12, wherein the at least one assigned safety device is a reversible seatbelt pretensioner.

22. The preventive protection system as claimed in claim 12, wherein the at least one assigned safety device is a movable restraining upholstered element.

23. The preventive-action protection system as claimed in claim 13, wherein the predefined threshold value is a function of a vehicle velocity or a gradient of the vehicle velocity.

24. The preventive-action protection system as claimed in claim 13, wherein the predefined threshold value is a function of a coefficient friction of the roadway.

25. The preventive-action protection system as claimed in claim 13, wherein the at least one assigned safety device is actuated as a function of determined physiological variables, including a weight or a body size of a vehicle occupant.

26. The preventive-action protection system as claimed in claim 13, wherein the at least one assigned safety device is actuated as a function of a position of a vehicle occupant.

27. The preventive-action protection system as claimed in claim 13, wherein the at least one assigned safety device is a reversible seatbelt pretensioner.

28. The preventive protection system as claimed in claim 13, wherein the at least one assigned safety device is a movable restraining upholstered element.

29. The preventive-action protection system as claimed in claim 14, wherein the predefined threshold value is a function of a vehicle velocity or a gradient of the vehicle velocity.

30. The preventive-action protection system as claimed in claim 14, wherein the predefined threshold value is a function of a coefficient friction of the roadway.

31. A method for protecting occupants of a motor vehicle including a preventive-action protection system, comprising:

detecting information with a driving-state sensor system;

comparing the detected information with at least one threshold value to determine a driving state of the motor vehicle; and

actuating at least one safety device assigned to the driving state, if a critical condition of the driving state is detected;

wherein a theoretical, lateral-dynamics critical condition is detected and the at least one assigned safety device is triggered, if a predefined threshold value is exceeded when a current steering angle speed is logically combined with a current driving-dynamics parameter.