Device for adjusting the height positioning of the body of a vehicle

• US 6,477,466 B1
• Filed: 03/12/2001
• Issued: 11/05/2002
• Est. Priority Date: 09/11/1998
• Status: Expired due to Term

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Kocherscheidt, Hans, Eiletz, Richard
• Primary Examiner(s): LOUIS JACQUES, JACQUES H
• Application Number:
  US09/787,013
• Time in Patent Office: 603 Days
• Field of Search: 701/301, 701/36, 701/37, 701/1, 701/38, 701/45, 701/48, 701/300, 701/302, 280/5.5, 280/5.501, 280/5.502, 280/5.507, 280/5.514, 280/5.517, 280/5.518
• US Class Current: 701/301
• CPC Class Codes: B60G 17/0164 mainly during accelerating or braking
• CPC Class Codes: B60G 17/0185 for failure detection
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 2400/823 Obstacle sensing
• CPC Class Codes: B60G 2401/142 Visual Display Camera, e.g. LCD
• CPC Class Codes: B60G 2401/16 GPS track data
• CPC Class Codes: B60G 2800/222 during collision
• CPC Class Codes: B60G 2800/70 Estimating or calculating vehicle parameters or state variables
• CPC Class Codes: B60G 2800/912 Attitude Control; levelling control
• CPC Class Codes: B60G 2800/914 Height Control System

Abstract

A method and apparatus for controlling the elevation of a vehicle body in the event of a collision includes devices for sensing information concerning objects approaching the vehicle. Sensed information may include, for example, the relative speed, distance and contour of the approaching object. Based on this information, a control unit determines whether a collision is likely. If so, the point of impact, as well as an optimal vehicle height for the collision are determined based on the sensed information, such that the impact between the object and the vehicle occurs in a portion of the vehicle which has greater reinforcement.

Claims

1. A level control system for adjusting elevation of a vehicle body to ensure in case of a collision, an impact in a well reinforced region of the vehicle, said level control system comprising:

a detection device for generating data of an object approaching the vehicle;

an electronic processing device; and

actuators for adjusting the vehicle body level;

wherein

the processing device determines at least from said data a likelihood of a possible collision, as well as a probable point of impact and level of impact; and

said control unit emits signals to the actuators to adjust the elevation of the vehicle body in the collision area to a height such that an impact occurs at a desired optimal collision point.

2. The level control system according to claim 1, wherein the detection device comprises at least one of a sensor system and a picture producing device which supply signals indicative of at least one of relative speed, distance and contour of an approaching object.

3. The level control system according to claim 2, wherein said defined time is 0.5 seconds.

4. The level control system according to claim 1, further comprising an energy accumulator which supplies energy to the actuators to bring the vehicle to the desired level within a defined time.

5. The level control system according to claim 1, wherein the processing device causes adjustment of the vehicle body elevation only on a collision side of the vehicle.

6. A process for controlling elevation of a vehicle body of a vehicle having areas of greater reinforcement and areas of lesser reinforcement;

said process comprising;

sensing information concerning objects which approach said vehicle;

based on sensed information, determining likelihood of a collision of said object and said vehicle;

upon determination of an imminent collision, based on said sensed information determining a probable point of impact and level of impact; and

based on said determined point and level of impact, adjusting elevation of said vehicle body to a height such that said impact occurs in an area of said vehicle body having greater reinforcement.

7. A process according to claim 6, wherein said sensed information comprises at least one of relative speed, distance and contour of an approaching object.

8. The process according to claim 6, wherein said adjustment of elevation of the vehicle body is performed only on a side of the vehicle at which said impact is to occur.