Method for operating a motor vehicle with driving-stabilizing brake interventions

• US 6,086,168 A
• Filed: 08/15/1997
• Issued: 07/11/2000
• Est. Priority Date: 08/16/1996
• Status: Expired due to Term

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Inventors: Rump, Siegfried
• Primary Examiner(s): Butler, Douglas C.
• Application Number:
  US08/911,748
• Time in Patent Office: 1,061 Days
• Field of Search: 303/146, 303/189, 303/190, 303/192, 303/137, 303/140, 303/121, 303/191, 318/586, 318/587, 701/70, 701/82, 701/83, 701/72, 702/148, 702/150
• US Class Current: 303/191
• CPC Class Codes: B60T 2210/16 Off-road driving conditions
• CPC Class Codes: B60T 2230/02 Side slip angle, attitude angle, floating angle, drift angle
• CPC Class Codes: B60T 2230/03 Overturn, rollover
• CPC Class Codes: B60T 8/17552 responsive to the tire sideslip angle or the vehicle body slip angle
• 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

Abstract

A method operates a motor vehicle such as an off-road vehicle with a brake system in which wheels on the same axle can be braked independently of one another. Vehicle-movement-stabilizing braking interventions are performed automatically by the brake system. For at least one vehicle-movement dynamics characteristic variable which is indicative of the tendency of the vehicle to tilt about the longitudinal axis of the vehicle, an associated tilting-prevention threshold value is prescribed. The respective characteristic-variable instantaneous value is continuously acquired and compared with the tilting-prevention threshold value. The wheels which are on the outside during cornering are, for the purpose of preventing tilting, braked as soon as an associated characteristic-variable instantaneous value exceeds the associated tilting-prevention threshold value.

Claims

1. Method for operating a motor vehicle with at least one axle and two wheels thereon and with a brake system for braking different wheels on the axle independently of one another, comprising the steps of

automatically carrying out vehicle movement-stabilizing braking interventions with the brake system,

prescribing an associated tilting-prevention threshold value for at least one vehicle-movement dynamics characteristic variable representative of a tendency of the vehicle to tilt about a vehicle longitudinal axis, continuously acquiring a respective characteristic-variable instantaneous value, comparing the instantaneous value with the threshold value, and

braking the wheel which are outside during vehicle cornering for preventing tilting about the vehicle longitudinal axis as soon as the instantaneous value exceeds the threshold value.

2. The method according to claim 1, wherein the at least one characteristic value comprises one or more of lateral acceleration, change over time of the lateral acceleration, attitude angle, attitude-angle velocity, change over time of the attitude-angle velocity and the slip angle.