Circuit configuration for improving the driving behavior of an automotive vehicle tending to oversteering

• US 5,302,010 A
• Filed: 06/24/1993
• Issued: 04/12/1994
• Est. Priority Date: 06/09/1990
• Status: Expired due to Term

• Current Assignee: Alfred Teves GmbH (ITT Automotive GmbH)
• Original Assignee: Alfred Teves GmbH (ITT Automotive GmbH)
• Inventors: Buettner, Hans-Joachim, Ehmer, Norbert, Striegel, Thomas
• Primary Examiner(s): Kashnikow, Andres
• Assistant Examiner(s): Young, Lee W.
• Application Number:
  US08/081,836
• Time in Patent Office: 292 Days
• Field of Search: 303/93, 303/94, 303/100, 303/103, 303/107, 303/108, 303/110, 303/111, 364/426.02
• US Class Current: 303/147
• CPC Class Codes: B60T 2201/16 Curve braking control, e.g. turn control within ABS control algorithm
• 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 circuit configuration for improving the driving behavior of an automotive vehicle tending to oversteering, which vehicle is equipped with an anti-lock control system, causes the slip and deceleration thresholds, decisive for the onset of control at the front wheel on the outside of the bend, to be raised upon the occurrence of a cornering identification signal.

Claims

1. Apparatus for improving the driving behavior of an automotive vehicle tending to oversteering, said automotive vehicle having an outer front wheel during cornering, an inner front wheel during cornering, rear wheels, means for developing wheel signals representative of the rotational behavior of said front wheels, and anti-lock control system, and a yaw moment limitation circuit, said apparatus comprising:

means responsive to said wheel signals for developing;

(a) from said wheel signals cornering identification signals representative of said automotive vehicle undergoing cornering maneuvers,

(b) at least one slip threshold signals and deceleration threshold signals representative of a slip threshold and a deceleration threshold of the outer front wheel during cornering, respectively, and

(c) anti-lock signals representative of anti-lock control applied to one of said front wheels;

means responsive to said cornering identification signals and said anti-lock signals for disabling said yaw moment limitation circuit when said automotive vehicle undergoes cornering maneuvers;

and means responsive to said wheel signals and said cornering identification signals for modifying at least one of said slip threshold signals and said deceleration threshold signals to raise said slip threshold and said deceleration threshold, respectively, by a predetermined amount for a predetermined duration upon the occurrence of said automotive vehicle undergoing a cornering maneuver.

2. Apparatus according to claim 1 wherein the rise in said at least one of said slip threshold and said deceleration threshold fades linearly within a predetermined period of 400-2000 msec.

3. Apparatus according to claim 2 wherein said predetermined period is 500-800 msec.