DEVICE OPERABLE TO CONTROL TURNING OF VEHICLE

• US 20090018741A1
• Filed: 03/19/2008
• Published: 01/15/2009
• Est. Priority Date: 07/09/2007
• Status: Active Grant

• Current Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
• Original Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
• Inventors: Matsui, Takao, Takahashi, Naoki, Suzuki, Keiji, Sawase, Kaoru, Ushiroda, Yuichi, MIURA, Takami
• Granted Patent: US 7,761,215 B2
• Time in Patent Office: Days
• US Class Current: 701/72
• CPC Class Codes: B60T 2201/14 Electronic locking-differential
• 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
• CPC Class Codes: B60T 8/24 responsive to vehicle inclination or change of direction, e.g. negotiating bends using electrical circuitry or regulation means B60T8/17
• CPC Class Codes: B60T 8/246 Change of direction
• CPC Class Codes: B60T 8/322 Systems specially adapted for vehicles driven by more than one axle, e.g. Four Wheel-Drive vehicles
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/12 including control of differentials
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 30/045 Improving turning performance

Abstract

A device operable to control a turning of a vehicle, includes: a motion controller operable to: control a first adjuster so as to increase the drive force applied to at least one of front wheels and rear wheels situated in an inner side of the turning, and control a second adjuster so as to increase the braking force applied to at least one of the front wheels and the rear wheels situated in an outer side of the turning; and control the first adjuster so as to increase the drive force applied to at least one of the front wheels and the rear wheels situated in an outer side of the turning, and control the second adjuster so as to increase the braking force applied to at least one of the front wheels and the rear wheels situated in an inner side of the turning.

Claims

1. A device operable to control a turning of a vehicle, comprising:

a first adjuster, operable to adjust a drive force applied to at least one of front wheels and rear wheels of the vehicle;

a second adjuster, operable to adjust a braking force applied to at least one of the front wheels and the rear wheels; and

a motion controller, operable to provide a control amount which is distributed to the first adjuster with a first ratio and to the second adjuster with a second ratio, the motion controller operable to;

control the first adjuster so as to increase the drive force applied to the at least one of the front wheels and the rear wheels situated in an inner side of the turning, and control the second adjuster so as to increase the braking force applied to at least one of the front wheels and the rear wheels situated in an outer side of the turning, in order to suppress yawing of the vehicle;

control the first adjuster so as to increase the drive force applied to at least one of the front wheels and the rear wheels situated in an outer side of the turning, and control the second adjuster so as to increase the braking force applied to at least one of the front wheels and the rear wheels situated in an inner side of the turning, in order to facilitate the yawing;

increase the first ratio in order to facilitate the yawing; and

increase the second ratio in order to suppress the yawing.

2. The device according to claim 1, further comprising

a detector, operable to detect an acceleration and deceleration of the vehicle, wherein:

the motion controller is operable to increase the first ratio in a case that the detector detects the acceleration; and

the motion controller is operable to increase the second ratio in a case that the detector detects the deceleration.

3. The device according to claim 1, further comprising

a detector, operable to detect a velocity of the vehicle, wherein:

the motion controller is operable to increase the first ratio in a case that the velocity detected by the detector is less than a prescribed value; and

the motion controller is operable to increase the second ratio in a case that the velocity detected by the detector is no less than the prescribed value.