BRAKING CONTROL DEVICE OF VEHICLE

• US 20080215223A1
• Filed: 01/04/2008
• Published: 09/04/2008
• Est. Priority Date: 01/11/2007
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kobayashi, Yasushi, YAMADA, Yoshihisa
• Application Number:
  US11/969,384
• Publication Number:
  US 20080215223A1
• Time in Patent Office: Days
• US Class Current: 701/81
• 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 8/1769 specially adapted for vehicles having more than one driven axle, e.g. four-wheel drive vehicles

Abstract

In a braking control device which performs braking control to stabilize vehicle behavior, a driving state switching unit changes a driving state of a vehicle. A slip condition detecting unit detects a slip condition of the vehicle. A braking control permission judging unit determines whether actuation of braking control is permitted. The braking control permission judging unit is arranged so that, if the driving state is changed to a direct-connection four-wheel-drive condition by the driving state switching unit, the braking control permission judging unit permits actuation of braking control when the slip condition detected by the slip condition detecting unit exceeds a predetermined slip condition.

Claims

1. A braking control device which performs braking control to stabilize vehicle behavior, comprising:

a driving state switching unit configured to change a driving state of a vehicle;

a slip condition detecting unit configured to detect a slip condition of the vehicle; and

a braking control permission judging unit configured to determine whether actuation of braking control is permitted,

wherein the braking control permission judging unit is arranged so that, if the driving state is changed to a direct-connection four-wheel-drive condition by the driving state switching unit, the braking control permission judging unit permits actuation of braking control when the slip condition detected by the slip condition detecting unit exceeds a predetermined slip condition.

2. The braking control device according to claim 1, wherein the slip condition detecting unit detects a slip condition of the vehicle based on at least one of a vehicle speed and a steering angle.

3. The braking control device according to claim 1, wherein the predetermined slip condition is set up based on a predetermined slip ratio and a predetermined slip angle.

4. The braking control device according to claim 2, wherein the predetermined slip condition is set up based on a predetermined slip ratio and a predetermined slip angle.