Traction control system for four-wheel steerable vehicle

• US 5,157,611 A
• Filed: 11/09/1990
• Issued: 10/20/1992
• Est. Priority Date: 11/10/1989
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Ikeda, Toru, Shiraishi, Shuji
• Primary Examiner(s): Chin, Gary
• Application Number:
  US07/610,913
• Time in Patent Office: 711 Days
• Field of Search: 364/424.05, 364/426.01, 364/426.02, 364/426.03, 364/571.01, 364/571.02, 180/197, 180/140-143, 280/91
• US Class Current: 701/90
• CPC Class Codes: B60K 28/16 responsive to, or preventing, skidding of wheels brake control systems for vehicle drive stability B60T8/1755; arrangements responsive to a speed condition for adjusting wheel braking force B60T8/32; control of vehicle driving stability otherwise than by controlling the propulsion unit only B60W30/02; preventing wheel slippage by reducing power in rail vehicles B61C15/00
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B62D 7/159 characterised by computing methods or stabilisation processes or systems, e.g. responding to yaw rate, lateral wind, load, road condition

Abstract

A traction control system for a four-wheel steerable vehicle includes a reference value generating circuit for generating a reference value for detecting a slippage of a drive wheel in a driving state, an output torque control device for controlling the torque of the drive wheel on the basis of an output from said reference value generating circuit so as to bring said drive wheel into a predetermined slipping state, and a reference value correcting circuit for correcting the reference value on the basis of a rear wheel steering angle. This makes it possible to insure a steering stability in a critical condition when a misalignment has been produced in phases of the front and rear wheels.

Claims

1. A traction control system for a four-wheel steerable vehicle, comprising a reference value generating means for generating a reference value for detecting a slippage of a drive wheel in a driving state, and an output torque control means for controlling the torque of the drive wheel on the basis of an output from said reference value generating means so as to bring said drive wheel into a predetermined slipping state, wherein said system further indludes a reference value correcting means for correcting said reference value on the basis of a rear wheel steering angle.