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US6634451: Power distribution control system for a vehicle

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Filing Information

Inventor(s) Ryuzo Sakakiyama ·
Assignee(s) Fuji Jukogyo Kabushiki Kaisha ·
Attorney/Agent(s) Smith, Gambrell & Russell, LLP ·
Primary Examiner Lesley D. Morris ·
Assistant Examiner Daniel Yeagley ·
Application Number US9984149
Filing date 10/29/2001
Issue date 10/21/2003
Prior Publication Data
Predicted expiration date 11/16/2021
Patent term adjustment 18
U.S. Classifications 180/197  · 701/89  · 701/69  · 180/248  ·
International Classifications --
Kind CodeB2
International Classifications 180197 · 180233 · 180248 · 180249 · 180242 · 701 67 · 701 69 · 701 82 · 701 89 · 701 1 · 701 87 · 192 541 · 477174 ·
Foreign Priority JP2000329348 - 10/27/2000 ·
12 Claims, 5 Drawings


Abstract

A power distribution control system for a vehicle, in which a front/rear drive-force distribution control unit computes a torque-response-torque, a revolution-difference-response-torque and a yaw-rate feed back torque. When a torque down command by a traction control is not outputted to an engine control unit, and a braking force control is not active, a transfer clutch torque is setted as defined by a predetermined equation.

Independent Claims | See all claims (12)

  1. 1. A power distribution control system for a vehicle comprising: a vehicle motion controller for controlling a motion of the vehicle; a power distribution controller; and a variable capacity torque transmission clutch operated by an operating torque set by said power distribution controller; wherein said power distribution controller includes: first torque setting means for computing a torque-response-torque that is based on an input torque received from a drive source and distributed to the front and rear wheels; second torque setting means for computing a revolution-difference-response-torque based on a revolution-difference between a front shaft and a rear shaft; and operating torque setting means for computing said operating torque using at least said torque-response-torque and said revolution-difference-response-torque, wherein when said vehicle motion controller operates, said operating torque setting means computes said operating torque except said revolution-difference-response-torque.
  2. 2. A power distribution control system for a vehicle comprising: a vehicle motion controller for controlling a motion of the vehicle; and a variable capacity torque transmission clutch operated by an operating torque set by a power distribution controller; wherein said power distribution controller includes: first torque setting means for computing a torque-response-torque that is based on an input torque received from a drive source and distributed drive power to the front and rear wheels; second torque setting means for computing a revolution-difference-response-torque based on a revolution-difference between a front shaft and a rear shaft; yaw-rate feedback torque setting means for computing a yaw rate feedback torque based on a yawing state of the vehicle; and operating torque setting means for computing said operating torque using at least said torque-response-torque, said revolution-difference-response-torque and said yaw rate feedback torque, wherein when said vehicle motion control means operates, said operating torque setting means computes said operating torque except said revolution-difference-response-torque and said yaw rate feedback torque.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US5002147* Fuji Jukogyo Kabushiki Kaisha Tezuka et al. Mar 1991
US5041978* Mazda Motor Corporation Nakayama et al. Aug 1991
US5168955* Nissan Motor Company, Limited Naito Dec 1992
US5224044* Nissan Motor Company, Limited Tamura et al. Jun 1993
US5270930* Mitsubishi Jidosha Kogyo Kabushiki Kaisha Ito et al. Dec 1993
US5631829* Nissan Motor Co., Ltd. Takasaki et al. May 1997
US5671144* Zexel Torsen Inc. Ryan et al. Sep 1997
US5754967* Mitsubishi Denki Kabushiki Kaisha Inoue et al. May 1998
US6094614* Fuji Jukogyo Kabushiki Kaisha Hiwatashi Jul 2000
US20020045981* Fuji Jukogyo Kabushiki Kaisha Ichikawa et al. Apr 2002
US20020107628* Fuji Jukogyo Kabushiki Kaisha Sakakiyama Aug 2002
US20030079954* TOYODA KOKI KABUSHIKI KAISHA Murakami et al. May 2003

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
JP6137541Feb 1986
JP62059126*Mar 1987
JP01094025*Apr 1989
JP01114523*May 1989
JP02290737*Nov 1990
JP2002127772*FUJI HEAVY IND LTDMay 2002
* cited by examiner