Invention Grant
US08483921B2 Two/four-wheel drive mode shift controller for traction-transmitting part time four-wheel drive vehicle and method for controlling the same 失效
牵引传动部分时间四轮驱动车辆的二/四轮驱动模式换档控制器及其控制方法

  • Patent Title: Two/four-wheel drive mode shift controller for traction-transmitting part time four-wheel drive vehicle and method for controlling the same
  • Patent Title (中): 牵引传动部分时间四轮驱动车辆的二/四轮驱动模式换档控制器及其控制方法
  • Application No.: US13375634
    Application Date: 2010-04-21
  • Publication No.: US08483921B2
    Publication Date: 2013-07-09
  • Inventor: Eigo SakagamiAtsuhiro Mori
  • Applicant: Eigo SakagamiAtsuhiro Mori
  • Applicant Address: JP Yokohama-shi
  • Assignee: Nissan Motor Co., Ltd.
  • Current Assignee: Nissan Motor Co., Ltd.
  • Current Assignee Address: JP Yokohama-shi
  • Agency: Foley & Lardner LLP
  • Priority: JP2009-134081 20090603
  • International Application: PCT/JP2010/057069 WO 20100421
  • International Announcement: WO2010/140433 WO 20101209
  • Main IPC: G06F7/00
  • IPC: G06F7/00
Two/four-wheel drive mode shift controller for traction-transmitting part time four-wheel drive vehicle and method for controlling the same
Abstract:
[Problem] A two-wheel→four-wheel drive switching for a traction-transmitting part time four-wheel drive vehicle in which a gear clutch for separating one of auxiliary driving wheels from a drive train is equipped can be carried out under a shock reduction.[Means for solving problem] In a case where a two-wheel→four-wheel drive switching request occurs during a traveling of the vehicle (step S11 and step S12), an operation of switching a traction-transmitting transfer from a non-transmitting state to a transmitting state is preceded (step S18 and step S22) and, thereafter, the gear clutch is engaged (step S21 and step S22) when a revolution speed difference ΔVw between main and auxiliary driving wheels is 0
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