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
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Application No.: US13375634Application Date: 2010-04-21
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Publication No.: US08483921B2Publication Date: 2013-07-09
- Inventor: Eigo Sakagami , Atsuhiro Mori
- Applicant: Eigo Sakagami , Atsuhiro 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

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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