Invention Grant
- Patent Title: Clutch control device for 4-wheel drive vehicle
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Application No.: US15117914Application Date: 2015-02-24
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Publication No.: US09688142B2Publication Date: 2017-06-27
- Inventor: Katsuyoshi Ogawa , Atsuhiro Mori , Shunichi Mitsuishi , Makoto Morita , Tetsu Takaishi
- Applicant: Nissan Motor Co., Ltd.
- Applicant Address: JP Yokohama
- Assignee: Nissan Motor Co., Ltd.
- Current Assignee: Nissan Motor Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Global IP Counselors, LLP
- Priority: JP2014-036446 20140227
- International Application: PCT/JP2015/055250 WO 20150224
- International Announcement: WO2015/129695 WO 20150903
- Main IPC: B60K23/08
- IPC: B60K23/08 ; B60K17/344 ; F16D25/0638 ; B60K17/02 ; F16D21/00 ; F16D48/00

Abstract:
A clutch control device is provided for a four-wheel drive vehicle for transmitting drive force to the rear wheels. The clutch control device includes a dog clutch and a friction clutch, and a controller that controls the dog clutch and the friction clutch. The controller starts the engagement of the dog clutch, after placing the dog clutch in a rotationally synchronized state by engaging the friction clutch and increasing an output rotation thereof, when there is a request to engage the dog clutch. In this clutch control device, the controller sets the engagement start timing of the friction clutch when a transition is made to the connected, four-wheel drive mode to an earlier timing compared to when a transition is made to the standby two-wheel drive mode, when there is a request to engage the dog clutch while in a state in which the disconnected, two-wheel drive mode is selected.
Public/Granted literature
- US20160355089A1 CLUTCH CONTROL DEVICE FOR 4-WHEEL DRIVE VEHICLE Public/Granted day:2016-12-08
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