Title:
CONTROL METHOD OF FOUR-WHEEL DRIVE VEHICLE, CONTROL DEVICE OF FOUR-WHEEL DRIVE VEHICLE AND FOUR-WHEEL DRIVE VEHICLE
Document Type and Number:
Japanese Patent JP2018127043
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a four-wheel drive vehicle, a control method of the same and a control device of the same, which allow the vehicle to quickly transit from a two-wheel drive state to a four-wheel drive state while suppressing a device from being enlarged in size and increased in weight.SOLUTION: A control device 9, which controls a four-wheel drive vehicle 100 which is configured so that driving force is transmitted to rear wheels 105L and 105R through an engagement clutch 12, a propeller shaft 108 and a driving force transmission device 1, reduces a difference in rotation speed between an intermediate rotary member 3 and a ring gear member 22 by force of friction force between a friction surface 522a of a friction member 52 which is restricted from rotating relatively to the intermediate rotary member 3 and a frictioning/sliding target surface 221a of the ring gear member 22, in a state where engagement force of friction clutches 41 and 43 which transmit driving force between first and second output rotary members 61 and 62 of the driving force transmission device 1 and the intermediate rotary member 3 when the vehicle transmits to a four-wheel drive state is set as engagement force allowing the members to relatively rotate; and thereafter connects the intermediate rotary member 3 to the ring gear member 22 using a clutch member 51.SELECTED DRAWING: Figure 1
Inventors:
FUJII NORIYUKI
Application Number:
JP2017020250A
Publication Date:
August 16, 2018
Filing Date:
February 07, 2017
Export Citation:
Assignee:
JTEKT CORP
International Classes:
B60K23/08; B60K17/348; F16D11/10; F16D13/24; F16D48/02
Domestic Patent References:
| JP2015120501A | 2015-07-02 | |||
| JP2014177989A | 2014-09-25 | |||
| JP2016179734A | 2016-10-13 |
Foreign References:
| WO2015129695A1 | 2015-09-03 |
Attorney, Agent or Firm:
Tadao Hirata
Takashi Nomiyama
Hiroyuki Ito
Takashi Nomiyama
Hiroyuki Ito