Title:
DRIVING FORCE CONTROLLER FOR FOUR-WHEEL DRIVE VEHICLE
Document Type and Number:
Japanese Patent JP3642041
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a driving force controller for a four-wheel drive vehicle capable of securing both of original vehicle acceleration performance based on four-wheel drive and vehicle body speed estimation accuracy while improving durability of a friction clutch.
SOLUTION: This driving force controller for the four-wheel drive vehicle having the friction clutch 10 arranged in the middle of an engine drive system to rear wheels 15 and 16 is provided with a 4WD controller 31 performing control for changing a driving force distribution ratio between front wheels 6 and 7 and the rear wheels 15 and 16 to an equal distribution ratio side according to the increase of a clutch engaging force. The driving force controller is also provided with a clutch force reducing control part outputting a clutch engaging force request requirement RQ-TRQ to the 4WD controller 31 for performing an approach to a 2WD condition when a value found by subtracting clutch transmission torque Tr from estimated clutch input torque Tinp is lower than a predetermined value δ and a wheel speed on the left side is substantially equal to that on the right side.
Inventors:
Ken Katayama
Gen Kosaka
Gen Kosaka
Application Number:
JP2001192485A
Publication Date:
April 27, 2005
Filing Date:
June 26, 2001
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
B60K17/344; B60K23/08; B60K17/35; B60K28/16; B60T8/172; B60T8/175; B60T8/1763; F16D48/06; F16D48/12; (IPC1-7): B60K17/35; B60T8/58
Domestic Patent References:
| JP2002166737A | ||||
| JP2001039287A | ||||
| JP4103847A | ||||
| JP3054029A | ||||
| JP62283021A | ||||
| JP62139722A | ||||
| JP63170129A |
Attorney, Agent or Firm:
Satoru Asakura