Drive force control method for four-wheel drive vehicle

Details Drive force control method for four-wheel drive vehicle Drive force control method for four-wheel drive vehicle

2007-09-04

2007-09-04

Morris, Lesley D. (Department: 3611)

Motor vehicles

Having four wheels driven

C180S197000, C180S248000, C701S069000

Reexamination Certificate

active

11093151

ABSTRACT:
A drive force control method for a four-wheel drive vehicle including a torque distributing mechanism capable of changing a drive force distribution ratio between front and rear wheels and a drive force distribution ratio between right and left front wheels or between right and left rear wheels. This method includes the steps of increasing the drive force distribution ratio of the rear wheels to the front wheels according to an increase in absolute value of a lateral G signal, and increasing the drive force distribution ratio of a turning outer wheel as one of the right and left front wheels or one of the right and left rear wheels to a turning inner wheel as the other. A lateral G sensor signal is corrected by an estimated lateral G signal calculated according to a steering angle and a vehicle speed to obtain a control lateral G signal, which is used as the lateral G signal.

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patent: 5225984 (1993-07-01), Nakayama
patent: 5701247 (1997-12-01), Sasaki
patent: 6131054 (2000-10-01), Shibahata
patent: 1-182128 (1989-07-01), None
patent: 1-233124 (1989-09-01), None

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