Center differential for four-wheel drive vehicles

Details Center differential for four-wheel drive vehicles Center differential for four-wheel drive vehicles

1996-03-29

1998-04-07

Wright, Dirk

Planetary gear transmission systems or components

Differential planetary gearing

Spur gear differential

F16H 106

Patent

active

057357668

ABSTRACT:
In a disclosed center differential, a front sun gear and a rear sun gear are received within a housing such that they are coaxial with a rotational axis of the housing. The pair of sun gears have helical teeth respectively. The helical teeth of the rear sun gear is helically twisted in a direction for generating a force for urging the rear sun gear toward a rear end wall of the housing when the vehicle makes a turn in its coast driving mode. A front friction generating mechanism is interposed between the front end wall of the housing and the front sun gear, and a rear friction generating mechanism is interposed between the rear end wall of the housing and the rear sun gear. A friction torque transmitted between the housing and the rear sun gear through the rear friction generating mechanism when the vehicle makes a turn in its coast driving mode is larger than a friction torque transmitted between the housing and the front sun gear through the front friction generating mechanism.

REFERENCES:
patent: 5147252 (1992-09-01), Mace et al.
patent: 5415601 (1995-05-01), Cilano
patent: 5529547 (1996-06-01), Okuda et al.
patent: 5599250 (1997-02-01), Nakajiima et al.
patent: 5647815 (1997-07-01), Bowerman et al.

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