Torque transfer mechanism with hydraulic control system for a fo

Details Torque transfer mechanism with hydraulic control system for a fo Torque transfer mechanism with hydraulic control system for a fo

1981-03-30

1984-04-24

Hermann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74740, 74869, 180247, 192104F, F16H 3706, F16H 3700, B60K 4108, F01N 718

Patent

active

044440731

ABSTRACT:
A four wheel drive torque transfer mechanism with a hydraulic control system is switchable between two wheel drive and four wheel drive during running of a vehicle having an automatic transmission.
When a two wheel drive mode of operation is selected, the hydraulic control system automatically actuates the torque transfer mechanism to provide a four wheel drive operation if a governor output responsive to vehicle speed, falls below a predetermined level, and to provide a two wheel drive operation if a governor output exceeds the predetermined level.

REFERENCES:
patent: 2988951 (1961-06-01), Mair et al.
patent: 3484009 (1969-12-01), Barbee et al.
patent: 3625322 (1971-12-01), Nagamatsu
patent: 3627072 (1971-12-01), Smirl
patent: 3963085 (1976-06-01), Vinton
patent: 4139015 (1979-02-01), Sakai

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