Manual transmission for four wheel drive vehicle

Details Manual transmission for four wheel drive vehicle Manual transmission for four wheel drive vehicle

1997-11-13

1999-05-25

Wright, Dirk

Planetary gear transmission systems or components

Variable speed or direction transmission combined with...

Condition responsive

475206, 180249, F16H 3085

Patent

active

059065575

ABSTRACT:
A manual transmission for a four wheel drive vehicle having a driving force distributing apparatus is composed of a transmission gearing mechanism and a differential mechanism. The transmission gearing mechanism comprises an input shaft for transmitting driving force of an engine, an output shaft arranged on the same axis as the input shaft for outputting driving force of the transmission to the differential mechanism, a counter shaft arranged in parallel with the output shaft for transmitting driving force from the input shaft to the output shaft through transmission gears. The differential mechanism mounted at the rear end of the transmission mechanism on the same axis as the output shaft comprises a differential for distributing driving force of the transmission gearing mechanism into a front drive shaft and a rear drive shaft. Further, the differential mechanism includes a differential limiting mechanism for controlling a torque distribution ratio according to running conditions. The feature of this manual transmission is that the differential mechanism can be mounted in a relatively high position, therefore a pumping-up of lubrication oil in the differential mechanism can be avoided and as a result a stirring resistance of oil can be reduced, thereby fuel economy and oil deterioration are improved.

REFERENCES:
patent: 4318305 (1982-03-01), Wetrich et al.
patent: 4499791 (1985-02-01), Brisabois
patent: 4601217 (1986-07-01), Teroka et al.
patent: 4727954 (1988-03-01), Matsumoto
patent: 4744437 (1988-05-01), Matsumoto
patent: 4907472 (1990-03-01), Mura
patent: 5149307 (1992-09-01), Malloy et al.
patent: 5704866 (1998-01-01), Pritchard et al.
patent: 5762578 (1998-06-01), Forsyth

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