Power transmission for four wheel drive vehicle

Details Power transmission for four wheel drive vehicle Power transmission for four wheel drive vehicle

1988-01-20

1989-02-14

Mitchell, David M.

Motor vehicles

Having four wheels driven

With manually operated means for disengaging drive to one or...

180250, 74665GE, F16H 3706

Patent

active

048040614

ABSTRACT:
A power transmission for a four wheel drive vehicle having a transfer gear assembly consisting of a planetary gear unit, a center-differential gear assembly consisting of a planetary gear unit which is located coaxially relative to and adjacent to the transfer gear assembly, and two shift mechanisms one individual to each gear assembly. One shift mechanism shifts the transfer gear assembly in a desired drive range and is located coaxially relative to and adjacent to the transfer gear assembly opposite to the center-differential gear assembly. The other shift mechanism shifts the center-differential gear assembly and is located coaxially relative to and adjacent to the center-differential opposite to the transfer gear assembly. Each shift mechanism consists of three splined clutch rings disposed coaxially relative to the gears and an axially movable clutch sleeve for selectively engaging with the three clutch rings so as to shift the gear between different operating modes.

REFERENCES:
patent: 4458557 (1984-07-01), Hayakawa
patent: 4677873 (1987-07-01), Eastman et al.
patent: 4733574 (1988-03-01), Uchiyama

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