Speed stage shifting of automatic transmission with modification

Details Speed stage shifting of automatic transmission with modification Speed stage shifting of automatic transmission with modification

1991-07-24

1992-02-18

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

475151, F16H 6104

Patent

active

050883496

ABSTRACT:
In shifting speed stages of an automatic transmission by selective engagement and disengagement of friction engaging means, first and second patterns of combination of engagement and disengagement of the friction engaging means are prepared for a certain one speed stage so that a certain one of the friction engaging means bears a first magnitude of torque under the first pattern and a second magnitude of torque greater than the first magnitude of torque under the second pattern, and speed stage shifting to or from the first pattern is carried out through the second pattern.

REFERENCES:
patent: 4106369 (1978-08-01), Taga
patent: 4222292 (1980-09-01), Will et al.
patent: 4346626 (1982-08-01), Kawamoto
patent: 4350058 (1982-09-01), Miller et al.
patent: 4727472 (1988-02-01), Deutsch et al.
patent: 4742461 (1988-05-01), Eschrich et al.
patent: 4742733 (1988-05-01), Schreiner
patent: 4890515 (1990-01-01), Taniguchi et al.

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