Control system for alleviating shock in automatic transmission

Details Control system for alleviating shock in automatic transmission Control system for alleviating shock in automatic transmission

1987-11-16

1989-09-19

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

60418, 74869, B60K 4106

Patent

active

048671940

ABSTRACT:
An accumulator designed to alleviate a so-called N-D select shock is connected in a hydraulic control system for an automatic transmission such that it can also alleviate a 3-4 shift shock. The accumulator includes a piston and a spring biasing the piston. The spring force of the spring is appropriately set such that the piston starts moving against the spring in response to small pressure build-up of a drive range select pressure.

REFERENCES:
patent: 3174500 (1965-03-01), Johnson et al.
patent: 3640301 (1972-02-01), Jania
patent: 4076036 (1978-02-01), Taft
patent: 4369804 (1983-01-01), Bouvet et al.
patent: 4631982 (1986-12-01), Miki et al.
patent: 4633738 (1987-01-01), Timte
patent: 4722250 (1988-02-01), Sumiya et al.

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