Shift control device for an automatic transmission

Details Shift control device for an automatic transmission Shift control device for an automatic transmission

1990-11-13

1992-06-02

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74866, 74869, 3644241, B60K 4106, B60K 2002

Patent

active

051177129

ABSTRACT:
A shift control device for an automatic transmission comprises a shift valve, a solenoid valve connected to the shift valve, a shift timing valve also connected to the shift valve, a cut-off device connected to the solenoid valve and the shift timing valve, and a timing solenoid valve connected to the cut-off device so as to avoid the problem of shift shock which occurs when the timing solenoid valve is in an abnormal operating condition.

REFERENCES:
patent: 4468987 (1984-09-01), Miller
patent: 4476747 (1984-10-01), Kawamoto
patent: 4838126 (1989-06-01), Wilfinger et al.
patent: 4901603 (1990-02-01), Ishikawa
patent: 4995285 (1991-02-01), Hayakawa et al.
patent: 5020393 (1991-06-01), Kuwayama et al.

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