Hydraulic and electronic control system for an automatic transmi

Details Hydraulic and electronic control system for an automatic transmi Hydraulic and electronic control system for an automatic transmi

1984-03-14

1986-10-14

Dorner, Kenneth J.

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4118

Patent

active

046165312

ABSTRACT:
A control system for an automatic transmission equipped with a plurality of friction engaging devices for attaining a plurality of shift ranges by locking the elements of a gear mechanism, which is disposed between an input shaft and an output shaft, to a case, by bringing the elements into and out of engagement with the input shaft or output shaft, or into and out of engagement with each other, said friction engaging devices including a first friction engaging device (C2) which takes part in achieving a reverse shift, and a second friction engaging device (B2) which participates in achieving parking and reverse the control system includes an electronic control circuit means which controls the timing of the actuation of the first and second friction engaging devices upon shifting from parking to reverse range so as to mitigating shock upon gear shifting.

REFERENCES:
patent: 3738182 (1973-06-01), Kubo et al.
patent: 3938409 (1976-02-01), Uozumi
patent: 4346626 (1982-08-01), Kawamoto

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