Shift control system for automatic transmission

Details Shift control system for automatic transmission Shift control system for automatic transmission

1989-01-25

1991-12-24

Lall, Parshotam S.

Boots, shoes, and leggings

74859, 74866, B60K 4118

Patent

active

050758586

ABSTRACT:
A shift control strategy is disclosed whereby a timing at which the states of shift solenoids are switched is determined based on an actual revolution speed ratio, namely a ratio of revoltion speed of an input shaft of a gear train to a revolution speed of an output shaft thereof, and a predetermined data containing various revolution speed ratio values versus kinds of shift and throttle opening degrees.

REFERENCES:
patent: 4680988 (1987-07-01), Mori
patent: 4691285 (1987-09-01), Takeda
patent: 4730519 (1988-03-01), Nakamura et al.
patent: 4730521 (1988-03-01), Hayasaki et al.
patent: 4739483 (1988-04-01), Ina et al.
patent: 4845618 (1989-07-01), Narita
"Full Range Electronic Controlled Automatic Transmission Full Range E-AT" published by Nissan Motor Company Limited Mar. 1987.
(Service Manual) "Nissan Cedric and Gloria" Introduction of E-Y31, EPY-31, EPAY-31 Types, published by Nissan Motor Company Limited Jun. 1987, pp. C-11 -C-60.

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