Clutch-to-clutch shifting

Details Clutch-to-clutch shifting Clutch-to-clutch shifting

1991-05-01

1992-08-04

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

3644241, F16H 6108

Patent

active

051349043

ABSTRACT:
A clutch-to-clutch shifting in an automatic transmission is disclosed. According to the present invention, a timing at which an off-going element is to be released after engagement process of an on-coming element has been initiated is determined in response to a derivative, with respect to time, of a revolution speed of a rotary element, i.e., an input shaft.

REFERENCES:
patent: 3719096 (1973-03-01), Sprague et al.
patent: 3942393 (1976-03-01), Forster et al.
patent: 4224042 (1980-09-01), Rabus et al.
patent: 4226295 (1980-10-01), Rembold et al.
patent: 4228700 (1980-10-01), Espenschied et al.
patent: 4485443 (1984-11-01), Knodler et al.
patent: 4730521 (1988-03-01), Hayasaki et al.
patent: 4852006 (1989-07-01), Speranza
patent: 4897790 (1990-01-01), Bieber
patent: 4898049 (1990-02-01), Niikura
patent: 4947329 (1990-08-01), Benford et al.
patent: 4947331 (1990-08-01), Speranza
M. B. Leising et al. Adaptive Control Strategies for Clutch-To-Clutch Shifting SAE Paper No. 905048 pp. 331 to 341 no date.
Maurice B. Leising et al. The All-Adaptive Controls for the Chrysler Ultradrive Transaxle SAE paper No. 890529 pp. 45 to 53 no date.
Nissan Full-Range Electronically Controlled Automatic Transmission Service Manual, (A261C07) (no date).

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