Shift control system of automatic transmission

Details Shift control system of automatic transmission Shift control system of automatic transmission

1985-10-04

1987-06-23

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

74752A, 74869, B60K 4104

Patent

active

046743642

ABSTRACT:
In a shift control system of an automatic transmission, wherein the shift control system includes at least a first and a second transmissions capable of automatically switching speeds separately of one another, and the first and the second transmissions are shifted simultaneously or alternately, to thereby achieve multi-speed shifts, there is provided means for starting and completing changes in rpm for the shift of rotary members of the second transmission during the operation of changes in rpm for the shift of rotary members of the first transmission, particularly when the first transmission is low gear shifted and the second transmission is shifted simultaneously, whereby the automatic transmission as a whole is down shifted, so that the shift characteristics can be maintained satisfactorily.

REFERENCES:
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patent: 2932988 (1960-04-01), Flynn et al.
patent: 3945265 (1976-03-01), Bell et al.
patent: 4148232 (1979-04-01), Moriya
patent: 4312248 (1982-01-01), Sugimoto et al.
patent: 4367528 (1983-01-01), Kawamoto et al.
patent: 4368650 (1983-01-01), Nomazawa et al.
patent: 4411174 (1983-10-01), Yokoi et al.
patent: 4456107 (1984-06-01), Ito et al.
patent: 4495576 (1985-01-01), Ito
patent: 4527447 (1983-07-01), Richards

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