Speed change control method and device of automatic transmission

Details Speed change control method and device of automatic transmission Speed change control method and device of automatic transmission

1982-01-08

1986-02-25

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74844, 74863, B60K 4110

Patent

active

045720290

ABSTRACT:
A speed change method and apparatus for the transmission of a vehicle provides for a speed change stage to produce a reduction gear ratio lower than a predetermined value when the engine temperature is low and vehicle speed is high, otherwise the speed change stage is prohibited from operating.

REFERENCES:
patent: 2353840 (1944-07-01), McKechnie
patent: 3640156 (1972-02-01), Mori et al.
patent: 3748929 (1973-07-01), Green
patent: 3895541 (1975-07-01), Nohira et al.

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