Method and device for automatic control of transmission

Details Method and device for automatic control of transmission Method and device for automatic control of transmission

1982-11-09

1985-12-10

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74861, 74863, B60K 4118

Patent

active

045571627

ABSTRACT:
A method and a device for automatic control of a transmission, in a vehicle in which a power from an internal combustion engine is transmitted through a clutch and a staged geared-transmission to driven wheels, an idea speed ratio delivered from a speed ratio calculating circuit being converted into a stepped actual speed ratio by means of a comparator circuit common to both forward and backward movements, and an actual speed ratio appropriate for the forward movement being given in advancing the vehicle or that appropriate for the backward movement being given in retracting it by utilizing an advancing/reversing signal judging whether the vehicle is being advanced or retracted on that occasion.

REFERENCES:
patent: 3759344 (1973-09-01), Blee et al.
patent: 3826158 (1974-07-01), Flaig
patent: 3903759 (1975-09-01), Hashimoto
patent: 3938409 (1976-02-01), Uozumi
patent: 3943799 (1976-03-01), Sakai et al.
patent: 4223573 (1980-09-01), Franssen
patent: 4274306 (1981-06-01), Yokoi et al.
patent: 4294341 (1981-10-01), Swart
patent: 4380048 (1983-04-01), Kishi et al.

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