Transmission control system

Details Transmission control system Transmission control system

1976-12-22

1978-08-15

Scott, Samuel

Machine element or mechanism

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

Preselected indexed position

B60K 4118

Patent

active

041063686

ABSTRACT:
A control system used to change the gear ratio in a gear set regulated by a signal from an electronic control unit is disclosed. A transducer provides an output torque signal which is compared to other signals for controlling the gear change. The ratio change is accomplished through a friction element engaged by hydraulic pressure. A unique diaphragm and solenoid control valve is used responsive to the electronic control unit to follow a shift control ramp to insure a smooth shift.

REFERENCES:
patent: 3447773 (1969-06-01), Huber
patent: 3732753 (1973-05-01), Olsen et al.
patent: 3890360 (1975-06-01), Pruvot et al.
patent: 3941015 (1976-03-01), Robinson
patent: 4008567 (1977-02-01), Hirsch

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