Control for effecting downshift during vehicle turning operation

Details Control for effecting downshift during vehicle turning operation Control for effecting downshift during vehicle turning operation

1979-04-27

1981-04-14

Silverstrim, John P.

Motor vehicles

Steering by driving

Independently operable drive motors

60427, 60484, B62D 1104

Patent

active

042614317

ABSTRACT:
A vehicle is provided with right and left traction drives powered by first and second reversible two-speed hydraulic motors. A solenoid-operated speed control valve is coupled to the motors for shifting the latter to high speed operation in response to the valve being energized. Travel control valves for the motor are coupled to switches connected in the circuitry for controlling the speed control valve such that during high speed operation of the vehicle the motors will be automatically downshifted in response to the travel control valves being operated to cause the vehicle to be turned.

REFERENCES:
patent: 3803841 (1974-04-01), Erikson

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