Trencher power control system

Details Trencher power control system Trencher power control system

1982-07-06

1984-06-26

Crowder, Clifford D.

Excavating

Peat excavators

60449, E02F 506

Patent

active

044557701

ABSTRACT:
An automatic horsepower control system on a working vehicle which varies the vehicle drive speed so as to maintain a maximum torque output on the working function of the vehicle. The prime mover of the vehicle drives the work function and also a pump which in turn supplies motordriven wheels for moving the vehicle. A stroker control cylinder controlled by a solenoid operated valve varies the pump flow rate to the motor to change vehicle speeds, said solenoid operated valve being signaled by an electronic controller which compares the prime mover's RPM with a standard to determine the torque load from the work function, and accordingly signals the valve to increase or decrease the flow to the motor to adjust vehicle speed and maintain a constant work load on the prime mover.

REFERENCES:
patent: 3605903 (1971-09-01), Glesmann
patent: 3943715 (1976-03-01), Miyao et al.
patent: 3981374 (1976-09-01), Johns, Jr.
patent: 4180979 (1980-01-01), Cornell
patent: 4337587 (1982-07-01), Presley

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