Automatic travel speed control for a harvesting machine

Details Automatic travel speed control for a harvesting machine Automatic travel speed control for a harvesting machine

1985-05-02

1987-11-10

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

180306, 180307, F16H 3946

Patent

active

047048662

ABSTRACT:
The present invention relates to a travel speed control for a hydrostatically propelled harvesting machine or the like, and more particularly to a control system which automatically slows the travel speed of the harvesting machine at a fast rate in response to lugging of the engine and subsequently allows recovery of the travel speed to be at a fast rate initially, followed by a slow recovery rate to insure stability of the control system while minimizing the time required for travel speed recovery.

REFERENCES:
patent: 3901031 (1975-08-01), Knapp et al.
patent: 3924410 (1975-12-01), Cornell et al.
patent: 4355509 (1982-10-01), Fulkerson et al.
patent: 4448021 (1984-05-01), Hawkins
patent: 4455770 (1984-06-01), Presley
patent: 4523892 (1985-06-01), Mitchell et al.
patent: 4542802 (1985-09-01), Garvey et al.
Harvstmor brochure by Woodward Governor Company, Harvstmor Control for Self-Propelled Harvesters (no date) (6 pages).
SAE Technical Paper Series, No. 830582, Diesel Engine Load Control with a Hydrostatic Transmission (Feb. 28-Mar. 4, 1983) (12 pages).
The Honeywell instruction manual for the Forward Speed Control W883A, (Rev. 2/77) (9 pages).
The Honeywell interoffice correspondence, Slow Recovery Circuit on Engine Load Control System, Tom Fulkerson (Dec. 17, 1979) (3 pages).

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