System for controlling rotational speed of hydraulically driven

Details System for controlling rotational speed of hydraulically driven System for controlling rotational speed of hydraulically driven

1987-11-04

1989-01-17

Nelli, Rayond A.

Boot and shoe making

Miscellaneous

Assembly machines

123 4102, F01P 702

Patent

active

047981776

ABSTRACT:
A cooling fan for an internal combustion engine hydraulically driven by a flow of propellant hydraulic fluid is controlled of its rotational speed by a system which includes a device for sensing a value representing the operating temperature of the engine, a device for sensing the operating temperature of the propellant hydraulic fluid, and a device for controlling the flow of the propellant hydraulic fluid, so as to increase the flow rate of the propellant hydraulic fluid when the operating temperature of the engine increases and also when the operating temperature of the propellant hydraulic fluid increases.

REFERENCES:
patent: 3664129 (1972-05-01), Schwab
patent: 4062329 (1977-12-01), Rio
patent: 4179888 (1979-11-01), Goscenski, Jr.
patent: 4223646 (1980-09-01), Kinder
patent: 4348990 (1982-09-01), Nolte
patent: 4414809 (1983-11-01), Burris
patent: 4433648 (1984-02-01), LeBlanc
patent: 4479532 (1984-10-01), Watanabe
patent: 4539943 (1985-09-01), Tsuchikawa
patent: 4570849 (1986-02-01), Klaucke et al.
patent: 4709666 (1987-12-01), Merz

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