System for controlling cooling water temperature for a water-coo

Details System for controlling cooling water temperature for a water-coo System for controlling cooling water temperature for a water-coo

1982-04-26

1983-08-23

Tapolcai, William E.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4144, 236 345, F01P 714

Patent

active

043997767

ABSTRACT:
A system for controlling cooling water temperature for a water-cooled engine has an intake passage, a radiator, a water jacket provided in the engine for cooling the engine, a water passage for communicating the water jacket with the radiator, a thermostat provided in the water passage, the thermostat being so arranged as to open the water passage when the water temperature exceeds a predetermined value, and a pump causing the cooling water in the water jacket to flow. There is provided a bypass connected between the outlet of the water jacket and the inlet of the pump, and a circulation pipe connected between the outlet and inlet of the pump. A solenoid valve is provided for selectively connecting the water passage and circulation pipe with the inlet of the pump and a flow control valve is provided in the water passage for controlling flow rate of water. The solenoid valve operates, when water temperature is higher than a predetermined value, so that the bypass is communicated with the inlet of the pump thereby to cause the water in the water jacket to flow passing through the bypass. The flow control valve is operated in dependency on the engine speed and the load on the engine for the controlling the water temperature at a water temperature higher than the above mentioned predetermined value.

REFERENCES:
patent: 1500418 (1924-07-01), Page et al.
patent: 2134662 (1938-10-01), Flamm
patent: 3851629 (1974-12-01), Mayr et al.
patent: 3921600 (1975-11-01), Henning et al.
patent: 3939807 (1976-02-01), Eichinger
patent: 4337733 (1982-07-01), Hirata et al.

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