Apparatus for controlling the coolant medium circulation of an i

Details Apparatus for controlling the coolant medium circulation of an i Apparatus for controlling the coolant medium circulation of an i

1985-09-23

1987-02-03

Cuchlinski, Jr., William A.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4127, 16510432, F01P 1102

Patent

active

046402357

ABSTRACT:
A device is provided for protecting the coolant circulation in an internal combustion engine, especially a motor vehicle engine, from excess pressure. A first pressure control valve is arranged in the upper region of a coolant-carrying tank and adjusted to a first opening pressure. A float is arranged in the tank which, in a sealing manner, can be engaged with a lead-in to the pressure control valve so that, in the case of an excessive rise of the coolant in the tank, the pressure control valve is not operative. The ejection of cooling water in the switch-off phase of a previously heated internal combustion engine is thereby prevented. In order to avoid an unacceptable increase of pressure in the coolant-circulating system, a second pressure control valve is provided which is designed for a higher opening pressure than the first one. As a result, the coolant-circulating system is protected from excessive pressures.

REFERENCES:
patent: 1703163 (1929-02-01), Muir
patent: 2127271 (1938-08-01), Schenk
patent: 4478178 (1984-10-01), Pernet

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