Cooling system for automotive engine or the like

Details Cooling system for automotive engine or the like Cooling system for automotive engine or the like

1984-10-23

1985-10-29

Cuchlinski, Jr., William A.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4121, 123 4127, F01P 322

Patent

active

045495050

ABSTRACT:
In order to minimize the size of an auxiliary coolant reservoir and to ensure that the appropriate control is executed over the system during all phases of engine operation, a control circuit including a microprocessor is arranged to selectively induce a non-condensible purge mode, cold start mode, normal operation mode, overcooled mode and a system shut-down mode. The latter mentioned mode allows for the coolant to cool down before the system is switch from closed to open states and minimizes the tendancy for coolant to be displaced from the system in large quantities under the influence of a positive pressure which tends to prevail at the time the engine is stopped. Control of the various modes is facilitated by a valve/conduiting arrangement which features three basic conduits each of which include one ON/OFF type electromagnetic valve.

REFERENCES:
patent: 3425400 (1969-02-01), Scherenberg
patent: 4362131 (1982-12-01), Mason et al.
patent: 4473037 (1984-09-01), Michassouridis et al.

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