Internal-combustion engines – Cooling – Interrelated coolant flow and throttle control
Patent
1981-05-18
1983-01-25
Cuchlinski, Jr., William A.
Internal-combustion engines
Cooling
Interrelated coolant flow and throttle control
123 4129, 123 4144, 123 4182R, F01P 302, F01P 716
Patent
active
043697380
ABSTRACT:
An internal combustion engine includes a cylinder head formed with a cooling jacket which has an inlet and an outlet, a cylinder block formed with a cooling jacket which has an inlet and an outlet, and a radiator. A cooling system includes: a first pump for the head jacket, a second pump for the block jacket, a temperature sensor for sensing the temperature of the cooling fluid passing out through the block outlet, a block recirculation conduit system leading from the block outlet so as to supply cooling fluid flow to the block inlet, a main recirculation conduit system of which an upstream part is communicated to the head outlet and a downstream part is communicated to the radiator inlet, a radiator output conduit system which leads from the radiator outlet both to the head inlet and also to the block inlet and which communicates the downstream part of the block recirculation conduit system to the head inlet, a first valve for controlling flow of cooling fluid through the radiator, a flow mixing conduit which communicates a part of the main recirculation conduit system with a part of the block recirculation conduit system, a second valve for controlling flow of cooling fluid through the flow mixing conduit, and a controller which receives the signal from the sensor and which controls the first and second valves.
REFERENCES:
patent: 1985240 (1934-12-01), Brubaker
patent: 3444845 (1969-05-01), Scheiterlein
patent: 3757747 (1973-09-01), Hartmann
patent: 4109617 (1978-08-01), Ernest
patent: 4212270 (1980-07-01), Nakanishi et al.
patent: 4249491 (1981-02-01), Stein
Cuchlinski Jr. William A.
Toyota Jidosha Kogyo Kabushiki Kaisha
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