Internal-combustion engines – Cooling – Automatic coolant flow control
Patent
1980-11-12
1982-11-09
Cuchlinski, Jr., William A.
Internal-combustion engines
Cooling
Automatic coolant flow control
440900, F01P 714
Patent
active
043579124
ABSTRACT:
Disclosed herein is a marine propulsion device including an internal combustion engine having a water jacket with an inlet portion, a second portion, and a valve port communicating between the inlet portion and the second portion, a valve member movable relative to the valve port between open and closed positions, a recess extending from the inlet portion, a movable wall connected to the valve member for actuation thereof between the open and closed positions, which movable wall has opposite first and second sides and extends across the recess to define, on the first side thereof, a chamber located in the recess, and being subject, on the second side thereof, to the pressure of the water in the inlet portion, a water pump driven by the engine, having a discharge outlet, and communicating with the water during normal operation, a water supply conduit communicating with the discharge outlet and with the water jacket inlet portion, and including an overboard discharge branch conduit communicating with the atmosphere, a duct communicating with the chamber and with the overboard discharge branch conduit, and a valve in the overboard discharge branch conduit downstream of the connection with the duct and operable selectively to open and close the overboard discharge branch conduit relative to the atmosphere.
REFERENCES:
patent: 2989282 (1961-06-01), White
patent: 3667431 (1972-06-01), Kueny et al.
patent: 3918418 (1975-11-01), Horn
patent: 4140089 (1979-02-01), Kueny et al.
Cuchlinski Jr. William A.
Outboard Marine Corporation
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