Cooling system for automotive engine or the like

Patent · Tue Dec 23 00:00:00 EST 1986

OSTI ID:7050178

Hirano, Y

This patent describes, in an internal combustion engine having a structure subject to high heat flux a cooling circuit for removing heat from the engine comprising: a coolant jacket formed about the structure, the coolant jacket being arranged to receive coolant in liquid form and discharge same in gaseous form; a radiator in which the gaseous coolant produced in the coolant jacket is condensed to its liquid form; a vapor transfer conduit leading from the coolant jacket to the radiator for transferring gaseous coolant from the coolant jacket to the radiator; a device associated with the radiator for varying the rate of heat exchange between the radiator and a cooling medium surrounding the radiator; a liquid coolant return conduit leading from the radiator to the coolant jacket for returning coolant condensed to its liquid state in the radiator to the coolant jacket; a reservoir the interior of which is maintained constantly at atmospheric pressure; and valve and conduit means for selectively interconnecting the reservoir and the cooling circuit, the valve and conduit means including a three-way valve disposed in the return conduit and a level control conduit leading from the three-way valve to the reservoir. The three-way valve has a first state wherein fluid communication between the radiator and the coolant jacket is interrupted and communication between the radiator and the reservoir established, and a second state wherein communication between the reservoir and the radiator is interrupted and communication between the radiator and the coolant jacket established.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4630574
• OSTI ID: 7050178
• Resource Relation: Patent File Date: Filed date 27 Sep 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
COOLING SYSTEMS
VEHICLES
ATMOSPHERIC PRESSURE
COMPUTERIZED CONTROL SYSTEMS
COOLANTS
GAS FLOW
HEAT FLUX
HEAT TRANSFER
JACKETS
PRESSURE CONTROL
PUMPS
RADIATORS
VALVES
VELOCITY
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENERGY SYSTEMS
ENERGY TRANSFER
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
HEAT ENGINES
HEAT EXCHANGERS
330100* - Internal Combustion Engines