Cooling system for automotive engine or the like

Patent · Tue Dec 09 04:00:00 EST 1986

OSTI ID:7010358

Hayashi, Y

A cooling system is described for an internal combustion engine having a structure subject to high heat flux and a lubricant system, comprising: a coolant jacket disposed about the structure and into which coolant is introduced in liquid form and permitted to boil; a radiator in which gaseous coolant is condensed to its liquid state; a vapor transfer conduit leading from the coolant jacket to the radiator for transferring coolant vapor from the coolant jacket to the radiator for condensation therein; means for returning liquid coolant from the radiator to the coolant jacket in a manner to maintain the structure immersed in a predetermined depth of liquid coolant; a device associated with the radiator for varying the rate of heat exchange between the radiator and a cooling medium which surrounds the radiator; a first parameter sensor for sensing a parameter which varies with the temperature of the coolant in the coolant jacket; a second parameter sensor for sensing a parameter which varies with the load on the engine; a circuit response to the first and second parameter sensors for operating the device in a manner which tends to maintain the temperature of the coolant in the coolant jacket at a level determined in response to the load on the engine; a housing in fluid communication with the coolant jacket; and a heat exchanger disposed in the housing and immersed in liquid coolant, the heat exchanger being arranged to have lubricant from engine lubricating system circulated therethrough.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4627397
• OSTI ID: 7010358
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
BOILING
COOLANTS
COOLING SYSTEMS
ENERGY SYSTEMS
ENERGY TRANSFER
ENGINES
FLUID FLOW
HEAT ENGINES
HEAT EXCHANGERS
HEAT FLUX
HEAT TRANSFER
INTERNAL COMBUSTION ENGINES
LIQUID FLOW
LUBRICANTS
PHASE TRANSFORMATIONS
RADIATORS
TEMPERATURE DEPENDENCE
VAPOR CONDENSATION
VEHICLES