Cooling system for automotive engine

Patent · Tue Dec 30 04:00:00 EST 1986

OSTI ID:7050301

Aoki, H; Hayashi, Y

A cooling system is described for an internal combustion engine comprising: a coolant jacket formed about structure of the engine subject to high heat flux; a first parameter sensor, the first parameter sensor being disposed in the coolant jacket and arranged to sense the temperature of the liquid coolant therein; a radiator in which coolant vapor is condensed to its liquid form, the radiator communicating with the coolant jacket via a vapor transfer conduit; a device associated with the radiator for varying the rate at which coolant vapor is condensed to liquid form in the radiator; means for returning liquid coolant from the radiator to the coolant jacket in a manner to maintain the level of liquid coolant in the coolant jacket above the structure subject to high heat flux and lower than the uppermost section of the coolant jacket so as to provide a vapor collection space above the surface of the liquid coolant; and a circuit which monitors the operation of the liquid coolant returning means and which issues a signal upon the operational characteristics of the liquid coolant returning means indicating a malfunction in the cooling system.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4632069
• OSTI ID: 7050301
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
BOILING
COOLANTS
COOLING SYSTEMS
ENERGY SYSTEMS
ENGINES
FAILURES
FLUIDS
HEAT ENGINES
HEAT EXCHANGERS
HEAT FLUX
INTERNAL COMBUSTION ENGINES
JACKETS
LIQUIDS
MONITORING
PHASE TRANSFORMATIONS
RADIATORS
SIGNALS
SPACE DEPENDENCE
TEMPERATURE MEASUREMENT
VAPOR CONDENSATION
VEHICLES