Cooling system for automotive engine or the like

Patent · Tue Mar 17 04:00:00 EST 1987

OSTI ID:6619272

Hayashi, Y; Tamazawa, T

This patent describes an internal combustion chamber: a radiator; a coolant jacket in which coolant is boiled and the vapor produced fed to the radiator; a first sensor for sensing a first engine operation parameter the first engine operation parameter being other than the temperature or pressure in either of the coolant jacket or the radiator; a device responsive to the first sensor for varying the rate of condensation of the vapor in the radiator. The device is responsive to the first sensor in a manner to selectively control the temperature of the coolant in the coolant jacket toward one of a first and second levels; and means for preventing air entering the coolant jacket when sub-atmospheric pressures prevail therein; wherein the engine includes a cylinder block and a cylinder head detachably mounted on the cylinder block to define the combustion chamber; the coolant jacket is defined by cavities formed in the cylinder head and the cylinder block, and the preventing means takes the form of a seal disposed between the cylinder head and cylinder block, the seal preventing the invasion of air between the cylinder head and the cylinder block into the cavities when the subatmospheric pressure prevails therein.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4649869
• OSTI ID: 6619272
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
BOILING
COMBUSTION CHAMBERS
CONTROL
CONTROL SYSTEMS
COOLANTS
COOLING SYSTEMS
ENERGY SYSTEMS
ENGINES
HEAT ENGINES
HEAT EXCHANGERS
INTERNAL COMBUSTION ENGINES
OPERATION
PHASE TRANSFORMATIONS
PRESSURE CONTROL
RADIATORS
TEMPERATURE CONTROL
VEHICLES