Automotive non-pressure cooling system

Patent · Tue Jul 07 04:00:00 EDT 1987

OSTI ID:6256060

Skinner, A A

This patent describes a non-pressure automotive engine cooling system comprising: a radiator containing a liquid coolant, coupling hoses that intercouple the radiator to the engine, pump means associated with the engine for circulating coolant through the engine and radiator. The pump means has a suction side, a radiator cap sealed on the radiator, an expansion tank disposed in the engine compartment, vent means on the tank for venting the tank to atmosphere, a coupling tube disposed between the radiator below the radiator cap and the expansion tank to enable free flow of the coolant under expansion from the radiator to the expansion tank. The radiator cap seals the radiator but provides a substantially non-pressure and unimpeded fluid path from the radiator to the coupling tube, a return line coupled from the expansion tank to the suction side of the pump means. The radiator has a gooseneck with the radiator cap sealably engaged with the gooseneck, an outlet port from the top of the radiator to which the coupling tube is connected. The outlet port is continuously open and unblocked by the radiator cap to provide free fluid flow from the radiator to the expansion tank over the entire operating temperature range, the radiator cap sealing only at the top of the gooseneck, and means for supporting the expansion tank at a position at a height corresponding to the top of the radiator. Under normal temperature operating conditions, the liquid level line is substantially the same in both the radiator and the expansion tank.

• Assignee: NOV; NOV-87-072108; EDB-87-148443
• Patent Number(s): US 4677943
• OSTI ID: 6256060
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
CONTROL
COOLANTS
COOLING SYSTEMS
ENERGY SYSTEMS
ENGINES
EXPANSION
FLUID FLOW
HEAT EXCHANGERS
PRESSURE CONTROL
PUMPS
RADIATORS
SEALS
TEMPERATURE GRADIENTS
VEHICLES