초록 ▼

A hermetically sealed low pressure, low temperature cooling system for internal combustion engines which include a thermostat that operates at a predetermined temperature, typically 195°F. Thermostatic control of engine operation temperature is maintained at or in relatively close proximity to this

A hermetically sealed low pressure, low temperature cooling system for internal combustion engines which include a thermostat that operates at a predetermined temperature, typically 195°F. Thermostatic control of engine operation temperature is maintained at or in relatively close proximity to this predetermined temperature thereby eliminating overheating and corrosive deterioration of the cooling system. Free coolant flow between the radiator and a small expansion reservoir is maintained at all times with the expansion reservoir being integral with and located on the top portion of the radiator and to the side of a radiator filling neck also located thereat. The filling neck is provided with a transparent viewing cap so that the level of liquid coolant can be observed at all times.

대표청구항 ▼

A hermetically sealed, relatively low pressure cooling system for internal combustion engines including a thermostat which opens at a predetermined engine operating temperature, comprising: a hermetically sealed radiator having a filling neck located in the top portion of the radiator, a nonpressuri

A hermetically sealed, relatively low pressure cooling system for internal combustion engines including a thermostat which opens at a predetermined engine operating temperature, comprising: a hermetically sealed radiator having a filling neck located in the top portion of the radiator, a nonpressurized cap in sealed relationship with said filling neck; a small expansion reservoir for liquid coolant integral with and connected in hermetically sealed relationship with the top portion of the radiator forming a composite structure thereby, said reservoir having coolant inlet means which projects downwardly into the radiator so that coolant will reside in the lower portion of the expansion chamber when said radiator is filled with coolant and having a closed dead air space in the upper portion of the expansion reservoir wherein liquid coolant due to engine heating during operation expands and flows freely from the radiator upwardly and into said expansion reservoir causing a relatively low pressure to be built up in the dead air space behind the coolant and subsequently returning from the reservoir into the radiator under the influence of the relatively low pressure in the closed dead air space to maintain the cooling system full at a full level at all times, whereby pressure in the hermetically sealed cooling system is maintained at a relatively low value compared to conventional high pressure systems which operate at or near 15 psi, said low pressure causing the boiling point of the coolant to remain at a relatively low value, permitting said thermostat of the engine to thereby control engine temperature over substantially the full range of engine operation and thus causing said engine to operate at a temperature at or in relatively close proximity to said predetermined temperature of the thermostat.