| 摘要 |
In an engine cooling system (10), an upper coolant chamber (31) and a lower coolant chamber (24) of a typical engine, such as an internal combustion engine, are formed adjacent to the heat rejecting components of the engine and are hermetically sealed to prevent exposure of coolant within the chambers to the engine's ambient atmosphere. The coolant is anhydrous, boilable liquid coolant having a saturation temperature higher than that of water. Thermally-expanded coolant, non-condensable gas, and trace amounts of vapor, if any, are received with a hermeticallY-sealed accumulator (78) coupled in fluid communication with a relatively low-pressure area of the coolant chambers (24, 31), and the accumulator (78) defines at least one chamber (86, 88, 90), which may form a liquid-free space (88). The accumulator (78) defines a predetermined volume (V) selected to maintain a predetermined pressure limit.
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