Hermetically-sealed engine cooling system and related method...

F - Mech Eng,Light,Heat,Weapons – 01 – P

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F01P 9/02 (2006.01) F01P 3/22 (2006.01) F01P 11/02 (2006.01) F01P 3/00 (2006.01) F01P 7/08 (2006.01)

Patent

CA 2373350

In a heat transfer system (10), an upper coolant chamber (31) and a lower coolant chamber (24) of an engine are hermetically sealed. The heat transfer liquid has a saturation temperature higher than that of water. The liquid is circulated by a pump (42) so that it is vaporized in the engine and condenses in a heat rejecting component such as a radiator (54). The overflow liquid and gases are received within a hermetically-sealed accumulator (78) coupled to a relatively low-pressure area of the chambers (24, 31). The accumulator (78) defines at least one chamber (86, 88, 90), which may form a liquid free space (88), for receiving the gases. The accumulator (78) may be of a variable volume adapted to maintain the pressure within a predetermined limit.

Dans un système (10) de transfert thermique, la chambre (31) de refroidissement supérieure et la chambre (24) de refroidissement inférieure d'un moteur sont hermétiques. Le liquide de transfert thermique a une température de saturation supérieure à celle de l'eau. Le liquide circule grâce à une pompe (42) de façon à être vaporisé dans le moteur, et se condense dans un composant rediffusant la chaleur tel qu'un radiateur (54). Le liquide de trop-plein et les gaz arrivent dans un accumulateur (78) hermétique couplé à une zone à relativement basse pression des chambres (24, 31). L'accumulateur (78) forme au moins une chambre (86, 88, 90) pouvant constituer un espace (88) exempte de liquide pour recevoir les gaz. L'accumulateur (78) peut être d'un volume variable adapté pour maintenir la pression dans une limite prédéterminée.

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