Valve return device and engine equipped with such a device

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

Patent

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Details

F01L 9/02 (2006.01) F01L 1/12 (2006.01) F01L 1/46 (2006.01) F01L 3/10 (2006.01)

Patent

CA 2500689

L'invention concerne un dispositif de rappel (1) d'une soupape (2) d'un moteur à combustion interne, comportant : - un piston (10) solidaire de ladite soupape (2), monté coulissant dans un cylindre (11), - une alimentation (12) en fluide sous pression raccordée audit cylindre par un canal d'alimentation (13), et - un clapet de surpression (15) raccordé audit cylindre (11) par un canal d'évacuation (16), agencé pour limiter la pression (P) régnant dans le cylindre (11) à une pression maximale (P M) prédéterminée, et - des moyens (25, 17, 24) pour réguler la pression maximale (P M) en fonction de la pression d'alimentation suivant une loi de type affine. L'invention concerne également un moteur à combustion interne équipé d'un tel dispositif (1).

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