Valve train device for engine

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

Patent

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Details

F01L 13/00 (2006.01) F01L 1/14 (2006.01) F01L 1/18 (2006.01) F01L 1/26 (2006.01)

Patent

CA 2486440

An engine valve driver adapted to openingly and closingly drive a valve that opens and closes the valve opening in a combustion chamber by rocking a rocker arm (11) rockably supported by a rocker shaft (14), comprising a rocking member (9) driven for rocking by a rockably disposed drive means, an intermediate rocker member (10) disposed between a rocking cam surface (9b) formed on the rocking member (9) and a rocker pressing surface (11b) formed on the rocker arm (11) and adapted to transmit the motion of the rocking cam surface (9b) to the rocker pressing surface (11b), and an intermediate rocker moving mechanism for moving a point of contact between the rocking cam surface (9b) of the intermediate rocker member (10) and the rocker pressing surface (11b) by turning the rocker shaft (14), thereby making it possible to continuously adjust the valve opening period and the amount of lift.

L'invention concerne un dispositif d'entraînement de soupape conçu pour entraîner en ouverture et en fermeture une soupape et permettant d'ouvrir et de fermer l'ouverture de soupape dans une chambre de combustion par culbutage d'un bras culbuteur (11) supporté culbutant par un arbre culbuteur (14). Ce dispositif comprend un élément de culbutage (9) entraîné en vue d'un culbutage par un organe d'entraînement disposé de manière culbutante, un élément de culbutage intermédiaire (10) disposé entre une surface de came de culbutage (9b) formée sur l'élément de culbutage (9) et une surface de pression de culbutage (11b) formée sur le bras culbuteur (11) et conçue pour transmettre le mouvement de la surface de came de culbutage (9b) à la surface de pression de culbutage (11b), ainsi qu'un mécanisme de déplacement de culbutage intermédiaire destiné à déplacer un point de contact entre la surface de came de culbutage (9b) de l'élément de culbutage intermédiaire (10) et la surface de pression de culbutage (11b) par rotation de l'arbre culbuteur (14), ce qui permet d'ajuster continuellement la période d'ouverture de soupape et la quantité de levée.

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