Egr valve apparatus

F - Mech Eng,Light,Heat,Weapons – 02 – M

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F02M 25/07 (2006.01)

Patent

CA 2407720

An EGR valve apparatus (16) regulates the amount of exhaust gas recirculated in an EGR system. The EGR valves (28) are opened or closed by a rotatable shaft (30) which is actuated by a motor (14). Alternatively, the valves can be balanced on the shaft, the valves moving in opposing direction during rotation. An inline poppet can be employed to overcome pressure in the system prior to movement of the valves. In another alternative embodiment, the motor rotates threaded shaft to move a pintle towards and away from an orifice.

Cet appareil de soupape de recirculation des gaz d'échappement (RGE) (16) régule la quantité de gaz d'échappement recirculé dans un système RGE. Les soupapes RGE (28) sont ouvertes ou fermées par un arbre rotatif (30) activé par un moteur (14). Dans un mode de réalisation différent, ces soupapes peuvent être équilibrées sur l'arbre, les soupapes se déplaçant dans des directions opposées pendant la rotation. Un champignon incorporé peut être utilisé pour vaincre la pression dans le système avant la mise en mouvement des soupapes. Dans un mode de réalisation différent, le moteur fait tourner l'arbre fileté afin de déplacer un pivot en direction d'un orifice et loin de ce dernier.

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