Integral engine valve cover and fuel pump

Details Integral engine valve cover and fuel pump Integral engine valve cover and fuel pump

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 61/16 (2006.01) F01L 1/00 (2006.01) F02F 7/00 (2006.01) F02M 37/04 (2006.01) F02M 59/44 (2006.01) F02B 1/04 (2006.01)

Patent

CA 2130734

A fuel pump body has a chamber with one wall formed by an external diaphragm having a stem connected thereto. The fuel pump body is attached to the outside of a valve cover for a gasoline engine and the valve cover has a depression that forms an enclosure for the diaphragm. The stem passes through an aperture in the valve cover and connects to a lever pivotally attached to the underside of the valve cover. The lever engages the valve rocker arm of the engine and produces reciprocal movement of the stem and diaphragm as the rocker arm moves. The reciprocal movement of the diaphragm alternately draws fuel into the chamber through the inlet and that expels fuel through the outlet.

Le corps d'une pompe d'injection comporte une chambre dont une paroi est formée par un diaphragme extérieur raccordé à une tige. Le corps de pompe est fixé à l'extérieur du couvercle des soupapes d'un moteur à essence, ledit couvercle comportant une dépression dans laquelle se loge le diaphragme. La tige passe par une ouverture pratiquée dans le couvercle des soupapes pour se connecter à un levier pivotant fixé à la sous-face du couvercle des soupapes. Le levier entraîne le culbuteur de soupape du moteur et produit un mouvement réciproque de la tige et du diaphragme, qui coïncide avec le déplacement du culbuteur. Le mouvement réciproque du diaphragme aspire alternativement de l'essence dans la chambre à travers l'admission, ce qui a pour effet de chasser l'essence par la sortie.

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