Injector nozzle valve

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

Patent

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Details

F02M 61/20 (2006.01) F02M 61/18 (2006.01)

Patent

CA 2230103

The conical nozzle valve seat (30) of a diesel injection nozzle (2) is shaped to form a notch (35) extending down from an annular upper notch (35) boundary on the conical bottom face/seat (30) of the valve. In the fully raised position of the valve, the upper notch (35) boundary is above the imaginary intersection between the conical bottom face (30) of the valve and an imaginary conical surface perpendicular to the conical bottom face (30) and containing the annular entry edge of the nozzle sac. The minimum cross- sectional flow area of the valve is greater than that associated with an otherwise identical valve that does not have such annular notching (35).

Le siège conique (30) d'un clapet d'injecteur (2) de moteur diesel est conformé de manière à présenter un évidement (35) s'étendant vers le bas depuis le bord supérieur de forme annulaire de cet évidement sur le siège (30) formant la face inférieure conique du clapet. Lorsque le clapet est en position haute maximum, le rebord supérieur de l'évidement (35) se situe au-dessus du point imaginaire d'intersection entre la face inférieure conique (30) du clapet et une surface conique imaginaire perpendiculaire à cette face intérieure conique (30) et englobant le rebord annulaire définissant l'entrée du diffuseur. On obtient grâce à cet évidement annulaire (35) une section de passage minimale qui est plus importante que celle d'un clapet identique ne présentant pas un tel évidement (35).

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