INJECTOR NOZZLE VALVE

摘要

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).