Injector nozzle for e.g. diesel engine, has main holes for injecting fuel and arranged at tip of nozzle, and secondary holes arranged between two main holes, where one secondary hole causes small penetration depth than one of main holes

摘要

The nozzle (10) has a set of main holes (H1-H4) for injecting fuel into a cylinder and arranged at the cone-shaped tip of the nozzle, where the nozzle is arranged along a symmetrical axis of the cylinder. Secondary holes (S1-S4) are arranged between two main holes for injecting the fuel. The secondary hole (S1) causes a penetration depth smaller than one of the main holes. The middle point of the main holes is arranged on a circumference of the tip of the nozzle, and the middle point of the secondary holes is arranged on another circumference.