Diesel Injector Fuel Injector 095000-0260 Denso Injector for Himo 500

Types of fuel injectors There are many types of fuel injectors, and most ships use closed fuel injectors. Closed injectors are mainly split-axis needle injectors and multi-hole injectors
There is a cylindrical needle valve inside the axial needle injector, which is matched with the inner hole of the needle valve. There is a pin at the end of the needle valve, which extends out of the needle valve body, and the pin reciprocates inside and outside the nozzle hole. The pintle injector has only one nozzle hole, and the hole diameter is generally 1~3 mm. Axial needle injectors are mainly used in combustion chambers that require low fuel injection pressure. Because of their large aperture and the reciprocating movement of the axial needle in the needle valve body during operation, it is beneficial to remove carbon deposits at the injection holes.
The multi-hole injector is divided into single-hole and multi-hole. Unlike the axial-needle injector, the end of the needle valve is tapered, which fits with the cone surface of the needle valve and does not protrude from the needle valve body. It acts as a seal and seal. guiding role. The number of nozzle holes of the multi-hole injector is generally 1 to 9, and the hole diameter is generally 0.2 to 0.8 mm. The multi-hole injector has higher injection pressure and better fuel atomization quality, and is mainly used in combustion chambers that require higher injection pressure, such as direct injection combustion chambers.
The fuel injector is one of the key parts of the marine diesel engine. The failure rate of the marine diesel engine can be effectively reduced by analyzing the failure of the fuel injector of the marine diesel engine and taking targeted maintenance measures. But not all diesel engine failures are caused by injectors. Therefore, we should carefully check the faults of marine diesel engines, and we should not disassemble the fuel injector hastily, otherwise it will destroy its processing and assembly accuracy, and the gain outweighs the gain.