Electronically controlled gasoline injector

Abstract

An electronically controlled gasoline injector, the main components include a casing, a valve core, an orifice plate, a valve seat, a magnetic guide sleeve, a tube core, an end cover, a guide sleeve, an electromagnetic coil, a degaussing structure, an oil inlet pipe, and a spring. The guide sleeve with the valve core is installed at one end of the shell, the inner hole of the valve core is equipped with a spring, one end of the guide sleeve is sequentially equipped with an orifice plate and valve seat in the axial direction, and the other end of the shell is sequentially equipped with a belt line The electromagnetic coil of the frame and the magnetic conductive structure composed of the end cover and the tube core, the inner hole of one end of the tube core is equipped with a hollow open elastic pin, and the end of the end is welded with one end of the oil inlet pipe to form an oil inlet channel, and the boss of the end cover The outer edge and the inner hole of the shell are fixedly connected by welding, and the magnetic conductive sleeve and one end of the magnetic isolation sleeve made of non-magnetized metal material are coaxially butt welded and installed in the through hole of the end cover. The lower end of the magnetic isolation sleeve and the guide sleeve are fixedly connected by welding, and the degaussing structure is located at the adjacent end of the tube core and the valve core. The fuel injector has good performance consistency, low processing difficulty and low cost.

Description

Technical field: [0001] The invention relates to a fuel injector used in an electronically controlled gasoline engine fuel injection system, in particular to an electronically controlled gasoline injector suitable for a common rail electronically controlled gasoline engine fuel supply system. Background technique: [0002] Electronically controlled gasoline injectors are important components of modern gasoline engines. The currently used electronically controlled gasoline injectors for gasoline engines have the characteristics of accurate fuel injection and fast response to electrical excitation signals. However, the processing conditions of these gasoline injectors require High, difficult, high cost, for this reason the applicant applied for an electronically controlled gasoline injector with good product performance consistency, low processing conditions, low processing difficulty and low cost in 2006 (patent application No. 2006200960153), after further research, the appl...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to further improve the electronically controlled gasoline injector of the applicant whose patent application number is: 2006200960153, and provide a " Electronically controlled gasoline injector" to solve the shortcomings of some parts of the existing electronically controlled gasoline injector, such as the structure and processing technology are not simple enough, the amount of materials is large, etc.

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