Electromagnetic injector and its electromagnetic valve control assembly

Abstract

The invention relates to a solenoid valve control assembly, comprising a solenoid housing made of different materials and a sleeve part, the hardness of the sleeve part is higher than that of the electromagnetic housing, and the sleeve part is coaxially is firmly installed into the electromagnetic housing; the electromagnetic coil is accommodated in the electromagnetic housing wall; the movable member and the return spring are accommodated in the inner space defined by the inner surface of the sleeve member; and a connector pin partially embedded in the wall of the electromagnetic housing and electrically connected to the electromagnetic coil, wherein the movable member generates a magnetic force on the electromagnetic coil when the electromagnetic coil is energized Under the action of the return spring, it moves in the first direction against the action of the return spring. When the electromagnetic coil is de-energized, the movable member moves in the opposite direction to the first direction under the action of the return spring. Move in the second direction of . The invention also relates to a solenoid fuel injector comprising such a solenoid valve control assembly.

Description

technical field [0001] The invention relates to an electromagnetic fuel injector, in particular to a solenoid valve control assembly of the electromagnetic fuel injector. Electromagnetic injectors can be used in common rail injection systems of internal combustion engines (such as diesel engines). Background technique [0002] Electromagnetic injectors are used to inject high-pressure fuel into the combustion chamber of internal combustion engines, and are widely used in common rail injection systems due to their precise control and high-speed response to fuel injection. [0003] figure 1 is a longitudinal sectional view of a conventional electromagnetic injector 100 in the prior art. [0004] The solenoid injector 100 includes a solenoid valve control assembly 10 at a first end 102 thereof for controlling a needle at a second end 104 of the solenoid injector 100 via an armature 50, a control chamber 65 and a needle control piston 70. The opening and closing of valve 80. ...

AI Technical Summary

Problems solved by technology

However, the carbonization process hardens all the outer surfaces of the electromagnetic housing 12, so that the subsequent welding process is adversely affected, there is a high risk of cracks on the inner surface of the first part 38a, and moreover, the distribution of the magnetic field lines is also affected

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