Low-bounce high-speed electromagnetic actuator

Abstract

The invention provides a low-bounce high-speed electromagnetic actuator. The low-bounce high-speed electromagnetic actuator comprises a shell, an iron core, sealing resin, coils, an armature, a fastening nut, a disc leaf spring, a spring gasket, a return spring, coil frameworks, a guide sleeve, an armature core and a leaf spring chamber, wherein a stepped through hole is formed in the center of the shell, and the iron core, the disc leaf spring and the fastening nut are arranged in the shell; the iron core is of a cylindrical structure, an annular groove is formed in the end face of the iron core, a blind hole is formed in the center of the iron core, each coil is wound on the corresponding coil framework and arranged in an iron core annular groove, the guide sleeve is embedded in the blind hole, and the return spring, the spring gasket and the armature core are installed in the guide sleeve; the armature core is of a cylindrical boss structure, the big end is matched with the guide sleeve, a stepped hole is formed in the center of the armature, and the small end of the armature core is sleeved with an armature sleeve; and the disc leaf spring is of a petal-shaped structure and ispositioned above the iron core, and the disc leaf spring and the iron core are tightly locked in the shell through the fastening nut. The low-bounce high-speed electromagnetic actuator has the advantages of high response, low bounce and long service life, and is suitable for an electric control fuel system of a diesel engine.

Description

technical field [0001] The invention relates to an electromagnetic actuator, in particular to a high-speed electromagnetic actuator for an electronically controlled fuel system of a diesel engine. Background technique [0002] With the development of diesel engine electronic control technology, the electronically controlled fuel injection system has gradually replaced the mechanical fuel injection control system and has become an important technology for diesel engine fuel injection control. At present, diesel engines are facing increasingly stringent emission regulations and lower fuel consumption requirements, and electronic control technology is an important means to meet these requirements. The high-speed electromagnetic actuator is an important component of the electronically controlled fuel injection system of the diesel engine. It can accurately and flexibly control the fuel injection timing, fuel injection quantity and fuel injection law through the opening and closi...

AI Technical Summary

Problems solved by technology

In order to meet the high-response characteristics of the electronically controlled fuel system, the armature of a conventional high-speed electromagnetic actuator will collide violently with the valve seat or the limit device at a high speed when it is engaged or released, resulting in large rebound and oscillation, which will affect the control. The actual opening or closing time of the valve will affect the control accuracy of fuel injection. At the same time, long-term work will cause damage to the valve seat or limit device, which will affect the consistency and life of its work.

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