A Low Bounce High Speed ​​Electromagnetic Actuator

Abstract

The present invention is to provide a low-bounce high-speed electromagnetic actuator, which includes a shell, an iron core, a sealing resin, a coil, an armature, a fastening nut, a disc leaf spring, a spring washer, a return spring, a coil skeleton, a guide sleeve, Armature core, leaf spring chamber; there is a stepped through hole in the center of the shell, and an iron core, a disc leaf spring and a fastening nut are built in it; the iron core is a cylindrical structure with a ring groove on its end surface and a blind hole in the center. The coil is wound on the bobbin and arranged in the ring groove of the iron core. A guide sleeve is embedded in the blind hole, and a return spring, a spring washer and an armature core are installed in the guide sleeve; the armature core is a cylindrical boss structure, and the big end is connected to the The guide sleeve is matched, there is a stepped hole in the center of the armature, and the armature is sleeved on the small end of the armature core; the disc leaf spring is a petal-shaped structure, located above the iron core, and is locked together with the iron core in the housing by fastening nuts . The invention has the characteristics of high response, low rebound and long service life, and is suitable for the electric control fuel system of the 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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