Multi-permanent magnet and radial multi-coil combined high-speed bidirectional electromagnet

Abstract

The invention provides a multi-permanent magnet and radial multi-coil combined high-speed bidirectional electromagnet, which comprises two electromagnets, an armature, a valve rod, small permanent magnets and large permanent magnets, wherein the electromagnets are radial multi-coil high-speed electromagnets; the two radial multi-coil high-speed electromagnets share one armature and one valve rod, and are symmetrically arranged; the armature is located between the two radial multi-coil high-speed electromagnets; the valve rod is arranged in through holes at the centers of two main magnetic poles in a penetrating manner; the armature and the valve rod are fixed together; the small permanent magnets are cylindrical rings which are concentric with cores; flanges extend outside at the bottom parts of the main magnetic poles or secondary magnetic poles; each small permanent magnet is inlaid between each flange and the other magnetic pole; the magnetizing directions of the small permanent magnets are radial radiation magnetizing directions; the large permanent magnets are located between the secondary magnetic poles of the two radial multi-coil high-speed electromagnets; and the magnetizing directions of the large permanent magnets are inward along the axial direction. The multi-permanent magnet and radial multi-coil combined high-speed bidirectional electromagnet has the characteristic of high response speed, good heat dissipation performance and bidirectional motion, and is suitable for an electrically controlled fuel system for a diesel engine.

Description

technical field [0001] The invention relates to an electromagnet, in particular to a high-speed electromagnet for an electronically controlled fuel system of a diesel engine. Background technique [0002] Due to the increasingly stringent emission limit indicators for diesel engines and the need to further reduce fuel consumption in recent years, electronic control technology has been widely used in fuel systems. With the development of diesel engine electronic control technology, the digital control of fuel injection system has also been realized, which effectively increases the fuel injection pressure and improves the economy of the engine. An electromagnet whose response speed can reach milliseconds can be called a high-speed electromagnet. The high-speed and powerful electromagnet is an important part connecting the electronic control unit of the fuel system and the fuel injection device. Its fast response characteristics directly affect the control accuracy of the syst...

AI Technical Summary

Problems solved by technology

[0003] The traditional E-type electromagnet adopts the axial winding method of a single multi-turn coil, and the coil inductance is relatively large, which makes the rising speed and decaying speed of the current slow down, and the lack of effective cooling measures directly affects the magnetic permeability of the magnetic material. , which affects the response speed of the electromagnet

Images