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

Abstract

The invention provides a multi-permanent-magnet radial multi-coil combined high-speed bidirectional electromagnet. Including two electromagnets, armatures and valve stems; the electromagnets are radial multi-coil high-speed electromagnets, two radial multi-coil high-speed electromagnets share one armature and one valve stem, and the two radial multi-coil high-speed electromagnets are installed symmetrically , the armature is located between two radial multi-coil high-speed electromagnets, the valve stem passes through the through hole in the center of the two main magnetic poles, the armature is fixed with the valve stem; it also includes a small permanent magnet, which is concentric with the iron core Cylindrical ring, the flange protrudes from the bottom of the main magnetic pole or the auxiliary magnetic pole, and the small permanent magnet is embedded between the flange and the other magnetic pole. The magnetization direction of the small permanent magnet is radial radiation magnetization; it also includes the large permanent magnet, the large permanent magnet The magnet is located between the auxiliary magnetic poles of two radial multi-coil high-speed electromagnets, and its magnetization direction is axially inward. The invention has the characteristics of fast response speed, good heat dissipation and two-way movement, and is suitable for electronically controlled fuel oil systems of diesel engines.

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

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