Radial multi-coil combined high-speed bidirectional electromagnet

Abstract

The invention provides a radial multi-coil combined high-speed bidirectional electromagnet. It includes two electromagnets, armature and valve stem; the electromagnet is a radial multi-coil high-speed electromagnet, the iron core is composed of a main magnetic pole and a secondary magnetic pole, the main magnetic pole is a cylinder, and the secondary magnetic pole is a cylinder with a through hole in the center The main magnetic pole is located in the through hole of the auxiliary magnetic pole, and the outer shell is sleeved outside the main magnetic pole. The coil inner core is formed between the fan-shaped through holes, the coil is radially wound on the coil inner core, and a through hole is opened in the center of the main magnetic pole; Between the electromagnets, the valve stem passes through the through holes in the centers of the two main magnetic poles, and the armature and the valve stem are fixed. The invention has the characteristics of fast response speed, small driving current, good heat dissipation and bidirectional movement, and is suitable for diesel electric control fuel system.

Description

Technical field [0001] The invention relates to an electromagnet, in particular to a high-speed electromagnet for diesel electronically controlled fuel system. Background technique [0002] With the development of diesel engine electronic control technology, the electronic control of fuel injection system has become an important technology to meet increasingly stringent emission regulations. Regardless of the electronically controlled pump nozzles, unit pumps, distribution pumps, or high-pressure common rail electronically controlled fuel injection systems that are currently developing rapidly, high-speed solenoids are key components to ensure their normal operation, as the fuel system electronic control unit and The interface of the fuel injection device realizes precise control of fuel injection timing and fuel injection quantity by adjusting the closing time and length of the armature. Its application realizes the digital control of fuel injection. [0003] An electromagnet wit...

AI Technical Summary

Problems solved by technology

The traditional E-type electromagnet lacks effective heat exchange measures, which leads to a relatively large temperature rise of the coil, which in turn affects the magnetic permeability of the magnetic material, making the response speed of the electromagnet slower

In order to reduce the operating temperature of the electromagnet, a small driving current is generally used, which in turn leads to a reduction in the electromagnetic force.

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