High-voltage common rail high-speed electromagnet tailstock structure

Abstract

High-voltage common rail high-speed electromagnet tailstock structure includes a tailstock body, the tailstock body comprises a base provided with a central through hole, an inserting sleeve, a sealing ring; an upper opening of the central through hole is provided with an annular step for assembling the sealing ring, a ring seat matched with the annular step is arranged on the insertion sleeve, the base and the insertion sleeve are press-fitted into one body through interference fit, the sealing ring is fitted between the annular step and the ring seat, and the sealing ring realizes the sealing of the assembly gap between the base and the insertion sleeve. One embodiment is that the base is made of an aluminum alloy material. The invention adopts the split assembly structure, reduces the material and processing cost, improves the processing efficiency, and solves the problem of high production cost of the high-speed electromagnet tail base with the original integral structure.

Description

technical field [0001] The invention relates to an electromagnet structure, in particular to a tailstock structure of a high-speed electromagnet used for controlling an injector in a high-pressure common rail diesel electric injection engine. Background technique [0002] The implementation of the country's low-emission policy for the automobile industry has led to the upgrading of engine technology, and the electronically controlled fuel injection technology of high-pressure common rail diesel engines has become increasingly mature and popularized in China. The high-speed electromagnet is the key control actuator of the fuel injector in the electronically controlled fuel injection system of the diesel engine. Its function is to execute the ECU command of the system, control the closing of the pump valve, and complete the precise fuel injection. The electromagnet is required to have the characteristics of fast response speed, low eddy current loss, large electromagnetic attr...

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Problems solved by technology

[0003] like figure 1 As shown, the electromagnet tailstock in the prior art is an integral part, which is made of integral stainless steel bar material, and is processed by multiple processes such as turning and drilling. Since the structural part (tailstock) is a ⊥-shaped circular truncated structure , the selected material must meet the requirements of the bar with a diameter greater than its maximum structural size, resulting in excessive machining allowance, low material utilization, serious equipment and tool loss, large energy consumption, long processing cycle, and high working hours. The production cost of structural parts (tailstock) remains high, and the corresponding electromagnet products lack price competitiveness in the market

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