Novel vacuum degree regulator

Abstract

The invention relates to a novel vacuum degree regulator. A flange rabbet is arranged at the front end of a magnet yoke case, the bottom end of a cover cap and the edge of a rubber film are arranged in the flange rabbet, the back end of a magnet yoke tube is provided with a reduced opening, the back end of the magnet yoke case is inserted into the bottom end from the front end of the magnet yoke tube in a matched way, and is formed into a whole body with an installation hoop arranged on the outer peripheral surface of the magnet yoke tube, a coil framework is arranged in the magnet yoke case, an upper magnetic pole component and a lower magnetic pole component are respectively arranged at the front end of the magnet yoke case and the back end of the magnet yoke tube, and the back end of the magnet yoke tube is provided with a coil lead socket. The invention has the advantages that on the premise that the external installation dimension and the body structure of an original product are not changed, the invention is optimized and changed into the application of an ordinary punching and stretching forming process and a mature little-dust or dustless forming process, so the main technical quality index of the whole machine product is more stable and reliable, the process method and structure is simple and convenient, and the effect of reducing the cost of mass production can be reached.

Description

technical field [0001] The invention relates to a novel vacuum degree regulator, which is a control part of a pneumatic waste gas recirculation system of a diesel engine. Background technique [0002] With the advancement of science and technology and the continuous improvement of living standards, people's requirements for the living environment continue to increase. Therefore, one of the main causes of environmental pollution - the discharge of nitrogen, oxygen, carbon and oxygen compounds and tiny particles produced during the work of internal combustion engines Various control standards have to be put forward more and more stringently. In order to compound these standards, scientists have added quite a lot of control functions to the engine to reduce the pollution of the exhaust gas to the environment. One of the important control functions is the figure 1 The computer-controlled pneumatic EGR (exhaust gas recirculation) system shown has four major parts: [0003] ①The...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a new type of vacuum regulator to solve the problem that the structure of existing products needs to use precision stamping and stretching, medium and high precision machining and machine tools with high mold clamping injection pressure; equipped with high precision In the structure mold with complex three-dimensional space and multi-angle direction mold clamping movement, each sub-part is assembled, so that the main part of the product is formed by one-time injection molding of engineering plastic PBT. The problem is that the structure is complex, the process is difficult, there are many consumables, and the cost is high.

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