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Linear electromagnetic driving plunger pump

A linear electromagnetic, driving column technology, applied in the direction of engine components, machines/engines, charging systems, etc., can solve the problems of large output flow pulsation, unreliable operation of electromagnetic parts, unstable pressure, etc., and achieve small total pressure fluctuations. , Improve reliability, reduce the effect of working cycle

Inactive Publication Date: 2012-12-05
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a linear electromagnetic drive plunger pump, which solves the problems of large output flow pulsation, unstable pressure and unreliable operation of the electromagnetic part of the existing electromagnetic plunger pump.

Method used

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 2 As shown, the embodiment of the present invention includes a pump body 1, an upper cover 13, a lower cover 22, an electromagnetic coil 16, an armature 20 and a return spring 19, and also has an inlet joint 2, an outlet joint 5, a valve core 9, and a support tube 10 , diaphragm 14, nut 11, overflow port joint 15, plunger rod 21, discharge port joint 23;

[0041] Such as image 3As shown, the pump body 1 is a rotating body, its upper and lower ends respectively have external threads, the upper end surface of the pump body has a cavity 1-1 with an inverted convex cross section, and the lower end surface of the pump body has a concave cavity 1-1 with a cross section. 2. The center hole of the inverted convex cavity has an internal thread, the center hole of the inverted convex cavity and the center of the concave cavity are connec...

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Abstract

The invention discloses a linear electromagnetic driving plunger pump, belongs to volumetric fluid conveying pumps and is applicable to pressure pumping, pressure accumulation, pressure stabilization and overflow protection of the fuel of an electronic fuel injection system of an internal combustion engine. The linear electromagnetic driving plunger pump comprises a pump body, an upper cover, a lower cover, an electromagnetic coil, an armature, a return spring, an inlet joint, an outlet joint, a sleeve, a valve core, a supporting pipe, a diaphragm, a nut, an overflow port joint, a plunger rod and a leakage flow port joint. Under the action of electromagnetic force and spring force, the plunger rod reciprocates, gasoline pumping is realized, the total pressure of a pressure accumulating cavity is low in fluctuation, the linear electromagnetic driving plunger pump has pressure accumulation, pressure stabilization and overflow functions, accurate control can be realized, and an operating period of an electromagnet can be shortened, so the reliability is improved. The linear electromagnetic driving plunger pump which serves as an oil sprayer is applicable to an internal combustion engine system, and great significance is provided for realization of accurate and reliable oil spraying control over the internal combustion engine.

Description

technical field [0001] The invention belongs to volumetric fluid conveying pumps, in particular to a linear electromagnetically driven plunger pump, which is used for pumping, accumulating, stabilizing and overflowing protection of fuel in an electric fuel injection system of an internal combustion engine. Background technique [0002] In the field of fluid transmission control, the plunger pump has the advantages of compact structure, high pressure, high specific power, high efficiency, long life, etc., and is a common structural form of the pump. However, most plunger pumps generally adopt the method of rotary drive, the transmission chain is long, and there are many links of energy loss, and the processing and assembly of the pump is complicated, with high precision and high technical threshold. In recent years, a linear electromagnetic drive plunger pump has appeared in the academic circles, which not only reduces the intermediate links, improves the transmission efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/04
Inventor 余祖耀李维嘉娄素华温江涛朱玉泉李锦云
Owner HUAZHONG UNIV OF SCI & TECH
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