Hydraulic coupler of instant response type common-rail oil injector

A technology of hydraulic coupling and common rail injector, which is applied in the direction of machines/engines, fuel injection devices, engine components, etc., can solve the problems of low service life of common rail injectors, achieve easy processing, reduce weight, The effect of improving the service life

Inactive Publication Date: 2015-07-01
常州博瑞油泵油嘴有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a hydraulic coupler of an instant response type common rail injector, which can solve the problem that the service life of the existing common rail injector is not high

Method used

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  • Hydraulic coupler of instant response type common-rail oil injector
  • Hydraulic coupler of instant response type common-rail oil injector
  • Hydraulic coupler of instant response type common-rail oil injector

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Embodiment 1

[0023] Embodiment 1: A kind of high-pressure common rail fuel injector without static leakage, such as Figure 4 ~ Figure 6As shown, it includes electromagnetic injection control valve 1, injector body 2, valve sleeve 3, valve stem return spring 4, spring seat 5, valve stem 6, coupling spring 7, coupling sleeve 8 and hydraulic coupling 9, The electromagnetic injection control valve 1 is composed of an electromagnet 11, an electromagnet tight cap 12, an electromagnet spring 13, an armature rod 14, an armature 15, an armature return spring 16, a guide valve seat body 17a, a valve sleeve pressing cap 17b, and an adjustment washer 18 and the control ball assembly 19, the electromagnet spring 13 is installed in the center hole of the electromagnet 11, the upper section of the armature rod 14 is set in the inner hole of the electromagnet spring 13, and the upper guide section of the armature rod 14 is installed in a clearance fit manner In the center hole of the electromagnet 11, th...

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Abstract

The invention discloses a hydraulic coupler of an instant response type common-rail oil injector. According to the hydraulic coupler of the instant response type common-rail oil injector, a precise matching hole used for installing a guide column at the upper end of a valve needle is formed in the lower end face of a valve rod, in this way, the sealing performance of a transformation cavity is guaranteed, the opening and closing response speed of the valve needle is increased, and the use stability of the valve needle is improved; if a damp reduction groove is additionally formed in the guide column at the upper end of the valve needle, the opening and closing response sensitivity of the valve needle can be further improved, the service life of the common-rail oil injector can be prolonged, the opening and closing response speed can be increased, the product structure can be simplified, the manufacturing technique is optimized, and production cost is reduced.

Description

Technical field: [0001] The invention relates to a diesel engine high-pressure common rail technology, in particular to a high-pressure common rail fuel injector. Background technique: [0002] With the progress of society, the requirements for energy saving and emission reduction of diesel engines are getting higher and higher; this puts forward new requirements for the fuel supply system of diesel engines, requiring them to provide higher pressure fuel with more accurate timing and injection volume; With the development and improvement of high-pressure common rail technology for diesel engines, the common rail system has become the only fuel supply system that can meet the above three requirements at the same time. [0003] The common rail injector is a key component of the common rail system. Its working principle is to control the opening and closing of the high-speed solenoid valve through the electronic control unit (ECU), and inject high-pressure fuel into the combust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/10F02M61/16
Inventor 刘义亭庄福如汤曌谈旭扬朱小立吴永胜
Owner 常州博瑞油泵油嘴有限公司
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