Direct-pass inner guide gas spraying valve with floating valve base

A technology of gas injection valve and floating valve seat, applied in engine components, combustion engines, machines/engines, etc., can solve problems such as reverse leakage of injection valves, increase flow coefficient, increase intake air volume, and reduce flow loss Effect

Active Publication Date: 2017-09-05
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of severe engine operating conditions, the injection valve is prone to reverse leakage

Method used

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  • Direct-pass inner guide gas spraying valve with floating valve base
  • Direct-pass inner guide gas spraying valve with floating valve base
  • Direct-pass inner guide gas spraying valve with floating valve base

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] The present invention will be described in more detail below in conjunction with the accompanying drawings:

[0018] combine Figure 1-7 , figure 1 It is a schematic diagram of the overall structure of the straight-through inner-guided gas injection valve with a floating valve seat of the present invention, including four major parts: a valve body 1, an electromagnet 2, a valve core assembly 3, and a floating valve seat 4. The electromagnet 2 is connected with the valve body 1 through the upper thread. The electromagnet 2 is mainly composed of an iron core 5 and a coil 6 . There are annular grooves on both sides of the iron core 5 for arranging the main return spring 7, a straight groove with a certain depth is formed in the center of the iron core 5, and the guide pins 9 between the iron core 5 and the armature 10 are arranged inside the straight groove.

[0019] figure 2 The valve core assembly 3 is mainly composed of a guide pin 9 , an armature 10 , a spring sea...

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PUM

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Abstract

The invention provides a direct-pass inner guide gas spraying valve with a floating valve base. Through the floating valve base structure, the function of preventing reverse leakage caused by unbalanced internal and external pressure of the gas spraying valve is realized, and the working reliability of the gas spraying valve is guaranteed; the intake and guide process is realized through a direct-pass structure and a guide cavity structure; the control of a valve element, the control of a gas circuit and the gas spraying function are realized through control of an actuator; through matching of an inner guide structure, a pressure balance hole and a pressure balance groove, the perpendicularity of the valve element is guaranteed, the stable work of gas currents is realized, the work is reliable, and the high response speed is realized; through a mixed intake mode of direct intake by an axial main gas groove and intake by a peripheral gas feeding hole, high flow is realized, the gas spraying efficiency of an engine is effectively improved, meanwhile, the gas current interference can be prevented, and the gas circuit stability is realized; and through multiple ring belt structures between the valve element and the valve base, the surface sealing of the gas spraying valve is realized, and the reliability is high.

Description

technical field [0001] The invention relates to a gas injection valve, in particular to a gas injection valve of a natural gas engine gas system. Background technique [0002] With increasingly stringent ship emission regulations and rising fuel prices, gas engines and dual-fuel engines are playing an increasingly important role in the international market. As a key component of gas engine and dual-fuel engine, the performance of fuel injection system directly affects the power and emission performance of the engine. The gas injection valve is one of the core components of the gas-fuel electronically controlled multi-point injection gas engine with dual-fuel engine. It can realize the timing and quantitative phased gas supply and intake stratification of each cylinder, and its working performance is suitable for the gas engine or dual-fuel engine. Power and emissions have a very important impact. In the case of poor engine operating conditions, the injection valve is prone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02
CPCF02M21/0248F02M21/0254F02M21/026Y02T10/30
Inventor 范立云蒋顺豪杨立平马修真费红姿
Owner HARBIN ENG UNIV
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