Bypass type outer guiding gas injection valve with floating valve seat

A technology of gas injection valve and floating valve seat, which is used in engine components, combustion engines, machines/engines, etc., can solve problems such as affecting the normal use of the engine, engine performance, reverse leakage of the injection valve, insufficient gas supply, etc., to avoid Air flow interference, the effect of realizing the stability of the gas path, ensuring reliability and safety

Active Publication Date: 2017-09-15
HARBIN ENG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, natural gas engines often have insufficient gas supply when working under full working conditions, resulting in unstable speed when the engine is running under full working conditions, which will be

Method used

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  • Bypass type outer guiding gas injection valve with floating valve seat
  • Bypass type outer guiding gas injection valve with floating valve seat
  • Bypass type outer guiding gas injection valve with floating valve seat

Examples

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Embodiment Construction

[0017] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0018] combine Figure 1-7 , figure 1 It is a schematic diagram of the overall structure of the bypass type externally guided gas injection valve with a floating valve seat of the present invention, which is mainly composed of an electromagnet 1, a coil 2, a return spring 3, a valve core assembly 5, a valve body 6 and a floating valve seat 7. The electromagnet 1 is fixed on the valve body 6 by the fixing bolt 8, the coil 2 is wound in the ring groove inside the electromagnet 1, and the valve core assembly 5 and the floating valve seat 7 are arranged sequentially under the electromagnet 1 from top to bottom.

[0019] like figure 2 As shown, a valve core assembly 5 of a bypass type externally guided gas injection valve with a floating valve seat is mainly composed of an armature 10, a spring seat 11, a fastening bolt 19, a gasket 17, a bottom plate 12 and a valve...

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Abstract

The invention aims at providing a bypass type outer guiding gas injection valve with a floating valve seat. Through a floating valve seat structure, the function that reverse leakage caused by unbalanced inner pressure and outer pressure of the gas injection valve is avoided is achieved, and work reliability of the gas injection valve is guaranteed. The gas inflow and flow guiding process is achieved through a bypass structure and a flow guiding cavity structure. Valve element control is achieved through executer control, and the gas valve gas injection function is achieved through gas path control. Through cooperation of an outer guiding structure, a pressure balance hole and a pressure balance groove, perpendicularity of a valve element is guaranteed, gas flow stable work is achieved, reliable work is achieved, and the high response speed is achieved. Through the mixed gas inflow manner of direct gas inflow of an axial main gas groove and gas inflow of a circumferential gas supplementing hole, large flow is achieved, and the gas supply efficiency of an engine is effectively improved; and meanwhile, gas flow interference can be avoided, and gas path stability is achieved. Through a multi-girdle structure between the valve element and the valve seat, face sealing of the gas injection valve is achieved, and reliability is high.

Description

technical field [0001] The invention relates to a gas injection valve, in particular to a gas injection valve for a natural gas engine. Background technique [0002] In recent years, with the rapid growth of my country's oil consumption, oil is heavily dependent on imports. Natural gas burns cleanly and has abundant reserves in my country, making it the most likely fuel to replace diesel. Natural gas engines have good application prospects as ship power, especially as propulsion power for inland watercraft. As a fuel supply device for a natural gas engine, the performance of the gas injection valve directly determines the economy and emission performance of the natural gas engine. At present, natural gas engines often have insufficient gas supply when working under full working conditions, resulting in unstable speed when the engine is running under full working conditions, which will be more serious on high-power engines, which seriously affects the normal use of the engi...

Claims

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Application Information

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IPC IPC(8): F02M21/02
CPCF02M21/0254F02M21/0257F02M21/0269Y02T10/30
Inventor 宋恩哲范立云姚崇董全杨立平孙军
Owner HARBIN ENG UNIV
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