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Diesel injector based on nozzle inner vortex cavitation induced hollow spraying structure

A technology for fuel injectors and diesel engines, which is applied to machines/engines, mechanical equipment, engine components, etc., can solve the problem of not finding public reports on diesel fuel injectors, and achieve the effect of improving the quality of atomization

Active Publication Date: 2021-01-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, there are currently no published reports on diesel injectors based on the hollow spray structure induced by vortex line cavitation in the nozzle

Method used

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  • Diesel injector based on nozzle inner vortex cavitation induced hollow spraying structure
  • Diesel injector based on nozzle inner vortex cavitation induced hollow spraying structure
  • Diesel injector based on nozzle inner vortex cavitation induced hollow spraying structure

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] A kind of diesel engine fuel injector based on the hollow spray structure induced by vortex line cavitation in the nozzle proposed by the present invention, by strengthening and controlling the internal vortex line cavitation phenomenon of the diesel engine injector nozzle, the fuel jet flow is in a hollow spray structure, thereby optimizing Fuel jet atomization quality. Such as figure 1 The diesel injector shown includes a needle valve 1, a needle valve body 2, an injection hole 3 and a pressure chamber 4; the axis of the needle valve 1 of the injector coincides with the axis of the nee...

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Abstract

The invention discloses a diesel injector based on a nozzle inner vortex cavitation induced hollow spraying structure. The diesel injector comprises a needle valve, a needle valve body, spraying holesand a pressure chamber; the axis of the needle valve of the injector coincides with the axis of the needle valve body; the multiple identical reduced conical spraying holes are evenly distributed inthe head of the needle valve body; and the outlet ends of all the spraying holes communicate with the pressure chamber. The pressure chamber of the injector is composed of the hemisphere and the cylinder which are equal in diameter, the geometrical structure of the injector is optimized, the vortex cavitation phenomenon in the diesel injector under different loads is strengthened, and the fuel atomization quality of the injector is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of diesel fuel injection atomization, and in particular relates to a diesel fuel injector based on a nozzle inner vortex cavitation induced hollow spray structure. Background technique [0002] Diesel engine is an important equipment foundation to promote a country's economic growth and social operation. The high-pressure common rail fuel injection system has greatly improved the quality of fuel spray and atomization, greatly increased the output power and torque of diesel engines, and has become the mainstream development direction of diesel engine power in the world. As the core component connecting fuel injection and jet atomization, the electronically controlled fuel injector in the system is the key to breaking through the high-pressure common rail fuel injection technology. At present, my country has developed into the main market and production country of diesel engines in the world, but there is sti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/06F02M61/18
CPCF02M61/06F02M61/182F02M61/1846F02M61/1893Y02T10/12F02M61/1833F02M61/1866F02M61/10F02M61/18
Inventor 何志霞郭根苗管伟王谦王健权吴朝晖文李明
Owner JIANGSU UNIV
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