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A diesel fuel injector based on the vortex cavitation-induced hollow spray structure in the nozzle

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: 2022-07-22
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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  • A diesel fuel injector based on the vortex cavitation-induced hollow spray structure in the nozzle
  • A diesel fuel injector based on the vortex cavitation-induced hollow spray structure in the nozzle
  • A diesel fuel injector based on the vortex cavitation-induced hollow spray structure in the nozzle

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Embodiment Construction

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0027] A diesel fuel injector based on a hollow spray structure induced by vortex line cavitation in the nozzle proposed by the present invention, by strengthening and controlling the vortex line cavitation phenomenon inside the nozzle of the diesel engine fuel injector, the fuel jet has a hollow spray structure, thereby optimizing Fuel jet atomization quality. like figure 1 The diesel fuel 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 fuel injector coincides with the axis of the needle ...

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Abstract

The invention discloses a diesel engine fuel injector based on a vortex line cavitation-induced hollow spray structure in a nozzle, comprising a needle valve, a needle valve body, a spray hole and a pressure chamber; the axis of the needle valve of the fuel injector and the needle valve body The axes coincide, the head of the needle valve body is evenly distributed with a plurality of identical tapered conical nozzle holes, and the outlet ends of all nozzle holes are communicated with the pressure chamber; the pressure chamber of the injector is composed of equal-diameter hemispheres and It is composed of cylinders. By optimizing the geometric structure of the injector, the vortex line cavitation phenomenon in the diesel injector under different loads can be strengthened, and the fuel atomization quality of the injector can be 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 vortex line cavitation-induced hollow spray structure in a nozzle. 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 greatly improves the quality of fuel spray atomization, greatly improves the output power and torque of the diesel engine, and has become the mainstream development direction of the world's diesel engine power. As the core component linking fuel injection and jet atomization, the electronically controlled 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 still a certai...

Claims

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Application Information

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