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Double-seat multiple-atomizing nozzle

A technology of atomizing nozzles and seat surfaces, which is applied in fuel injection devices, engine components, machines/engines, etc., can solve problems such as poor atomization of nozzles, improve power and fuel economy, improve atomization effects, The effect of improving thermal efficiency

Inactive Publication Date: 2012-10-17
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a double-seat multi-atomization nozzle that overcomes the defect of poor atomization of the single injection of the existing nozzle

Method used

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  • Double-seat multiple-atomizing nozzle

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] combine Figure 1~2 , figure 1 It is a schematic diagram of the overall structure of the double-seat surface secondary atomization nozzle of the present invention, including a needle valve body 1, a needle valve 2, an injection hole 3, a needle valve lower seat surface 4, a needle valve upper seat surface 5, an oil storage chamber 6, an oil passage Hole 7. The fuel that enters the injector from the high-pressure fuel pipe enters the annular oil chamber between the nozzle needle valve body 1 and the needle valve 2 through the oil tank, and the high-pressure fuel in the annular oil chamber enters through the cross-arranged oil passage holes 7 on the needle valve 2 There is an oil storage cavity 6 in the lower part of the needle valve 2, and the entire oil storage cavity 6 is filled. The needle valve lower seat surface 4 and the needle valve upper seat surface 5 on the needle valve body 1 form two sealing belts with the needle valve 2. When the needle valve 2 is controll...

Embodiment approach 2

[0020] combine Figure 3-4 , image 3 It is a schematic diagram of the overall structure of the double-seat three-time atomization nozzle of the present invention. On the basis of Embodiment 1, a group of injection holes is added. As described in Embodiment 1, when the needle valve 2 is raised, the injection hole 10 starts to inject oil first, and then the injection holes 8 and 9 inject oil in sequence. , when the nozzle hole 8 is opened, the fuel sprayed from the nozzle hole 10 collides with the fuel sprayed from the nozzle hole 8, and the fuel is atomized for the second time. The fuel is firstly impacted by the fuel sprayed from the injection hole 9, and the fuel is atomized for the second time, and then the fuel sprayed by the second atomization collides with the fuel oil beam sprayed from the injection hole 8. Due to the impact between the oil beams, the fuel oil is again Atomization realizes multiple atomization of fuel. The oil passage holes 7 connecting the oil stora...

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Abstract

The invention aims to provide a double-seat multiple-atomizing nozzle which comprises a needle valve body, a needle valve, an oil storage chamber and a spray hole, wherein the needle valve is arranged in the needle valve body; an annular oil chamber is formed by the needle valve and the needle valve body; the middle-lower part of the needle valve is provided with the oil storage chamber; the needle valve is further provided with an oil hole capable of communicating the oil chamber and the oil storage chamber; the lower end part is provided with an upper needle valve seat surface and a lower needle valve seat surface; and the lower end part of the needle valve body is provided with a first spray hole and a second spray hole. When the needle valve is positioned at the lowest end, the first spray hole is sealed by the upper needle valve seat surface, and the second spray hole is sealed by the lower needle valve seat surface; and the first spray hole is communicated with the annular oil chamber when the needle valve moves upwards, and the second spray hole is communicated with the oil storage chamber when the needle valve further moves upwards. The double-seat multiple-atomizing nozzle provided by the invention can realize the atomization twice or multiple times when the same fuel is injected, thereby enhancing the atomizing effects of the fuel and the mixing degree of the mixed gases in a combustion chamber, efficiently enhancing the thermal efficiency of a combustion engine and improving the dynamic property of the combustion engine and the economical efficiency of the fuel.

Description

technical field [0001] The invention relates to an internal combustion engine, in particular to a nozzle of the internal combustion engine. Background technique [0002] The nozzle is the main part of the fuel injector of the internal combustion engine. Its basic function is to inject the fuel into the combustion chamber in the form of an oil beam through the nozzle hole, and cooperate with the shape of the combustion chamber and the airflow movement to form a good mixture so that the fuel is Burn as fully as possible in the combustion chamber. In an internal combustion engine, the completeness of fuel combustion depends to a large extent on the atomization quality of the fuel. This is because when the fuel atomization is poor, the degree of mixture mixing is not good, the afterburning stage increases during fuel combustion, and the thermal efficiency of the internal combustion engine Significant decline, resulting in black smoke from the exhaust, carbon deposits in the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/10F02M61/18
Inventor 范立云白云王昊刘鹏马修真宋恩哲袁志国
Owner HARBIN ENG UNIV
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