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Guide table type oil jet nozzle

A technology of fuel injectors and guide platforms, which is applied in the direction of fuel injection devices, engine components, machines/engines, etc. It can solve the problems of short penetrating distance of umbrella-shaped spray, too thick circumferential distribution of mixed gas, unevenness, etc., and achieve fog Good chemical performance, rapid and perfect combustion, uniform circumferential distribution

Inactive Publication Date: 2005-05-18
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of too thick mixed gas and uneven distribution in the circumferential direction at the landing point of the porous spray, and the short penetrating distance of the umbrella-shaped spray, the present invention provides a guided table-type fuel injector, which can provide atomization Spray with good performance, uniform circumferential distribution and controllable penetration distance

Method used

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Embodiment Construction

[0013] exist figure 1 , 2 . In the embodiment shown in 3, the guide table type fuel injector is a pair composed of a needle valve (1) and a needle valve body (2). There is a guide table (3) at the head of the needle valve body (2). Hollow guide platform (3) is enclosed within on the cylinder (2c) of needle valve body (2) head, and guide platform (3) is welded on the cylinder (2c) by welding block (4). exist figure 2 Among them, the head of the needle valve body (2) is also provided with 3 upper row of spray holes (2a) and 3 lower row of spray holes (2b), and the lower row of spray holes (2b) is facing the guide platform (3) The conical arc surface (3a). The included angle of the upper row of oil injection holes (2a) is 140 degrees, and the three upper row of oil injection holes (2a) and the three lower rows of oil injection holes (2b) are staggered from each other to form a uniform circumferential distribution. exist image 3 Among them, a row of 6 oil injection holes (2...

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Abstract

The present invention relates to formation and combustion of mixed gas in engine. The guide table type oil jetting nozzle has one guide table and oil jetting holes in the nose of its needle valve body. When there is one row of oil jetting holes, the whole or partial oil beam of the oil jetting holes is jetted to the conic cambered surface on the guide table; and when there are two rows of oil jetting holes, the whole or partial oil beam of the oil jetting holes in the lower row is jetted to the conic cambered surface on the guide table and the two rows of oil jetting holes are crossed and homogeneously circumferential distributed. By means of the guiding of the conic cambered surface, the secondary oil beam has homogeneous spatial distribution, high atomizing effect and controllable penetrating distance, and this improves the formation of mixed fuel gas, speeds the combustion and improves the performance of the engine.

Description

technical field [0001] The invention relates to a guide table type oil injector, which belongs to the field of engine mixture gas formation and combustion. Background technique [0002] At present, the excess air coefficient of the diesel engine is relatively large, but it is easy to emit black smoke. The main reason is that the porous spray is not uniform in the circumferential direction, and an over-concentrated area is generated at the spray point. In order to solve this problem, although the umbrella-shaped spray produced has good atomization performance and uniform distribution in the circumferential direction, the penetrating force is not strong. Therefore, the performance is better under medium and low working conditions, and the black smoke increases more under high working conditions because the surrounding air of the combustion chamber cannot be used. Contents of the invention [0003] In order to solve the problem of too thick mixed gas and uneven distribution ...

Claims

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Application Information

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IPC IPC(8): F02M61/10
Inventor 隆武强杜宝国冯立岩
Owner DALIAN UNIV OF TECH
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