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Nozzle plate for fuel injection device

A fuel injection device and fuel injection technology, applied in the direction of fuel injection devices, special fuel injection devices, charging systems, etc., can solve the problems of reduced fuel utilization efficiency and achieve the effect of improving utilization efficiency

Inactive Publication Date: 2016-09-21
ENPLAS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to these first to second conventional examples, the atomized fuel splashes over a wide range and adheres to the wall surface of the intake pipe, etc., and there is fuel that is not directly sent into the cylinder, so the fuel utilization efficiency is reduced. reduce

Method used

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  • Nozzle plate for fuel injection device
  • Nozzle plate for fuel injection device
  • Nozzle plate for fuel injection device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0047] figure 1 It is a figure which shows typically the usage state of the fuel injection device 1 equipped with the nozzle plate for fuel injection devices of this embodiment. As that figure 1 As shown, the port injection fuel injection device 1 is installed in the middle of the intake pipe 2 of the engine, and injects fuel into the intake pipe 2 to mix the air and fuel introduced into the intake pipe 2 to form a combustible mixture. Supply from the intake port 3 into the cylinder 4.

[0048] Below, based on Figure 2 ~ Figure 4 The nozzle plate 5 for a fuel injection device (hereinafter referred to as a nozzle plate) according to the first embodiment of the present invention will be described. In addition, figure 2 It is a figure which shows the front end side of the fuel injection device 1 to which the nozzle plate 5 of this embodiment is attached. In addition, image 3 It is a figure which shows the nozzle plate 5 of this embodiment. In addition, Figure 4 It is a figur...

no. 2 approach

[0087] Figure 11 ~ Figure 12 It is a figure which shows the nozzle plate 5 of the 2nd Embodiment of this invention. In addition, Picture 11 (a) is a front view of the nozzle plate 5 of this embodiment, Picture 11 (b) is along Picture 11 (a) A cross-sectional view of the nozzle plate 5 cut along the line B6-B6, Picture 11 (c) is along Picture 11 (a) A cross-sectional view of the nozzle plate 5 cut along the line B7-B7, Picture 11 (d) is a back view of the nozzle plate 5 of this embodiment. In addition, Picture 12 (a) Yes Picture 11 (a) An enlarged view of a part (central part) of the nozzle plate 5, Picture 12 (b) is a partial enlarged view of the nozzle plate 5 showing the nozzle hole 10 and its vicinity enlarged, Picture 12 (c) is along Picture 12 (b) An enlarged cross-sectional view cut along the line B8-B8.

[0088] Figure 11 ~ Figure 12 The nozzle plate 5 of the illustrated embodiment is the same as the nozzle plate 5 of the first embodiment, and a plurality of va...

no. 3 approach

[0126] Figure 19 ~ Figure 21 It is a diagram showing the nozzle plate 5 of the third embodiment of the present invention. In addition, Figure 19 This is a diagram showing a structure in which the nozzle plate 5 of Modification 1 of the first embodiment is further modified. In addition, Picture 20 It is a figure which shows the structure which further changed the nozzle plate 5 of the modification 1 of 2nd Embodiment. In addition, Figure 21 Is to Figure 19 and Picture 20 An enlarged view of the central part of the nozzle plate 5 shown.

[0127] As shown in these figures, the nozzle plate 5 is formed with a central nozzle hole 62 that penetrates the bottom wall 15 along the central axis 22 in the center of the bottom wall 15 (a position coincident with the central axis 22 ). Furthermore, in the central nozzle hole 62, the outlet side opening 63 on the outer side is partially blocked at four places by the interference body 64. The four places of the interference body 64 pass ...

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PUM

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Abstract

A nozzle plate for a fuel injection device reduces fuel adhering to the wall surface, etc. of an intake pipe by preventing fuel flowing out of the fuel injection opening of the fuel injection device from being blown over a wide area, and improves fuel utilization efficiency. The nozzle plate (5) has blades (13) formed surrounding a nozzle hole (10), the blades (13) being located on the outer surface (40) of a bottom wall section (15) in a region surrounding the nozzle hole (10). When fuel is injected from the nozzle hole (10) and pressure in the vicinity of the nozzle hole (10) decreases, the blades (13) guide the flow of air moving radially inward of the bottom wall section (15) from the outside radially of the bottom wall section (15) and generate the swirl flow of the air about the center of the bottom wall section (15). The fine particles of fuel injected from the nozzle hole (10) impart a momentum to the air which swirls about the center of the bottom wall section (15), thereby causing the air to flow helically. The helical flow of the air transports the fine particles of the fuel.

Description

Technical field [0001] The present invention relates to a nozzle plate for a fuel injection device that is attached to a fuel injection port of a fuel injection device and atomizes and injects fuel flowing from the fuel injection port. Background technique [0002] An internal combustion engine such as an automobile (hereinafter referred to as an "engine") mixes fuel injected from a fuel injection device with air introduced through an intake pipe to form a combustible mixture, and burns the combustible mixture in a cylinder. For this kind of engine, it is known that the mixing state of fuel and air injected from the fuel injection device has a great influence on the performance of the engine. In particular, it is known that the atomization of the fuel injected from the fuel injection device affects the performance of the engine. Important factor. [0003] (First existing example) [0004] E.g, Figure 25 The nozzle plate 1002 shown is mounted on the fuel injection port 1001 of the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/18
CPCF02M61/184F02M2200/8046F02M2200/9015F02M61/1833F02M61/1853F02M61/162
Inventor 野口幸二
Owner ENPLAS CORP