Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fuel injection valve and orifice plate

A technology of fuel injection valves and injection holes, which is applied in the direction of fuel injection devices, charging systems, machines/engines, etc., which can solve the problems of reduced layout of passageways and difficulties in multi-injection holes, and achieve roughly equal strength

Active Publication Date: 2021-04-13
MITSUBISHI ELECTRIC CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multiple nozzle holes are desired for further micronization, but the two paths reduce the layout, making it difficult to achieve multiple nozzle holes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fuel injection valve and orifice plate
  • Fuel injection valve and orifice plate
  • Fuel injection valve and orifice plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] figure 1 A cross section of the fuel injection valve according to the embodiment of the present invention is shown. In the fuel injection valve 100, the fuel introduced from the fuel supply port is atomized and discharged from the injection port in the form of a spray. The fuel injection valve 100 is composed of a drive circuit 1, a solenoid device 4, a housing 5, a core 6, an armature 8, a piston 9, a valve body 11, a valve seat 12, an orifice plate 13, and the like. In the drive circuit 1 of the fuel injection valve 100, an operation signal and a stop signal are sent from the engine control device. The drive circuit 1 supplies drive current to the solenoid device 4 based on these signals, and drives the piston 9 . The drive current generates magnetic flux in the magnetic circuit composed of the armature 8 , the iron core 6 , the case 5 , and the valve main body 11 . The valve seat 12 is arranged on the downstream side of the piston 9 .

[0034] The case 5 correspo...

Embodiment approach 2

[0050] Figure 9 The recess 13a in the fuel injection valve 100 according to Embodiment 2 is shown. The cylindrical portion 19 has a diameter D1. In order to create a uniform swirling fuel flow, it is preferable that the fuel flow 21 directly entering the cylindrical part 19 from the introduction part 18 and the fuel flow 22 passing through the rotating part 20 from the introducing part 18 do not conflict with the swirling fuel flow formed in the cylindrical part 19 smoothly flow into the cylindrical part 19. That is, it is necessary to make the inflow area of ​​each fuel into the cylindrical portion 19 smaller than the radius D1 / 2 of the cylindrical portion.

[0051] In the fuel injection valve 100 according to the present embodiment, as Figure 10 As shown, the area directly entering the cylindrical portion 19 from the introduction portion 18 has a width W1-W2, and the area where the fuel flow through the rotating portion 20 flows into the cylindrical portion 19 has a wid...

Embodiment approach 3

[0054] Figure 11A A plan view showing the recess 13a in the fuel injection valve according to the third embodiment. Figure 11B A cross-sectional view showing the recess 13a in the fuel injection valve according to the third embodiment. In the configurations of Embodiments 1 and 2, since the fuel flow flowing into the cylindrical portion directly enters the injection hole 14, the fuel may be injected with insufficient rotation, and the thinning of the liquid film may not be sufficiently performed. Therefore, in Embodiment 3, the bottom surface of the cylindrical portion 19 is made deeper than the bottom surfaces of the introduction portion 18 and the rotating portion 20 . As a result, the fuel flow 21 directly entering the cylindrical portion 19 from the introduction portion 18 and the fuel flow 22 passing through the rotating portion 20 from the introduction portion 18 flow into the cylindrical portion and then flow toward the bottom surface of the cylindrical portion, so t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The fuel injection valve (100) includes: a piston (9) driven by a solenoid device (4); a valve seat (12) arranged on the downstream side of the piston and having an opening (12b); The radial depression (13a) of the branching part (2), the introduction part (18), the cylindrical part (19) and the rotating part (20) and the nozzle hole (14) opened on the downstream side of the cylindrical part board (13). One end of the introduction part is connected to the bifurcation part, and the other end is connected to the cylindrical part and the rotating part. The surface is inclined by an angle θ with respect to the central axis of the introduction part, and the angle θ converges in the range of 0° to 45°, and the ratio W2 / W1 of the width W2 of the rotating part to the width W1 of the introduction part converges in a range of 0.3 to 0.7 within the following range.

Description

technical field [0001] The present invention relates to a fuel injection valve, and more particularly to a fuel injection valve used for supplying fuel to an internal combustion engine. Background technique [0002] In internal combustion engines such as automobiles, fuel injection valves are used to control the supply amount of fuel. In recent years, regulations on exhaust gas of internal combustion engines have been strengthened, and fuel spray injected from fuel injection valves has been required to be atomized. In the prior art disclosed in Patent Documents 1 and 2, in order to achieve atomization of fuel, a technique of forming a swirling fuel flow in a fuel injection valve has been studied. [0003] The fuel injection valve disclosed in Patent Document 1 includes a valve housing formed symmetrically with respect to the long-side axis. A valve closing member cooperating with the valve seat surface is arranged inside the valve housing. A central opening is provided do...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F02M51/08F02M51/06F02M61/18
CPCF02M61/162F02M51/0682F02M61/1853F02M51/06
Inventor 川崎翔太宗实毅伊藤启祐茶园史也木本裕辅
Owner MITSUBISHI ELECTRIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com