CN101749145A - nozzle for lpi injector - Google Patents
nozzle for lpi injector Download PDFInfo
- Publication number
- CN101749145A CN101749145A CN200910224759A CN200910224759A CN101749145A CN 101749145 A CN101749145 A CN 101749145A CN 200910224759 A CN200910224759 A CN 200910224759A CN 200910224759 A CN200910224759 A CN 200910224759A CN 101749145 A CN101749145 A CN 101749145A
- Authority
- CN
- China
- Prior art keywords
- teflon pipe
- sparger
- special teflon
- nozzle
- lpi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a nozzle for an LPI injector, wherein, even the injecting pressure of a fuel injected by a fuel injecting hole of the injector is continuously applied on the upper end of a Teflon pipe, because the elastic force of a spring member is greater than the injecting pressure of the fuel at the upper end of the Teflon pipe, the spring member powerfully supports the lower end of the Teflon pipe, thereby the upper end of the Teflon pipe continuously contacts with the lower end of the injector, and no gap is formed between the lower end of the injector and the upper end of the Teflon pipe. Therefore, the hole is prevented from being blocked by the tar adhered in the hole and located at the upper end of the Teflon pipe. In addition, the poor engine starting, vehicle shake and the stop of the engine in the running process can be prevented.
Description
The cross reference of related application
The application requires the preference of the korean patent application submitted on December 3rd, 2008 10-2008-0121953 number, and the full content of this application is incorporated herein by reference for all purposes.
Technical field
The present invention relates to a kind of nozzle of the LPI of being used for sparger, the gap between the upper end of its lower end by removing described sparger and special teflon pipe, and prevent that the spray-hole of described sparger from being blocked by the tar attachment.
Background technique
Usually, LPI (LPI, LPG sprays) sparger is installed in the fuel system of LPG vehicle, and sprays the liquid fuel that pressurizes by petrolift.
According to LPI sparger as shown in Figure 1, sparger 1 is inserted in the shell 2 and by protective cover 3 and fixes, and nozzle 4 launched machine standing parts 5 cover on the bottom of shell 2.
Nozzle 4 comprises: special teflon pipe 7, and it is made by plastic materials and has hole 6, and described hole 6 links to each other so that fuel can flow through with the lower end of sparger 1; And the tip 8 that freezes, it is made and is covered special teflon pipe 7 by brass.
In this structure, described icing most advanced and sophisticated 8 reasons of why being made by brass are in order to be transmitted to special teflon pipe 7 in harmless lost territory from the heat of motor standing part 5.
In addition, described special teflon pipe 7 is in order to prevent by most advanced and sophisticated 8 reasons that covered of freezing why because that condensation causes is icing, this condensation betides described fuel injection portion branch, and is caused by the transmission of heat by between made icing most advanced and sophisticated 8 and the intake manifold of brass of contact each other.
Simultaneously, the upper end of special teflon pipe 7 contacts with the lower end of described sparger 1 by the lower end of shell 2.
Yet, in correlative technology field, having the problem that the LPI sparger of said structure exists is: when fuel under high pressure is repeated to spray fuel orifice 1a by sparger 1, the special teflon pipe 7 of nozzle 4 moves down gradually along with the increase of number of times, and does not keep in touch with the lower end of sparger 1 upper end of special teflon pipe 7, and be separated, thereby formed clearance C 1 with described lower end.
As indicated above, when clearance C 1 forms between the upper end of the lower end of sparger 1 and special teflon pipe 7, the a part of fuel that sprays by fuel orifice 1a has leaked from clearance C 1, flow on the outer surface of special teflon pipe 7, and stopped and collect, the sealing that this O shape circle 9 keeps between shell 2 and the special teflon pipe 7 by O shape circle 9.
When the described fuel that leaks out and be collected by clearance C 1 repeatedly evaporates and liquefies, produced tar, and along with the increasing of number of times, the area that tar adheres to increases gradually, the hole 6 of the upper end of the special teflon pipe 7 of the circulation passage that acts as a fuel as a result, gets clogged.
As indicated above, when the hole 6 of special teflon pipe 7 was blocked by described tar, fuel can not successfully be supplied in the firing chamber of motor, the result, and motor does not start, vehicle shakes or motor quits work in the process of moving.
Simultaneously, the reference character among the Fig. 1 that does not hand over hereinbefore " 10 " expression O shape circle, it keeps the sealing between sparger 1 and the shell 2.
The disclosed above-mentioned information of background parts of the present invention only is used for increasing the understanding to general background of the present invention, and it should not constitute affirmation of known prior art and any type of hint for a person skilled in the art as this information.
Summary of the invention
Different aspect of the present invention relates to the nozzle that a kind of LPI of being used for sparger is provided, its hole that prevents special teflon pipe is blocked by tar, and prevent that the vibrations of bad engine start, vehicle and motor from quitting work in the process of moving, even thereby these effects are to make fuel under high pressure be repeated to spray the fuel orifice by described sparger by improving described structure, the upper end of described special teflon pipe also can keep contacting with the lower end of sparger.
In one aspect of the invention, the nozzle that is used for the LPI sparger comprises: spring groove, it is along the longitudinal direction of special teflon pipe and form, and at the excircle of the bottom of described special teflon pipe with cover between the inner circumference of bottom at icing tip of described special teflon pipe; Spring component, it is inserted in the described spring groove, thereby its two ends are supported by described special teflon pipe and described icing tip respectively, and this spring component provides elastic force to described special teflon pipe, thereby the upper end of described special teflon pipe 7 is contacted with the lower end of described sparger.
According to the present invention, even described jet pressure by the injected fuel of the fuel orifice of described sparger is applied to the upper end of described special teflon pipe constantly, because the elastic force that described spring component had is greater than the jet pressure of the fuel of the upper end that is applied to described special teflon pipe, then described spring component effectively supports the lower end of described special teflon pipe, thereby the upper end of described special teflon pipe also can keep being connected with the lower end of described sparger, and can not form the gap between the upper end of the lower end of described sparger and described special teflon pipe.Therefore, can prevent that described hole is attached in this hole and the tar that is positioned at the upper end of described special teflon pipe blocks.In addition, can prevent that bad engine start, vehicle vibrations and motor from quitting work in the process of moving.
Method and apparatus of the present invention has other feature and advantage, these feature and advantage can be from be combined in present specification accompanying drawing and below embodiment in become apparent, and carry out more detailed elaboration therein, wherein accompanying drawing and embodiment one are used from and explain principles more of the present invention.
Description of drawings
Fig. 1 is the sectional view of LPI sparger that is equipped with the nozzle of correlative technology field.
Fig. 2 is the sectional view that is equipped with according to the LPI sparger of nozzle of the present invention.
Embodiment
Below will be in detail with reference to different embodiments of the invention, example of the present invention is shown in the drawings and be described below.Though describe the present invention in conjunction with exemplary embodiment, should be appreciated that this description is not intended to the present invention is limited to those exemplary embodiments.On the contrary, the present invention is intended to not only cover exemplary embodiment, also covers and can be included in that various in the spirit and scope of the present invention that limited by claims substitute, improvement, equivalent structure and other embodiments.
According to LPI sparger shown in Figure 2, sparger 1 is inserted in the shell 2 and by protective cover 3 and fixes, and nozzle 4 launched machine standing parts 5 cover on the bottom of shell 2.
Nozzle 4 comprises: special teflon pipe 7, and it is made by plastic materials and has hole 6, and described hole 6 links to each other so that fuel can flow through with the bottom of sparger 1; And the tip 8 that freezes, it is made and is covered special teflon pipe 7 by brass.
In this structure, most advanced and sophisticated 8 reasons of why being made by brass of freezing are in order to be transmitted to special teflon pipe 7 in harmless lost territory from the heat of motor standing part 5.
In addition, special teflon pipe 7 is in order to prevent by most advanced and sophisticated 8 reasons that covered of freezing why because freezing of causing of condensation, and this condensation betides that described fuel injection portion is divided and caused by the transmission of heat by between made icing most advanced and sophisticated 8 and the air inlet qi mouth of brass that contacts each other.
In addition, the upper end of special teflon pipe 7 contacts with the lower end of sparger 1 by the lower end of shell 2.
Simultaneously, have spring groove 11 according to the nozzle 4 of LPI sparger of the present invention, its longitudinal direction along special teflon pipe 7 forms, and be in special teflon pipe 7 the bottom excircle and cover between the inner circumference of icing most advanced and sophisticated 8 bottom of special teflon pipe 7; Nozzle 4 also comprises spring component 12, and it is inserted in the spring groove 11, thereby its two ends and provide elastic force to special teflon pipe 7 respectively by the special teflon pipe 7 and most advanced and sophisticated 8 supportings of freezing, and make the upper end of special teflon pipe 7 contact with the lower end of sparger 1.
In this structure, the predetermined part of the bottom of special teflon pipe 7 has the excircle less than other parts; And have the locking of going up step 13, lock the longitudinal direction of step 13 on this, and be formed at the position that outer diameter begins to reduce perpendicular to special teflon pipe 7.
Spring groove 11 is limited by last locking step 13, lower end extension 14, part and most advanced and sophisticated 8 the space that inner circumference surrounded of freezing with outer diameter that dwindles of special teflon pipe 7, and described icing most advanced and sophisticated 8 inner circumference is faced mutually with the part of the outer diameter that dwindles with special teflon pipe 7.
The elastic force of spring component 12 is applied on the special teflon pipe 7, make the upper end of this spy's teflon pipe 7 contact with the lower end of described sparger 1, described elastic force should be greater than the jet pressure of fuel, and this jet pressure is applied to the upper end of described special teflon pipe 7 when the injected fuel orifice 1a by sparger 1 of described fuel.
Preferably, spring component 12 is pressure springs.
In addition, preferably, spring component 12 is made by the brass of the heat-conductive characteristic with the special teflon pipe 7 of good guiding.
Simultaneously, the reference character among the Fig. 2 that does not hand over hereinbefore " 10 " expression O shape circle, it keeps the sealing between sparger 1 and the shell 2.
Described LPI sparger according to the structure of the embodiment with the invention described above, even fuel under high pressure repeatedly and jet pressure injected by the fuel orifice 1a of sparger 1 constantly and described fuel be applied to the upper end of special teflon pipe 7 constantly, because the elastic force that spring component 12 is had is greater than the jet pressure of the fuel of the upper end that is applied to described special teflon pipe 7, then spring component 12 effectively supports the lower end of described special teflon pipe 7, thereby the upper end of special teflon pipe 7 keeps contacting with the lower end of sparger 1, and can between the upper end of the lower end of sparger 1 and special teflon pipe 7, not form clearance C 1, this point and correlation technique are also inequality.
In addition, the fuel that sprays by hole 1a is injected in the motor by the hole 6 of special teflon pipe 7, and does not flow to as correlation technique on the outer surface of special teflon pipe 7.
Therefore, embodiments of the invention can prevent that hole 6 is attached in this hole 6 and the tar that is positioned at the upper end of special teflon pipe 7 blocks.Therefore, can prevent that bad engine start, vehicle vibrations and motor from quitting work in the process of moving.
The purpose of aforementioned concrete exemplary embodiment of the present invention is to illustrate and describe.These embodiments are intended to limit the present invention, neither be intended to the present invention is limited to the concrete form that is disclosed, and obviously, can carry out many improvement and variation according to above-mentioned instruction.The selection of these exemplary embodiments and description are in order to explain principles more of the present invention and practical application thereof, thereby others skilled in the art are made and use various exemplary embodiment of the present invention and variously substitute and improve.Protection scope of the present invention is intended to be limited by claims and equivalent thereof.
Claims (13)
1. nozzle that is used for the LPI sparger comprises:
Spring groove, it forms on the longitudinal direction of special teflon pipe, and at the excircle of the bottom of described special teflon pipe with cover between the inner circumference of bottom at icing tip of described special teflon pipe; And
Spring component, it is inserted in the described spring groove, thereby its two ends are supported by described special teflon pipe and described icing tip respectively, and this spring component provides elastic force to described special teflon pipe, thereby the upper end of described special teflon pipe is contacted with the lower end of described sparger.
2. the nozzle that is used for the LPI sparger as claimed in claim 1, the predetermined part of the bottom of wherein said special teflon pipe is formed the other parts of its outer diameter less than this spy's teflon pipe, and the going up of longitudinal direction that has perpendicular to described special teflon pipe locks step, and
The lower end extension forms perpendicular to the longitudinal direction at described icing tip, thereby the inner diameter of the lower end at described icing tip reduces when contacting with the excircle of the part of the diameter that reduces with described special teflon pipe.
3. the nozzle that is used for the LPI sparger as claimed in claim 2, wherein said spring groove are the described spaces of going up between the described lower end extension that locks step and described icing tip of described special teflon pipe.
4. the nozzle that is used for the LPI sparger as claimed in claim 2, wherein said spring component are configured to its upper end and are supported by the described locking step of going up, and its lower end is supported by described lower end extension.
5. the nozzle that is used for the LPI sparger as claimed in claim 1, the elastic force of wherein said spring component is applied on the described special teflon pipe, make the upper end of this spy's teflon pipe contact with the lower end of described sparger, described elastic force is greater than the jet pressure of fuel, and this jet pressure is applied to the upper end of described special teflon pipe when the injected fuel orifice by described sparger of described fuel.
6. the nozzle that is used for the LPI sparger as claimed in claim 2 wherein because the elastic force of described spring component, does not form the gap between the described upper end of the described lower end of described sparger and described special teflon pipe.
7. the nozzle that is used for the LPI sparger as claimed in claim 1, wherein said spring component is a pressure spring.
8. the nozzle that is used for the LPI sparger as claimed in claim 1, wherein said spring component is made by the brass with high thermal conductivity energy.
9. nozzle that is used for the LPI sparger comprises:
Spring groove, it is formed at the excircle of special teflon pipe and covers between the inner circumference at icing tip of described special teflon pipe; And
Spring component, it is inserted in the described spring groove, thereby its two ends are supported by described special teflon pipe and described icing tip, and this spring component provides elastic force to described special teflon pipe, thereby the upper end of described special teflon pipe is contacted with the lower end of described sparger.
10. the nozzle that is used for the LPI sparger as claimed in claim 9, wherein said spring groove be along the longitudinal direction of described special teflon pipe and form, and between the inner circumference of the bottom at the excircle of the bottom of described special teflon pipe and described icing tip.
11. the nozzle that is used for the LPI sparger as claimed in claim 9, the predetermined part of the bottom of wherein said special teflon pipe has excircle, this excircle is less than the other parts of this spy's teflon pipe, and the predetermined part of the bottom of described special teflon pipe has the upward locking step perpendicular to the longitudinal direction of described special teflon pipe
Be formed at the lower end at described icing tip perpendicular to the lower end extension of the longitudinal direction at described icing tip, thereby described inner diameter reduces,
Described spring groove is formed in the described space of going up between locking step and the described lower end extension, and
Described spring component is configured to its upper end and is supported by the described locking step of going up, and its lower end is supported by described lower end extension.
12. the nozzle that is used for the LPI sparger as claimed in claim 9, the elastic force of wherein said spring component is applied on the described special teflon pipe, make the upper end of this spy's teflon pipe contact with the lower end of described sparger, described elastic force is greater than the jet pressure of fuel, and this jet pressure is applied to the upper end of described special teflon pipe when the injected fuel orifice by described sparger of described fuel.
13. the nozzle that is used for the LPI sparger as claimed in claim 9, wherein said spring component is made by the brass with high thermal conductivity energy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080121953A KR101000169B1 (en) | 2008-12-03 | 2008-12-03 | Nozzle for LPI injector |
| KR10-2008-0121953 | 2008-12-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101749145A true CN101749145A (en) | 2010-06-23 |
| CN101749145B CN101749145B (en) | 2013-11-06 |
Family
ID=42363382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102247597A Active CN101749145B (en) | 2008-12-03 | 2009-11-17 | Nozzle for LPI injector |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101000169B1 (en) |
| CN (1) | CN101749145B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486141A (en) * | 2010-12-02 | 2012-06-06 | 现代自动车株式会社 | Liquefied petroleum gas injector |
| CN102486149A (en) * | 2010-12-06 | 2012-06-06 | 现代自动车株式会社 | LPI ejector |
| CN102678390A (en) * | 2011-03-15 | 2012-09-19 | 株式会社日气 | Injector for gas fuel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200468036Y1 (en) * | 2013-02-27 | 2013-07-24 | 르노삼성자동차 주식회사 | Icing preventing tip and injector having the icing preventing tip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218980A (en) * | 1995-02-13 | 1996-08-27 | Nippondenso Co Ltd | Fuel injection device |
| WO2002066818A1 (en) * | 2001-02-22 | 2002-08-29 | Robert Bosch Gmbh | Fuel injection valve |
| KR20040083228A (en) * | 2003-03-21 | 2004-10-01 | 한국기계연구원 | Liquid phase lpg injector |
| CN1749552A (en) * | 2004-09-13 | 2006-03-22 | 现代自动车株式会社 | Fuel injection system |
| CN1833101A (en) * | 2003-06-11 | 2006-09-13 | 韦斯波特研究公司 | Valve device and method for injecting a gaseous fuel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100569929B1 (en) | 2003-06-30 | 2006-04-10 | 현대자동차주식회사 | Icing preventing device of injector |
| KR100692132B1 (en) * | 2004-12-17 | 2007-03-12 | 현대자동차주식회사 | Structure of cut-off solenoid injector |
-
2008
- 2008-12-03 KR KR1020080121953A patent/KR101000169B1/en active IP Right Grant
-
2009
- 2009-11-17 CN CN2009102247597A patent/CN101749145B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218980A (en) * | 1995-02-13 | 1996-08-27 | Nippondenso Co Ltd | Fuel injection device |
| WO2002066818A1 (en) * | 2001-02-22 | 2002-08-29 | Robert Bosch Gmbh | Fuel injection valve |
| KR20040083228A (en) * | 2003-03-21 | 2004-10-01 | 한국기계연구원 | Liquid phase lpg injector |
| CN1833101A (en) * | 2003-06-11 | 2006-09-13 | 韦斯波特研究公司 | Valve device and method for injecting a gaseous fuel |
| CN1749552A (en) * | 2004-09-13 | 2006-03-22 | 现代自动车株式会社 | Fuel injection system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486141A (en) * | 2010-12-02 | 2012-06-06 | 现代自动车株式会社 | Liquefied petroleum gas injector |
| CN102486141B (en) * | 2010-12-02 | 2016-03-02 | 现代自动车株式会社 | For the sparger of liquefied petroleum gas injection |
| CN102486149A (en) * | 2010-12-06 | 2012-06-06 | 现代自动车株式会社 | LPI ejector |
| CN102486149B (en) * | 2010-12-06 | 2016-02-10 | 现代自动车株式会社 | LPI ejector |
| CN102678390A (en) * | 2011-03-15 | 2012-09-19 | 株式会社日气 | Injector for gas fuel |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100063435A (en) | 2010-06-11 |
| KR101000169B1 (en) | 2010-12-10 |
| CN101749145B (en) | 2013-11-06 |
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