CN103362710A - Variable spray hole type electric control oil sprayer - Google Patents
Variable spray hole type electric control oil sprayer Download PDFInfo
- Publication number
- CN103362710A CN103362710A CN2013100998780A CN201310099878A CN103362710A CN 103362710 A CN103362710 A CN 103362710A CN 2013100998780 A CN2013100998780 A CN 2013100998780A CN 201310099878 A CN201310099878 A CN 201310099878A CN 103362710 A CN103362710 A CN 103362710A
- Authority
- CN
- China
- Prior art keywords
- oil
- needle valve
- needle
- valve
- sealing surface
- 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.)
- Pending
Links
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The invention aims at providing a variable spay hole type electric control oil sprayer which comprises an electric control actuator part, an oil nozzle and an oil sprayer body, wherein the electric control actuator part and the oil nozzle are mounted at the upper end and the lower end of the oil sprayer body respectively; the oil nozzle comprises a needle valve and a needle valve base; the needle valve is mounted in the needle valve base; an oil containing groove is formed by the needle valve and the needle valve base; main oil spray holes and auxiliary oil spray holes are formed at the lower end part of the needle valve base from the bottom up sequentially; a double sealing surface structure is arranged at the lower end part of the needle valve; a bevelled sealing surface and a cylindrical sealing surface are arranged at the lower end part of the needle valve from the top down sequentially; when the needle valve is positioned at the undermost end of a stroke, the cylindrical sealing surface seals the main oil spray holes, and the bevelled sealing surface seals the auxiliary oil spray holes; and when the needle valve ascends, the auxiliary oil spray holes are communicated with the oil containing groove earlier than the main oil spray holes. The oil sprayer facilitates controlling small oil quantity spray in a multi-spray process, and can allow main spray to be combined with boot type spray, so that an oil spray effect is improved, the power performance and the economical efficiency of an engine are improved, and stricter discharge laws and regulations are met.
Description
Technical field
What the present invention relates to is a kind of diesel engine, specifically the oil sprayer of diesel engine.
Background technique
In recent years, along with the increasingly stringent of Abgasgesetz and the fast development of electron controls technology, electric-controlled fuel injector is widely used in diesel fuel system.Automatically controlled actuator response is quick, can control fast and accurately Fuel Injection Quantity for Diesel and fuel injection characteristic, and then improve engine fuel economy and power character, and reduce the discharging of harmful substance in the working procedure.
The diesel engine electric-controlled oil ejector of using at present is the switching by the control chamber draining oil circuit of automatically controlled final controlling element control oil sprayer, and then reach the adjusting fuel injection quantity, change the purpose of fuel injection characteristic, the action of automatically controlled final controlling element has determined the injection phase of oil sprayer constantly, and current"on"time, length determined the size of fuel injection quantity.Although the response of the diesel engine electric-controlled oil ejector of at present extensive use rapidly, injection characteristics are flexible, improved the power character of diesel engine and economical with respect to positive injector, but also Shortcomings part: 1, because its control to oil mass is to rely on the control signal pulsewidth that changes automatically controlled final controlling element to carry out fully, so that little oil mass is sprayed control accuracy and the speed of response of automatically controlled final controlling element are had relatively high expectations, control to little fuel injection quantity is accurate not, causes little oil mass injection and the multi-injection effect of diesel engine relatively poor; 2, can only change injection characteristics by the form that changes control signal, make control procedure comparatively complicated.
Summary of the invention
The object of the present invention is to provide be applied to diesel fuel system, spray pattern flexibly and the variable orifice type electric-controlled fuel injector that can accurately control little fuel injection quantity.
The object of the present invention is achieved like this:
The variable orifice type electric-controlled fuel injector of the present invention, comprise automatically controlled final controlling element part, oil nozzle, oil injector body, automatically controlled final controlling element part, oil nozzle is installed in respectively the up and down two ends of oil injector body, it is characterized in that: oil nozzle comprises needle-valve, the needle-valve base, needle-valve is installed in the needle-valve base and with the needle-valve base and forms oil holding slot, the underpart of needle-valve base has main jet oilhole and secondary nozzle opening from bottom to up successively, the needle-valve underpart is the double-sealing face structure, under upper, be followed successively by conical seal (contact) face and cylindricality sealing surface, when needle-valve is positioned at stroke bottom the time, cylindricality sealing surface sealing main jet oilhole, conical seal (contact) face sealing pair nozzle opening, when needle-valve rose, secondary nozzle opening was communicated with oil holding slot prior to the main jet oilhole.
The present invention can also comprise:
1, the diameter of secondary nozzle opening is 0.5-0.8mm, and the diameter of main jet oilhole is 1.0-1.5mm.
Advantage of the present invention is: the present invention hour only opens secondary nozzle opening when fuel injection quantity and carries out oil spout, can accurately control little fuel injection quantity; When fuel injection quantity is larger, in succession open pair, the main jet oilhole carries out oil spout, can by simple control signal realize slow first after anxious boot last spray.Not only be conducive in the multi-injection process little oil mass injection be controlled, main injection is sprayed with boot last combine, realize that combination is sprayed with rule, and then improve the oil spout effect, improve power character and the Economy of motor, satisfy stricter Abgasgesetz.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is oil nozzle schematic diagram of the present invention;
Fig. 3 a is nozzle opening of the present invention place partial enlarged drawing, and Fig. 3 b is the needle-valve partial schematic diagram.
Embodiment
For example the present invention is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～3, variable orifice type electric-controlled fuel injector of the present invention is comprised of automatically controlled final controlling element part 1, oil injector body 4 and oil nozzle 3.Automatically controlled final controlling element part 1 is positioned at oil injector body 4 tops, by injection timing and the fuel injection quantity of reception control signal control oil sprayer.Oil nozzle 3 is positioned at oil injector body 4 belows, links to each other with oil injector body 4 by tight cap 2.Oil nozzle 3 comprises needle-valve 9 and injector valve base 5, forms oil holding slot 6 between the two, is communicated with oil-feed oil circuit and nozzle opening respectively.There are two row's nozzle openings injector valve base 5 lower ends, and upper row is secondary nozzle opening 7, and diameter is 0.5-0.8mm, and lower row is main jet oilhole 8, and diameter is 1.0-1.5mm.Needle-valve 9 has the double-sealing face structure, and wherein the conical seal (contact) face 11 of top is used for sealing pair nozzle opening 7, and the cylindricality sealing surface 12 of below is used for sealing main jet oilhole 8.
When the required fuel injection quantity of system hour, the energising of automatically controlled final controlling element 1 is shorter actuation time, needle-valve 9 lifts are less, at this moment, the cylindricality sealing surface 12 of needle-valve 9 does not break away from the main jet oilhole sealed seat surface 10 of injector valve base below, only have upper row's secondary nozzle opening 7 to be unlocked, secondary nozzle opening 7 diameter less, injection rate is lower, make little fuel injection quantity require to reduce to control accuracy and the speed of response of automatically controlled final controlling element 1, can control more accurately the injection of little fuel injection quantity, thereby improve the oil spout effect that the medium and small oil mass of multi-injection is sprayed, and then power character and the Economy of raising diesel engine, satisfy stricter Abgasgesetz.
When the required fuel injection quantity of system was larger, the energising of automatically controlled final controlling element 1 was longer actuation time, and needle-valve 9 lifts are larger.When needle-valve 9 had just lifted, main jet oilhole 8 still was in closed condition, only had secondary nozzle opening 7 to open and carried out oil spout, and this moment, circulation area was less, and injection rate is lower.Along with the continuation of needle-valve 9 is risen, when its cylindricality sealing surface 12 broke away from main jet oilhole sealed seat surface 10 fully, main jet oilhole 8 also was unlocked.At this moment, the simultaneously oil spout of major and minor nozzle opening, injection rate is higher.Therefore, oil sprayer of the present invention is by in succession opening the form of secondary nozzle opening 7 and main jet oilhole 8, do not need to use complicated control signal and can realize that just the boot last that delays first rear urgency sprays, reduced the control difficulty of system, combine with the main injection of multi-injection and can also realize that combination is sprayed with rule, further improves the service behaviour of diesel engine.
Claims (2)
1. variable orifice type electric-controlled fuel injector, comprise automatically controlled final controlling element part, oil nozzle, oil injector body, automatically controlled final controlling element part, oil nozzle is installed in respectively the up and down two ends of oil injector body, it is characterized in that: oil nozzle comprises needle-valve, the needle-valve base, needle-valve is installed in the needle-valve base and with the needle-valve base and forms oil holding slot, the underpart of needle-valve base has main jet oilhole and secondary nozzle opening from bottom to up successively, the needle-valve underpart is the double-sealing face structure, under upper, be followed successively by conical seal (contact) face and cylindricality sealing surface, when needle-valve is positioned at stroke bottom the time, cylindricality sealing surface sealing main jet oilhole, conical seal (contact) face sealing pair nozzle opening, when needle-valve rose, secondary nozzle opening was communicated with oil holding slot prior to the main jet oilhole.
2. variable orifice type electric-controlled fuel injector according to claim 1, it is characterized in that: the diameter of secondary nozzle opening is 0.5-0.8mm, the diameter of main jet oilhole is 1.0-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100998780A CN103362710A (en) | 2013-03-26 | 2013-03-26 | Variable spray hole type electric control oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100998780A CN103362710A (en) | 2013-03-26 | 2013-03-26 | Variable spray hole type electric control oil sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103362710A true CN103362710A (en) | 2013-10-23 |
Family
ID=49364804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100998780A Pending CN103362710A (en) | 2013-03-26 | 2013-03-26 | Variable spray hole type electric control oil sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103362710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153599A (en) * | 2021-05-17 | 2021-07-23 | 一汽解放汽车有限公司 | Engine oil nozzle structure and assembling method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1249600A2 (en) * | 2001-04-11 | 2002-10-16 | Toyota Jidosha Kabushiki Kaisha | Fuel injection control system for internal combustion engine and method |
| EP1283336A2 (en) * | 2001-08-06 | 2003-02-12 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
| CN101365875A (en) * | 2006-03-14 | 2009-02-11 | 丰田自动车株式会社 | Fuel injection control device for internal combustion engine |
| CN101657630A (en) * | 2007-04-13 | 2010-02-24 | 丰田自动车株式会社 | Fuel injection valve for internal combustion engine |
| CN202325953U (en) * | 2011-11-23 | 2012-07-11 | 哈尔滨工程大学 | Low-returning-oil electromagnetic control oil injector |
| CN102734026A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Double-seat multiple-atomizing nozzle |
-
2013
- 2013-03-26 CN CN2013100998780A patent/CN103362710A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1249600A2 (en) * | 2001-04-11 | 2002-10-16 | Toyota Jidosha Kabushiki Kaisha | Fuel injection control system for internal combustion engine and method |
| EP1283336A2 (en) * | 2001-08-06 | 2003-02-12 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
| CN101365875A (en) * | 2006-03-14 | 2009-02-11 | 丰田自动车株式会社 | Fuel injection control device for internal combustion engine |
| CN101657630A (en) * | 2007-04-13 | 2010-02-24 | 丰田自动车株式会社 | Fuel injection valve for internal combustion engine |
| CN202325953U (en) * | 2011-11-23 | 2012-07-11 | 哈尔滨工程大学 | Low-returning-oil electromagnetic control oil injector |
| CN102734026A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Double-seat multiple-atomizing nozzle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153599A (en) * | 2021-05-17 | 2021-07-23 | 一汽解放汽车有限公司 | Engine oil nozzle structure and assembling method thereof |
| CN113153599B (en) * | 2021-05-17 | 2024-04-09 | 一汽解放汽车有限公司 | Engine oil nozzle structure and assembly method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104018966B (en) | Pressure accumulation current-limiting type electromagnetic control oil sprayer | |
| CN103244322B (en) | Dual-fuel electromagnetic and piezoelectric control type injector | |
| CN102364080A (en) | Multistage throttling pressure-stabilizing electric control fuel injector | |
| CN104018964A (en) | Pressure accumulation flow-limiting type piezoelectric control oil sprayer | |
| CN103429877A (en) | Method for determining the force conditions at the nozzle needle of a directly driven piezo injector | |
| CN104018965A (en) | Electromagnetic control pressure-storage and pressure-stabilizing oil sprayer | |
| CN103244321B (en) | Dual-fuel dual-piezoelectric control type injector | |
| CN102434346A (en) | Low oil-return type electromagnetic control oil sprayer | |
| CN102374085A (en) | Low oil return type piezoelectric control fuel injector | |
| CN203925849U (en) | Piezoelectricity is controlled pressure accumulation constant-voltage type oil sprayer | |
| CN103362710A (en) | Variable spray hole type electric control oil sprayer | |
| CN203892092U (en) | Pressure accumulating and flow limiting electromagnetic control oil atomizer | |
| CN104612875A (en) | Novel high flow injector nozzle matching parts of common rail injector | |
| CN105351115B (en) | No leakage voltage control standard fuel gas ejecting device | |
| CN202325953U (en) | Low-returning-oil electromagnetic control oil injector | |
| CN202325952U (en) | Multilevel throttling and voltage stabilizing oil injector | |
| CN104196664A (en) | Conical surface sealed high pressure common rail fuel injector controller | |
| CN103615344A (en) | Diesel injector capable of successively injecting oil | |
| CN103306871B (en) | A kind of Hydraulically-assistquick quick on-off electrical control oil injector for diesel engine and method thereof | |
| CN206668415U (en) | A kind of pump rail valve ozzle novel diesel spraying system used for diesel engine | |
| CN203867753U (en) | Oil sprayer | |
| CN202325954U (en) | Low-fuel return type piezoelectric control fuel injector | |
| CN201496188U (en) | Electric control diesel fuel injector driven by electrostriction element | |
| CN203925839U (en) | Pressure accumulation current-limiting type piezoelectric control fuel injector | |
| CN205478050U (en) | Sprayer injector nozzle matching parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131023 |
|
| WD01 | Invention patent application deemed withdrawn after publication |