CN102305162A - Oil nozzle assembly of diesel engine - Google Patents
Oil nozzle assembly of diesel engine Download PDFInfo
- Publication number
- CN102305162A CN102305162A CN201110237762A CN201110237762A CN102305162A CN 102305162 A CN102305162 A CN 102305162A CN 201110237762 A CN201110237762 A CN 201110237762A CN 201110237762 A CN201110237762 A CN 201110237762A CN 102305162 A CN102305162 A CN 102305162A
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- Prior art keywords
- oil
- injector
- oil nozzle
- valve
- needle valve
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Abstract
The invention relates to an oil nozzle assembly of a diesel engine. The oil nozzle assembly comprises an oil nozzle body (1), an oil nozzle needle valve (2), a needle valve guide rod (3), a needle valve spring (4), an oil injector body (5), an oil injector middleware (6) and gland nuts (7), wherein the oil nozzle body (1), the oil nozzle needle valve (2) and the needle valve guide rod (3) form a hydraulic balance oil nozzle assembly; the oil nozzle needle valve (2) is arranged in the oil nozzle body (1) and is internally provided with the needle valve guide rod (3); the hydraulic balance oil nozzle assembly is arranged below the oil injector middleware (6); the needle valve spring (4) is arranged at the root of the oil nozzle needle valve (2); and the oil injector middleware (6) and the hydraulic balance oil nozzle assembly are arranged below the oil injector body (5) by virtue of the gland nuts (7). The oil nozzle assembly provided by the invention has the advantages that the D-value between the closing pressure and opening pressure of the needle valve is reduced, the closing response speed of the needle valve can be increased, and the oil injection closing response speed can be improved by 10%.
Description
Technical field
The invention belongs to parts on the diesel engine, be specifically related to a kind of injector nozzle matching parts of diesel engine.
Background technique
Along with the raising of engine speed, the oil spout absolute time of oil supply system reduces.The fuel oil quality that guarantees demand can be sprayed onto in the cylinder and the multi-injection ability that realizes under the high rotating speed timely, and all the speed of response to the oil sprayer injection process has proposed high requirement.
Electromagnetic valve type fuel injector is high pressure co-rail system important composition parts of new generation.It adopts high-speed electromagnetic valve can control the fuel injection moment and circulating fuel injection quantity flexibly.Yet, the oil spout control mode of the variation in pressure through regulating control chamber because exist certain fluid power to postpone, caused the oil spout opening and closing constantly and solenoid valve open with closing control and all have certain delay.Oil spout is opened the optimization of matching that postpones with closing delay and is often had contradiction again.Through increasing needle valve spring rigidity, improve injector valve response closing speed, but caused the injector valve opening resistance to increase, the unlatching that has increased injector valve postpones.Through other Parameter Optimization coupling, also only can improve the speed of response of opening or closing, also possibly bring other adverse effect simultaneously.Through increasing control chamber oil inlet quantity hole area, can improve response closing speed, but bring slack-off the confirming that loss increases with high pressure fuel of open response simultaneously.On the contrary, minimizing recirculating oil quantity hole area can reduce closes delay and high pressure fuel loss, but has increased the unlatching delay of oil spout.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned deficiency, and a kind of injector nozzle matching parts of diesel engine is provided, and this injector nozzle matching parts has reduced the difference of needle-valve closing pressure and needle opening pressure, can improve the response closing speed of needle-valve.
Technological scheme of the present invention: a kind of injector nozzle matching parts of diesel engine; It comprises the oil nozzle body; Injector valve; The needle-valve guide rod; Needle valve spring; Oil injector body; Oil sprayer middleware and clamping nut; The oil nozzle body; Injector valve and needle-valve guide rod are formed hydraulic resistance balance formula injector nozzle matching parts; Injector valve is arranged in the oil nozzle body; Be provided with the needle-valve guide rod in the injector valve; Hydraulic resistance balance formula injector nozzle matching parts is arranged on oil sprayer intermediate below; Needle valve spring is arranged on the root of injector valve, and oil sprayer intermediate and hydraulic resistance balance formula injector nozzle matching parts are arranged on the oil injector body below through clamping nut.
The present invention compared with prior art has following beneficial effect: the present invention is through optimizing the structural design of injector nozzle matching parts; On existing needle valve of fuel spray nozzle coupling part, increase the needle-valve guide rod; Form the hydraulic resistance balance valve with former injector valve; This injector valve is being held open and is closing in the closed procedure; The pressure in the following space of injector valve sealed diameter is constant; Reduced the difference of needle-valve closing pressure and needle opening pressure; Can improve the response closing speed of needle-valve, oil spout response closing speed can improve 10%.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of hydraulic resistance balance formula injector nozzle matching parts among the present invention.
Embodiment
A kind of injector nozzle matching parts of diesel engine; It comprises oil nozzle body 1; Injector valve 2; Needle-valve guide rod 3; Needle valve spring 4; Oil injector body 5; Oil sprayer middleware 6 and clamping nut 7; Oil nozzle body 1; Injector valve 2 and needle-valve guide rod 3 are formed hydraulic resistance balance formula injector nozzle matching parts; Injector valve 2 is arranged in the oil nozzle body 3; Be provided with needle-valve guide rod 3 in the injector valve 2; Hydraulic resistance balance formula injector nozzle matching parts is arranged on oil sprayer intermediate 6 belows; Needle valve spring 4 is arranged on the root of injector valve 2, and oil sprayer intermediate 6 is arranged on oil injector body 5 belows with hydraulic resistance balance formula injector nozzle matching parts through clamping nut 7.Needle-valve guide rod 3 is pressed on injector valve 2 heads all the time, keeps oil nozzle head pressure no change, has reduced needle-valve and has closed the hydraulic coupling that process need overcomes, and can improve injector valve response closing speed.Because outer valve motion is only arranged in the injection process, and the quality of movement parts has reduced by 20%, has further improved the speed of response of injector valve.
Claims (1)
1. the injector nozzle matching parts of a diesel engine; It comprises oil nozzle body (1); Injector valve (2); Needle-valve guide rod (3); Needle valve spring (4); Oil injector body (5); Oil sprayer middleware (6) and clamping nut (7); It is characterized in that oil nozzle body (1); Injector valve (2) and needle-valve guide rod (3) are formed hydraulic resistance balance formula injector nozzle matching parts; Injector valve (2) is arranged in the oil nozzle body (3); Be provided with needle-valve guide rod (3) in the injector valve (2); Hydraulic resistance balance formula injector nozzle matching parts is arranged on oil sprayer intermediate (6) below; Needle valve spring (4) is arranged on the root of injector valve (2), and oil sprayer intermediate (6) and hydraulic resistance balance formula injector nozzle matching parts are arranged on oil injector body (5) below through clamping nut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110237762A CN102305162A (en) | 2011-08-19 | 2011-08-19 | Oil nozzle assembly of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110237762A CN102305162A (en) | 2011-08-19 | 2011-08-19 | Oil nozzle assembly of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102305162A true CN102305162A (en) | 2012-01-04 |
Family
ID=45379059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110237762A Pending CN102305162A (en) | 2011-08-19 | 2011-08-19 | Oil nozzle assembly of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102305162A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288105A (en) * | 1999-09-09 | 2001-03-21 | 汪峰 | Common rail type electrically controlled injector |
| US6247452B1 (en) * | 1997-10-09 | 2001-06-19 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| US20020033423A1 (en) * | 2000-04-28 | 2002-03-21 | Siegfried Ruthardt | Common rail injector |
| CN1759236A (en) * | 2003-03-21 | 2006-04-12 | 罗伯特·博世有限公司 | The Fuelinjection nozzle that is used for internal-combustion engine |
| DE102005046665A1 (en) * | 2005-09-29 | 2007-04-05 | Robert Bosch Gmbh | Fuel injection valve for e.g. self-ignition internal combustion engine, has inclined groove formed at valve seat near guide section of inner needle, such that tangential force is exerted on needle during flow of fuel |
| CN101080568A (en) * | 2004-12-16 | 2007-11-28 | 罗伯特·博世有限公司 | Fuel injection valve for an internal combustion engine |
| DE102006046833A1 (en) * | 2006-10-02 | 2008-04-03 | Robert Bosch Gmbh | Fuel injection valve for combustion engine, has armature provided with annular slot on outer wall surface |
-
2011
- 2011-08-19 CN CN201110237762A patent/CN102305162A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6247452B1 (en) * | 1997-10-09 | 2001-06-19 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| CN1288105A (en) * | 1999-09-09 | 2001-03-21 | 汪峰 | Common rail type electrically controlled injector |
| US20020033423A1 (en) * | 2000-04-28 | 2002-03-21 | Siegfried Ruthardt | Common rail injector |
| CN1759236A (en) * | 2003-03-21 | 2006-04-12 | 罗伯特·博世有限公司 | The Fuelinjection nozzle that is used for internal-combustion engine |
| CN101080568A (en) * | 2004-12-16 | 2007-11-28 | 罗伯特·博世有限公司 | Fuel injection valve for an internal combustion engine |
| DE102005046665A1 (en) * | 2005-09-29 | 2007-04-05 | Robert Bosch Gmbh | Fuel injection valve for e.g. self-ignition internal combustion engine, has inclined groove formed at valve seat near guide section of inner needle, such that tangential force is exerted on needle during flow of fuel |
| DE102006046833A1 (en) * | 2006-10-02 | 2008-04-03 | Robert Bosch Gmbh | Fuel injection valve for combustion engine, has armature provided with annular slot on outer wall surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |