CN105971796A - Bore type oil sprayer of diesel engine and oil spraying method thereof - Google Patents
Bore type oil sprayer of diesel engine and oil spraying method thereof Download PDFInfo
- Publication number
- CN105971796A CN105971796A CN201610544419.2A CN201610544419A CN105971796A CN 105971796 A CN105971796 A CN 105971796A CN 201610544419 A CN201610544419 A CN 201610544419A CN 105971796 A CN105971796 A CN 105971796A
- Authority
- CN
- China
- Prior art keywords
- oil
- diesel
- diesel engine
- tank
- transiting 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
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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
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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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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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
- F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a bore type oil sprayer of a diesel engine and an oil spraying method thereof. The bore type oil sprayer is characterized in that an outer valve needle is movably arranged in a pressure chamber, wherein the outer valve needle is provided with a first tapered sealing part which is pressed on a first oil spraying bore; the pressure chamber is provided with an oil storing tank; an oil feeding bore is connected to the oil storing tank through an arc-shaped transition surface; a detention tank which is lower than the arc-shaped transition surface is arranged at the bottom part of the oil feeding hole. According to the bore type oil sprayer of the diesel engine, diesel in the oil feeding bore flows into the oil storing tank through the arc-shaped transition surface, and the hydraulic pressure varies slowly, so that parts can be prevented from being corroded; some diesel is stored in the detention tank; when external diesel enters, the oil pressure directly acts on the diesel in the detention tank, and thus the parts can be prevented from being damaged; a shaft shoulder part can guide the diesel to flow, so as to prevent the valve needle from being directly impacted by the diesel.
Description
Technical field
The present invention relates to fueling injection equipment, particularly relate to hole type nozzle and the fuel injecting method thereof of diesel engine.
Background technology
The valve body of atomizer includes pressure chamber and fuel feed hole, and this pressure chamber and fuel feed hole connect in the position of oil storage tank.In the prior art, oil storage tank is sharp-pointed with the connection shape of fuel feed hole, with reference to that injector nozzle matching parts of 201310285655.3.Diesel oil when fuel feed hole enters oil storage tank, easily this formation hole, sharp-pointed position (when cavitation refers to separate pressure when certain point pressure less than liquid institute air at temperature in liquid stream, be originally dissolved in the gas in liquid can separate produce bubble).The bubble that hole is formed may corrode part, has comparison to make improvements this.
Summary of the invention
The present invention proposes hole type nozzle and the fuel injecting method thereof of a kind of diesel engine, changes the attachment structure of oil storage tank and fuel feed hole, it is to avoid produces bubble and corrodes part.
The technical scheme is that and be achieved in that:
A kind of hole type nozzle of diesel engine, it is characterized in that including valve body, outer needle, described valve body is provided with pressure chamber, fuel feed hole and multiple first nozzle opening, described outer needle is movably disposed in described pressure chamber, described outer needle has the first conical seal, this first conical seal is pressed on described first nozzle opening, wherein, described pressure chamber has oil storage tank, described fuel feed hole is connected with described oil storage tank through an arc transiting surface, being provided with delay tank bottom this fuel feed hole, the height of this delay tank is less than described arc transiting surface.
In the hole type nozzle of the diesel engine of the present invention, described outer needle has shaft shoulder portion, and this shaft shoulder portion is positioned at described oil storage tank, and this shaft shoulder portion is positioned between described arc transiting surface and delay tank.
In the hole type nozzle of the diesel engine of the present invention, this hole type nozzle also includes inner valve needle, and this outer needle has sliding eye, and described inner valve needle is positioned at this sliding eye.
In the hole type nozzle of the diesel engine of the present invention, described valve body is additionally provided with the second spray orifice, and described inner valve needle has the second conical seal, and this second conical seal is pressed on described second nozzle opening.
A kind of cellular type fuel injecting method of diesel engine, it is characterized in that, the circulation track of diesel oil arranges arc transiting surface, delay tank is set in the lower section of arc transiting surface, the height of this delay tank is less than described arc transiting surface, guides diesel stream to enter delay tank before diesel oil sprays.
Implementing the hole type nozzle of this diesel engine of the present invention, have the advantages that the diesel oil in fuel feed hole flows into oil storage tank through arc transiting surface, hydraulic pressure is slowly varying, it is to avoid part weathers.Delay tank storage part diesel oil, when outside diesel oil enters, oil pressure acts directly on the diesel oil of delay, it is to avoid injuring part.Shaft shoulder portion bootable diesel oil flowing, it is to avoid diesel oil directly impacts needle.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the hole type nozzle of this diesel engine of the present invention；
Fig. 2 is the partial view of Fig. 1；
Fig. 3 is the schematic diagram of another state of Fig. 2；
Fig. 4 is the schematic diagram of another state of Fig. 2；
Fig. 5 is the schematic diagram of the valve body of Fig. 1；
Fig. 6 is the partial view of Fig. 5；
Fig. 7 is another partial view of Fig. 1, the attachment structure of main presentation fuel feed hole and pressure chamber；
Fig. 8 is the schematic diagram of the outer needle of Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Such as the hole type nozzle of this diesel engine of Fig. 1 to the present invention shown in 7, including valve body 100, outer needle 200.Described valve body 100 is provided with pressure chamber 110, fuel feed hole 120 and multiple first nozzle opening 130.Described outer needle 200 is movably disposed in described pressure chamber 110.Described outer needle 200 has the first conical seal 210, and this first conical seal 210 is pressed on described first nozzle opening 130.Atomizer can also have inner valve needle 300, and valve body 100 can also have the second nozzle opening 140.Second nozzle opening 140 can use the inner valve needle 300 different from outer needle to seal, and concrete scheme applicant proposes in other application cases.
Described pressure chamber 110 has oil storage tank 111, and described fuel feed hole 120 is connected with described oil storage tank 111 through an arc transiting surface 121, and the diesel oil in fuel feed hole 120 flows into oil storage tank 111 through arc transiting surface 121, and hydraulic pressure is slowly varying, it is to avoid part weathers.Being provided with delay tank 122 bottom this fuel feed hole 120, the height of this delay tank 122 is less than described arc transiting surface 121.Delay tank 122 stores part diesel oil, and when outside diesel oil enters, oil pressure acts directly on the diesel oil of delay, it is to avoid injuring part.Described outer needle 200 has shaft shoulder portion 240, and this shaft shoulder portion 240 is positioned at described oil storage tank 111, and this shaft shoulder portion 240 is between described arc transiting surface 121 and delay tank 122.Shaft shoulder portion 240 bootable diesel oil flowing, it is to avoid diesel oil directly impacts needle.
Described pressure chamber 110 includes oil storage tank 111 and flowline 112, and the medial wall of this flowline 112 has spiral helicine guiding gutter 113.Formed vaporific after the ejection of spiral helicine guiding gutter 113 beneficially diesel oil, it is ensured that diesel oil is fully contacted compressed air, improve efficiency of combustion.Described outer needle 200 is provided with spiral helicine water conservancy diversion rib 220.The rotation direction of water conservancy diversion rib 220 is contrary with guiding gutter 113, and this structure is conducive to the irregular disturbance of diesel oil in pressure chamber 110, it is simple to air-fuel mixture.Described valve body 100 has tapered portion 114, and this first nozzle opening 130 is positioned in described tapered portion 114, and described guiding gutter 113 includes a contraction section 115, and described first nozzle opening 130 of at least one is through this contraction section 115.Diesel oil is introduced directly in part nozzle opening by guiding gutter 113, and the diesel oil flow velocity at this and the flow direction are inconsistent with other positions, are conducive to the formation of turbulent flow, improve efficiency of combustion further.
In the present embodiment, this outer needle 200 has sliding eye 230, and described inner valve needle 300 is positioned at this sliding eye 230.Described inner valve needle 300 has the second conical seal 310, and this second conical seal 310 is pressed on described second nozzle opening 140.Described sliding eye 230 includes the first glissile segment 231 and the second glissile segment 232, and described inner valve needle 300 also includes the first shaft part 320 and the second shaft part 330.Described first shaft part 320 is between described second shaft part 330 and the second conical seal 310.Described first shaft part 320 is positioned at described first glissile segment 231, and described second shaft part 330 is positioned at described second glissile segment 232, and the diameter of this first glissile segment 231 is less than the diameter of described second shaft part 330.Driving means drives outer needle 200 to move, and the first conical seal 210 opens the first nozzle opening 130, and after needle 200 moves a segment distance outside, the first glissile segment 231 drives the second shaft part 330 to move, and forces the second conical seal 310 to open the second nozzle opening 140.Part oil outlet work ahead, has reached the purpose of pre-spray and main jet, has improve efficiency of combustion.Described first glissile segment 231 is connected with described second glissile segment 232 by an arcwall face 233.Segmental arc 233 can slow down the impact to inner valve needle 300 of the outer needle 200, slows down parts depreciation.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. the hole type nozzle of a diesel engine, it is characterized in that including valve body, outer needle, described valve body is provided with pressure chamber, fuel feed hole and multiple first nozzle opening, described outer needle is movably disposed in described pressure chamber, described outer needle has the first conical seal, this first conical seal is pressed on described first nozzle opening, wherein, described pressure chamber has oil storage tank, described fuel feed hole is connected with described oil storage tank through an arc transiting surface, being provided with delay tank bottom this fuel feed hole, the height of this delay tank is less than described arc transiting surface.
The hole type nozzle of diesel engine the most according to claim 1, it is characterised in that described outer needle has shaft shoulder portion, this shaft shoulder portion is positioned at described oil storage tank, and this shaft shoulder portion is positioned between described arc transiting surface and delay tank.
The hole type nozzle of diesel engine the most according to claim 1, it is characterised in that this hole type nozzle also includes inner valve needle, this outer needle has sliding eye, and described inner valve needle is positioned at this sliding eye.
The hole type nozzle of diesel engine the most according to claim 3, it is characterised in that described valve body is additionally provided with the second spray orifice, described inner valve needle has the second conical seal, and this second conical seal is pressed on described second nozzle opening.
5. the cellular type fuel injecting method of a diesel engine, it is characterized in that, the circulation track of diesel oil arranges arc transiting surface, delay tank is set in the lower section of arc transiting surface, the height of this delay tank is less than described arc transiting surface, guides diesel stream to enter delay tank before diesel oil sprays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610544419.2A CN105971796A (en) | 2016-07-12 | 2016-07-12 | Bore type oil sprayer of diesel engine and oil spraying method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610544419.2A CN105971796A (en) | 2016-07-12 | 2016-07-12 | Bore type oil sprayer of diesel engine and oil spraying method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971796A true CN105971796A (en) | 2016-09-28 |
Family
ID=56951368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610544419.2A Pending CN105971796A (en) | 2016-07-12 | 2016-07-12 | Bore type oil sprayer of diesel engine and oil spraying method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971796A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1212352B (en) * | 1960-02-20 | 1966-03-10 | Orange G M B H L | Fuel injection valve with fuel-controlled valve needle |
| CN1711416A (en) * | 2002-11-11 | 2005-12-21 | 罗伯特·博世有限公司 | Fuel injection valve for internal combustion engines |
| CN104334866A (en) * | 2012-06-05 | 2015-02-04 | 卡特彼勒发动机有限及两合公司 | Injection nozzle |
| CN205823520U (en) * | 2016-07-12 | 2016-12-21 | 江西汇尔油泵油嘴有限公司 | The hole type nozzle of diesel engine |
-
2016
- 2016-07-12 CN CN201610544419.2A patent/CN105971796A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1212352B (en) * | 1960-02-20 | 1966-03-10 | Orange G M B H L | Fuel injection valve with fuel-controlled valve needle |
| CN1711416A (en) * | 2002-11-11 | 2005-12-21 | 罗伯特·博世有限公司 | Fuel injection valve for internal combustion engines |
| CN104334866A (en) * | 2012-06-05 | 2015-02-04 | 卡特彼勒发动机有限及两合公司 | Injection nozzle |
| CN205823520U (en) * | 2016-07-12 | 2016-12-21 | 江西汇尔油泵油嘴有限公司 | The hole type nozzle of diesel engine |
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Application publication date: 20160928 |