CN2767688Y - Pencil type oil injector with multiple injection holes - Google Patents
Pencil type oil injector with multiple injection holes Download PDFInfo
- Publication number
- CN2767688Y CN2767688Y CN 200520100299 CN200520100299U CN2767688Y CN 2767688 Y CN2767688 Y CN 2767688Y CN 200520100299 CN200520100299 CN 200520100299 CN 200520100299 U CN200520100299 U CN 200520100299U CN 2767688 Y CN2767688 Y CN 2767688Y
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- oil
- needle
- injector body
- valve
- oil injector
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Abstract
The utility model discloses a pencil type oil injector with multiple injection holes, which comprises an oil injector body with an internal chamber, an oil inlet joint which is pressed with a filtering core, a needle valve, and an oil nozzle, wherein the oil injector body is sheathed with an O-shaped ring; the oil injector body is in a slim pencil holder structure, the needle valve which is matched with the internal chamber of the oil injector body is in a slim rod-shaped structure, the oil nozzle is in a minor diameter structure of multiple injection holes and is embedded into the front end chamber of the oil injector body; the back end of the oil injector body and the internal part of a sheathed tension cap chamber can be sequentially provided with a pressure adjusting shim, a pressure adjusting spring, a positioning pin, an intermediate body, and a stopper of the needle valve; the tension cap is provided with an oil drainage screw which is sheathed with a rubber sealing ring of a skeleton; the internal part of a groove on the periphery of the front end of the oil injection body is embedded with an anti-carbon ring; the oil inlet joint is screwed into the internal periphery of the tension cap and is butted with the stopper of the needle valve, and the O-shaped ring is sheathed between the oil inlet joint and the tension cap. The utility model has the characteristics of novel structure, small size, favorable performance, low fuel consumption, sufficient oil injection and atomization, little discharge, good reliability and long service life.
Description
Technical field
The utility model relates to oil sprayer, specifically relates to multi-orifice pencil-style fuel injectors.
Background technique
The porous type oil nozzle is the accurate device on the motor, and quality of fit is higher, and the quality of quality nozzle will directly influence normal use of motor and life-span.Existing porous type oil injector body structural design: the one, adopt short injector valve, the guiding position that makes needle-valve is near engine chamber, and needle-valve guiding position is subject to heat, the oil nozzle stuck phenomenon often occurs; Assembly has the more number of spare parts and the sealing surface of Assembly part, has reduced the sealing of assembly, and adopts higher cracking pressure, has increased the impact force of needle-valve to the oil nozzle seat surface, causes fault to increase, and reliability reduces; The 2nd, injection hole on injection nozzle quantity is few, and the aperture is big, so the atomizing of fuel oil is insufficient, is unfavorable for burning, increases oil consumption, increases the discharging of CO and HC, is difficult for reaching environment protection requirement.
The applying date is that " a kind of rotation needle-valve hole nozzle " (notification number is CN2413041Y) of the Chinese utility model patent ZL00206288.7 on March 22nd, 2000 just belongs to the oil sprayer of this class formation; It comprises plunger, plunger body, guide finger, rotary spool, valve body, oil pocket and spring, the tapering, lower end of valve body is provided with nozzle opening, spring is arranged on the plunger upper end, plunger body and valve body are located with locating stud, the convex body of plunger lower end is arranged in " bucket " shape structure of rotary spool upper end, is provided with oil duct in tapering, rotary spool lower end.It can't overcome the problems referred to above.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned deficiency, novel structure is provided, volume is little, performance good, oil consumption is low, discharging less, the multi-orifice pencil-style fuel injectors of good reliability and long service life.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: multi-orifice pencil-style fuel injectors, comprise the oil injector body with inner chamber, the fuel inlet fitting that is pressed with filter core, needle-valve, oil nozzle, oil injector body rear end periphery is with O type circle, and the technical measures of taking comprise:
A. described oil injector body is elongated penholder type structure, and the needle-valve that is complementary with this oil injector body inner chamber is elongated rod shaped structure, and described oil nozzle is many spray orifices minor diameter structure, is inlaid in the front end chamber of oil injector body;
In the tight cap chamber of b. described oil injector body rear end and suit mutually pressure regulation pad, pressure adjusting spring, locating stud, intermediate and needle-valve block are housed in order, the draining screw of suit skeleton rubber seal ring is housed on the described tight cap;
C. be embedded with anti-carbon ring in the described oil injector body front end peripheral groove;
D. described fuel inlet fitting screws in week in the tight cap, and connects with the needle-valve block, is with the O RunddichtringO between fuel inlet fitting and the tight cap.
For optimizing technique scheme, the measure of being taked also comprises:
For the guide portion distance of positions that makes needle-valve from the engine chamber better position, improved the situation of being heated at needle-valve guiding position better, stopped the oil nozzle stuck phenomenon; Above-mentioned oil injector body physical dimension diameter is 9.5mm～9.55mm, and long is 185mm～195mm; The needle valve structure size diameter is 3.98mm～3.99mm, and long is 134mm～135mm.
For circulation area in making obtains maximum value, augmented flow, the tilt angle is 15 ° between the common centreline of above-mentioned injection hole on injection nozzle and needle-valve axis, above-mentioned needle-valve seat surface diameter is 2.3mm～2.4mm; For effectively controlling delayed injection endurance and fuel injection quantity, reduce the impact force of working procedure, needle lift is 0.38 ± 0.05mm.
For more effectively guaranteeing the atomization quality of fuel oil, be beneficial to burning, reduce oil consumption, reduce the discharging of CO and HC, above-mentioned oil nozzle periphery all radian is shaped on 9 spray orifices, and the spray orifice aperture is 0.19mm～0.23mm, and the injection cone angle that constitutes between spray orifice in the plane is 145 ° ± 2 °; On the described oil nozzle between spray orifice medial axis and oil nozzle medial axis angle be respectively 84.18 ° ± 2 ° in 75.66 ° ± 2 °, No. 9 holes, 65.55 ° ± 2 °, No. 8 holes, 58.51 ° ± 2 °, No. 7 holes, 58.51 ° ± 2 °, No. 6 holes, 65.55 ° ± 2 °, No. 5 holes, 75.66 ° ± 2 °, No. 4 holes, 84.18 ° ± 2 °, No. 3 holes, 87.5 ° ± 2 °, No. 2 holes, No. 1 hole in proper order.
For more equipped, above-mentioned oil injector body front end periphery also is inserted in packing ring.
For reaching the atomizing effect of better fuel oil, above-mentioned injection hole on injection nozzle diameter is 0.207mm.
Compared with prior art, the utility model is that the oil injector body structural design adopts elongated penholder type by one, and adopts elongated injector valve, and the guiding position that makes needle-valve is away from engine chamber, improve the situation of being heated at needle-valve guiding position, stopped the oil nozzle stuck phenomenon; The 2nd, adopt no oil return apparatus, reduced the sealing surface of number of spare parts and Assembly part, improved the sealing of assembly, and needle-valve has lower cracking pressure, reduced the impact force of needle-valve to the oil nozzle seat surface, the fault-free reliability increases; The 3rd, oil nozzle adopts many spray orifices minor diameter structure, and the atomization quality of fuel oil is good like this, is beneficial to burning, reduces oil consumption, reduces the discharging of CO and HC, reaches environment protection requirement.It has novel structure, volume is little, performance good, oil consumption is low, oil atomizing is abundant, discharging less, the characteristics of good reliability and long service life.
Description of drawings
Fig. 1 is the utility model vertical profile structural representation;
Fig. 2 is a locating stud parts position vertical profile structural representation among Fig. 1;
Fig. 3 is oil nozzle enlarged view and a spray orifice distribution schematic diagram among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Structure of the present utility model is seen shown in the accompanying drawing 1～3.
Fig. 1 is the utility model vertical profile structural representation; As shown in Figure 1, multi-orifice pencil-style fuel injectors, comprise the oil injector body 13 with inner chamber, the fuel inlet fitting 2 that is pressed with filter core 1, needle-valve 14, oil nozzle 16, fuel inlet fitting 2 screws in week in the tight cap 10, and connect with needle-valve block 4, be with O RunddichtringO 3 between fuel inlet fitting 2 and the tight cap 10, for more equipped, oil injector body front end periphery also is inserted in packing ring 12; Oil injector body 13 rear end peripheries are with O type circle 11, in tight cap 10 chambeies of oil injector body 13 rear ends and suit mutually pressure regulation pad 9, pressure adjusting spring 7, locating stud 17, intermediate 8 and needle-valve block 4 are housed in order, the draining screw 5 of suit skeleton rubber seal ring 6 is housed on the tight cap 10; Oil injector body 13 front end peripheries also are inserted in packing ring 12, are embedded with anti-carbon ring 15 in the oil injector body 13 front end peripheral groove; The locations of structures of locating stud 17 as shown in Figure 2.Oil injector body 13 is elongated penholder type structure, and the needle-valve 14 that is complementary with these oil injector body 13 inner chambers is elongated rod shaped structure, and oil nozzle 16 is many spray orifices minor diameter structure, is inlaid in the front end chamber of oil injector body 13; For the guide portion distance of positions that makes needle-valve from the engine chamber better position, improved the situation of being heated at needle-valve guiding position better, stopped the oil nozzle stuck phenomenon; It is 9.5mm～9.55mm that oil injector body 13 physical dimensions are selected diameter, and long is 185mm～195mm; Needle-valve 14 physical dimension diameters are 3.98mm～3.99mm, and long is 134mm～135mm.
For circulation area in making obtains maximum value, augmented flow, the tilt angle is 15 ° between the common centreline of oil nozzle 16 spray orifice 16a and needle-valve 14 axis; Needle-valve 14 seat surface diameters are 2.3mm～2.4mm; For effectively controlling delayed injection endurance and fuel injection quantity, reduce the impact force of working procedure, needle lift is 0.38 ± 0.05mm.For more effectively guaranteeing the atomization quality of fuel oil, be beneficial to burning, reduce oil consumption, reduce the discharging of CO and HC, oil nozzle 16 peripheries all radian are that 40 ° of spaces are shaped on 9 spray orifice 16a, and as shown in Figure 3, spray orifice 16a aperture is 0.19mm～0.23mm, for reaching the atomizing effect of better fuel oil, oil nozzle 16 spray orifice 16a diameters are 0.207mm; And the injection cone angle that constitutes between spray orifice in the plane is 145 ° ± 2 °; On the oil nozzle 16 between spray orifice 16a medial axis and oil nozzle 16 medial axis angle be respectively 84.18 ° ± 2 ° in 75.66 ° ± 2 °, No. 9 holes, 65.55 ° ± 2 °, No. 8 holes, 58.51 ° ± 2 °, No. 7 holes, 58.51 ° ± 2 °, No. 6 holes, 65.55 ° ± 2 °, No. 5 holes, 75.66 ° ± 2 °, No. 4 holes, 84.18 ° ± 2 °, No. 3 holes, 87.5 ° ± 2 °, No. 2 holes, No. 1 hole in proper order.
The utility model assembly working principle is as follows:
The utility model assembly is used for diesel engine with direct injection, during work the high pressure fuel of diesel injection pump with compression, enter oil sprayer fuel inlet fitting 2 through high-pressure oil pipe and after filter core 1 filters, and along needle-valve block 4, intermediate 8 oil ducts enter oil injector body 13 high-voltage oil cavities, the final needle-valve 14 sealing cone positions that arrive, when pressure surpasses needle-valve 14 cracking pressures, needle-valve 14 rises fuel oil and sprays from oil nozzle 16 spray orifice 16a, needle-valve 14 is taken a seat when the pressure in the high-pressure oil passage is lower than needle-valve 14 cracking pressures, end of injection, Injection Pump revolution moving one changes i.e. once high-pressure oil feed, and the utility model is promptly finished once with the fuel feeding of Injection Pump synchronously and sprayed.
The technical measures that the processing of the utility model assembly critical piece should be taked:
1. should improve the accuracy to shape of inlet connector 2 conical surfaces, surface roughness, sealing, reliability when guaranteeing assembly installation use;
2. oil nozzle 16 spray orifice 16a are carried out numerical control machine tool processing; Divide spray orifice three process disposable processing, promptly feel relieved, boring, reaming.Pore size and angular orientation have been guaranteed; Carry out crush and grind processing after the heat treatment again, the flow and the uniformity conformity thereof of raising and stable injection hole on injection nozzle; Improve the emission performance of diesel engine, reduce engine fuel consumption;
3. the utility model assembly to the installation end face of assembly, once grinds processing before the packing again after debugging finishes, and to guarantee the perpendicularity of end face, guarantees the sealing of installing;
4. mounting unit assembly is increased smooth operation with pad, the planeness of pad and the parallelism on two sides all are controlled in the 0.03mm scope, the sealing when guaranteeing to install use;
5. oil injector body 13 materials adopt superior alloy steel, and its advantage is that cutting ability is good, the temper resistance height, and oil injector body adopts localized carburizing, localized quench hardening, promptly guarantees quality of product, again can simplified processing process;
6. the mill processing technology is adopted at 26 ° of angles of tight cap 10, guarantees the accuracy of angle, has prevented the oil nozzle stuck phenomenon during assembling;
7. intermediate 8 both ends of the surface adopt the flat machine that grinds to grind and guaranteed both ends of the surface parallelism 0.013mm and planeness 0.0015mm;
8. injector valve 14 adopts and rolls the chromium Bearing Steel, and its seat surface and seat surface sealed diameter people having a common goal working procedure processing make needle-valve seat surface and seat surface sealed diameter coaxality obtain fine assurance, and spraying sealing up-to-standard rate is played a role during to assembling.
The utility model is that the oil injector body structural design adopts elongated penholder type by one, and adopts elongated injector valve, and the situation of being heated at needle-valve guiding position has been improved away from engine chamber in the guiding position that makes needle-valve, has stopped the oil nozzle stuck phenomenon; The 2nd, adopt no oil return apparatus, reduced the sealing surface of number of spare parts and Assembly part, improved the sealing of assembly, and needle-valve has lower cracking pressure (15.17MPa), reduced the impact force of needle-valve to the oil nozzle seat surface, the fault-free reliability reaches more than the 1000h; The 3rd, oil nozzle adopts many spray orifices minor diameter structure, and the atomization quality of fuel oil is good like this, is beneficial to burning, reduces oil consumption, reduces the discharging of CO and HC, reaches environment protection requirement.It has novel structure, volume is little, performance good, oil consumption is low, oil atomizing is abundant, discharging less, the characteristics of good reliability and long service life.
Though the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (7)
1, multi-orifice pencil-style fuel injectors comprises the oil injector body (13) with inner chamber, the fuel inlet fitting (2) that is pressed with filter core (1), needle-valve (14), oil nozzle (16), and oil injector body (13) rear end periphery is with O type circle (11), it is characterized in that:
A. described oil injector body (13) is elongated penholder type structure, the needle-valve (14) that is complementary with this oil injector body (13) inner chamber is elongated rod shaped structure, described oil nozzle (16) is many spray orifices minor diameter structure, is inlaid in the front end chamber of oil injector body (13);
In tight cap (10) chamber of b. described oil injector body (13) rear end and suit mutually pressure regulation pad (9), pressure adjusting spring (7), locating stud (17), intermediate (8) and needle-valve block (4) are housed in order, the draining screw (5) of suit skeleton rubber seal ring (6) is housed on the described tight cap (10);
C. be embedded with anti-carbon ring (15) in described oil injector body (13) the front end peripheral groove;
D. described fuel inlet fitting (2) screws in week in the tight cap (10), and connects with needle-valve block (4), is with O RunddichtringO (3) between fuel inlet fitting (2) and the tight cap (10).
2, multi-orifice pencil-style fuel injectors according to claim 1 is characterized in that: described oil injector body (13) physical dimension diameter is 9.5mm～9.55mm, and long is 185mm～195mm; Needle-valve (14) physical dimension diameter is 3.98mm～3.99mm, and long is 134mm～135mm.
3, multi-orifice pencil-style fuel injectors according to claim 1 is characterized in that: the tilt angle is 15 ° between the common centreline of described oil nozzle (16) spray orifice (16a) and needle-valve (14) axis; Described needle-valve (14) seat surface diameter is 2.3mm～2.4mm, and needle-valve (14) lift is 0.38 ± 0.05mm.
4, multi-orifice pencil-style fuel injectors according to claim 2 is characterized in that: the tilt angle is 15 ° between the common centreline of described oil nozzle (16) spray orifice (16a) and needle-valve (14) axis; Described needle-valve (14) seat surface diameter is 2.3mm～2.4mm, and needle-valve (14) lift is 0.38 ± 0.05mm.
5, according to the described multi-orifice pencil-style fuel injectors of the arbitrary claim of claim 1 to 4, it is characterized in that: described oil nozzle (16) periphery all radian is shaped on 9 spray orifices (16a), spray orifice (16a) aperture is 0.19mm～0.23mm, and the injection cone angle that constitutes between spray orifice in the plane is 145 ° ± 2 °.Angle is respectively 84.18 ° ± 2 ° in 75.66 ° ± 2 °, No. 9 holes, 65.55 ° ± 2 °, No. 8 holes, 58.51 ° ± 2 °, No. 7 holes, 58.51 ° ± 2 °, No. 6 holes, 65.55 ° ± 2 °, No. 5 holes, 75.66 ° ± 2 °, No. 4 holes, 84.18 ° ± 2 °, No. 3 holes, 87.5 ° ± 2 °, No. 2 holes, No. 1 hole in proper order between last spray orifice (16a) medial axis of described oil nozzle (16) and oil nozzle (16) medial axis.
6, multi-orifice pencil-style fuel injectors according to claim 5 is characterized in that: described oil injector body (13) front end periphery also is inserted in packing ring (12).
7, multi-orifice pencil-style fuel injectors according to claim 5 is characterized in that: described oil nozzle (16) spray orifice (16a) diameter is 0.207mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100299 CN2767688Y (en) | 2005-01-26 | 2005-01-26 | Pencil type oil injector with multiple injection holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100299 CN2767688Y (en) | 2005-01-26 | 2005-01-26 | Pencil type oil injector with multiple injection holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2767688Y true CN2767688Y (en) | 2006-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520100299 Expired - Lifetime CN2767688Y (en) | 2005-01-26 | 2005-01-26 | Pencil type oil injector with multiple injection holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2767688Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334344C (en) * | 2005-01-26 | 2007-08-29 | 周书田 | Multi-orifice pencil-style fuel injectors |
-
2005
- 2005-01-26 CN CN 200520100299 patent/CN2767688Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334344C (en) * | 2005-01-26 | 2007-08-29 | 周书田 | Multi-orifice pencil-style fuel injectors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050126 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |