CN202203015U - Novel fuel injector assembly - Google Patents
Novel fuel injector assembly Download PDFInfo
- Publication number
- CN202203015U CN202203015U CN2011203191816U CN201120319181U CN202203015U CN 202203015 U CN202203015 U CN 202203015U CN 2011203191816 U CN2011203191816 U CN 2011203191816U CN 201120319181 U CN201120319181 U CN 201120319181U CN 202203015 U CN202203015 U CN 202203015U
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- needle
- oil
- valve body
- hole
- valve
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Abstract
The utility model provides a novel fuel injector assembly, relating to the oil injection field of a diesel engine oil supply system. The novel fuel injector assembly comprises a fuel injector body (5), a fuel injector inlet (14), a fuel injector inlet channel (10), a retaining nut (2), a needle valve body (1), a needle valve (11), a needle valve body fuel inlet hole (13), and a transitional plate (3) arranged between the bottom surface of the fuel injector body (5) and the needle valve body (1), wherein the a central hole is arranged on the transitional plate (3) for enabling the tail part of the needle valve (11) to penetrate through, an inclined through hole (12) is arranged on the transitional plate (3), the upper end of the inclined through hole (12) is communicated with the fuel injector inlet channel (10), and the lower end of the inclined through hole (12) is communicated with the needle valve body fuel inlet hole (13). A flange plate mounting mode is adopted, a pressure adjusting screw is in screwed-in pressure regulation, the pressure regulation is convenient, the structure intensity is good, and the motion inertia is low. The mounting mode of the original engine is not changed, and the fuel consumption and emission of the engine can reach the national II-level emission standards.
Description
Technical field
The utility model relates to the injection system field of fuel system for diesel engine, relates to a kind of novel injector assembly particularly.
Background technique
In the existing technology, diesel engine oil supply system uses S series injector assembly, P series injector assembly in a large number.S series injector assembly is the flange plate mounting type, and voltage regulating mode is the pressure regulating screw screw-in, and this structure oil sprayer pressure regulation is convenient, and structural strength is good, but inertia is big; P series injector assembly is the pressing plate mounting type, adopts the pressure regulation of pressure regulation gasket type, and the loaded down with trivial details but movement inertia of this oil sprayer pressure regulation is less than S series injector assembly.S series injector assembly inertia is big and the pressure regulation of P series injector assembly is loaded down with trivial details, can not satisfy the needs of modern production.
Summary of the invention
The purpose of the utility model provides a kind of novel injector assembly, and both pressure regulation was convenient, structural strength is good for it, and inertia is little again.
The task of the utility model realizes through following technological scheme.A kind of novel injector assembly comprises oil injector body 5, and the sidepiece of oil injector body 5 is provided with oil sprayer filler opening 14; Connect the oil sprayer oil inlet passage 10 on oil injector body 5 sidewalls, the oil injector body tight cap 2 that has been threaded for 5 times, the omoplate faces are fastenedly connected with the needle-valve body 1 that oil injector body 5 bottom surfaces overlap in the tight cap 2; The little cylindrical of needle-valve body 1 bottom stretches out outside the tight cap 2, slidely connects needle-valve 11 in the needle-valve body 1, and the sidewall of needle-valve body 1 is provided with needle-valve body oil inlet hole 13; Be provided with the push rod 4 that fits tightly with needle-valve 11 afterbodys in oil injector body 5 inner chambers; Its structural feature is between the bottom surface of oil injector body 5 and needle-valve body 1, to be provided with transition plate 3, and transition plate 3 is provided with the center hole that supplies needle-valve 11 afterbodys to pass, and transition plate 3 is provided with oblique through hole 12; Tiltedly the upper end of through hole 12 is communicated with oil sprayer oil inlet passage 10, and its lower end is communicated with needle-valve body oil inlet hole 13.
Its structural feature is that the upper end that is connected with pressure adjusting spring 6, pressure adjusting spring 6 on the push rod 4 closely contacts with the spring seat of honour 7; The upper end at the spring seat of honour 7 closely contacts with pressure regulating screw 8 on being screwed onto oil injector body 5, and the upper end snail of pressure regulating screw 8 is connected to the helmet 9 of protection pressure regulating screw 8.
The good effect of the utility model is: 1, a kind of novel injector assembly adopts the flange plate mounting type, the pressure regulation of pressure regulating screw screw-in, and pressure regulation is convenient, structural strength is good; Adopt P series injector assembly, movement inertia is little.2, the oblique through hole of transition plate makes the oil inlet hole of oil injector body and the oil inlet hole of needle-valve body form high pressure fuel passage, the direct so identical hyperbaric chamber volume that reduced.The emission standard that 3, just can the fuel consumption rate and the discharging of motor be reached state II at the mounting type that does not change former motor.
Description of drawings
The structural front view of a kind of novel injector assembly that Fig. 1 the utility model provides.
Fig. 2 is an enlarged view of drawing circled among Fig. 1.
1-needle-valve body among the figure, the tight cap of 2-, 3-transition plate, 4-push rod, 5-oil injector body, 6-pressure adjusting spring, the 7-spring seat of honour, 8-pressure regulating screw, 9-helmet, 10-oil sprayer oil inlet passage, 11-needle-valve, the oblique through hole of 12-, 13-needle-valve body oil inlet hole, 14-oil sprayer filler opening.
Embodiment
Below in conjunction with accompanying drawing 1,2, the detail of a kind of novel injector assembly that the utility model is proposed details.A kind of novel injector assembly comprises oil injector body 5, and the sidepiece of oil injector body 5 is provided with oil sprayer filler opening 14; Connect the oil sprayer oil inlet passage 10 on oil injector body 5 sidewalls, the oil injector body tight cap 2 that has been threaded for 5 times, the omoplate faces are fastenedly connected with the needle-valve body 1 that oil injector body 5 bottom surfaces overlap in the tight cap 2; The little cylindrical of needle-valve body 1 bottom stretches out outside the tight cap 2; Slidely connect needle-valve 11 in the needle-valve body 1, the sidewall of needle-valve body 1 is provided with needle-valve body oil inlet hole 13, between the bottom surface of oil injector body 5 and needle-valve body 1, is provided with transition plate 3; Transition plate 3 is provided with the center hole that supplies needle-valve 11 afterbodys to pass; Transition plate 3 is provided with oblique through hole 12, and tiltedly the upper end of through hole 12 is communicated with oil sprayer oil inlet passage 10, and its lower end is communicated with needle-valve body oil inlet hole 13.After needle-valve 11 is opened; High pressure fuel gets into oil sprayer oil inlet passage 10 by oil sprayer filler opening 14; Form high-pressure channel through transition plate 3 and needle-valve body oil inlet hole 13, transition plate plays the passage that is connected and the high and low pressure fuel oil is provided of oil injector body and injector nozzle matching parts.The oblique through hole of transition plate makes the oil inlet hole of oil injector body and the oil inlet hole of needle-valve body form high pressure fuel passage, the direct so identical hyperbaric chamber volume that reduced.Be provided with the push rod 4 that fits tightly with needle-valve 11 afterbodys in oil injector body 5 inner chambers; The upper end of push rod 4 is connected with pressure adjusting spring 6; The upper end of pressure adjusting spring 6 closely contacts with the spring seat of honour 7; The foundation of pretightening force and the transmission of pressure are played in push rod, the spring seat of honour, and the spring seat of honour 7 offsets with the pressure regulating screw 8 that is screwed onto on the oil injector body 5, and the upper end snail of pressure regulating screw 8 is connected to the helmet 9 of protection pressure regulating screw 8.During normality, because needle-valve 11 receives the pretightening force of pressure adjusting spring 6, conical surface seal under needle-valve and the needle-valve body; When oil sprayer filler opening 14 has high pressure fuel to get into; High pressure fuel gets into the needle-valve body inner chambers through the oblique through hole of oil sprayer oil inlet passage 10, transition plate 12, needle-valve body oil inlet hole 13, when fuel pressure during greater than the pretightening force of needle-valve 11 suffered pressure adjusting springs 6, and needle-valve 11 motion that will in needle-valve body 1, make progress; Make the head ejection of high pressure fuel from needle-valve body; Along with the ejection fuel pressure of high pressure fuel descends, when needle-valve 11 suffered fuel pressures during less than the pretightening force of suffered pressure adjusting spring 6, needle-valve moves downward closes fuel oil and outwards sprays.
Claims (2)
1. a novel injector assembly comprises oil injector body (5), and the sidepiece of oil injector body (5) is provided with oil sprayer filler opening (14); Connect the oil sprayer oil inlet passage (10) on oil injector body (5) sidewall; The tight cap (2) that has been threaded under the oil injector body (5), the needle-valve body (1) that tight interior omoplate face of cap (2) and oil injector body (5) bottom surface overlap is fastenedly connected, and the little cylindrical of needle-valve body (1) bottom stretches out outside the tight cap (2); Slidely connect needle-valve (11) in the needle-valve body (1); The sidewall of needle-valve body (1) is provided with needle-valve body oil inlet hole (13), is provided with the push rod (4) that fits tightly with needle-valve (11) afterbody in oil injector body (5) inner chamber, it is characterized in that between the bottom surface of oil injector body (5) and needle-valve body (1), being provided with transition plate (3); Transition plate (3) is provided with the center hole that supplies needle-valve (11) afterbody to pass; Transition plate (3) is provided with oblique through hole (12), and tiltedly the upper end of through hole (12) is communicated with oil sprayer oil inlet passage (10), and its lower end is communicated with needle-valve body oil inlet hole (13).
2. a kind of novel injector assembly according to claim 1; It is characterized in that the upper end that is connected with pressure adjusting spring (6), pressure adjusting spring (6) on the push rod (4) closely contacts with the spring seat of honour (7); The upper end at the spring seat of honour (7) closely contacts with pressure regulating screw (8) on being screwed onto oil injector body (5), and the upper end snail of pressure regulating screw (8) is connected to the helmet (9) of protection pressure regulating screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203191816U CN202203015U (en) | 2011-08-23 | 2011-08-23 | Novel fuel injector assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203191816U CN202203015U (en) | 2011-08-23 | 2011-08-23 | Novel fuel injector assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203015U true CN202203015U (en) | 2012-04-25 |
Family
ID=45967138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203191816U Expired - Lifetime CN202203015U (en) | 2011-08-23 | 2011-08-23 | Novel fuel injector assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203015U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089530A (en) * | 2016-08-17 | 2016-11-09 | 江苏鑫田柴油机有限公司 | A kind of low inertia energy-saving type diesel engine fuel injector |
| CN109681348A (en) * | 2018-12-29 | 2019-04-26 | 重庆红江机械有限责任公司 | A kind of medium-speed engine double fuel fuel injector |
| CN113374607A (en) * | 2021-06-03 | 2021-09-10 | 上海交通大学 | Swirl oil sprayer suitable for high injection pressure |
-
2011
- 2011-08-23 CN CN2011203191816U patent/CN202203015U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089530A (en) * | 2016-08-17 | 2016-11-09 | 江苏鑫田柴油机有限公司 | A kind of low inertia energy-saving type diesel engine fuel injector |
| CN109681348A (en) * | 2018-12-29 | 2019-04-26 | 重庆红江机械有限责任公司 | A kind of medium-speed engine double fuel fuel injector |
| CN113374607A (en) * | 2021-06-03 | 2021-09-10 | 上海交通大学 | Swirl oil sprayer suitable for high injection pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |
|
| CX01 | Expiry of patent term |