CN105909443A - Pintle type oil injector of mechanical diesel engine - Google Patents
Pintle type oil injector of mechanical diesel engine Download PDFInfo
- Publication number
- CN105909443A CN105909443A CN201610285107.4A CN201610285107A CN105909443A CN 105909443 A CN105909443 A CN 105909443A CN 201610285107 A CN201610285107 A CN 201610285107A CN 105909443 A CN105909443 A CN 105909443A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- pressure regulating
- needle
- regulating screw
- 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
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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
- F02M61/04—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
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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
- F02M61/166—Selection of particular materials
-
- 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
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 pintle type oil injector of a mechanical diesel engine. The pintle type oil injector comprises an oil returning tube joint bolt, a pressure regulating screw cap, a pressure regulating screw, gaskets, an oil core, an oil feeding tube joint, a fastening screw sleeve, a needle valve, a flange gasket, a needle valve body, an oil injector body, an ejector rod, an oil injector valve, a pressure regulating spring, fastening nuts and a chamber body. The pintle type oil injector is characterized in that the oil returning tube joint bolt is connected to the top end of the chamber body; the pressure regulating screw is arranged in the chamber body; the pressure regulating screw cap is mounted on the top part of the pressure regulating screw, and the gaskets are arranged at the two sides of the pressure regulating screw; the oil feeding tube joint is fixedly welded to the right side of the chamber body; the oil core of which the left end is equipped with the oil injector valve is mounted in the oil feeding tube joint. The pintle type oil injector is simple in structure; a bearing surface is mounted at the lower end of the needle valve, so that the bearing capacity of the needle valve can be improved; a fuel vaporizing chamber is arranged between the oil core and the oil injector valve body, so that the combustion rate of fuel can be greatly improved.
Description
Technical field
The present invention relates to plant equipment applied technical field, the axial needle type injector of a kind of machinery diesel engine.
Background technology
Owing to environmental pollution is the most serious; energy crisis grows in intensity; thus using low stain energy-saving engine to be always the target of national governments and professional person, people propose the highest requirement to the fuel consumption and emission of gasoline engine while pursuing vehicle gasoline engine good dynamics.Electron controls technology and the fast development of measuring technology, the high performance gasoline engine of exploitation is made to be possibly realized, the advantage that direct spray petrol engine in cylinder electromotor combines compression ignition engine and spark-ignition engine, the lean burn in cylinder is achieved by modes such as the air motions in the inner cylinder direct injection of fuel oil, variable injection timing and master cylinder, make electromotor all show bigger potentiality at fuel economy or reducing the aspect such as discharge, become one highly important developing direction of vehicle gasoline engine.
The fuel injector of direct spray petrol engine in cylinder is mounted in engine cylinder cover combustion chamber wall surface, directly contacts with high-temperature fuel gas, causes fuel injector operating temperature higher；Simultaneously because electromotor works in a looping fashion, injection is interrupted, and the gasoline in fuel injector fuel gallery flows the most off and on.And usual presoma containing deposits such as colloids in gasoline, when fuel injector cuts out, internal temperature is too high, and the gasoline that fuel injector head does not flow, under high temperature action, easily carries out deep oxidation and forms high polymer, being deposited on the surface of fuel gallery and part, coking also forms carbon distribution.Thickening of carbon can change fuel injector spray configuration, distributive value, and finally affects the combustion efficiency of fuel oil, makes automotive performance decline.Test shows, the coking carbon distribution of fuel injector is the most relevant with the interval time between the ambient temperature meter oil spout of fuel injector, and the aperture time between temperature height, oil spout is long, then coking rate increases
；Otherwise then coking rate reduces.
Summary of the invention
This practical purpose is to overcome shortcoming present in prior art, it is provided that the axial needle type injector of a kind of machinery diesel engine, it is to avoid existing needle-valve difficulty of processing is big, and needle-valve is poor, with the problem solving to propose in above-mentioned background technology with needle-valve body envelope property.
For achieving the above object, the present invention provides following technical scheme: the axial needle type injector of a kind of machinery diesel engine, including oil returning pipe joint bolt, pressure regulating screw helmet, pressure regulating screw, packing ring, wick, inlet connector, fastening swivel nut, needle-valve, flange gasket, needle-valve body, oil injector body, push rod, fuel injector valve, pressure spring, clamp nut and cavity；The top of described cavity connects oil returning pipe joint bolt, cavity be internally provided with pressure regulating screw；The top of described pressure regulating screw is provided with pressure regulating screw helmet；The both sides of described pressure regulating screw are provided with packing ring；The right side of described cavity is fixedly welded with inlet connector, and internally installed at inlet connector has wick, and the left end of wick is provided with fuel injector valve；Described fuel injector valve is connected with needle-valve；The both sides of described oil injector body are provided with fastening swivel nut；Described needle-valve is arranged on the inside of needle-valve body, and the lower end of needle-valve body is provided with flange gasket, and its needle-valve body and flange gasket are fastenedly connected；Being provided with push rod on described oil injector body, the top of its oil injector body is provided with clamp nut；Described push rod and the fixing connection of pressure regulating screw, pressure spring is arranged on the upper end of push rod.
Preferably, described pressure spring is high resiliency spring, and the lower end of pressure spring utilizes nut to be fixed on push rod, and push rod is cylindrical structure, and its material is T-shaped entity steel pipe；The circular jetting oilhole of 6 a diameter of 0.5mm it is provided with in the junction of push rod and needle-valve.
Preferably, between described wick and fuel injector valve body, it is provided with fuel vaporization room, fuel vaporization room is provided with the nebulization channel being connected with cylinder, in the outside of wick, wick defecator is installed.
Preferably, described oil injector body uses stainless steel material to make, and is coated with nanometer Mg metal, oil injector body and cavity on the surface of oil injector body and utilizes ridge to be fastenedly connected, and the packing ring on its cavity is annular rubber packing ring.
Preferably, the lower end of described needle-valve is provided with pressure-bearing surface, and its pressure-bearing surface and sealing member are fastenedly connected, and sealing member is a kind of rustless steel sealing ring, is provided with the screw thread age of a draught animal on sealing member.
Compared with prior art, the invention has the beneficial effects as follows: this axial needle type injector, simple in construction, owing to the lower end of needle-valve is provided with pressure-bearing surface, therefore increase the bearing capacity of needle-valve；Between wick and fuel injector valve body, it is provided with fuel vaporization room, is greatly improved the combustion rate of fuel oil, fuel vaporization room is provided with the nebulization channel being connected with cylinder, other impurity in fuel oil can be discharged timely.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention；
In figure: 1 oil returning pipe joint bolt, 2 pressure regulating screw helmets, 3 pressure regulating screws, 4 packing rings, 5 wicks, 6 inlet connectors, 7 fastening swivel nut, 8 needle-valves, 9 flange gaskets, 10 needle-valve bodies, 11 oil injector bodies, 12 push rods, 13 fuel injector valves, 14 pressure springs, 15 clamp nuts, 16 cavitys.
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, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment
Refer to Fig. 1, the present invention provides a kind of technical scheme: the axial needle type injector of a kind of machinery diesel engine, including oil returning pipe joint bolt 1, pressure regulating screw helmet 2, pressure regulating screw 3, packing ring 4, wick 5, inlet connector 6, fastening swivel nut 7, needle-valve 8, flange gasket 9, needle-valve body 10, oil injector body 11, push rod 12, fuel injector valve 13, pressure spring 14, clamp nut 15 and cavity 16；The top of described cavity 16 connects oil returning pipe joint bolt 1, cavity 16 be internally provided with pressure regulating screw 13；The top of described pressure regulating screw 13 is provided with pressure regulating screw helmet 2；The both sides of described pressure regulating screw 3 are provided with packing ring 4；The right side of described cavity 16 is fixedly welded with inlet connector 6, and internally installed at inlet connector 6 has wick 5, and the left end of wick 5 is provided with fuel injector valve 13；Described fuel injector valve 13 is connected with needle-valve 8；The both sides of described oil injector body 11 are provided with fastening swivel nut 15；Described needle-valve 8 is arranged on the inside of needle-valve body 10, and the lower end of needle-valve body 10 is provided with flange gasket 9, and its needle-valve body 10 and flange gasket 9 are fastenedly connected；Being provided with push rod 12 on described oil injector body 11, the top of its oil injector body 11 is provided with clamp nut 15；Described push rod 12 and the fixing connection of pressure regulating screw 3, pressure spring 14 is arranged on the upper end of push rod 12.
Described pressure spring 14 is high resiliency spring, and the lower end of pressure spring 14 utilizes nut to be fixed on nut and is fixed on push rod 12, and push rod 12 is cylindrical structure, and its material is T-shaped entity steel pipe；It is provided with the circular jetting oilhole of 6 a diameter of 0.5mm in the junction of push rod 12 and needle-valve 8, increases injection velocity；It is provided with fuel vaporization room between described wick 5 and fuel injector valve 13, it is greatly improved the combustion rate of fuel oil, the nebulization channel being connected with cylinder it is provided with on fuel vaporization room, other impurity in fuel oil can be discharged timely, in the outside of wick 5, wick defecator is installed, the booty on wick can be removed in time；Described oil injector body 11 uses stainless steel material to make, and is coated with nanometer Mg metal, oil injector body 11 and cavity 16 on the surface of oil injector body 11 and utilizes ridge to be fastenedly connected, and the packing ring on its cavity 16 is annular rubber packing ring；The lower end of described needle-valve 8 is provided with pressure-bearing surface, and its pressure-bearing surface and sealing member are fastenedly connected, and therefore increases the bearing capacity of needle-valve 8, and sealing member is a kind of rustless steel sealing ring, is provided with the screw thread age of a draught animal on sealing member.
The present invention waits in use, when diesel engine works, fuel oil enters in needle-valve body 8 through inlet connector 6 and fuel injector valve 13, when temperature raises, can produce gas owing to fuel oil is heated, gas can enter in cavity 16, now the pressure regulating screw 3 at cavity 16 top can produce pressure to pressure spring 14, and then extruding push rod 12, make oil injector body 11 oil spout, thus realize the function of oil spout.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (4)
1. the axial needle type injector of a mechanical diesel engine, including oil returning pipe joint bolt (1), pressure regulating screw helmet (2), pressure regulating screw (3), packing ring (4), wick (5), inlet connector (6), fastening swivel nut (7), needle-valve (8), flange gasket (9), needle-valve body (10), oil injector body (11), push rod (12), fuel injector valve (13), pressure spring (14), clamp nut (15) and cavity (16), it is characterized in that: the top of described cavity (16) connects oil returning pipe joint bolt (1), cavity (16) be internally provided with pressure regulating screw (3)；The top of described pressure regulating screw (3) is provided with pressure regulating screw helmet (2)；The both sides of described pressure regulating screw (3) are provided with packing ring (4)；The right side of described cavity (16) is fixedly welded with inlet connector (6), and internally installed at inlet connector (6) has wick (5), and the left end of wick is provided with fuel injector valve (13)；Described fuel injector valve (13) is connected with needle-valve (8)；The both sides of described oil injector body (11) are provided with fastening swivel nut (7)；Described needle-valve (8) is arranged on the inside of needle-valve body (10), is provided with flange gasket (9), its needle-valve body (10) and flange gasket (9) in the lower end of needle-valve body (10) and is fastenedly connected；Being provided with push rod (12) on described oil injector body (11), the top of its oil injector body (11) is provided with clamp nut (15)；Described push rod (12) and the fixing connection of pressure regulating screw (3), pressure spring (14) is arranged on the upper end of push rod (12).
The axial needle type injector of a kind of machinery diesel engine the most according to claim 1, it is characterized in that: described pressure spring (14) is high resiliency spring, the lower end of pressure spring (14) utilizes nut to be fixed on push rod (12), push rod (12) is cylindrical structure, and its material is T-shaped entity steel pipe；The circular jetting oilhole of 6 a diameter of 0.5mm it is provided with in the junction of push rod (12) and needle-valve (8).
The axial needle type injector of a kind of machinery diesel engine the most according to claim 1, it is characterized in that: between described wick (5) and fuel injector valve (13), be provided with fuel vaporization room, it is provided with the nebulization channel being connected with cylinder on fuel vaporization room, in the outside of wick (5), wick defecator is installed.
The axial needle type injector of a kind of machinery diesel engine the most according to claim 1, it is characterized in that: described oil injector body (11) uses stainless steel material to make, it is coated with nanometer Mg metal on the surface of oil injector body (11), oil injector body (11) and cavity (16) utilize ridge to be fastenedly connected, and the packing ring (4) on its cavity (16) is annular rubber packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285107.4A CN105909443A (en) | 2016-05-03 | 2016-05-03 | Pintle type oil injector of mechanical diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285107.4A CN105909443A (en) | 2016-05-03 | 2016-05-03 | Pintle type oil injector of mechanical diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909443A true CN105909443A (en) | 2016-08-31 |
Family
ID=56752318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610285107.4A Pending CN105909443A (en) | 2016-05-03 | 2016-05-03 | Pintle type oil injector of mechanical diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909443A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916390A (en) * | 2006-09-10 | 2007-02-21 | 郑国璋 | Fuel injector of diesel engine of using various fuels |
| CN102297064A (en) * | 2011-07-29 | 2011-12-28 | 山东鑫亚工业股份有限公司 | Fuel injector with fuel oil filter |
| CN105201716A (en) * | 2015-11-03 | 2015-12-30 | 南岳电控(衡阳)工业技术有限公司 | Novel common-rail fuel injector |
| CN105264213A (en) * | 2013-05-21 | 2016-01-20 | 西港电力公司 | Fuel injector |
| CN205047343U (en) * | 2015-10-19 | 2016-02-24 | 天津哈那科技有限公司 | Oil injector |
-
2016
- 2016-05-03 CN CN201610285107.4A patent/CN105909443A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916390A (en) * | 2006-09-10 | 2007-02-21 | 郑国璋 | Fuel injector of diesel engine of using various fuels |
| CN102297064A (en) * | 2011-07-29 | 2011-12-28 | 山东鑫亚工业股份有限公司 | Fuel injector with fuel oil filter |
| CN105264213A (en) * | 2013-05-21 | 2016-01-20 | 西港电力公司 | Fuel injector |
| CN205047343U (en) * | 2015-10-19 | 2016-02-24 | 天津哈那科技有限公司 | Oil injector |
| CN105201716A (en) * | 2015-11-03 | 2015-12-30 | 南岳电控(衡阳)工业技术有限公司 | Novel common-rail fuel injector |
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Application publication date: 20160831 |
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| WD01 | Invention patent application deemed withdrawn after publication |