CN201391399Y - Housing deformation fuel ejector used for engine - Google Patents
Housing deformation fuel ejector used for engine Download PDFInfo
- Publication number
- CN201391399Y CN201391399Y CN200920151498U CN200920151498U CN201391399Y CN 201391399 Y CN201391399 Y CN 201391399Y CN 200920151498 U CN200920151498 U CN 200920151498U CN 200920151498 U CN200920151498 U CN 200920151498U CN 201391399 Y CN201391399 Y CN 201391399Y
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- CN
- China
- Prior art keywords
- shell body
- fuel
- enclosing housing
- lower shell
- upper shell
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a housing deformation fuel ejector used for an engine, which comprises an enclosed housing and a fuel inlet mouthpiece. A valve body is arranged in the inner cavity of the enclosed housing, one end of the valve body is connected with one end of the enclosed housing, a valve hole is formed at the other end of the enclosed housing, a valve head is arranged at the other end of the valve body, the surface where the valve head is matched with the valve hole is a plane, a conical surface or a curved surface, the valve hole can be hermetically closed or opened through the valve head, at least an elastic zone is arranged on the enclosed housing, and the inner cavity of the enclosed housing is directly or indirectly communicated with the fuel inlet mouthpiece which is communicated with a timing pulse fuel source directly or through a fuel pipe. The ejector has the advantages of simple structure, small volume, low manufacturing cost and quick ejection response.
Description
Technical field
The utility model relates to engine art.
Background technique
The fuel injection technology is to improve the efficient of motor and reduce one of most important technology of engine emission.In recent years, in diesel engine and gasoline engine fuel spraying technique field, though fuel-injection pressure improves constantly, high-pressure common rail and electromagnetic valve spraying technique have obtained extensive use, and be big but present fuel injector all exists volume mostly, the manufacture cost height, shortcomings such as fuel injection low-response, especially the diesel injection device need be provided with oil return system, plunger coupled parts and valve, and complex structure has restricted the raising of engine efficiency and environmental-protecting performance.For this reason the applicant invented a kind of simple in structure, low cost of manufacture, volume is little, sprays the fast fuel injector of response, thereby effectively raises the efficient and the low emission of motor.
Summary of the invention
The purpose of this utility model will provide a kind of volume little, simple in structure exactly, sprays response soon, the new work engine fuel injector that precision is high.The utility model discloses a kind of shell body deformation fuel ejector for motor for this reason, comprising: enclosing housing and oil-feed interface its objective is such realization:
In the inner chamber of described enclosing housing, be provided with valve body, one end of described valve body is connected with an end of described enclosing housing, the other end at described enclosing housing is provided with valve opening, the other end of described valve body is provided with valve head, described valve head can be with described valve opening hermetically closing, also described valve opening can be opened, described valve head is made as the plane with the face that described valve opening matches, the conical surface or curved surface, on described enclosing housing, be provided with elastic region, a place at least, the described inner chamber of described enclosing housing directly or indirectly with described oil-feed interface UNICOM, described oil-feed interface is directly or through oil pipe and timing pulse fuel source UNICOM.
Described enclosing housing is made as by upper shell and lower shell body constitutional formula, on described upper shell and/or described lower shell body, establish a described elastic region at least, be provided with described valve opening in the lower end of described lower shell body, described upper shell and described lower shell body directly or through adjusting pad are tightly connected.
Described elastic region is located on the sidewall and/or roof of described enclosing housing, and in described upper shell and described lower shell body constitutional formula, described elastic region is located on the sidewall of described upper shell and/or the roof and/or is located on the sidewall of described lower shell body.
Described upper shell is connected through gland nut with described lower shell body.
Receive or circumsphere on described valve body, being provided with, described valve body is received in described or is connect universal connection of an end of screw and described enclosing housing through described circumsphere and ball, in described upper shell and described lower shell body constitutional formula, described valve body in described, receive or through described circumsphere and ball connect screw and described upper shell an end or with universal connection of an end of described lower shell body.
Described oil-feed interface is arranged on the sidewall or roof of described enclosing housing, in described upper shell and described lower shell body constitutional formula, described oil-feed interface is arranged on the sidewall or roof of described upper shell, or is arranged on the sidewall of described lower shell body.
Described elastic region be subjected to the anti-excessive jackscrew that expands is set on the inner-pressure expansion direction, the excessive jackscrew of described anti-expansion is connected with immovable point.
In described enclosing housing, be provided with the guide structure body, in described upper shell and described lower shell body constitutional formula, be provided with the guide structure body at described upper shell or in described lower shell body, the inboard of described guide structure body contacts with described valve body slide-and-guide, the outside of described guide structure body and described enclosing housing drive fit, described guide structure body is provided with the fuel gallery.
The upper-end inner diameter of described enclosing housing is greater than bottom diameter, and the internal diameter of described upper shell is greater than the internal diameter of described lower shell body.
Be provided with the fuel distribution district in the outside of described valve opening, described valve opening is with described inner chamber and described fuel distribution district UNICOM, and described fuel injection hole is located on the wall in described fuel distribution district, described fuel injection hole and described fuel distribution district UNICOM.
The timing pulse fuel source of indication can be the diesel oil high pressure oil pump in the utility model, high pressure co-rail system, the system that oil pump and solenoid valve are formed or other can produce the oil supply system of fuel oil pulsating pressure by the timing relation, its objective is the timing pulse fuel source that can produce required jet pressure, provide high pressure oil to motor body body deformation fuel ejector described in the utility model by the timing relation by timing events.
Traditional fuel injector is that the deformation by built-in spring causes valve body to produce displacement mostly, thereby finishes the open close of oil circuit.Based on this structure, just must have movable plunger coupled parts in the fuel injector, because the existence of plunger coupled parts, the leakage of fuel oil is just inevitable, therefore must be provided with oil return system in traditional fuel injector, it is complicated that the structure of fuel injector just becomes.The machining accuracy of plunger coupled parts and cost are higher in addition, and heat resistance is relatively poor.The key technology of shell body deformation fuel ejector for motor described in the utility model is to produce deformation by the fuel injector housing under the effect of timing pulse fuel pressure, realizes the displacement of valve body, finally finishes the injection of fuel oil.Elastic region mentioned in the utility model can be made up of multiple shape, can be that integral body processes, also can be separately after the processing by elastic material, the two ends and the housing of elastic region connected firmly the formation sealed cavity.
It is cracking pressure and the closing pressure of adjusting valve head and valve opening by the thickness of adjusting pad that the purpose of adjusting pad is set in the shell body deformation fuel ejector for motor described in the utility model.The setting of guide structure body is in order valve body to be play the guiding role, to avoid valve head contacts decentraction with valve opening phenomenon, strengthening the location accuracy of valve body.In addition, gland nut, in receive and the setting of circumsphere also has the effect of strengthening the valve body location accuracy.The anti-excessive jackscrew that expands can be adjusted in housing elastic strain scope, its effect is to prevent that the elastic shell overexpansion from causing the valve body open degree excessive, or when fuel pressure is excessive, prevent the deformation of described elastic region from surmounting its elastic limit and plastic deformation takes place, secondly can also control the emitted dose of fuel injector more accurately.
The excessive jackscrew of anti-expansion described in the utility model is connected with immovable point, and the immovable point here can be a body, cylinder cap or the housing position that is not subjected to displacement when the deformation of described elastic region.But the maximum displacement of the excessive jackscrew limiting valve body of described anti-expansion, thereby controlled the maximum injection quantity of fuel injector.
Because the external diameter of shell body deformation fuel ejector for motor disclosed in the utility model can be done very for a short time, so can arrange a plurality of in a firing chamber.
The utility model has following useful effect: volume is little, and heat resistance is good, spray response soon, and fuel injection amount is more accurate.
Description of drawings
Fig. 1 is a structural configuration schematic representation of the present utility model
Fig. 2 is that the utility model elastic region is located at the structural representation on the upper shell sidewall
Fig. 3 is that the utility model elastic region is located at the structural representation on the upper shell roof
Fig. 4 is that the utility model elastic region is located at the structural representation on the lower shell body sidewall
Fig. 5 is that an end of the utility model valve body is located at the structural representation on the lower shell body
Fig. 6 is that the utility model elastic region is located at the structural representation on upper shell and the lower shell body sidewall
Fig. 7 is that the utility model oil-feed interface is located at the structural representation on the upper shell roof
Fig. 8 is the structural representation that the utility model upper shell and lower shell body are connected through gland nut
Fig. 9 is the structural representation of receiving in the utility model valve body is provided with
Figure 10 is the structural representation that the utility model valve body is provided with circumsphere
Figure 11 is the structural representation that the utility model is provided with the anti-excessive jackscrew that expands
Accompanying drawing number
1. enclosing housing 102. upper shells 103. lower shell bodys 3. elastic regions
4. valve body 401. one ends 402. the other ends 5. valve heads
6. 7. fuel injection holes, 8. valve openings 9. in fuel distribution district are adjusted pad
10. oil pipe 101. timing pulse fuel source 14. inner chambers 15. oil-feed interfaces
19. circumspheres 16. receive in guide structure body 17. gland nuts 18.
20. ball connects screw 21. anti-excessive expansion jackscrews
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, sees also a kind of shell body deformation fuel ejector for motor shown in Figure 1, comprising: enclosing housing 1, oil-feed interface 15.In the inner chamber 14 of described enclosing housing 1, be provided with valve body 4, one end 401 of described valve body 4 is connected with an end of described enclosing housing 1, the other end at described enclosing housing 1 is provided with valve opening 8, the other end 402 of described valve body 4 is provided with valve head 5, described valve head 5 can be with described valve opening 8 hermetically closings, also described valve opening 8 can be opened, described valve head 5 is made as the plane with the face that described valve opening 8 matches, the conical surface or curved surface, on described enclosing housing 1, be provided with elastic region, a place 3 at least, the described inner chamber 14 of described enclosing housing 1 directly or indirectly with described oil-feed interface 15 UNICOMs, described oil-feed interface 15 is directly or through oil pipe 10 and timing pulse fuel source 101 UNICOMs.
See also the shell body deformation fuel ejector for motor shown in Fig. 2,3,4,5,6,7,8,9,10 and 11, described enclosing housing 1 is made as by upper shell 102 and lower shell body 103 constitutional formulas, on described upper shell 102 and/or described lower shell body 103, establish a described elastic region 3 at least, be provided with described valve opening 8 in the lower end of described lower shell body 103, described upper shell 102 and described lower shell body 103 directly or through adjusting pad 9 are tightly connected.
See also the shell body deformation fuel ejector for motor shown in Fig. 1,2,3,4,5,6,7,8,9,10 and 11, described elastic region 3 is located on the sidewall or roof of described enclosing housing 1, in described upper shell 102 and described lower shell body 103 constitutional formulas, described elastic region 3 is located on the sidewall of described upper shell 102 or the roof and/or is located on the sidewall of described lower shell body 103.
See also shell body deformation fuel ejector for motor shown in Figure 8, described upper shell 102 is connected through gland nut 17 with described lower shell body 103.
See also the shell body deformation fuel ejector for motor shown in Fig. 9 and 10, receive 18 or circumsphere 19 on described valve body 4, being provided with, described valve body 4 receives 18 or connect universal connection of an end of screw 20 and described enclosing housing 1 through described circumsphere 19 and ball in described, in described upper shell 102 and described lower shell body 103 constitutional formulas, described valve body 4 in described, receive 18 or through described circumsphere 19 and ball connect screw 20 and described upper shell 102 an end or with universal connection of an end of described lower shell body 103.
See also the shell body deformation fuel ejector for motor shown in Fig. 1,2,3,4,5,6,7,8,9,10 and 11, described oil-feed interface 15 is arranged on the sidewall or roof of described enclosing housing 1, in described upper shell 102 and described lower shell body 103 constitutional formulas, described oil-feed interface 15 is arranged on the sidewall or roof of described upper shell 102, or is arranged on the sidewall of described lower shell body 103.
See also shell body deformation fuel ejector for motor shown in Figure 11, described elastic region 3 be subjected to the anti-excessive jackscrew 21 that expands is set on the inner-pressure expansion direction, the excessive jackscrew 21 of described anti-expansion is connected with immovable point.
See also the shell body deformation fuel ejector for motor shown in Fig. 2,3,4,5,6,7,8,9,10 or 11, in described enclosing housing 1, be provided with guide structure body 16, in described upper shell 102 and described lower shell body 103 constitutional formulas, be provided with guide structure body 16 at described upper shell 102 or in described lower shell body 103, the inboard of described guide structure body 16 contacts with described valve body 4 slide-and-guides, the outside of described guide structure body 16 and described enclosing housing 1 drive fit, described guide structure body 16 is provided with the fuel gallery.
See also the shell body deformation fuel ejector for motor shown in Fig. 1,2,3,6,7,8,9,10 and 11, the upper-end inner diameter of described enclosing housing 1 is greater than bottom diameter, and the internal diameter of described upper shell 102 is greater than the internal diameter of described lower shell body 103.
See also the shell body deformation fuel ejector for motor shown in Fig. 2,3,4,5,6,7,8,9,10 or 11, be provided with fuel distribution district 6 in the outside of described valve opening 8, described valve opening 8 is with described inner chamber 14 and described fuel distribution district 6 UNICOMs, described fuel injection hole 7 is located on the wall in described fuel distribution district 6, described fuel injection hole 7 and described fuel distribution district 6 UNICOMs.
Claims (10)
1. shell body deformation fuel ejector for motor, comprise: enclosing housing (1), oil-feed interface (15), it is characterized in that: in the inner chamber (14) of described enclosing housing (1), be provided with valve body (4), one end (401) of described valve body (4) is connected with an end of described enclosing housing (1), the other end at described enclosing housing (1) is provided with valve opening (8), the other end (402) of described valve body (4) is provided with valve head (5), described valve head (5) can be with described valve opening (8) hermetically closing, also described valve opening (8) can be opened, described valve head (5) is made as the plane with the face that described valve opening (8) matches, the conical surface or curved surface, on described enclosing housing (1), be provided with elastic region, a place (3) at least, the described inner chamber (14) of described enclosing housing (1) directly or indirectly with described oil-feed interface (15) UNICOM, described oil-feed interface (15) is directly or through oil pipe (10) and timing pulse fuel source (101) UNICOM.
2. shell body deformation fuel ejector for motor according to claim 1, it is characterized in that: described enclosing housing (1) is made as by upper shell (102) and lower shell body (103) constitutional formula, on described upper shell (102) and/or described lower shell body (103), establish a described elastic region (3) at least, be provided with described valve opening (8) in the lower end of described lower shell body (103), described upper shell (102) and described lower shell body (103) directly or through adjusting pad (9) are tightly connected.
3. shell body deformation fuel ejector for motor as claimed in claim 1 or 2, it is characterized in that: described elastic region (3) are located on the sidewall and/or roof of described enclosing housing (1), in described upper shell (102) and described lower shell body (103) constitutional formula, described elastic region (3) are located on the sidewall of described upper shell (102) and/or the roof and/or are located on the sidewall of described lower shell body (103).
4. as shell body deformation fuel ejector for motor as described in the claim 2, it is characterized in that: described upper shell (102) is connected through gland nut (17) with described lower shell body (103).
5. shell body deformation fuel ejector for motor as claimed in claim 1 or 2, it is characterized in that: receive (18) or circumsphere (19) on described valve body (4), being provided with, described valve body (4) is received in described (18) or is connect universal connection of an end of screw (20) and described enclosing housing (1) through described circumsphere (19) and ball, in described upper shell (102) and described lower shell body (103) constitutional formula, described valve body (4) in described, receive (18) or through described circumsphere (19) and ball connect screw (20) and described upper shell (102) an end or with universal connection of an end of described lower shell body (103).
6. shell body deformation fuel ejector for motor as claimed in claim 1 or 2, it is characterized in that: described oil-feed interface (15) is arranged on the sidewall or roof of described enclosing housing (1), in described upper shell (102) and described lower shell body (103) constitutional formula, described oil-feed interface (15) is arranged on the sidewall or roof of described upper shell (102), or is arranged on the sidewall of described lower shell body (103).
7. shell body deformation fuel ejector for motor as claimed in claim 1 or 2 is characterized in that: described elastic region (3) be subjected to the anti-excessive jackscrew (21) that expands is set on the inner-pressure expansion direction, the excessive jackscrew of described anti-expansion (21) is connected with immovable point.
8. shell body deformation fuel ejector for motor as claimed in claim 1 or 2, it is characterized in that: in described enclosing housing (1), be provided with guide structure body (16), in described upper shell (102) and described lower shell body (103) constitutional formula, be provided with guide structure body (16) at described upper shell (102) or in described lower shell body (103), the inboard of described guide structure body (16) contacts with described valve body (4) slide-and-guide, the outside of described guide structure body (16) and described enclosing housing (1) drive fit, described guide structure body (16) is provided with the fuel gallery.
9. shell body deformation fuel ejector for motor as claimed in claim 1 or 2, it is characterized in that: the upper-end inner diameter of described enclosing housing (1) is greater than bottom diameter, in described upper shell (102) and described lower shell body (103) constitutional formula, the internal diameter of described upper shell (102) is greater than the internal diameter of described lower shell body (103).
10. shell body deformation fuel ejector for motor according to claim 1, it is characterized in that: be provided with fuel distribution district (6) in the outside of described valve opening (8), described valve opening (8) is with described inner chamber (14) and described fuel distribution district (6) UNICOM, described fuel injection hole (7) is located on the wall in described fuel distribution district (6), described fuel injection hole (7) and described fuel distribution district (6) UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920151498U CN201391399Y (en) | 2009-04-24 | 2009-04-24 | Housing deformation fuel ejector used for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920151498U CN201391399Y (en) | 2009-04-24 | 2009-04-24 | Housing deformation fuel ejector used for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391399Y true CN201391399Y (en) | 2010-01-27 |
Family
ID=41598225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920151498U Expired - Lifetime CN201391399Y (en) | 2009-04-24 | 2009-04-24 | Housing deformation fuel ejector used for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391399Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592107B (en) * | 2009-04-24 | 2011-06-15 | 靳北彪 | Shell deformation fuel injector for engine |
-
2009
- 2009-04-24 CN CN200920151498U patent/CN201391399Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592107B (en) * | 2009-04-24 | 2011-06-15 | 靳北彪 | Shell deformation fuel injector for engine |
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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 |
Granted publication date: 20100127 Effective date of abandoning: 20090424 |