CN101592112A - Valve sheet deformation fuel injector for engine - Google Patents
Valve sheet deformation fuel injector for engine Download PDFInfo
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- CN101592112A CN101592112A CNA2009101360323A CN200910136032A CN101592112A CN 101592112 A CN101592112 A CN 101592112A CN A2009101360323 A CNA2009101360323 A CN A2009101360323A CN 200910136032 A CN200910136032 A CN 200910136032A CN 101592112 A CN101592112 A CN 101592112A
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- valve plate
- elastic valve
- support platform
- fuel injector
- sealing surface
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Abstract
The invention discloses a kind of valve sheet deformation fuel injector for engine, comprising: enclosing housing and oil-feed interface.On the inwall of described enclosing housing, be provided with support platform, be provided with elastic valve plate at described supporting platform, described elastic valve plate is supported by described support platform, on described support platform, be provided with the support platform sealing surface, on described elastic valve plate, establish the valve block sealing surface, described support platform sealing surface matches with described valve block sealing surface, on described support platform and/or described elastic valve plate, establish passage, match at described elastic valve plate and described support platform and to form seal area and UNICOM district, described elastic valve plate is separated into epicoele and cavity of resorption with the inner chamber of described enclosing housing, described cavity of resorption is the fuel distribution district, described epicoele is through described oil-feed interface and oil pipe and timing pulse fuel source UNICOM, and the wall in described fuel distribution district is provided with fuel injection hole.Valve sheet deformation fuel injector for engine of the present invention is simple in structure, and low cost of manufacture is sprayed response soon.
Description
Technical field
The present invention 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
It is a kind of simple in structure that purpose of the present invention will provide exactly, low cost of manufacture, and volume is little, sprays the fast new work engine fuel injector of response.The invention discloses a kind of valve sheet deformation fuel injector for this reason, comprising: enclosing housing and oil-feed interface, the specific implementation form is as follows:
On the inwall of described enclosing housing, be provided with support platform, be provided with elastic valve plate at described supporting platform, described elastic valve plate is supported by described support platform, on described support platform, be provided with the support platform sealing surface, on described elastic valve plate, establish the valve block sealing surface, described support platform sealing surface matches with described valve block sealing surface, on described support platform and/or described elastic valve plate, establish passage, match at described elastic valve plate and described support platform and to form seal area and UNICOM district, described support platform sealing surface and described valve block sealing surface are made as the plane simultaneously, the conical surface or curved surface, described elastic valve plate is separated into epicoele and cavity of resorption with the inner chamber of described enclosing housing, described cavity of resorption is the fuel distribution district, and described epicoele is through described oil-feed interface and oil pipe and timing pulse fuel source UNICOM, and the wall in described fuel distribution district is provided with fuel injection hole.
Described enclosing housing is made as upper shell and lower shell body, and described upper shell and described lower shell body directly or through adjusting pad are tightly connected.
In the described epicoele of described enclosing housing, be provided with elastic valve plate precompressed positioning rod.
In the described epicoele of described enclosing housing, be provided with the elastic valve plate retaining spring.
Described passage is located at the close axis place of described elastic valve plate.
Described passage is located at the close axis place of described support platform.
Described passage be located at described support platform away from the axis place, described elastic valve plate is made as scratches the shaft type elastic valve plate, scratches on the shaft type elastic valve plate on described and is provided with positioning shaft, the positioning hole of described positioning shaft and the described enclosing housing location of sliding.
Described elastic valve plate is made as flat elastic valve plate, on scratch formula elastic valve plate or downwarp formula elastic valve plate.
The timing pulse fuel source of indication can be the diesel oil high pressure oil pump among the present invention, high pressure co-rail system, it also can be the system that oil pump and solenoid valve are formed, and other can its objective is and can produce the timing pulse fuel source of spraying required pressure by timing events by the oil supply system of timing relation generation fuel oil pulsating pressure.
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 sparger, 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 valve sheet deformation fuel injector for engine of the present invention is to produce deformation by elastic valve plate in the fuel injector under the effect of timing pulse fuel pressure, make supporting station sealing surface and valve block sealing surface form the gap, epicoele and cavity of resorption UNICOM realize the injection of fuel oil.
Elastic valve plate precompressed positioning rod, retaining spring and the adjustment pad that the present invention is provided with all works to adjust precompressed to elastic valve plate, to adjust injection pressure and fuel injection quantity.Simultaneously, elastic valve plate precompressed positioning rod, retaining spring all play location and leading role to elastic valve plate again.
The present invention has following actively useful effect:
1, the fuel injector volume is little, and is simple in structure;
2, heat resistance is good;
3, the injection speed of response is fast;
4, fuel injection amount is more accurate.
Description of drawings
Fig. 1 is a structural configuration schematic representation of the present invention;
Fig. 2 is the flat elastic valve plate worm's eye view of the present invention;
Fig. 3 is the A-A sectional view of Fig. 2 of the present invention;
Fig. 4 is the closed condition schematic representation of the flat elastic valve plate of the present invention;
Fig. 5 is the spray regime schematic representation of the flat elastic valve plate of the present invention;
Fig. 6 is made as the structural representation of the conical surface for valve block sealing surface of the present invention;
Fig. 7 is made as the structural representation of curved surface for valve block sealing surface of the present invention;
Fig. 8 is provided with the structural representation of elastic valve plate precompressed positioning rod for the present invention;
Fig. 9 is provided with the structural representation of elastic valve plate retaining spring for the present invention;
Figure 10 is provided with the structural representation of Shangrao formula elastic valve plate for the present invention;
Figure 11 is the worm's eye view of Shangrao of the present invention formula elastic valve plate;
Figure 12 is the B-B sectional view of Figure 11 of the present invention;
Figure 13 is provided with Shangrao formula elastic valve plate closed condition schematic representation of elastic valve plate precompressed positioning rod for the present invention;
Figure 14 is provided with Shangrao formula elastic valve plate spray regime schematic representation of elastic valve plate precompressed positioning rod for the present invention;
Figure 15 is provided with Shangrao formula elastic valve plate structural drawing of elastic valve plate retaining spring for the present invention;
Figure 16 is provided with Shangrao formula elastic valve plate closed condition schematic representation of elastic valve plate retaining spring for the present invention;
Figure 17 is provided with Shangrao formula elastic valve plate spray regime schematic representation of elastic valve plate retaining spring for the present invention;
Figure 18 is provided with the structural representation of Shangrao shaft type elastic valve plate for the present invention;
Figure 19 is Shangrao of the present invention shaft type elastic valve plate closed condition schematic representation;
Figure 20 is Shangrao of the present invention shaft type elastic valve plate spray regime schematic representation;
Figure 21 is provided with down structural representation around the formula elastic valve plate for the present invention;
Figure 22 under the present invention around the worm's eye view of formula elastic valve plate;
Figure 23 is the C-C sectional view of Figure 22 of the present invention;
Figure 24 under the present invention around the closed condition schematic representation of formula elastic valve plate;
Figure 25 under the present invention around the spray regime schematic representation of formula elastic valve plate;
Accompanying drawing number
1. enclosing housing 2. oil-feed interfaces 3. support platforms 4. elastic valve plates
5. fuel distribution district 6. oil pipes 7. timing pulse fuel source 8. fuel injection holes
9. elastic valve plate precompressed positioning rod 10. elastic valve plate retaining springs 11. upper shells
12. lower shell body 13. is adjusted pad 14. positioning shafts 30. support platform sealing surfaces
40. valve block sealing surface 304. passages 31. seal areas 32. UNICOM districts
101. scratch the shaft type elastic valve plate on epicoele 102. cavity of resorptions 41.
42. scratch formula elastic valve plate 44. downwarp formula elastic valve plates on the flat elastic valve plate 43.
Embodiment
The invention will be further described below in conjunction with accompanying drawing, see also valve sheet deformation fuel injector for engine shown in Figure 1, comprise enclosing housing 1, oil-feed interface 2, on the inwall of described enclosing housing 1, be provided with support platform 3,3 places are provided with elastic valve plate 4 at described support platform, described elastic valve plate 4 is supported by described support platform 3, on described support platform 3, be provided with support platform sealing surface 30, on described elastic valve plate 4, establish valve block sealing surface 40, described support platform sealing surface 30 matches with described valve block sealing surface 40, on described support platform and/or described elastic valve plate 4, establish passage 304, match at described elastic valve plate 4 and described support platform 3 and to form seal area 31 and UNICOM district 32, described support platform sealing surface 30 and described valve block sealing surface 40 are made as the plane simultaneously, the conical surface or curved surface, described elastic valve plate 4 is separated into epicoele 101 and cavity of resorption 102 with the inner chamber of described enclosing housing 1, described cavity of resorption 102 is fuel distribution district 5, described epicoele 101 is through described oil-feed interface 2 and oil pipe 6 and timing pulse fuel source 7 UNICOMs, and the wall in described fuel distribution district 5 is provided with fuel injection hole 8.
See also the valve sheet deformation fuel injector for engine shown in Fig. 4,5,6,7,8,11,13 and 15, described enclosing housing 1 is made as upper shell 11 and lower shell body 12, and described upper shell 11 directly or through adjusting pad 13 is tightly connected with described lower shell body 12.
See also the valve sheet deformation fuel injector for engine shown in Fig. 6 and 8, in the described epicoele 101 of described enclosing housing 1, be provided with elastic valve plate precompressed positioning rod 9.
See also the valve sheet deformation fuel injector for engine shown in Fig. 7,11,13 and 15, in described enclosing housing 1 described epicoele 101, be provided with elastic valve plate retaining spring 10.
See also the valve sheet deformation fuel injector for engine shown in Fig. 6,7,8 and 11, described passage 304 is located at the close axis place of described elastic valve plate 4.
See also the valve sheet deformation fuel injector for engine shown in Fig. 6,7,8 and 11, described passage 304 is located at the close axis place of described support platform 3.
See also the valve sheet deformation fuel injector for engine shown in Figure 13 and 14, described passage 304 be located at described support platform 3 away from the axis place, described elastic valve plate 4 is made as scratches shaft type elastic valve plate 41, scratch on described and be provided with positioning shaft 14 on the shaft type elastic valve plate 41, the positioning hole of described positioning shaft 14 and described enclosing housing 1 location of sliding.
See also the valve sheet deformation fuel injector for engine shown in Fig. 2,11 and 15, described elastic valve plate 4 is made as flat elastic valve plate 42, on scratch formula elastic valve plate 43 or downwarp formula elastic valve plate 44.
Claims (8)
1. valve sheet deformation fuel injector for engine, comprise: enclosing housing (1), oil-feed interface (2), it is characterized in that: on the inwall of described enclosing housing (1), be provided with support platform (3), locate to be provided with elastic valve plate (4) at described support platform (3), described elastic valve plate (4) is supported by described support platform (3), on described support platform (3), be provided with support platform sealing surface (30), on described elastic valve plate (4), establish valve block sealing surface (40), described support platform sealing surface (30) matches with described valve block sealing surface (40), on described support platform and/or described elastic valve plate (4), establish passage (304), match at described elastic valve plate (4) and described support platform (3) and to form seal area (31) and UNICOM district (32), described support platform sealing surface (30) and described valve block sealing surface (40) are made as the plane simultaneously, the conical surface or curved surface, described elastic valve plate (4) is separated into epicoele (101) and cavity of resorption (102) with the inner chamber of described enclosing housing (1), described cavity of resorption (102) is fuel distribution district (5), described epicoele (101) is through described oil-feed interface (2) and oil pipe (6) and timing pulse fuel source (7) UNICOM, and the wall in described fuel distribution district (5) is provided with fuel injection hole (8).
2. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: described enclosing housing (1) is made as upper shell (11) and lower shell body (12), and described upper shell (11) directly or through adjusting pad (13) is tightly connected with described lower shell body (12).
3. valve sheet deformation fuel injector for engine as claimed in claim 1 or 2 is characterized in that: be provided with elastic valve plate precompressed positioning rod (9) in the described epicoele (101) of described enclosing housing (1).
4. valve sheet deformation fuel injector for engine as claimed in claim 1 or 2 is characterized in that: be provided with elastic valve plate retaining spring (10) in the described epicoele (101) of described enclosing housing (1).
5. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: described passage (304) is located at the close axis place of described elastic valve plate (4).
6. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: described passage (304) is located at the close axis place of described support platform (3).
7. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: described passage (304) be located at described support platform (3) away from the axis place, described elastic valve plate (4) is made as scratches shaft type elastic valve plate (41), scratch on described and be provided with positioning shaft (14) on the shaft type elastic valve plate (41), the positioning hole of described positioning shaft (14) and described enclosing housing (1) location of sliding.
8. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: described elastic valve plate (4) is made as flat elastic valve plate (42), on scratch formula elastic valve plate (43) or downwarp formula elastic valve plate (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101360323A CN101592112B (en) | 2009-04-24 | 2009-04-24 | Valve sheet deformation fuel injector for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101360323A CN101592112B (en) | 2009-04-24 | 2009-04-24 | Valve sheet deformation fuel injector for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101592112A true CN101592112A (en) | 2009-12-02 |
| CN101592112B CN101592112B (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101360323A Expired - Fee Related CN101592112B (en) | 2009-04-24 | 2009-04-24 | Valve sheet deformation fuel injector for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101592112B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805891A (en) * | 1954-04-05 | 1957-09-10 | Mcculloch Motors Corp | Fluid spray nozzle |
| DE4445585A1 (en) * | 1994-12-20 | 1996-06-27 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
-
2009
- 2009-04-24 CN CN2009101360323A patent/CN101592112B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101592112B (en) | 2012-06-27 |
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