CN101592112B - Valve sheet deformation fuel injector for engine - Google Patents
Valve sheet deformation fuel injector for engine Download PDFInfo
- Publication number
- CN101592112B CN101592112B CN2009101360323A CN200910136032A CN101592112B CN 101592112 B CN101592112 B CN 101592112B CN 2009101360323 A CN2009101360323 A CN 2009101360323A CN 200910136032 A CN200910136032 A CN 200910136032A CN 101592112 B CN101592112 B CN 101592112B
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- Prior art keywords
- valve plate
- elastic valve
- support platform
- fuel injector
- valve sheet
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Abstract
The invention discloses a valve sheet deformation fuel injector for an engine, which comprises a closed shell and a fuel inlet interface. The inner wall of the closed shell is provided with a supporting table; the supporting table is provided with an elastic valve sheet; the elastic valve sheet is supported by the supporting table; the supporting table is provided with a supporting table sealing surface; the elastic valve sheet is provided with a valve sheet sealing surface; the supporting table sealing surface is matched with the valve sheet sealing surface; the supporting table and/or the elastic valve sheet are/is provided with a channel; the elastic valve sheet and the supporting table are matched to form a sealing region and a communicating region; the closed shell is divided into an upper cavity and a lower cavity by the elastic valve sheet; the lower cavity is a fuel distribution region; the upper cavity is communicated with a timing pulse fuel source through the fuel inlet interface and a vitta; and the wall of the fuel distribution region is provided with a fuel injection hole. The valve deformation fuel injector for the engine has simple structure, low manufacturing cost and rapid injection response.
Description
Technical field
The present invention relates to engine art.
Background technique
The fuel injection technology is to improve the efficient and one of most important technology that reduces engine emission of motor.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, and manufacture cost is high; 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 property of motor.
Summary of the invention
It is a kind of simple in structure that the object of the invention will provide exactly, low cost of manufacture, and volume is little, sprays the fast new work engine of response and uses fuel injector.The invention discloses a kind of valve sheet deformation fuel injector for this reason, comprising: enclosing housing and oil-feed interface, concrete way of realization is following:
On the inwall of said enclosing housing, be provided with support platform, be provided with elastic valve plate at said supporting platform, said elastic valve plate is supported by said support platform; On said support platform, be provided with the support platform sealing surface, on said elastic valve plate, establish the valve block sealing surface, said support platform sealing surface matches with said valve block sealing surface; On said support platform and/or said elastic valve plate, establish passage; Matching at said elastic valve plate and said support platform forms seal area and UNICOM district, and said support platform sealing surface and said valve block sealing surface are made as the plane, the conical surface or curved surface simultaneously; Said elastic valve plate is separated into epicoele and cavity of resorption with the inner chamber of said enclosing housing; Said cavity of resorption is the fuel distribution district, and said epicoele is through said oil-feed interface and oil pipe and pulse in correct time fuel source UNICOM, and the wall in said fuel distribution district is provided with fuel injection hole.
Said enclosing housing is made as upper shell and lower shell body, and said upper shell and said lower shell body directly or through the adjustment pad are tightly connected.
In the said epicoele of said enclosing housing, be provided with elastic valve plate precompressed positioning rod.
In the said epicoele of said enclosing housing, be provided with the elastic valve plate retaining spring.
Said passage be located at said elastic valve plate near the axis place.
Said passage be located at said support platform near the axis place.
Said passage be located at said support platform away from the axis place, said elastic valve plate is made as scratches the shaft type elastic valve plate, scratches on the shaft type elastic valve plate on said and is provided with positioning shaft, the positioning hole of said positioning shaft and the said enclosing housing location of sliding.
Said elastic valve plate is made as flat elastic valve plate, on scratch formula elastic valve plate or downwarp formula elastic valve plate.
Pulse in the correct time 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 pulse in the correct time fuel source of spraying required pressure by timing events by the oil supply system of relation generation in correct time fuel oil pulsating pressure.
Traditional fuel injector is that the deformation through built-in spring causes valve body to produce displacement mostly, thereby accomplishes 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 in traditional fuel injector, must be provided with oil return system, 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 according to the invention is under the effect of pulse in correct time fuel pressure, to produce deformation through elastic valve plate in the fuel injector; 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 plays the adjustment precompressed to elastic valve plate, with adjustment 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 the 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 pipe pulse in 7. correct time 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. adjustment pads 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
Below in conjunction with accompanying drawing the present invention is described further, sees also valve sheet deformation fuel injector for engine shown in Figure 1, comprise enclosing housing 1; Oil-feed interface 2 is provided with support platform 3 on the inwall of said enclosing housing 1,3 places are provided with elastic valve plate 4 at said support platform; Said elastic valve plate 4 is supported by said support platform 3; On said support platform 3, be provided with support platform sealing surface 30, on said elastic valve plate 4, establish valve block sealing surface 40, said support platform sealing surface 30 matches with said valve block sealing surface 40; On said support platform and/or said elastic valve plate 4, establish passage 304; Matching at said elastic valve plate 4 and said support platform 3 forms seal area 31 and UNICOM district 32, and said support platform sealing surface 30 is made as the plane, the conical surface or curved surface simultaneously with said valve block sealing surface 40; Said elastic valve plate 4 is separated into epicoele 101 and cavity of resorption 102 with the inner chamber of said enclosing housing 1; Said cavity of resorption 102 is fuel distribution district 5, and said epicoele 101 is through said oil-feed interface 2 and oil pipe 6 and pulse in correct time fuel source 7 UNICOMs, and the wall in said fuel distribution district 5 is provided with fuel injection hole 8.
See also Fig. 4,5,6,7,8,11, the valve sheet deformation fuel injector for engine shown in 13 and 15, said enclosing housing 1 is made as upper shell 11 and lower shell body 12, and said upper shell 11 directly or through adjustment pad 13 is tightly connected with said lower shell body 12.
See also the valve sheet deformation fuel injector for engine shown in Fig. 6 and 8, in the said epicoele 101 of said enclosing housing 1, be provided with elastic valve plate precompressed positioning rod 9.
See also Fig. 7,11, the valve sheet deformation fuel injector for engine shown in 13 and 15, in said enclosing housing 1 said epicoele 101, be provided with elastic valve plate retaining spring 10.
See also Fig. 6,7, the valve sheet deformation fuel injector for engine shown in 8 and 11, said passage 304 be located at said elastic valve plate 4 near the axis place.
See also Fig. 6,7, the valve sheet deformation fuel injector for engine shown in 8 and 11, said passage 304 be located at said support platform 3 near the axis place.
See also the valve sheet deformation fuel injector for engine shown in Figure 13 and 14; Said passage 304 be located at said support platform 3 away from the axis place; Said elastic valve plate 4 is made as scratches shaft type elastic valve plate 41; Scratch on said and be provided with positioning shaft 14 on the shaft type elastic valve plate 41, the positioning hole of said positioning shaft 14 and said enclosing housing 1 location of sliding.
See also Fig. 2, the valve sheet deformation fuel injector for engine shown in 11 and 15, said 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. a valve sheet deformation fuel injector for engine comprises: enclosing housing (1), oil-feed interface (2); It is characterized in that: on the inwall of said enclosing housing (1), be provided with support platform (3); Locate to be provided with elastic valve plate (4) at said support platform (3), said elastic valve plate (4) is supported by said support platform (3), on said support platform (3), is provided with support platform sealing surface (30); On said elastic valve plate (4), establish valve block sealing surface (40); Said support platform sealing surface (30) matches with said valve block sealing surface (40), on said support platform and/or said elastic valve plate (4), establishes passage (304), and matching at said elastic valve plate (4) and said support platform (3) forms seal area (31) and UNICOM district (32); Said support platform sealing surface (30) and said valve block sealing surface (40) are made as the plane simultaneously; The conical surface or curved surface, said elastic valve plate (4) is separated into epicoele (101) and cavity of resorption (102) with the inner chamber of said enclosing housing (1), and said cavity of resorption (102) is fuel distribution district (5); Said epicoele (101) is through said oil-feed interface (2) and oil pipe (6) and pulse in correct time fuel source (7) UNICOM; Said elastic valve plate is not opened the hole on (4), and the wall in said fuel distribution district (5) is provided with fuel injection hole (8), and said enclosing housing is not established center valve body in (1).
2. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: said enclosing housing (1) is made as upper shell (11) and lower shell body (12), and said upper shell (11) directly or through adjustment pad (13) is tightly connected with said lower shell body (12).
3. valve sheet deformation fuel injector for engine according to claim 1 or claim 2 is characterized in that: in the said epicoele (101) of said enclosing housing (1), be provided with elastic valve plate precompressed positioning rod (9).
4. valve sheet deformation fuel injector for engine according to claim 1 or claim 2 is characterized in that: in the said epicoele (101) of said enclosing housing (1), be provided with elastic valve plate retaining spring (10).
5. valve sheet deformation fuel injector for engine according to claim 1 is characterized in that: said passage (304) be located at said elastic valve plate (4) near the axis place.
6. valve sheet deformation fuel injector for engine according to claim 1 is characterized in that: said passage (304) be located at said support platform (3) near the axis place.
7. valve sheet deformation fuel injector for engine according to claim 1; It is characterized in that: said passage (304) be located at said support platform (3) away from the axis place; Said elastic valve plate (4) is made as scratches shaft type elastic valve plate (41); Scratch on said and be provided with positioning shaft (14) on the shaft type elastic valve plate (41), the positioning hole of said positioning shaft (14) and said enclosing housing (1) location of sliding.
8. valve sheet deformation fuel injector for engine according to claim 1, it is characterized in that: said 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 CN101592112A (en) | 2009-12-02 |
| CN101592112B true CN101592112B (en) | 2012-06-27 |
Family
ID=41406948
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) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805891A (en) * | 1954-04-05 | 1957-09-10 | Mcculloch Motors Corp | Fluid spray nozzle |
| CN1141664A (en) * | 1994-12-20 | 1997-01-29 | 罗伯特·博施有限公司 | Fuel injection valve for internal combustion engines |
-
2009
- 2009-04-24 CN CN2009101360323A patent/CN101592112B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805891A (en) * | 1954-04-05 | 1957-09-10 | Mcculloch Motors Corp | Fluid spray nozzle |
| CN1141664A (en) * | 1994-12-20 | 1997-01-29 | 罗伯特·博施有限公司 | Fuel injection valve for internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101592112A (en) | 2009-12-02 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20150424 |
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| EXPY | Termination of patent right or utility model |