CN1546855A - Sealing device for common rail Injector of diesel engine - Google Patents
Sealing device for common rail Injector of diesel engine Download PDFInfo
- Publication number
- CN1546855A CN1546855A CNA2003101093541A CN200310109354A CN1546855A CN 1546855 A CN1546855 A CN 1546855A CN A2003101093541 A CNA2003101093541 A CN A2003101093541A CN 200310109354 A CN200310109354 A CN 200310109354A CN 1546855 A CN1546855 A CN 1546855A
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- oil
- fuel
- working oil
- diesel engine
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Abstract
The invention is a kind of sealing device for diesel engine common rail injector, which is a sealing device for inputting the fuel oil and the working oil into the diesel engine and fixing them on the cylinder cover, which is made up of sealing device body, sealing ring, corrugation sealing ring and cushion ring, there process a fuel channel and a working oil channel on the sealing device body, the two kinds of oil are transmitted into the common rail injector through the two channels, the sealing device is connected to the injector through bolt, the whole sealing device is fixed on the cylinder cover through bolt, adjusts the height of the common rail injector spout in the cylinder through changing the thickness of the cushion.
Description
Technical field:
The present invention relates to a kind of seal arrangement that is used for the common rail for diesel engine oil sprayer, especially relate to a kind of can be with the seal arrangement in diesel engine fuel oil and the working oil input common rail for diesel engine oil sprayer, and can adjust the height of common rail for diesel engine fuel injector nozzle in cylinder.
Background technique:
Diesel engine be a kind ofly be widely used, demand is big, the thermal efficiency is high dynamic power machine, yet the noxious emission composition granule that its is discharged is more much higher than petrol engine.Use the quality that common-rail injection system can improve the diesel engine fuel oil atomizing greatly, thereby improve diesel combustion, reduce the discharging of particulate matter.Should make fuel oil and working oil safety enter common-rail injector, again former cylinder cap be changed seldom, be common-rail injector can successful Application on existing diesel engine a very important problem, this just must have a seal arrangement.Retrieval to prior art, find document: " HEUI-A New Direction for Diesel Engine Fuel Systems ", SAE930270, S.F.Glassey, A.R.Stocker, and M.A.Flinn, Caterpillar Inc. (HEUI (hydraulic type electronic oil injection device)-the be used for new oil sprayer on the diesel fuel system, the SAE paper, numbering: SAE Paper 930270), this article has been introduced working oil and fuel oil imported respectively in the common rail for diesel engine oil sprayer and with oil sprayer and has been fixed on the mode that cylinder of diesel engine covers.This mode is, is processed with working oil and fuel gallery on cylinder head, and working oil and fuel oil enter in the common rail for diesel engine oil sprayer by the passage on the cylinder head.In common rail for diesel engine oil sprayer bottom a thin-walled cover is arranged, common rail for diesel engine oil sprayer and cooling water are separated.By bolt the common rail for diesel engine oil sprayer directly is fixed on the cylinder head.
The main inconvenience of this mode is, the mounting diesel engine common-rail injector will be transformed cylinder head up hill and dale on existing diesel, and this transformation makes the air cylinder head structure complexity, and processing is inconvenient on existing cylinder head, the cost height, and the common rail for diesel engine fuel injector nozzle is adjusted in the inconvenience of cylinder inner height.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, a kind of seal arrangement that is used for the common rail for diesel engine oil sprayer is provided, fuel oil and working oil are directly entered in the common rail for diesel engine oil sprayer by the sealing device, need not in diesel engine cylinder cover processing working oil and fuel gallery, and the height of common rail for diesel engine fuel injector nozzle in cylinder can be adjusted.
For realizing such purpose, seal arrangement provided by the invention comprises seal arrangement body, seal ring, ripple seal ring and packing ring, opposite direction has fuel gallery and working oil passage on the seal arrangement body wall, fuel gallery one end and working oil passage one end join with fuel oil bolt and working oil bolt respectively, the other end of two passages joins with common rail for diesel engine oil sprayer fuel inlet and working oil import respectively, and fuel oil and working oil enter in the common rail for diesel engine oil sprayer by fuel gallery and working oil passage respectively.Seal ring, ripple seal ring and packing ring are placed in seal arrangement body boss bottom, by two bolts common-rail injector is fixed on the seal arrangement body, by two other fixing bolt common rail for diesel engine oil sprayer and this seal arrangement are fixed on the cylinder head again, compress seal ring, ripple seal ring and packing ring and guarantee sealing between this device and the cylinder head.
Seal arrangement of the present invention is compared with existing technology has following advantage: because this seal arrangement has fuel gallery and working oil passage simultaneously, fuel oil and working oil can directly enter in the diesel injector by fuel gallery and working oil passage, need not processing fuel gallery and working oil passage on cylinder head; Seal ring, ripple seal ring and packing ring are arranged below the seal arrangement boss, can adjust the height of diesel injector nozzle in cylinder by the thickness of adjusting packing ring easily, it is highly adhered to specification.
Description of drawings:
Fig. 1 is apparatus of the present invention structural front view.
Among Fig. 1, common-rail injector 1, plug screw 2, fuel oil bolt 3, seal ring 4 on the common-rail injector working oil, cylinder head 5, fuel gallery 6, common-rail injector working oil lower seal 7, common-rail injector fuel sealing circle 8, seal ring 9, ripple seal ring 10, cylinder head cooling water channel 11, packing ring 12, common-rail injector nozzle 13, working oil return opening 14, working oil passage 15, working oil bolt 16, sealing surface 17 on the working oil, working oil filler opening 18, sealing surface 19 on the fuel oil, fuel oil oil-feed tank 20, fuel oil oil inlet hole 21, fuel oil lower sealing surface 22, seal arrangement body 23.
Fig. 2 is an A-A sectional top view among Fig. 1.
Among Fig. 2, fixing bolt 24, bolt 25.
Embodiment:
Below in conjunction with accompanying drawing embodiments of the present invention are further described.
Fig. 1 is apparatus of the present invention structural front view.As shown in Figure 1, seal arrangement of the present invention comprise seal arrangement body 23 and with common-rail injector 1, the seal ring 9 of sealing between the cylinder head 5, ripple seal ring 10 and packing ring 12 etc., opposite direction is processed with fuel gallery 6 and working oil passage 15 on seal arrangement body 23 walls, the straight passage port of fuel gallery 6 and working oil passage 15 is provided with plug screw 2, curved access port connects fuel oil bolt 3 and working oil bolt 16 respectively, fuel gallery 6 joins with fuel oil oil-feed tank 20, and be communicated with the fuel oil oil inlet hole 21 of common rail for diesel engine oil sprayer through fuel oil oil-feed tank 20, by sealing surface on the fuel oil 19, common-rail injector fuel sealing circle 8, fuel oil lower sealing surface 22 guarantees the sealing of fuel oil.Working oil bolt 16 joins with working oil passage 15, working oil passage 15 joins with the working oil filler opening 18 of common rail for diesel engine oil sprayer, guarantees the sealing of working oil by sealing surface 17, common-rail injector working oil lower seal 7 on seal ring 4, the working oil on the common-rail injector working oil.Working oil enters in the common-rail injector 1 from working oil filler opening 18, from 14 oil returns of working oil return opening, seal ring 9, ripple seal ring 10 and packing ring 12 are placed in seal arrangement body 23 boss bottoms, are used for guaranteeing the sealing of the cooling water and the cylinder of cylinder head cooling water channel 11.
Fig. 2 is an A-A sectional top view among Fig. 1.As shown in Figure 2, staggered bolt 25 and the fixing bolt 24 of being equipped with in seal arrangement body of the present invention 23 upper ends, seal arrangement body 23 is affixed by bolt 25 and common-rail injector 1, and whole device then is installed on the cylinder head 5 by fixing bolt 24.
When processing fuel gallery 6 and working oil passage 15, with plug screw 2 grades the straight passage port of processing is blocked, can form fuel gallery 6 and working oil passage 15, simultaneously, when fuel oil enters the common rail for diesel engine oil sprayer, in apparatus of the present invention body 23, be processed with fuel oil oil-feed tank 20, make fuel oil that a surge volume, the pressure surge of slowing oil be arranged when common rail for diesel engine oil sprayer fuel hole 21 enters common rail for diesel engine oil sprayer 1.Fuel oil oil-feed bolt 3 and working oil oil-feed bolt 16 installation in alignment on apparatus of the present invention, two fixing bolts 24 become 90 ° of layouts with it.Before apparatus of the present invention body 23 is installed on the cylinder head 5, need with whether leakage of oil between 20MPa pressure check it and the common-rail injector 1.When seal ring 9,10 compressions of ripple seal ring relatively large elasticity and extending amount are arranged, just can adjust the suitable height of nozzle 13 in cylinder, the cooling water in the assurance cylinder head cooling water channel 11 and the sealing of cylinder by the thickness of adjusting packing ring 12.Two boss of seal arrangement body 23 processing are in order to guarantee the intensity of cylinder head 5.During installation, earlier seal ring 9 is installed on the seal arrangement body 23, again common rail for diesel engine oil sprayer 1 is put on apparatus of the present invention body 23, tight a bolt and 25 common rail for diesel engine oil sprayer 1 is fixed on the seal arrangement body 23, again ripple seal ring 10 and packing ring 12 are placed on cylinder head 5 inner convex platforms, seal arrangement body 23 is put into 5 li of cylinder head, use fixing bolt 24 its installation.Measure the height of common rail for diesel engine fuel injector nozzle 13 in cylinder, guarantee that by the packing ring 12 of adjusting different-thickness the height of common rail for diesel engine fuel injector nozzle 13 in cylinder adheres to specification.
Claims (1)
1. seal arrangement that is used for the common rail for diesel engine oil sprayer, comprise seal arrangement body (23), seal ring (9), ripple seal ring (10) and packing ring (12), it is characterized in that opposite direction is processed with fuel gallery (6) and working oil passage (15) on seal arrangement body (23) wall, the straight passage port of fuel gallery (6) and working oil passage (15) is provided with plug screw (2), curved access port connects fuel oil bolt (3) and working oil bolt (16) respectively, fuel gallery (6) is communicated with the fuel oil oil inlet hole (21) of common rail for diesel engine oil sprayer through fuel oil oil-feed tank (20), by sealing surface on the fuel oil (19), common-rail injector fuel sealing circle (8), fuel oil lower sealing surface (22) guarantees the sealing of fuel oil, working oil bolt (16) joins with working oil passage (15), working oil passage (15) joins with the working oil filler opening (18) of common rail for diesel engine oil sprayer, by seal ring (4) on the common-rail injector working oil, sealing surface on the working oil (17), common-rail injector working oil lower seal (7) guarantees the sealing of working oil, seal ring (9), ripple seal ring (10) and packing ring (12) are placed in seal arrangement body (23) boss bottom, be used for guaranteeing the cooling water of cylinder head cooling water channel (11) and the sealing of cylinder, staggered bolt (25) and the fixing bolt (24) of being equipped with in seal arrangement body (23) upper end, seal arrangement body (23) is affixed by bolt (25) and common-rail injector (1), and whole sealing device is installed on the cylinder head (5) by fixing bolt (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101093541A CN1312395C (en) | 2003-12-12 | 2003-12-12 | Sealing device for common rail Injector of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101093541A CN1312395C (en) | 2003-12-12 | 2003-12-12 | Sealing device for common rail Injector of diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1546855A true CN1546855A (en) | 2004-11-17 |
| CN1312395C CN1312395C (en) | 2007-04-25 |
Family
ID=34335152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101093541A Expired - Fee Related CN1312395C (en) | 2003-12-12 | 2003-12-12 | Sealing device for common rail Injector of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1312395C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412353C (en) * | 2006-08-02 | 2008-08-20 | 北京理工大学 | High pressure common rail electric control fuel injector sealing device |
| CN102418636A (en) * | 2011-12-26 | 2012-04-18 | 重庆科克发动机技术有限公司 | Fuel injector lining sealing structure |
| CN102734025A (en) * | 2011-04-15 | 2012-10-17 | 瓦锡兰瑞士公司 | A fluid injection device |
| CN104863747A (en) * | 2015-03-27 | 2015-08-26 | 中国北方发动机研究所(天津) | Oil injector sealing gasket of internal combustion engine |
| CN105114200A (en) * | 2015-07-29 | 2015-12-02 | 东风汽车股份有限公司 | Device and method for connecting valve cover cap and oil injector |
| CN105136436A (en) * | 2015-07-29 | 2015-12-09 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945353A (en) * | 1974-11-29 | 1976-03-23 | Allis-Chalmers Corporation | Two phase nozzle cooling system |
| JPS5350323U (en) * | 1976-10-02 | 1978-04-27 | ||
| JPS59188068A (en) * | 1983-04-08 | 1984-10-25 | Hitachi Zosen Corp | Method of fuel injection in diesel engine and its equipment |
| DE59307709D1 (en) * | 1993-02-08 | 1998-01-02 | Waertsilae Nsd Schweiz Ag | Fuel injection pump for reciprocating internal combustion engines |
| JP2001041127A (en) * | 1999-07-27 | 2001-02-13 | Isuzu Motors Ltd | Injector for internal combustion engine |
-
2003
- 2003-12-12 CN CNB2003101093541A patent/CN1312395C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412353C (en) * | 2006-08-02 | 2008-08-20 | 北京理工大学 | High pressure common rail electric control fuel injector sealing device |
| CN102734025A (en) * | 2011-04-15 | 2012-10-17 | 瓦锡兰瑞士公司 | A fluid injection device |
| KR20120117638A (en) * | 2011-04-15 | 2012-10-24 | 베르트질레 슈바이츠 악티엔게젤샤프트 | A fluid injection device |
| KR101948936B1 (en) * | 2011-04-15 | 2019-04-25 | 빈터투르 가스 앤 디젤 아게 | A fluid injection device |
| CN102418636A (en) * | 2011-12-26 | 2012-04-18 | 重庆科克发动机技术有限公司 | Fuel injector lining sealing structure |
| CN104863747A (en) * | 2015-03-27 | 2015-08-26 | 中国北方发动机研究所(天津) | Oil injector sealing gasket of internal combustion engine |
| CN104863747B (en) * | 2015-03-27 | 2017-10-24 | 中国北方发动机研究所(天津) | A kind of fuel injector for internal combustion engines sealing gasket |
| CN105114200A (en) * | 2015-07-29 | 2015-12-02 | 东风汽车股份有限公司 | Device and method for connecting valve cover cap and oil injector |
| CN105136436A (en) * | 2015-07-29 | 2015-12-09 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN105114200B (en) * | 2015-07-29 | 2017-10-10 | 东风汽车股份有限公司 | Device and method for connecting valve cover cap and oil injector |
| CN105136436B (en) * | 2015-07-29 | 2018-01-16 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1312395C (en) | 2007-04-25 |
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Granted publication date: 20070425 Termination date: 20100112 |