CN103334858B - Embedded oil inlet-return injector assembly of diesel engine cylinder cover - Google Patents
Embedded oil inlet-return injector assembly of diesel engine cylinder cover Download PDFInfo
- Publication number
- CN103334858B CN103334858B CN201310327983.5A CN201310327983A CN103334858B CN 103334858 B CN103334858 B CN 103334858B CN 201310327983 A CN201310327983 A CN 201310327983A CN 103334858 B CN103334858 B CN 103334858B
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- Prior art keywords
- oil
- high pressure
- pressure oil
- diesel engine
- injector assembly
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Links
- 238000000034 method Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 67
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to an embedded oil inlet-return injector assembly of a diesel engine cylinder cover. The embedded oil inlet-return injector assembly consists of an oil injector (3), a high pressure oil receiving pipe (2) and a washer (4), wherein an axial platform (P) is machined on the circumferential surface of a cylindrical platform on the upper section of the oil injector (3), a radial screw hole (M) which is arranged on the axial platform (P) is assembled with a spiral pipe head (L) on the front end of the high-pressure oil receiving pipe (2), the washer (4) is arranged on the junction of the radial screw hole (M), a three-way connector (10) and a three-way washer (11) are arranged on the rear end of the high-pressure oil receiving pipe (2), a connector nut (1) is sleeved on the rear end of a high-pressure oil receiving pipe (1) to be connected with an oil pipe, a sealing groove (C) is arranged on the cylindrical platform on the upper end of the three-way connector (10), a sealing ring (Q) is sleeved on the cylindrical platform on the upper end of the three-way connector (10), an oil return passage is arranged inside the three-way connector (10), and the sealing ring (Q) is embedded in the oil return passage. The embedded oil inlet-return injector assembly is simple in structure, convenient to install and good in matching performance and can be widely applied to a fuel injection system of a diesel engine.
Description
Technical field
The present invention relates to matched with diesel engine parts, particularly relate to oil sprayer.
Background technique
Oil sprayer is the crucial matching parts of diesel engine, to take over high pressure oil when installing and using and be connected, and with briquetting, oil sprayer is fixed, the connection that current oil sprayer and high pressure oil are taken over adopts cone match mode more, extrude by applying axial force in high pressure oil adapter rear end, play sealing combination, oil sprayer briquetting coordinates with oil sprayer upper-end surface linear contact lay, the fixing fuel injector by applying axial direction active force, this Placement needs higher bevel precision, manufacture cost is higher, vertical cooperation is taken over high pressure oil, under radial force effect, oil sprayer there will be inclination, cause seal failure, high pressure oil leaks, the drop point making oil burning jet be mapped to firing chamber does not reach desired location, directly will affect diesel engine performance.Serious high pressure oil leaks also can dilute lubricating oil, causes internal-combustion engine to damage.
Summary of the invention
Object of the present invention, be exactly the Placement that improvement oil sprayer and high pressure oil are taken over, strengthen fitted seal, dismounting is quick, and safe ready is rational in infrastructure, is easy to manufacture, reduces costs, reduce leakage, prevent accident, increase the service life, ensure host performance.
Task of the present invention completes like this: the injector assembly manufacturing and designing the built-in oil inlet and oil return of a kind of diesel engine cylinder cover, comprise oil sprayer, high pressure oil adapter, pad, combination is formed, the cylinder table circumferential surface of oil sprayer epimere processes axial platform, axial platform is offered radial screw, high pressure oil adapter front end is screwed pipe head, matches, be provided with pad in the joint of radial screw with the radial screw on oil sprayer; High pressure oil adapter rear portion suit seal ring, equipped tee union, tee union is provided with drainback passage.High pressure oil adapter rear end suit union nut, connecting tube joint, the joint of tee union and cylinder cap is provided with threeway pad.Oil sprayer epimere cylinder table has a circle seal groove, suit seal ring.The end face of the screwed pipe head that high pressure oil adapter is anterior will carry out precision process, coordinates with pad contacts, when the radial screw of the screwed pipe head that high pressure oil adapter is anterior and oil sprayer is equipped with, by pad extrusion in centre, realizes plane sealing.With the nut of instrument spinning high pressure oil adapter rear end, the radial screw of front end screwed pipe head and oil sprayer is made to coordinate firmly, the rear end finally tee union and supporting threeway pad press-in high pressure oil thereof taken over also is fixed with bolt, tee union is arranged drainback passage suit seal ring, the low-voltage fuel that oil return of oil injector hole is flowed out flows back to fuel tank through drainback passage, and seal ring stops the axial leakage of oil return.
Carry out manufacturing experimently, testing according to technique scheme, prove that structure of the present invention is simple, reasonable in design, easy for installation, use safety, is easy to manufacturing, and cost is low, and matching performance is good, be connected firmly, good airproof performance, can be widely used in the fuel injection system of diesel engine, reach predeterminated target preferably.
Accompanying drawing explanation
Fig. 1 is linkage structure schematic diagram of the present invention;
Fig. 2 is the structural representation of each isolation of components of Fig. 1;
Fig. 3 is mounting point of the present invention structural representation.
In figure, 1-union nut, 2-high pressure oil is taken over, 3-oil sprayer, 4-pad, 5-pipe joint, 6-cylinder cap, 7-copper sheathing, 8-copper packing, 9-oil pipe, 10-tee union, 11-threeway pad; C-seal groove, P-axial platform, H-spill port, L-screwed pipe head, M-radial screw, Q-seal ring, R-fuel outlet, D-adapter hole, S-drainback passage.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is illustrated.
Consult Fig. 1, Fig. 2, the rear end of high pressure oil adapter 2 is equipped with union nut 1, and the screwed pipe head L of front end is with pad 4, and the supporting installing of radial screw M with on the periphery of oil sprayer 3 top, is connected firmly.High pressure oil adapter 2 rear end connects the oil pipe 9 of Injection Pump, in oil sprayer 3, input fuel oil.Oil sprayer 3 Upper cylindrical platform periphery processes axial platform P, has radial screw M, be equipped with across the screwed pipe head L of pad 4 with high pressure oil adapter 2 front end, oil sprayer 3 top body have a circle seal groove C, embedded sealing ring Q in groove.Tighten union nut 1, high pressure oil adapter 2 front end screwed pipe head L can be pressed into the radial screw M of oil sprayer 3, pad 4 plays fastening, seal action in centre, prevents joint fuel leakage.
consult Fig. 3, the present invention is installed in cylinder cap 6 inner face at diesel engine cylinder block 9 top.Before loading cylinder cap 6, first pad 4 is placed in the radial screw M of oil sprayer 3, again oil sprayer 3 is installed vertically on cylinder cap 6 inner face of diesel engine, then high pressure oil adapter 2 is inserted suit from the adapter hole D of cylinder cap 6 side, with the union nut 1 of instrument rotary high pressure oil adapter 2 rear end, the radial screw M of the screwed pipe head L of high pressure oil adapter 2 front end and oil sprayer 3 is connected and fixed, and high pressure oil adapter 2 back segment is equipped with seal ring Q, suit tee union 10; Tee union 10 is fitted in high pressure oil adapter 2 rear end, and tee union 10 and threeway pad 11 are connected with the adapter hole D on cylinder cap 6 is equipped, and tee union 10 is provided with drainback passage S, is communicated with the adapter hole D on cylinder cap 6; The low-voltage fuel of the spill port H outflow of oil sprayer 3, through taking over the drainback passage S of hole D and tee union 10, flows back to fuel tank by oil pipe 9.High pressure oil adapter 2 back segment is equipped with seal ring Q, the matching gap of shutoff tee union 10, prevents oil return from occurring axial leakage along high pressure oil adapter 2.Oil sprayer 3 hypomere suit copper sheathing 7, bottom suit copper packing 8, is installed in cylinder cap 6 body.
Oil sprayer 3 of the present invention and high pressure oil adapter 2 adopt thread connecting mode, and structure is simple, is connected firmly, be easy to manufacturing, install pad 4 additional and seal, good connecting effect, easy for installation, use safety, prevents fuel leakage, ensure that oil sprayer 3 normally works, supporting good seal performance, operating cost is low, long service life, guarantee that host work is stablized, reduce fault, can be widely used in the fuel injection system of diesel engine.
Claims (3)
1. the injector assembly of the built-in oil inlet and oil return of diesel engine cylinder cover, it is characterized in that comprising oil sprayer (3), high pressure oil adapter (2), pad (4), the cylinder table circumferential surface of oil sprayer (3) epimere processes axial platform (P), axial platform (P) is offered radial screw (M), high pressure oil adapter (2) front end is screwed pipe head (L), match with the radial screw (M) on oil sprayer (3), be provided with pad (4) in the joint of radial screw (M); Rear portion suit seal ring (Q) of high pressure oil adapter (2), equipped tee union (10), tee union (10) is provided with drainback passage (S).
2. according to the injector assembly of the built-in oil inlet and oil return of diesel engine cylinder cover according to claim 1, it is characterized in that described high pressure oil adapter (2) rear end is equipped with union nut (1), connecting tube joint (5), tee union (10) is provided with threeway pad (11) with the joint of cylinder cap (6).
3. according to the injector assembly of the built-in oil inlet and oil return of diesel engine cylinder cover according to claim 1, it is characterized in that described oil sprayer (3) epimere cylinder table has a circle seal groove (C), suit seal ring (Q).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310327983.5A CN103334858B (en) | 2013-07-31 | 2013-07-31 | Embedded oil inlet-return injector assembly of diesel engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310327983.5A CN103334858B (en) | 2013-07-31 | 2013-07-31 | Embedded oil inlet-return injector assembly of diesel engine cylinder cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334858A CN103334858A (en) | 2013-10-02 |
| CN103334858B true CN103334858B (en) | 2015-06-17 |
Family
ID=49243063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310327983.5A Active CN103334858B (en) | 2013-07-31 | 2013-07-31 | Embedded oil inlet-return injector assembly of diesel engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103334858B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760269Y (en) * | 2004-06-03 | 2006-02-22 | 上海柴油机股份有限公司 | Diesel engine fuel injector scavenge pipe with hexagonal header |
| CN2821187Y (en) * | 2005-08-25 | 2006-09-27 | 周书田 | Lengthening type porous oil spray |
| CN2893194Y (en) * | 2005-12-10 | 2007-04-25 | 潍柴动力股份有限公司 | Diesel engine fuel injection device |
| CN201059233Y (en) * | 2007-06-25 | 2008-05-14 | 潍柴动力股份有限公司 | Injector fuel oil returning structure |
| CN102678414A (en) * | 2012-05-02 | 2012-09-19 | 欧阳光耀 | Piezoelectric injector for diesel engine |
| CN203441659U (en) * | 2013-07-31 | 2014-02-19 | 山东鑫亚工业股份有限公司 | Oil injector assembly embedded into cylinder cover of diesel engine and used for injecting and returning oil |
-
2013
- 2013-07-31 CN CN201310327983.5A patent/CN103334858B/en active Active
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| Publication number | Publication date |
|---|---|
| CN103334858A (en) | 2013-10-02 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160418 Address after: 252000 No. 1 middle Yangtze Road, Liaocheng hi tech Zone, Shandong Patentee after: Shandong Colin Power Technology Co., Ltd. Address before: 252000 No. 1 middle Yangtze Road, Liaocheng economic and Technological Development Zone, Shandong, China Patentee before: Shandong Xinya Industry Co., Ltd. Patentee before: Changzhou Yameike Mechanical Equipment Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Embedded oil inlet-return injector assembly of diesel engine cylinder cover Effective date of registration: 20180118 Granted publication date: 20150617 Pledgee: Bank of Beijing Limited by Share Ltd Liaocheng branch Pledgor: Shandong Colin Power Technology Co., Ltd. Registration number: 2018370000015 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180817 Granted publication date: 20150617 Pledgee: Bank of Beijing Limited by Share Ltd Liaocheng branch Pledgor: Shandong Colin Power Technology Co., Ltd. Registration number: 2018370000015 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Embedded oil inlet-return injector assembly of diesel engine cylinder cover Effective date of registration: 20190129 Granted publication date: 20150617 Pledgee: Liaocheng Tianhong Financing Guarantee Co., Ltd. Pledgor: Shandong Colin Power Technology Co., Ltd. Registration number: 2019370000022 |