CN203441659U - Oil injector assembly embedded into cylinder cover of diesel engine and used for injecting and returning oil - Google Patents
Oil injector assembly embedded into cylinder cover of diesel engine and used for injecting and returning oil Download PDFInfo
- Publication number
- CN203441659U CN203441659U CN201320462746.5U CN201320462746U CN203441659U CN 203441659 U CN203441659 U CN 203441659U CN 201320462746 U CN201320462746 U CN 201320462746U CN 203441659 U CN203441659 U CN 203441659U
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- China
- Prior art keywords
- oil
- pressure oil
- adapter
- high pressure
- injector assembly
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- Withdrawn - After Issue
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Abstract
The utility model discloses an oil injector assembly embedded into a cylinder cover of a diesel engine and used for injecting and returning oil. The oil injector assembly consists of an oil injector (3), a high-pressure oil adapter (2) and a gasket (4), wherein an axial platform (P) is machined on the circumferential surface of a cylindrical stage on the upper segment of the oil injector (3); a radial screw hole (M) is formed, and is matched with a screw tube head (L) at the front end of the high-pressure oil adapter (2); the gasket (4) is arranged at the joint of the radial screw hole (M); a three-way joint (10) and a three-way gasket (11) are assembled at the back end of the high-pressure oil adapter (2); an adapter nut (1) is sleeved at the back end of the high-pressure oil adapter (2), and is connected with an oil tube (9); the cylindrical stage at the upper end of the three-way joint (10) is provided with a sealing groove (C) in which a sealing ring (Q) is sleeved; an oil return channel (S) is formed in the three-way joint (10), and a sealing ring (Q) is sleeved in the oil return channel (S). The oil injector assembly has the advantages of simple structure, convenience in installation and high matching performance, and can be widely applied to fuel injection systems of diesel engines.
Description
Technical field
The utility model relates to matched with diesel engine parts, relates in particular to oil sprayer.
Background technique
Oil sprayer is the crucial matching parts of diesel engine, while installing and using, to take over and be connected with high pressure oil, and with briquetting, oil sprayer is fixed, the cone match mode that adopts that is connected of at present oil sprayer and high pressure oil adapter more, by applying axial force in high pressure oil adapter rear end, push, play sealing combination, oil sprayer briquetting contacts cooperation with oil sprayer upper end upper thread, the fixing fuel injector by applying axial direction active force, this Placement needs higher bevel precision, manufacture cost is higher, take over vertical cooperation with high pressure oil, under radial force effect, oil sprayer there will be inclination, cause seal failure, high pressure oil leaks, the drop point that makes oil burning jet be mapped to firing chamber does not reach desired location, to directly affect diesel engine performance.Serious high pressure oil also leaks can dilute lubricating oil, causes internal-combustion engine to damage.
Model utility content
The purpose of this utility model, improves the Placement that oil sprayer and high pressure oil are taken over exactly, strengthens fitted seal, and dismounting is quick, safe ready, rational in infrastructure, be easy to manufacture, reduce costs, reduce and leak, prevent accident, increase the service life, guarantee host performance.
Task of the present utility model completes like this: the injector assembly that manufactures and designs the built-in oil inlet and oil return of a kind of diesel engine cylinder cover, by oil sprayer, high pressure oil adapter, pad, constituted, on the cylinder table circumferential surface of oil sprayer epimere, process axial platform, in axial platform, offer radially screw, it is screwed pipe head that high pressure oil is taken over front end; Match with the radially screw on oil sprayer, in the joint of screw radially, be provided with pad.High pressure oil is taken over the equipped tee union in rear end and threeway pad, and Female connector fittings is sleeved on the rear end that high pressure oil is taken over, connected pipes, and tee union is provided with drainback passage, suit seal ring.On oil sprayer epimere cylinder table, have a circle seal groove, suit seal ring.The end face that high pressure oil is taken over anterior screwed pipe head will carry out precision processing, contacts cooperation with pad, when the radially screw of high pressure oil adapter screwed pipe head and oil sprayer is equipped with, pad extrusion, in centre, is realized to plane sealing.With instrument spinning high pressure oil, take over the nut of rear end, make front end screwed pipe head and oil sprayer radially screw coordinate firmly, finally tee union and supporting threeway pad thereof are pressed into the rear end of high pressure oil adapter and fix with bolt, drainback passage suit seal ring is set on tee union, the low-voltage fuel that oil sprayer spill port flows out flows back to fuel tank through drainback passage, and seal ring stops the axial leakage of oil return.
According to technique scheme, manufacture experimently, test, proof the utility model is simple in structure, reasonable in design, easy for installation, use safety, be easy to manufacturing, 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, has reached preferably predeterminated target.
Accompanying drawing explanation
Fig. 1 is linkage structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of each isolation of components of Fig. 1;
Fig. 3 is mounting point of the present utility model 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, the screw of M-radially, Q-seal ring, R-fuel outlet, D-adapter hole, S-drainback passage.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is illustrated.
Consult Fig. 1, Fig. 2, high pressure oil is taken over 2 the equipped union nut 1 in rear end, the screwed pipe head L band pad 4 of front end, and the supporting installing of radially screw M with on oil sprayer 3 top peripheries, is connected firmly.High pressure oil is taken over the oil pipe 9 that 2 rear ends connect Injection Pump, to the interior input fuel oil of oil sprayer 3.On oil sprayer 3 top cylinder table peripheries, process axial platform P, have radially screw M, the screwed pipe head L that takes over 2 front ends across pad 4 and high pressure oil is equipped, has a circle seal groove C on oil sprayer 3 top bodies, embedded sealing ring Q in groove.Tighten union nut 1, high pressure oil can be taken over to the radially screw M that 2 front end screwed pipe head L are pressed into oil sprayer 3, pad 4 plays fastening, seal action in centre, prevent joint fuel leakage.
Consult Fig. 3, the utility model is installed in cylinder cap 6 inner faces at diesel engine cylinder block top.Before packing cylinder cap 6 into, first pad 4 is placed in the radially screw M of oil sprayer 3, again by oil sprayer 3 at right angle settings in cylinder cap 6 inner faces of diesel engine, then high pressure oil is taken over to the 2 adapter hole D from cylinder cap 6 sides and insert suit, with instrument rotation high pressure oil, take over the union nut 1 of 2 rear ends, make high pressure oil take over the screwed pipe head L of 2 front ends and the radially screw M of oil sprayer 3 is connected and fixed, finally tee union 10 and threeway pad 11 are pressed into high pressure oil and take over 2 rear ends, with bolt, fix, tee union 10 is provided with drainback passage S, equipped seal ring Q.The spill port H of oil sprayer 3 flows out low-voltage fuel and by oil pipe 9, flows back to fuel tank through taking over the drainback passage S of hole D and tee union 10, and seal ring Q plugging gap prevents that oil return from occurring axial leakage along high pressure oil adapter 2.Oil sprayer 3 hypomere suit copper sheathings 7, bottom suit copper packing 8, is installed in cylinder cap 6 bodies.
Oil sprayer 3 of the present utility model and high pressure oil are taken over 2 and are adopted thread connecting mode, simple in structure, are connected firmly, be easy to manufacturing, install pad 4 sealings additional, good connecting effect, easy for installation, use safety, prevented fuel leakage, guarantee oil sprayer 3 normal operations, matching performance is good, and operating cost is low, long service life, host work is stable, has reduced 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 being constituted by oil sprayer (3), high pressure oil adapter (2), pad (4), on the cylinder table circumferential surface of oil sprayer (3) epimere, process axial platform (P), in axial platform (P), offer radially screw (M), it is screwed pipe head (L) that high pressure oil is taken over (2) front end, match with the radially screw (M) on oil sprayer (3), in the joint of screw (M) radially, be provided with pad (4).
2. according to the injector assembly of the built-in oil inlet and oil return of diesel engine cylinder cover claimed in claim 1, it is characterized in that the described equipped tee union (10) in high pressure oil adapter (2) rear end and threeway pad (11), union nut (1) is sleeved on the rear end that high pressure oil is taken over (2), connecting tube joint (5), tee union (10) is provided with drainback passage (S), suit seal ring (Q).
3. according to the injector assembly of the built-in oil inlet and oil return of diesel engine cylinder cover claimed in claim 1, it is characterized in that having a circle seal groove (C) on described oil sprayer (3) epimere cylinder table suit seal ring (Q).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462746.5U CN203441659U (en) | 2013-07-31 | 2013-07-31 | Oil injector assembly embedded into cylinder cover of diesel engine and used for injecting and returning oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320462746.5U CN203441659U (en) | 2013-07-31 | 2013-07-31 | Oil injector assembly embedded into cylinder cover of diesel engine and used for injecting and returning oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441659U true CN203441659U (en) | 2014-02-19 |
Family
ID=50092718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320462746.5U Withdrawn - After Issue CN203441659U (en) | 2013-07-31 | 2013-07-31 | Oil injector assembly embedded into cylinder cover of diesel engine and used for injecting and returning oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441659U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334858A (en) * | 2013-07-31 | 2013-10-02 | 山东鑫亚工业股份有限公司 | Embedded oil inlet-return injector assembly of diesel engine cylinder cover |
| CN111120169A (en) * | 2019-11-21 | 2020-05-08 | 浙江赫洛金属制品有限公司 | Connecting joint for automobile fuel injector |
-
2013
- 2013-07-31 CN CN201320462746.5U patent/CN203441659U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334858A (en) * | 2013-07-31 | 2013-10-02 | 山东鑫亚工业股份有限公司 | Embedded oil inlet-return injector assembly of diesel engine cylinder cover |
| CN111120169A (en) * | 2019-11-21 | 2020-05-08 | 浙江赫洛金属制品有限公司 | Connecting joint for automobile fuel injector |
| CN111120169B (en) * | 2019-11-21 | 2021-03-12 | 浙江赫洛金属制品有限公司 | Connecting joint for automobile fuel injector |
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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: 20140219 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |