CN201221425Y - High pressure common rail fuel injector - Google Patents
High pressure common rail fuel injector Download PDFInfo
- Publication number
- CN201221425Y CN201221425Y CNU2008200140416U CN200820014041U CN201221425Y CN 201221425 Y CN201221425 Y CN 201221425Y CN U2008200140416 U CNU2008200140416 U CN U2008200140416U CN 200820014041 U CN200820014041 U CN 200820014041U CN 201221425 Y CN201221425 Y CN 201221425Y
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- pressure
- injector body
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title abstract description 5
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 50
- 239000002283 diesel fuel Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a high-voltage common-rail fuel injector, pertaining to an auxiliary device for an automobile diesel engine. To settle the existing problems of like products, a product with a novel structure is developed, consisting of an electromagnetic valve, an oil injector body, a needle valve, a nozzle tip and a control stick. The high-pressure joint is communicated with the central oil cavity hole arranged at the center of the oil injector body; the electronic control system is communicated with the electromagnetic valve, the operation of the needle valve and the control stick matches the operation of the electromagnetic valve, and a spring is arranged on the control stick; and no oil holding groove is arranged for the nozzle tip. The supporting device has the advantages that the oil pressure is stable and the oil pressure drop is small; the difficulty of component processing is lowered, and the processing cost is saved. The test result shows that the effect is sound and well received by users, and the device can be extensively promoted and applied to automobile diesel engine production.
Description
Technical field
The utility model belongs to automobile manufacturing field, is a kind of match equipment of diesel engine of vehicle specifically.
Background technique
Under the control of automatical control system, to the diesel oil cylinder regularly, quantitatively, the injection diesel oil of level pressure power, drive the oil sprayer of the normal operation of diesel engine, be the important device of high pressure co-rail system, but up to now, the like product of market sale exists following problem:
At first, because of unreasonable structure, make the side oil channel oil-feed of high-pressure diesel by oil injector body, cause oil pressure loss big in the injection process, the jet pressure deficiency obviously influences the stability of fuel injection quantity;
Secondly, the fuel injection housing body side surface is provided with high-pressure oil duct, and it is bigger to make processing difficulties; Oil nozzle is provided with oil holding slot, is inconvenient to process; The manufacture cost height;
In addition, the needle-valve two ends are in the high pressure and the low pressure area of oil nozzle respectively, and high-pressure diesel leaks by oil nozzle and needle clearance, easily causes energy loss, also easily because of the stuck needle-valve of the particulate in the diesel oil, causes the oil sprayer fault.
The model utility content
The purpose of this utility model is, problem at above-mentioned existing like product existence, researched and developed a kind of new structure product, high pressure side oil duct with oil sprayer, changing high-pressure diesel into is passed through by the center oil vestibule of oil injector body, again in oil nozzle is ejected into cylinder of diesel engine, to reach the effect of stable oil pressure, reduction product processing cost.
A kind of high pressure common rail injector is to be made of solenoid valve, oil injector body, oil nozzle, needle-valve, each parts of controlling rod, it is characterized in that:
A) the center oil vestibule UNICOM of high pressure joint and oil injector body;
B) electronic control system and solenoid valve are connected, and the operation of controlling rod and needle-valve and the operation of solenoid valve are complementary;
C) the movement parts controlling rod is provided with spring;
D) oil nozzle is not provided with oil holding slot.
Good effect of the present utility model is that oil pressure is stable, oil pressure falls little, the high-pressure diesel of existing oil sprayer is oblique in oil nozzle is spurted into the diesel oil cylinder in the oil injector body side, pressure transient, resistance is big, the utility model high-pressure diesel directly flows to needle-valve by oil injector body center oil vestibule, enters in the diesel oil cylinder by oil nozzle smoothly; The utility model difficulty of processing reduces, and has saved processing cost.
Description of drawings
Fig. 1, the utility model one-piece element equipment configuration figure; Wherein: 1 solenoid valve, 2 control chambers, 3 controlling rods, 4 springs, 5 oil injector bodies, 6 oil nozzles, 7 needle-valves, 8 high pressure joints.
Embodiment
To structure of the present utility model, more specifically described as follows in conjunction with the accompanying drawings:
By accompanying drawing 1 obviously as seen, the rear portion of the oil injector body 5 of the utility model high pressure common rail injector is equipped with solenoid valve 1, front end is equipped with oil nozzle 6, needle-valve 7 is installed in the oil nozzle 6, the rear portion of needle-valve 7 is equipped with controlling rod 3, movement parts needle-valve 7 and controlling rod 3 assemblies are provided with spring 4, are provided with control chamber 2 between controlling rod 3 and the solenoid valve 1; The center oil vestibule UNICOM of high pressure joint 8 and oil injector body 5, electronic control system and solenoid valve 1 are connected, and the operation and the solenoid valve 1 of controlling rod 3 and needle-valve 7 are complementary; Oil nozzle is not provided with oil holding slot.
The utility model is installed on the diesel engine of vehicle, under electronic control system control, and timing in cylinder of diesel engine, quantitative, level pressure power injection diesel oil, the diesel engine of tending to act normally moves.The high-pressure diesel that enters through high pressure joint 8 directly arrives oil nozzle 6 from the center oil vestibule of oil injector body 5, sprays diesel oil process oil pressure and falls seldom, sprays the oil mass fluctuation and obviously improves; When electronic control system was sent signal, solenoid valve 1 was opened, and the oil pressure in the control chamber 2 reduces, and motion assembly controlling rod 3 and needle-valve 7 are to the back end motion of oil injector body 5, and high-pressure diesel sprays cylinder of diesel engine through oil nozzle 6; When the automatical control system instruction, when solenoid valve 1 cut out, controlling rod 3 drove the motion of needle-valve 7 forward end under the effect of spring 4, and oil nozzle 6 sealed closing tight stop to cylinder fuel injection; Oil nozzle is not provided with oil holding slot, processes more conveniently, and oil nozzle intensity further improves.
Claims (1)
1. a high pressure common rail injector is to be made of solenoid valve (1), oil injector body (5), oil nozzle (6), needle-valve (7), each parts of controlling rod (3), it is characterized in that:
The center oil vestibule UNICOM of a) high pressure joint (8) and oil injector body (5);
B) electronic control system and solenoid valve (1) are connected, and the operation of controlling rod (3) and needle-valve (7) and the operation of solenoid valve (1) are complementary;
C) movement parts controlling rod (3) is provided with spring (4);
D) oil nozzle (6) is not provided with oil holding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200140416U CN201221425Y (en) | 2008-07-16 | 2008-07-16 | High pressure common rail fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200140416U CN201221425Y (en) | 2008-07-16 | 2008-07-16 | High pressure common rail fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221425Y true CN201221425Y (en) | 2009-04-15 |
Family
ID=40574933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200140416U Expired - Lifetime CN201221425Y (en) | 2008-07-16 | 2008-07-16 | High pressure common rail fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221425Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967672A (en) * | 2013-02-04 | 2014-08-06 | 辽宁新风企业集团有限公司 | Injection actuator of center hole pressure accumulation type common rail fuel injector |
| CN104314725A (en) * | 2014-09-25 | 2015-01-28 | 辽宁新风企业集团有限公司 | Middle hole pressure storage static leakage-free oil sprayer |
-
2008
- 2008-07-16 CN CNU2008200140416U patent/CN201221425Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967672A (en) * | 2013-02-04 | 2014-08-06 | 辽宁新风企业集团有限公司 | Injection actuator of center hole pressure accumulation type common rail fuel injector |
| CN104314725A (en) * | 2014-09-25 | 2015-01-28 | 辽宁新风企业集团有限公司 | Middle hole pressure storage static leakage-free oil sprayer |
| CN104314725B (en) * | 2014-09-25 | 2019-05-31 | 辽阳钜锋汽车零部件有限公司 | Mesopore pressure accumulation without static leakage fuel injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160224 Granted publication date: 20090415 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |
|
| CX01 | Expiry of patent term | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20180716 Granted publication date: 20090415 |
|
| PD01 | Discharge of preservation of patent |