CN100396908C - Device for damping the closing of an injector needle of a fuel injector - Google Patents
Device for damping the closing of an injector needle of a fuel injector Download PDFInfo
- Publication number
- CN100396908C CN100396908C CNB2004100350938A CN200410035093A CN100396908C CN 100396908 C CN100396908 C CN 100396908C CN B2004100350938 A CNB2004100350938 A CN B2004100350938A CN 200410035093 A CN200410035093 A CN 200410035093A CN 100396908 C CN100396908 C CN 100396908C
- Authority
- CN
- China
- Prior art keywords
- valve needle
- damping
- dampening chamber
- damping ring
- housing
- 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 - Fee Related
Links
- 238000013016 damping Methods 0.000 title claims abstract description 44
- 239000000446 fuel Substances 0.000 title claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 230000002269 spontaneous effect Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The valve needle (1), of a fuel injection valve for an internal combustion motor and especially with spontaneous ignition, has a damping collar (4) and a chamber (5) filled with a damping fluid in the valve housing (2). At the end of the valve closing action, the collar penetrates into the damping fluid. The damping fluid is the motor fuel, with a free flow cross section (7) between the needle and the housing to allow a leakage flow to the damping chamber.
Description
Technical field
The present invention relates to a kind of device that oil nozzle sprays again that is used to reduce, this oil nozzle has a valve needle of guiding in housing.
Background technique
Because valve needle is met on its valve seat and rebound in order to close with higher speed, therefore the spray again that produces oil nozzle.Fuel enters the firing chamber of motor with uncertain amount and small jet pressure at the after end of injection of regulation thus.Therefore combustion process and its Operational Limits to motor has a negative impact.
Summary of the invention
The technical problem to be solved in the present invention is, reduces after normal injection process finishes or avoids the valve needle rebound and consequently spray again by simple measure.
Solved thus in a kind of device that starts described type according to this technical problem of the present invention.Of the present inventionly be used to reduce the device that oil nozzle sprays again and have a valve needle of on a housing, guiding, wherein valve needle is provided with a damping ring, be provided with a dampening chamber that loads by damping liquid in the housing the inside, damping ring is immersed in the dampening chamber when closing the closed procedure end.Wherein, between valve needle and housing, have one be used for making leaked fuel through-flow to dampening chamber freely go into flow section, be used to free current drainage cross section that damping liquid is discharged and between the inwall of damping ring and dampening chamber, have one.Damping ring is arranged on the valve needle, make the volume of dampening chamber be damping ring and close closed procedure 2 to 4 times of damping ring institute displaced volume when finishing, and the area in the current drainage cross section between damping ring and the dampening chamber is 1.5 to 3 times of the area of going into flow section between valve needle and the housing at valve needle.
By the damping of setting up with respect to the end of valve needle closing movement the speed of valve needle will being leaned against reduces also minimizing thus before or gets rid of the danger of knock-oning fully on the valve seat.Very simple at this this apparatus structure, because it only needs the change in shape of pettiness and does not need to add on constituent elements moving member.
According to an advantageous modification of the present invention, damping liquid is the fuel by the internal-combustion piston engine of spontaneous combustion work.Avoid using special damping liquid thus.
Preferably having one between valve needle and housing freely goes into flow section and is used to make leaked fuel through-flow to dampening chamber.Can be that dampening chamber is for damping liquid with very simple method thus.This is gone into flow section and can realize in the machining range of original valve needle outer surface that just exists and shell inner surface.
It is favourable being provided with a free current drainage cross section between damping ring and damping locular wall, is used to make damping liquid to discharge in this space.This current drainage cross section can be realized in the machining range of valve needle and housing equally.
Other advantage of above-mentioned measure and suitable improvement project are by other dependent claims and following by means of providing in the description of accompanying drawing to embodiment.
Description of drawings
Unique accompanying drawing illustrates one for the important internal-combustion piston engine oil nozzle parts that pass through spontaneous combustion work of the present invention with vertical cross-section.
Embodiment
Valve needle is represented with 1 and the housing of guide nozzle pin is represented with 2 in the accompanying drawings.Housing 2 is positioned on the frame 3.
Valve needle 1 has a circular damping ring 4, and it can immerse dampening chamber 5.Dampening chamber 5 constitutes by an expander of housing 2 the insides.Be used to make refluxing chamber 6 to be connected to fuel tank above the unshowned reflow pipe in frame 3 the insides is positioned at dampening chamber 5, the diameter of refluxing chamber is greater than the diameter of dampening chamber 5.
The design external diameter of valve needle 1 and the internal diameter of housing 2 make that obtaining one between these parts freely goes into flow section 7 and be used to make as the leaked fuel of damping liquid through-flow to dampening chamber 5.The internal diameter of the external diameter of mutual so definite damping ring 4 and dampening chamber 5 makes that obtaining an annular row flow section 8 between these two parts when damping ring is immersed in dampening chamber 5 the insides is used for making damping liquid to discharge from dampening chamber 5 in addition.Entering dampening chamber 5 by damping ring 4 determines the damping zero hour and determines damping intensity by the size in current drainage cross section 8.Be arranged on like this on the valve needle 1 at this damping ring 4, the 2-4 of displaced volume doubly when the volume that makes dampening chamber 5 was damping ring 4 immersion dampening chamber 5.The area in this effluent stream cross section 8 is about 1.5-3 times into flow section 7.For the reason of processing aspect, going into flow section 7 and current drainage cross section 8 is that annular is to suit.But these cross sections also can recessed these parts the insides, flute profile ground.
Claims (3)
1. one kind is used to reduce the device that oil nozzle sprays again, has a valve needle of on a housing, guiding, wherein said valve needle (1) is provided with a damping ring (4), be provided with a dampening chamber (5) that loads by damping liquid in housing (2) the inside, described damping ring (4) is immersed in the dampening chamber when closing the closed procedure end
It is characterized in that, between valve needle (1) and housing (2), have one be used for making leaked fuel through-flow to dampening chamber (5) freely go into flow section (7), be used to free current drainage cross section (8) that damping liquid is discharged and between the inwall of damping ring (4) and dampening chamber (5), have one;
Described damping ring (4) is arranged on the valve needle (1), make the volume of dampening chamber (5) be damping ring (4) and close closed procedure 2 to 4 times of damping ring (4) institute displaced volume when finishing, and the area in the current drainage cross section (8) between described damping ring (4) and the dampening chamber (5) is 1.5 to 3 times of the area of going into flow section (7) between valve needle (1) and the housing (2) at valve needle (1).
2. device as claimed in claim 1 is characterized in that, described damping liquid is the fuel by the internal-combustion piston engine of spontaneous combustion work.
3. device as claimed in claim 1 or 2 is characterized in that, describedly goes into flow section and current drainage cross section (7,8) are annular.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10318255.1 | 2003-04-23 | ||
| DE10318255A DE10318255A1 (en) | 2003-04-23 | 2003-04-23 | Device for reducing the injection of an injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1550661A CN1550661A (en) | 2004-12-01 |
| CN100396908C true CN100396908C (en) | 2008-06-25 |
Family
ID=32946398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100350938A Expired - Fee Related CN100396908C (en) | 2003-04-23 | 2004-04-23 | Device for damping the closing of an injector needle of a fuel injector |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1471249B1 (en) |
| JP (1) | JP4447367B2 (en) |
| KR (1) | KR101274432B1 (en) |
| CN (1) | CN100396908C (en) |
| AT (1) | ATE319004T1 (en) |
| DE (2) | DE10318255A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5019137B2 (en) | 2009-09-04 | 2012-09-05 | 株式会社デンソー | Electromagnetically driven valve and fuel injection device using the same |
| KR101268512B1 (en) * | 2011-10-26 | 2013-06-04 | 현대중공업 주식회사 | Fuel injection nozzle of diesel engine |
| CN103321808B (en) * | 2013-07-08 | 2015-09-16 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | A kind of Novel oil spray nozzle needle valve coupler |
| US9879645B2 (en) | 2016-02-18 | 2018-01-30 | Caterpillar Inc. | Control valve bounce limiting mechanism for fuel injectors |
| CN106194537A (en) * | 2016-07-12 | 2016-12-07 | 江西汇尔油泵油嘴有限公司 | A kind of damp type fuel injecting method and damp type atomizer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3246916A1 (en) * | 1982-12-18 | 1984-06-20 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| DE3410476A1 (en) * | 1983-08-13 | 1985-02-21 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection nozzle for internal combustion engines |
| US4911366A (en) * | 1988-05-16 | 1990-03-27 | Steyr-Daimler-Puch Ag | Fuel injection valve for air-compressing internal combustion engines with fuel injection |
| CN2200058Y (en) * | 1994-01-26 | 1995-06-07 | 天津大学 | Electric control high voltage injector for diesel engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10059425A1 (en) * | 2000-11-30 | 2002-06-06 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engines, in particular diesel engines |
| DE10256948A1 (en) * | 2002-12-05 | 2004-06-24 | Robert Bosch Gmbh | Fuel injector |
-
2003
- 2003-04-23 DE DE10318255A patent/DE10318255A1/en not_active Ceased
-
2004
- 2004-03-24 KR KR1020040019965A patent/KR101274432B1/en active IP Right Grant
- 2004-04-14 AT AT04008827T patent/ATE319004T1/en not_active IP Right Cessation
- 2004-04-14 DE DE502004000312T patent/DE502004000312D1/en not_active Expired - Lifetime
- 2004-04-14 EP EP04008827A patent/EP1471249B1/en not_active Expired - Lifetime
- 2004-04-21 JP JP2004125372A patent/JP4447367B2/en not_active Expired - Fee Related
- 2004-04-23 CN CNB2004100350938A patent/CN100396908C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3246916A1 (en) * | 1982-12-18 | 1984-06-20 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| DE3410476A1 (en) * | 1983-08-13 | 1985-02-21 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection nozzle for internal combustion engines |
| US4911366A (en) * | 1988-05-16 | 1990-03-27 | Steyr-Daimler-Puch Ag | Fuel injection valve for air-compressing internal combustion engines with fuel injection |
| CN2200058Y (en) * | 1994-01-26 | 1995-06-07 | 天津大学 | Electric control high voltage injector for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004324645A (en) | 2004-11-18 |
| EP1471249A1 (en) | 2004-10-27 |
| KR20040092398A (en) | 2004-11-03 |
| DE502004000312D1 (en) | 2006-04-27 |
| ATE319004T1 (en) | 2006-03-15 |
| KR101274432B1 (en) | 2013-06-17 |
| CN1550661A (en) | 2004-12-01 |
| EP1471249B1 (en) | 2006-03-01 |
| JP4447367B2 (en) | 2010-04-07 |
| DE10318255A1 (en) | 2004-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Augsburg Patentee after: MAN ENERGY SOLUTIONS SE Address before: Augsburg Patentee before: Man Diesel & Turbo SE |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: Augsburg Patentee after: MAN DIESEL SE Address before: Osborg, Germany Patentee before: Man B&W Diesel AG |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190506 Address after: Augsburg Patentee after: Man Diesel & Turbo SE Address before: Augsburg Patentee before: Man Diesel Se |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20200423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |