EP2013470A2 - Verfahren zur reduzierung von ablagerungen innerhalb eines spritzlochs einer kraftstoffeinspritzvorrichtung - Google Patents
Verfahren zur reduzierung von ablagerungen innerhalb eines spritzlochs einer kraftstoffeinspritzvorrichtungInfo
- Publication number
- EP2013470A2 EP2013470A2 EP07802846A EP07802846A EP2013470A2 EP 2013470 A2 EP2013470 A2 EP 2013470A2 EP 07802846 A EP07802846 A EP 07802846A EP 07802846 A EP07802846 A EP 07802846A EP 2013470 A2 EP2013470 A2 EP 2013470A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray hole
- nozzle needle
- hole
- injector
- spray
- 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.)
- Granted
Links
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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/007—Cleaning
- F02M65/008—Cleaning of injectors only
Definitions
- a method for reducing deposits within a spray hole of a fuel injection device is provided.
- the invention relates to a method for reducing deposits within a spray hole of a fuel injection device according to the features of the preamble of main claim 1.
- Fuel injectors for operating an internal combustion engine have generally been known for many years.
- fuel supply into the respective combustion chamber of the internal combustion engine is effected by injectors, in particular by piezoinjectors.
- injectors for different driving conditions
- ou Kunststoffi ⁇ che properties of these systems are required in order to ensure emission limits, fuel consumption minimization and longevity of the system and thus of the vehicle.
- an injector with at least one spray hole which has a device for the targeted generation of cavitation at the outlet opening of the spray hole. With the help of cavitation deposits generated during operation in areas of the outlet opening the spray hole or over the entire spray hole length ent ⁇ be removed.
- the shape of the injection port which is determined by deposits inside half of the injection port and the outlet port, but exerts influence on the Einspritzstrahlaufbe ⁇ reitung and thus deteriorating the exhaust emission at a design of the injector to a reduction of storage ⁇ conclusions and / or an interpretation of the injector on Verko- ken.
- the the present invention object underlying be ⁇ is now to provide a method which WE- a reduction of deposits without variation of the shape shalls allows an injection hole.
- An advantageous embodiment of the invention is that due to a variably adjustable injection port pressure within the injector more accurate injection quantities are possible.
- FIG. 1 shows a schematic sketch of a nozzle unit (corresponds to a section of an injector) with two Spritzlö ⁇ manuals and a nozzle needle,
- Figure 2 a fuel volume flow path through a spray hole depending on the needle stroke.
- Figure 1 shows a schematic diagram of a nozzle unit with two spray holes and a nozzle needle. Shown is a nozzle body housing 5, within which, for example, two spray holes 1 are located. The injection holes 1 connect a blind hole 6 with a combustion chamber (not shown in the drawing). About them, a predetermined amount of fuel, depending on the adjustable spray hole inlet pressure, from the blind hole 6 flow into the combustion chamber. Furthermore, a nozzle needle 2 is shown, which influenced by their variably adjustable vertical position of the opening cross section of which is provided between SI ⁇ sen redesigngeophuse 5 and the nozzle needle 2 ⁇ throttle gap. 4
- Seat throttling occurs when the nozzle needle 2 is driven in relation to a maximum stroke such that the truncated cone-like design surface, which is determined virtually by the distance between the nozzle needle and the nozzle body housing, is able to dress ⁇ ner than the outlet cross sectional area of the spray hole 1 or the sum of the outlet cross-sectional areas of several injection holes 1.
- the frustoconical surface between the Dü ⁇ sennadel 2 and the nozzle body housing 5 in this case has perpendicular to the nozzle needle 2 and extends axially symmetrically about the vertical axis.
- FIG. 2 shows a fuel volume flow profile through a spray hole as a function of the needle stroke.
- FIG. 2 shows the volume flow in the vertical direction and the needle stroke in the horizontal direction.
- the volume flow characteristic curve 1 increases with rising ⁇ the needle stroke to the point Hl at which the needle stroke and thus the throttle gap are maximum.
- the fuel volume flow characteristic curve 1 has an increasing characteristic curve with an increasing needle stroke with simultaneously falling volumetric flow gradients.
- Seat throttling is present in the area of low needle strokes with simultaneously high volumetric flow gradients, while, on the other hand, with increasing needle stroke and thus falling volume flow gradient, a transition to a hole throttling takes place.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006040394 | 2006-08-29 | ||
| PCT/EP2007/058794 WO2008025728A2 (de) | 2006-08-29 | 2007-08-24 | Verfahren zur reduzierung von ablagerungen innerhalb eines spritzlochs einer kraftstoffeinspritzvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2013470A2 true EP2013470A2 (de) | 2009-01-14 |
| EP2013470B1 EP2013470B1 (de) | 2010-10-06 |
Family
ID=38984571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07802846A Not-in-force EP2013470B1 (de) | 2006-08-29 | 2007-08-24 | Verfahren zur reduzierung von ablagerungen innerhalb eines spritzlochs einer kraftstoffeinspritzvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2013470B1 (de) |
| AT (1) | ATE483908T1 (de) |
| DE (1) | DE502007005272D1 (de) |
| WO (1) | WO2008025728A2 (de) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009009796B3 (de) * | 2009-02-20 | 2010-10-07 | L'orange Gmbh | Verfahren zur Diagnose und/oder Steuerung von Brennkraftmaschinen, insbesondere Diesel-Brennkraftmaschinen |
| RU2416442C1 (ru) * | 2010-05-14 | 2011-04-20 | Олег Савельевич Кочетов | Форсунка кочетова |
| RU2522069C1 (ru) * | 2013-03-19 | 2014-07-10 | Олег Савельевич Кочетов | Устройство для тепловлажностной обработки воздуха |
| JP6115513B2 (ja) * | 2014-04-23 | 2017-04-19 | 株式会社デンソー | デポジット検出装置及び燃料噴射制御装置 |
| RU2600901C1 (ru) * | 2015-09-25 | 2016-10-27 | Олег Савельевич Кочетов | Форсунка кочетова для распыливания жидкостей |
| RU2646714C1 (ru) * | 2016-10-17 | 2018-03-06 | Олег Савельевич Кочетов | Акустическая форсунка кочетова |
| RU2631292C1 (ru) * | 2016-10-17 | 2017-09-20 | Олег Савельевич Кочетов | Пневматическая форсунка кочетова |
| RU2646191C1 (ru) * | 2016-10-17 | 2018-03-01 | Олег Савельевич Кочетов | Комплексная форсунка кочетова |
| RU2631282C1 (ru) * | 2016-11-11 | 2017-09-20 | Олег Савельевич Кочетов | Комплексная форсунка |
| RU2631284C1 (ru) * | 2016-11-11 | 2017-09-20 | Олег Савельевич Кочетов | Комбинированная форсунка |
| RU2631286C1 (ru) * | 2016-11-11 | 2017-09-20 | Олег Савельевич Кочетов | Акустическая форсунка |
| RU2647101C1 (ru) * | 2017-03-24 | 2018-03-13 | Олег Савельевич Кочетов | Форсунка для распыливания жидкостей с коаксиальными диффузорными распылителями |
| RU2652002C1 (ru) * | 2017-04-27 | 2018-04-24 | Олег Савельевич Кочетов | Пневматическая форсунка с двухфазным потоком распыляемой жидкости |
| RU2648056C1 (ru) * | 2017-04-27 | 2018-03-22 | Олег Савельевич Кочетов | Комбинированная форсунка для распыливания жидкостей |
| RU2651224C1 (ru) * | 2017-04-27 | 2018-04-18 | Олег Савельевич Кочетов | Форсунка пневматическая |
| RU2656449C1 (ru) * | 2017-09-21 | 2018-06-05 | Олег Савельевич Кочетов | Акустическая форсунка |
| RU2658026C1 (ru) * | 2017-09-21 | 2018-06-19 | Олег Савельевич Кочетов | Комбинированная форсунка |
| RU2658027C1 (ru) * | 2017-09-21 | 2018-06-19 | Олег Савельевич Кочетов | Пневматическая форсунка |
| RU2668904C1 (ru) * | 2018-02-13 | 2018-10-04 | Олег Савельевич Кочетов | Форсунка пневматическая |
| RU2668032C1 (ru) * | 2018-02-13 | 2018-09-25 | Олег Савельевич Кочетов | Форсунка вихревая |
| RU2670323C1 (ru) * | 2018-02-13 | 2018-10-22 | Олег Савельевич Кочетов | Пневматическая форсунка с двухфазным потоком распыляемой жидкости |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2709917A1 (de) * | 1977-03-08 | 1978-09-14 | Bosch Gmbh Robert | Kraftstoffeinspritzduese |
| DE2746010C2 (de) * | 1977-10-13 | 1985-02-14 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Kraftstoffeinspritzdüse für Brennkraftmaschinen |
| DE3303470A1 (de) * | 1983-02-02 | 1984-08-02 | Jaroslavskij savod diselnoj apparatury, Jaroslavl | Einspritzduese fuer verbrennungsmotore |
| US5853124A (en) * | 1997-05-05 | 1998-12-29 | Servojet Products International | Bottom seated pintle nozzle |
| DE10213011B4 (de) * | 2002-03-22 | 2014-02-27 | Daimler Ag | Selbstzündende Brennkraftmaschine |
| DE10225683A1 (de) * | 2002-06-10 | 2004-01-08 | Siemens Ag | Injektor zum Einspritzen von Kraftstoff |
-
2007
- 2007-08-24 WO PCT/EP2007/058794 patent/WO2008025728A2/de not_active Ceased
- 2007-08-24 EP EP07802846A patent/EP2013470B1/de not_active Not-in-force
- 2007-08-24 AT AT07802846T patent/ATE483908T1/de active
- 2007-08-24 DE DE502007005272T patent/DE502007005272D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008025728A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502007005272D1 (de) | 2010-11-18 |
| EP2013470B1 (de) | 2010-10-06 |
| ATE483908T1 (de) | 2010-10-15 |
| WO2008025728A3 (de) | 2008-04-10 |
| WO2008025728A2 (de) | 2008-03-06 |
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