CN105247201A - Fuel injection nozzle - Google Patents
Fuel injection nozzle Download PDFInfo
- Publication number
- CN105247201A CN105247201A CN201480032170.6A CN201480032170A CN105247201A CN 105247201 A CN105247201 A CN 105247201A CN 201480032170 A CN201480032170 A CN 201480032170A CN 105247201 A CN105247201 A CN 105247201A
- Authority
- CN
- China
- Prior art keywords
- profile
- valve needle
- section
- described valve
- nozzle body
- 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.)
- Pending
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
- F02M61/188—Spherical or partly spherical shaped valve member ends
-
- 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
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
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
Fuel injection nozzle of an internal combustion engine, comprising a nozzle body (11) and a nozzle needle (12) located in said nozzle body (11), the nozzle body (11) providing a valve seat (13) for the nozzle needle (12) that serves as the valve body, such that, when the fuel injection nozzle is closed, a region (15) of the nozzle needle (12) pushes against the valve seat (13) provided by the nozzle body (11). The valve seat (13) provided by the nozzle body (11) has a conical contour and the region (15) of the nozzle needle (12) which pushes against the valve seat (13) provided by the nozzle body (11) when the fuel injection valve is closed is provided by a spherically contoured section (17) of the nozzle needle (12).
Description
Invention field
The present invention relates to a kind of fuel nozzle as described in the preamble according to claim 1.
Background technique
Fuel nozzle is fully known by putting into practice.So, fuel nozzle (it also can be embodied as fuel injector) has nozzle body and is arranged in the valve needle (D ü sennadel) of nozzle body.Nozzle body is that the valve needle being used as valve body (Ventilk rper) provides valve seat (Ventilsitz).When fuel nozzle cuts out, a region of valve needle presses to the valve seat provided by nozzle body.When fuel nozzle is opened, this region of valve needle is lifted from the valve seat of nozzle body.
By putting into practice in known fuel nozzle, the valve seat not only provided by nozzle body but also press to the corresponding tapered profile in region of valve needle of valve seat of nozzle body when fuel nozzle cuts out, that is there is different cone angles.
By putting into practice in known fuel nozzle, must valve needle intricately be centered in nozzle body, to avoid the deflection of valve needle in nozzle body and so to guarantee seal action good between nozzle body and valve needle when fuel nozzle cuts out.In addition, by putting into practice in known fuel nozzle, the face of the tapered profile of nozzle body and valve needle must be manufactured with high surface quality, produce high manufacture thus and expend.
Summary of the invention
Set out thus, the object of the invention is to provide a kind of novel fuel nozzle.This object is realized by one fuel nozzle according to claim 1.According to the present invention, when fuel nozzle cuts out, the region pressing to the valve seat provided by nozzle body of valve needle is provided by the section of the globulate profile of valve needle.In fuel nozzle according to the present invention, the not tapered profile in the region that the valve seat of the tapered profile provided by nozzle body is provided when fuel nozzle cuts out of valve needle, but provided by the section of the globulate profile of valve needle.Multiple advantage can be realized relative to known fuel nozzle with this.So can abandon the centering of the complexity of valve needle in nozzle body, even if because the good seal action between valve needle and nozzle body also can be guaranteed when fuel nozzle cuts out when valve needle is tilting in nozzle body.Therefore the coefficient surface expending manufacture valve needle and nozzle body that can also be less.In addition can reduce and variance and the variance therefore in the emitted dose provided by fuel nozzle are provided.
According to favourable improvement project of the present invention, the section of the globulate profile of valve needle is on nozzle body valve seat and be therefore transited into the section of the one-tenth aspherical profile of valve needle at the side place back to spray orifice of nozzle body, wherein, the fulcrum of the section extending through on the one hand the globulate profile of valve needle on the valve seat of tapered profile and extend through on the other hand and surround with the valve seat of the straight line of the transition point between the section of aspherical profile and tapered profile that becomes of the adjacent of valve needle the angle being less than 10 ° at the section of the globulate profile of valve needle.To this, the section of the globulate profile of valve needle is embodied as ball intercept (Kugelabschnitt) or spherical crown (Kugelkalotte) or is embodied as layers of balls (Kugelschicht) or ball dish (kugelscheibe).
According to another favourable improvement project of the present invention, the section of the globulate profile of valve needle is under the valve seat of nozzle body and be therefore transited into the section of the other one-tenth aspherical profile of valve needle at the side place towards spray orifice of nozzle body, wherein, the fulcrum of the section extending through on the one hand the globulate profile of valve needle on the valve seat of tapered profile and extend through on the other hand and surround with the other valve seat of the straight line of the transition point between the section of aspherical profile and tapered profile that becomes of the adjacent of valve needle the angle being less than 10 ° at the section of the globulate profile of valve needle.To this, the section of the globulate profile of valve needle is embodied as layers of balls or ball dish.
Utilize above-mentioned improvement project of the present invention can realize especially simply according to advantage of the present invention.
accompanying drawing is sketched
Preferred improvement project of the present invention is drawn by dependent claims and ensuing explanation.Elaborate embodiments of the invention with reference to the accompanying drawings, and be not limited thereto.Wherein:
Fig. 1 shows the cross section through fuel nozzle according to the present invention,
Fig. 2 shows the intercept in the valve needle of fuel nozzle;
Fig. 3 shows the details III of the amplification of Fig. 1;
Fig. 4 shows the details IV again amplified of Fig. 3; And
Fig. 5 shows according to the intercept in the alternative valve needle of fuel nozzle of the present invention.
Embodiment
The present invention relates to a kind of for internal-combustion engine, the fuel nozzle being particularly useful for marine diesel engine.Fuel nozzle can be fuel injector.
Fig. 1 illustrates the cross section through fuel nozzle 10 according to the present invention, and wherein, fuel nozzle 10 has nozzle body 11 and is arranged in the valve needle 12 of nozzle body 11.Nozzle body 11 provides valve seat 13 for being used as the valve needle 12 of valve body, and wherein, when fuel nozzle 10 cuts out, the region 15 of valve needle 12 is pressed to the valve seat 13 provided by nozzle body 11 by elastic element 14.When fuel nozzle 10 cuts out, valve needle 12 presses to its region 15 valve seat 13 provided by nozzle body 11, so not by so-called spray orifice 16 burner oil of nozzle body 11.Only when valve needle 12 lifts from the valve seat 13 of nozzle body 11 with its region 15, so could via spray orifice 16 burner oil.
The valve seat 13 provided by nozzle body 11 tapered profile as is common in the prior art.
According to the present invention, the region 15 pressing to the valve seat 13 of the tapered profile provided by nozzle body 11 when fuel nozzle 10 cuts out of valve needle 12 is provided by the section 17 of the globulate profile of valve needle 12.
In the embodiment of Fig. 1-4, the section 17 of this globulate profile of valve needle 12 is configured to layers of balls, and wherein, such layers of balls also can be called as ball dish, and it is limited by the cross section that two extend parallel to each other through ball.If the section 17 of the globulate profile of valve needle 12 is embodied as layers of balls or ball dish, so therefore the section 17 of the globulate profile of valve needle 12 to be transitioned at the side place back to spray orifice 16 of nozzle body 11 in the section 18 of the one-tenth aspherical profile of valve needle 12 under this external valve seat 13 and to be therefore transitioned in the section 19 of other one-tenth aspherical profile of valve needle 12 at the side place towards spray orifice 16 of nozzle body 11 on valve seat 13.
In the embodiment of Fig. 1-4, the section 18 one-tenth cylindrical outline of one-tenth aspherical profile back to spray orifice 16 of valve needle 12 and the section 19 one-tenth taper-like profile of the other one-tenth aspherical profile towards spray orifice 16 of valve needle 12.
When fuel nozzle 10 cuts out, the region 15 of the valve seat 13 pressing to nozzle body 11 of valve needle 12 is correspondingly provided by the section 17 of the globulate profile of valve needle 12, wherein, in figs. 3 and 4 valve needle 12 shown in broken lines in this region that reclines at valve seat 13 place of nozzle body 11.
If the section 17 of the globulate profile of valve needle 12 is embodied as layers of balls or ball dish as Figure 1-4, the section 17 so extending through on the one hand the globulate profile of valve needle 12 according to Fig. 4 extends through on the other hand to the fulcrum 21 on the valve seat 13 of tapered profile and surrounds with the valve seat 13 of tapered profile the angle 1 being less than 10 ° with the straight line 20 of the transition point 22 between the section 18 of aspherical profile that becomes back to spray orifice 16 of the adjacent of valve needle 12 at the section 17 of the globulate profile of valve needle 12.
Equally, if the section 17 of the globulate profile of valve needle 12 is provided by layers of balls or ball dish, the fulcrum 21 of the section 17 extending through the globulate profile of valve needle 12 so on the one hand on the valve seat 13 of tapered profile and the straight line 23 that extends through the transition point 24 between the section 19 of the other one-tenth aspherical profile towards spray orifice 16 of the section 17 of the globulate profile of valve needle 12 and the adjacent of valve needle 12 on the other hand surrounds the same angle 2 being less than 10 ° with the valve seat 13 of tapered profile.
Angle 1 can be different from each other or identical with 2.
Be different from the embodiment of Fig. 1-4, also possible that, the section 17 according to the globulate profile of Fig. 5 valve needle 12 is provided by ball intercept, and wherein, such ball intercept is also referred to as spherical crown.When the section 17 of the globulate profile according to Fig. 5 valve needle 12 is provided by ball intercept or spherical crown, so its be only transitioned at the side place of the spray orifice 16 back to nozzle body 11 the one-tenth aspherical profile of valve needle 12 section 18, especially become in the section 18 of cylindrical profile, wherein, the valve needle 12 that so valve needle 12 is similar to Fig. 1-4 in this transition region constructs or becomes profile.
Utilize the present invention can realize many advantages.So, allow to geometrical construction or the profile of the section 17 simply manufacturing the valve needle 12 proposed, such as, by the radius of a ball of the section 17 of the globulate profile of polishing valve needle 12.Even if valve needle by hard material, as by the steel hardened or pottery to manufacture time, so this also may.
In addition, in section 17, the spheric profile of valve needle 12 makes valve needle 12 can simply feel relieved in nozzle body 11.Even if when valve needle 12 is tilting due to the non-precision centering of valve seat 13 relative to nozzle body 11, so still guarantee seal action good in the region of valve seat 13.
Via the spheric profile pressing to the section 17 of the valve seat 13 of nozzle body 11 when fuel nozzle cuts out of valve needle 12, can reduce and manufacture variance and therefore via the emitted dose variance of fuel nozzle.
In addition, caused by the spheric profile of the section 17 with the coefficient valve needle 12 of the valve seat 13 of nozzle body 11, so not easy to wear according to fuel nozzle 10 of the present invention.If valve needle 12 clashes into valve seat 13 to nozzle body 11 with the section 17 of globulate profile when fuel nozzle 10 cuts out, so with by putting into practice compared with known nozzle on the valve seat 13 of nozzle body 11, provide larger supporting surface for valve needle 12.Thus, reduce for valve seat 13 and for section 17 load of the globulate profile with the coefficient valve needle 12 of valve seat 13.Impinge upon by valve needle 12 wearing and tearing that valve seat 13 causes to reduce, fuel nozzle 10 according to the present invention has higher durability and working life therefore thus.In addition, the spray characteristic of fuel nozzle 10 can be improved on service life.
The section 17 of the globulate profile of valve needle 12 is configured to ball intercept or spherical crown or is configured to layers of balls or ball dish is preferred.Alternatively, also a ball can be attached to valve needle 12 and sentence the section 17 being provided as spheric profile.
List of numerals
10 fuel nozzles
11 nozzle bodies
12 valve needles
13 valve seats
14 elastic elements
15 regions
16 spray orifices
The section of 17 globulate profiles
The section of 18 one-tenth aspherical profiles
The section of 19 one-tenth aspherical profiles
20 straight lines
21 fulcrums
22 transition points
23 straight lines
24 transition points.
Claims (5)
1. the fuel nozzle of an internal-combustion engine, it has nozzle body (11) and is positioned at the valve needle (12) in described nozzle body (11), wherein, described nozzle body (11) is that the described valve needle (12) being used as valve body provides valve seat (13) like this, the region (15) of the described valve needle (12) when fuel nozzle cuts out is made to press to the described valve seat (13) provided by described nozzle body (11), wherein, described valve seat (13) the tapered profile provided by described nozzle body (11), it is characterized in that, the region (15) pressing to the described valve needle (12) of the described valve seat (13) provided by described nozzle body (11) when fuel nozzle cuts out is provided by the section (17) of the globulate profile of described valve needle (12).
2. fuel nozzle according to claim 1, it is characterized in that, the section (17) of the globulate profile of described valve needle (12) is on the valve seat (13) of described nozzle body (11) and be therefore transitioned in the section (18) of the one-tenth aspherical profile of described valve needle (12) at the side place back to spray orifice (16) of described nozzle body (12), wherein, the fulcrum (21) of the section (17) extending through on the one hand the globulate profile of described valve needle (12) on the described valve seat (13) of tapered profile and extend through on the other hand and surround with the become straight line (20) of the transition point (22) between the section of aspherical profile (18) and the described valve seat (13) of tapered profile of the adjacent of described valve needle (12) angle (1) being less than 10 ° at the section (17) of the globulate profile of described valve needle (12).
3. fuel nozzle according to claim 1 and 2, is characterized in that, the section (17) of the globulate profile of described valve needle (12) is ball intercept.
4. fuel nozzle according to claim 1 and 2, is characterized in that, the section (17) of the globulate profile of described valve needle (12) is layers of balls.
5. fuel nozzle according to claim 4, it is characterized in that, the section (17) of the globulate profile of described valve needle (12) is under the valve seat (13) of described nozzle body (11) and be therefore transitioned in the section (19) of other one-tenth aspherical profile of described valve needle (12) at the side place towards spray orifice (16) of described nozzle body (11), wherein, the fulcrum (21) of the section (17) extending through on the one hand the globulate profile of described valve needle (12) on the described valve seat (13) of tapered profile and extend through on the other hand and surround with other the become straight line (23) of the transition point (24) between the section of aspherical profile (19) and the described valve seat (13) of tapered profile of the adjacent of described valve needle (12) angle (2) being less than 10 ° at the section (17) of the globulate profile of described valve needle (12).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013009418.6 | 2013-06-05 | ||
| DE102013009418.6A DE102013009418A1 (en) | 2013-06-05 | 2013-06-05 | fuel Injector |
| PCT/EP2014/061676 WO2014195399A1 (en) | 2013-06-05 | 2014-06-05 | Fuel injection nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105247201A true CN105247201A (en) | 2016-01-13 |
Family
ID=50884411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480032170.6A Pending CN105247201A (en) | 2013-06-05 | 2014-06-05 | Fuel injection nozzle |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3004624A1 (en) |
| JP (1) | JP2016521818A (en) |
| KR (1) | KR20160011667A (en) |
| CN (1) | CN105247201A (en) |
| DE (1) | DE102013009418A1 (en) |
| WO (1) | WO2014195399A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1757803A1 (en) * | 2005-08-24 | 2007-02-28 | Delphi Technologies, Inc. | Injection nozzle |
| JP2010059898A (en) * | 2008-09-05 | 2010-03-18 | Hitachi Automotive Systems Ltd | Fuel injection valve and method of joining two components |
| US20110042491A1 (en) * | 2008-08-29 | 2011-02-24 | Hitachi Automotive Systems, Ltd. | Fuel Injection Valve |
| EP2461014A1 (en) * | 2010-12-06 | 2012-06-06 | OMT Officine Meccaniche Torino S.p.A. | Nozzle with long service life for high-pressure mechanical injectors operating with heavy fuel |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19547423B4 (en) * | 1995-12-19 | 2008-09-18 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| EP0961025A1 (en) * | 1998-05-29 | 1999-12-01 | Wärtsilä NSD Schweiz AG | Fuel injection nozzle |
| JP3777259B2 (en) * | 1998-09-24 | 2006-05-24 | 株式会社ケーヒン | Electromagnetic fuel injection valve |
| WO2000065225A1 (en) * | 1999-04-27 | 2000-11-02 | Siemens Automotive Corporation | Method of manufacturing a fuel injector seat |
| DE10031265A1 (en) * | 2000-06-27 | 2002-01-10 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
| JP4030529B2 (en) * | 2004-06-21 | 2008-01-09 | 株式会社ケーヒン | Fuel injection valve |
| DE102004053352A1 (en) * | 2004-11-04 | 2006-05-18 | Siemens Ag | Valve for injecting fuel |
| DE102011007887A1 (en) * | 2011-04-21 | 2012-10-25 | Continental Automotive Gmbh | Nozzle assembly for an injection valve and injection valve |
| DE102011080695A1 (en) * | 2011-08-09 | 2013-02-14 | Robert Bosch Gmbh | Fluid measuring valve for combustion engine, has valve portion and valve seat whose geometry is adapted to each other so that volume of gap formed outside of sealing portion at position between valve and seat portions is minimized |
-
2013
- 2013-06-05 DE DE102013009418.6A patent/DE102013009418A1/en active Pending
-
2014
- 2014-06-05 EP EP14727850.1A patent/EP3004624A1/en not_active Ceased
- 2014-06-05 CN CN201480032170.6A patent/CN105247201A/en active Pending
- 2014-06-05 KR KR1020157036435A patent/KR20160011667A/en active Search and Examination
- 2014-06-05 WO PCT/EP2014/061676 patent/WO2014195399A1/en active Application Filing
- 2014-06-05 JP JP2016517598A patent/JP2016521818A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1757803A1 (en) * | 2005-08-24 | 2007-02-28 | Delphi Technologies, Inc. | Injection nozzle |
| US20110042491A1 (en) * | 2008-08-29 | 2011-02-24 | Hitachi Automotive Systems, Ltd. | Fuel Injection Valve |
| JP2010059898A (en) * | 2008-09-05 | 2010-03-18 | Hitachi Automotive Systems Ltd | Fuel injection valve and method of joining two components |
| US20110042490A1 (en) * | 2008-09-05 | 2011-02-24 | Hitachi Automotive Systems, Ltd. | Fuel Injection Valve and Method for Coupling Two Components Together |
| EP2461014A1 (en) * | 2010-12-06 | 2012-06-06 | OMT Officine Meccaniche Torino S.p.A. | Nozzle with long service life for high-pressure mechanical injectors operating with heavy fuel |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160011667A (en) | 2016-02-01 |
| JP2016521818A (en) | 2016-07-25 |
| WO2014195399A1 (en) | 2014-12-11 |
| DE102013009418A1 (en) | 2014-12-24 |
| EP3004624A1 (en) | 2016-04-13 |
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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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Augsburg Applicant after: Mann Energy Solutions Ltd. Address before: Augsburg Applicant before: Man Diesel & Turbo SE |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160113 |