EP2405127A1 - A fuel injector for internal combustion engines - Google Patents
A fuel injector for internal combustion engines Download PDFInfo
- Publication number
- EP2405127A1 EP2405127A1 EP10168684A EP10168684A EP2405127A1 EP 2405127 A1 EP2405127 A1 EP 2405127A1 EP 10168684 A EP10168684 A EP 10168684A EP 10168684 A EP10168684 A EP 10168684A EP 2405127 A1 EP2405127 A1 EP 2405127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cut
- longitudinal bore
- fuel injector
- sealing portion
- inlet openings
- 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
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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided with fuel passages
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
Definitions
- the present invention relates to a fuel injector for internal combustion engines.
- the invention relates in particular to a fuel injector for large two-stroke internal combustion engines, such as diesel engines for naval propulsion.
- the present invention relates to a fuel injector according to the preamble of claim 1, comprising an atomizer fixed at a lower end of a valve guide and provided with a plurality of nozzle bores, a spindle having a valve portion cooperating with a valve seat of the valve guide, and a cut-off element extending into a longitudinal bore of the atomizer to reduce the volume in fluid connection with the nozzle bores when the spindle is in a closed position.
- EP-A-052937 discloses a fuel injector comprising an axially displaceable spindle having a valve portion which cooperates with a corresponding valve seat of the valve guide and a cut-off element extending below the valve portion of the valve spindle into a central bore of the atomizer.
- the outer wall of the cut-off element is effective to open and close inlet openings of the nozzle bores.
- the nozzle bores are arranged in a single row, i.e. the inlet openings of the nozzle bores are all placed at approximately the same distance from the lower end of the atomizer.
- a problem of this solution is that the total number of nozzle bores arranged within a maximum angle cannot be increased without compromising the strength of the side wall of the atomizer.
- W02008/071187 discloses a fuel injector according to the preamble of claim 1, wherein the inlet openings of the nozzle bores of the atomizer are arranged in a first row and in a second row axially spaced apart and separated from each other by a cylindrical sealing portion.
- a cut-off element extending into a longitudinal bore of the atomizer has a first cylindrical section arranged to open and close the lower row of inlet openings and a second cylindrical section cooperating with a secondary valve seat for closing off the upper row of inlet openings when the valve spindle is closed.
- the lower row of inlet openings is supplied by fuel flowing through a central duct of the cut-off element and the upper row of inlet openings is supplied by fuel flowing in an annular passage defined between the inner wall of the atomizer bore and the outer surface of the cut-off element.
- the object of the present invention is to provide improved injector designs which overcome the problems caused by the fluid dynamic forces which act on the cut-off element.
- the reference number 10 indicates the lower portion of an atomizer for a fuel injector for diesel engines.
- the atomizer 10 consists of a cylindrical body of corrosion-resistant material with a closed rounded bottom end 12.
- the atomizer 10 has a longitudinal bore 14 closed at its bottom end and having a longitudinal axis A.
- a plurality of nozzle bores 16 is formed in the lateral wall of the atomizer 10.
- the nozzle bores 16 have respective inner openings 18 facing into the longitudinal bore 14 and outlet openings 20 open on the outer surface of the atomizer.
- the inlet openings 18 of the nozzle bores 16 are divided into an upper group and a lower group, spaced apart from each other in the longitudinal direction A.
- the injector includes a spindle (not visible in figure 1 ) having a cut-off element 22 which extends into the longitudinal bore 14 of the atomizer 10.
- the cut-off element 22 is movable in the longitudinal direction A with respect to the longitudinal bore 14 between an open and a closed position.
- the longitudinal bore 14 has an upper an a lower cylindrical sealing portion 24, 26.
- the upper sealing portion 24 is above the upper group of inner openings 18 and the lower sealing portion 26 is below the lower group of inner openings 18.
- the cut-off element 22 has a cylindrical upper sealing portion 28 and a cylindrical lower sealing portion 30. In the closed position the upper and lower sealing portions 28, 30 of the cut-off element 22 are in sealing contact respectively with the upper and lower sealing portions 24, 26 of the longitudinal bore 14 and define an upper cut-off section 32 and a lower cut-off section 34.
- the cut-off element has a central duct 36 which in the closed position of the cut-off element 22 is in flow connection with the longitudinal bore 14 both above the upper cut-off section 32 and below the lower cut-off section 34.
- the cut-off element 22 is provided with a supplementary guiding section 38 extending below the upper sealing portion 28 of the cut-off element 22.
- the supplementary guiding section 38 is in guiding contact with the upper sealing portion 24 of the longitudinal bore 14.
- the supplementary guiding section 38 includes a plurality of guiding ribs 40 spaced apart from each other in a circumferential direction and having outer cylindrical surfaces in sliding contact with the upper sealing portion 24. Channels 42 are formed between adjacent guiding ribs 40. The channels 42 allow passage of a flow of fuel through the upper cut-off section 32 in the open position of the cut-off element 22.
- Figure 2 shows an alternative embodiment wherein the lower sealing portion 30 of the cut-off element 22 extends below the lower group of inner openings both in the closed and in the open position of the cut-off element 22.
- the cut off element is guided on the lower sealing portion 30, below the lower group of inner openings 18.
- manufacturing of the cut-off element 22 is simplified because drilling of relatively big holes on the cut off element 22 is avoided and only small holes might be required just to balance pressures on the end face of the cut-off element. No holes bigger than 35% of the diameter of the cut-off element 22 are formed. In this way the cut-off element 22 is subjected to much smaller stresses than in prior art designs thus increasing the reliability of the component. This design also provides a very high sac volume reduction.
- Figures 3 and 4 show a further solution for closing the injection holes with nearly zero sac volume and without any radial forces caused by the fluid flow dynamic, which can lead to friction between the nozzle wall and valve body.
- the cut-off element is designed as a pipe and a spherical element 44, such as a ball, is positioned on the bottom end of the longitudinal bore 14. In the closed position the bottom end of the cut-off element 22 abuts on the spherical element 44 and closes the main flow on the sealing surface of the spherical element 44.
- an elastic disc 46 is provided at the upper end of the longitudinal bore 14.
- a spindle 48 is provided with a conical sealing portion 50 above the cut-off element 22. The sealing area between the conical sealing portion 50 and the disc 46 is closed at the same time as the bottom end of the cut-off element 22 contacts the spherical element 44.
- figures 2 , 3 and 4 may have the same guiding portion 38 as disclosed with reference to figure 1 .
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
- an atomizer (10) having a longitudinal bore (14) and a plurality of nozzle bores (16) having inlet openings (18) facing into said longitudinal bore (14), said inlet openings (18) being divided into an upper group and a lower group, spaced apart from each other in a longitudinal direction (A), and
- a cut-off element (22) extending into said longitudinal bore (14) of the atomizer (10), the cut-off element (22) being movable in said longitudinal direction (A) between an open and a closed position,
wherein the longitudinal bore (14) and the cut-off element (22) have respective upper and lower sealing portions (24, 28, 26, 30) cooperating with each other in said closed position of the cut-off element (22) to define an upper and a lower cut-off section (32, 34) which extend, respectively, above the upper group of inlet openings (18) and below the lower group of inlet openings (18).
Description
- The present invention relates to a fuel injector for internal combustion engines. The invention relates in particular to a fuel injector for large two-stroke internal combustion engines, such as diesel engines for naval propulsion.
- More specifically, the present invention relates to a fuel injector according to the preamble of claim 1, comprising an atomizer fixed at a lower end of a valve guide and provided with a plurality of nozzle bores, a spindle having a valve portion cooperating with a valve seat of the valve guide, and a cut-off element extending into a longitudinal bore of the atomizer to reduce the volume in fluid connection with the nozzle bores when the spindle is in a closed position.
-
EP-A-052937 - In the solution disclosed in
EP-A-052937 -
W02008/071187 discloses a fuel injector according to the preamble of claim 1, wherein the inlet openings of the nozzle bores of the atomizer are arranged in a first row and in a second row axially spaced apart and separated from each other by a cylindrical sealing portion. A cut-off element extending into a longitudinal bore of the atomizer has a first cylindrical section arranged to open and close the lower row of inlet openings and a second cylindrical section cooperating with a secondary valve seat for closing off the upper row of inlet openings when the valve spindle is closed. - When the valve spindle is open, the lower row of inlet openings is supplied by fuel flowing through a central duct of the cut-off element and the upper row of inlet openings is supplied by fuel flowing in an annular passage defined between the inner wall of the atomizer bore and the outer surface of the cut-off element.
- A problem of the solution disclosed in
W02008/071187 is that in the open position of spindle the cut-off element is not completely guided. Thus, during the closing phase of the spindle, when the cut-off element is moving downwards, there is the possibility that an edge of the cut-off element hits against the atomiser wall. This is caused by the fluid dynamic forces which act on the cut-off element at the height of the injection holes. These forces push the cut-off element towards the injection holes and can even bend the cut-off element. - The object of the present invention is to provide improved injector designs which overcome the problems caused by the fluid dynamic forces which act on the cut-off element.
- In accordance with the present invention, this object is achieved by fuel injectors having the features defined in claim 1.
- Further characteristics and advantages of the present invention will become clear in the course of the detailed description which follows, given purely by way of non-limiting example, with reference to the annexed drawings, wherein:
-
figure 1 is a partial axial cross-section of an atomizer according to a first embodiment of the present invention, -
figures 2 is a partial cross-section of a second embodiment, and -
figure 3 and4 are partial cross-sections of a third embodiment, respectively in an open and in a closed position. - Referring to
figure 1 , thereference number 10 indicates the lower portion of an atomizer for a fuel injector for diesel engines. - In the following description and in the claims the terms "upper", "lower", "top", "bottom" and the like refer to the normal position of use of the injector. It is however envisaged that the
injector 10 could be mounted in a more or less inclined position with respect to a vertical axis. - The
atomizer 10 consists of a cylindrical body of corrosion-resistant material with a closedrounded bottom end 12. - The
atomizer 10 has alongitudinal bore 14 closed at its bottom end and having a longitudinal axis A. A plurality ofnozzle bores 16 is formed in the lateral wall of theatomizer 10. Thenozzle bores 16 have respectiveinner openings 18 facing into thelongitudinal bore 14 andoutlet openings 20 open on the outer surface of the atomizer. Theinlet openings 18 of thenozzle bores 16 are divided into an upper group and a lower group, spaced apart from each other in the longitudinal direction A. - The injector includes a spindle (not visible in
figure 1 ) having a cut-offelement 22 which extends into thelongitudinal bore 14 of theatomizer 10. - The cut-off
element 22 is movable in the longitudinal direction A with respect to thelongitudinal bore 14 between an open and a closed position. - The
longitudinal bore 14 has an upper an a lowercylindrical sealing portion upper sealing portion 24 is above the upper group ofinner openings 18 and thelower sealing portion 26 is below the lower group ofinner openings 18. - The cut-off
element 22 has a cylindricalupper sealing portion 28 and a cylindricallower sealing portion 30. In the closed position the upper andlower sealing portions element 22 are in sealing contact respectively with the upper andlower sealing portions longitudinal bore 14 and define an upper cut-offsection 32 and a lower cut-offsection 34. - In the open position shown in
figure 1 the upper andlower sealing portions element 22 are axially offset with respect to the upper andlower sealing portions longitudinal bore 14. In this position the upper and lower cut-offsections lower sealing portion 30 of the cut-offelement 22 is positioned between the upper and lower groups ofinner openings 18. - The cut-off element has a
central duct 36 which in the closed position of the cut-offelement 22 is in flow connection with thelongitudinal bore 14 both above the upper cut-offsection 32 and below the lower cut-offsection 34. - The cut-off
element 22 is provided with a supplementary guidingsection 38 extending below theupper sealing portion 28 of the cut-offelement 22. The supplementary guidingsection 38 is in guiding contact with theupper sealing portion 24 of thelongitudinal bore 14. - The supplementary guiding
section 38 includes a plurality of guidingribs 40 spaced apart from each other in a circumferential direction and having outer cylindrical surfaces in sliding contact with theupper sealing portion 24.Channels 42 are formed between adjacent guidingribs 40. Thechannels 42 allow passage of a flow of fuel through the upper cut-offsection 32 in the open position of the cut-offelement 22. - In the open position of the cut-off element, fuel under pressure is admitted in the annular channel defined between the inner surface of the
longitudinal bore 14 and the outer surface of the cut-offelement 22. A first fuel flow passes through thechannels 42 and reaches the upper group ofinner openings 18. A second fuel flow passes into theaxial duct 36 of the cut-offelement 14 and reaches the lower group ofinner openings 18. In the open position the guidingribs 40 are in contact with theupper sealing portion 24 of theatomiser 10. The guidingribs 40 eliminate the risk of impact between the cut-off element and the inner wall of the atomizer due to fluid dynamic forces acting on the cut-offelement 22. The clearance between the cut offelement 22 andlongitudinal bore 14 can be kept at a minimum thus reducing the leakage of fuel. -
Figure 2 shows an alternative embodiment wherein thelower sealing portion 30 of the cut-offelement 22 extends below the lower group of inner openings both in the closed and in the open position of the cut-offelement 22. - In the open position shown in
figure 2 the whole fuel flow runs downwards through theupper sealing section 32 towards the upper and lower groups ofinner openings 18. All theinjection holes 16 are supplied by the fuel which flows outside the cut-offelement 22. In this way the fluid pressure drop is limited because no big flow restrictions or change in flow directions are necessary. - In order to avoid disturbing the fuel flow which supply the injection holes, the cut off element is guided on the
lower sealing portion 30, below the lower group ofinner openings 18. - In the embodiment of
figure 2 manufacturing of the cut-offelement 22 is simplified because drilling of relatively big holes on the cut offelement 22 is avoided and only small holes might be required just to balance pressures on the end face of the cut-off element. No holes bigger than 35% of the diameter of the cut-offelement 22 are formed. In this way the cut-offelement 22 is subjected to much smaller stresses than in prior art designs thus increasing the reliability of the component. This design also provides a very high sac volume reduction. -
Figures 3 and4 show a further solution for closing the injection holes with nearly zero sac volume and without any radial forces caused by the fluid flow dynamic, which can lead to friction between the nozzle wall and valve body. - The cut-off element is designed as a pipe and a
spherical element 44, such as a ball, is positioned on the bottom end of thelongitudinal bore 14. In the closed position the bottom end of the cut-offelement 22 abuts on thespherical element 44 and closes the main flow on the sealing surface of thespherical element 44. - In order to cut also the leakage into the cylinder through the gap between the
longitudinal bore 14 and the cut-offelement 22 anelastic disc 46 is provided at the upper end of thelongitudinal bore 14. Aspindle 48 is provided with aconical sealing portion 50 above the cut-offelement 22. The sealing area between theconical sealing portion 50 and thedisc 46 is closed at the same time as the bottom end of the cut-offelement 22 contacts thespherical element 44. - Although not shown in the figures, the embodiments of
figures 2 ,3 and4 may have the same guidingportion 38 as disclosed with reference tofigure 1 .
Claims (7)
- A fuel injector for internal combustion engines, comprising:- an atomizer (10) having a longitudinal bore (14) and a plurality of nozzle bores (16) having inlet openings (18) facing into said longitudinal bore (14), said inlet openings (18) being divided into an upper group and a lower group, spaced apart from each other in a longitudinal direction (A), and- a cut-off element (22) extending into said longitudinal bore (14) of the atomizer (10), the cut-off element (22) being movable in said longitudinal direction (A) with respect to the longitudinal bore (14) between an open and a closed position,the longitudinal bore (14) and the cut-off element (22) having respective upper and lower sealing portions (24, 28, 26, 30) cooperating with each other in said closed position of the cut-off element (22) to define an upper and a lower cut-off section (32, 34) which extend, respectively, above the upper group of inlet openings (18) and below the lower group of inlet openings (18),
characterized in that the cut-off element (22) is provided with a supplementary guiding section (38) which is in guiding contact with the upper sealing portion (24) of the longitudinal bore (14) and allows passage of a fuel flow therethrough in the open position of the cut-off element (22). - A fuel injector according to claim 1, characterized in that the supplementary guiding section (38) includes a plurality of guiding ribs (40) having cylindrical outer surfaces in sliding contact with said cylindrical upper sealing portion (24) of the longitudinal bore (14) in said open position of the cut-off element (22).
- A fuel injector according to claim 2, characterized in that said guiding ribs (40) are circumferentially spaced apart from each other by channels (42) for the passage of said fuel flow.
- A fuel injector according to claim 1, characterised in that the lower sealing portion (30) of the cut-off element (22) in said open position of the cut-off element (22) extends between the upper and the lower group of inner openings (18).
- A fuel injector according to claim 1, characterised in that the lower sealing portion (30) of the cut-off element (22) in said open position of the cut-off element (22) extends below the lower group of inner openings (18) .
- A fuel injector according to claim 1, characterized in that the cut-off element (22) has a bottom end which in said closed position abuts in sealing contact against a spherical element (44).
- A fuel injector according to claim 6, characterized in that a deformable disc (46) is provided at an upper end of the longitudinal bore (14) and a conical sealing portion (50) is provided at an upper end of the cut-off element (22), said conical sealing portion (50) abutting against said deformable disc (46) in the closed position of the cut-off element (22).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10168684A EP2405127B1 (en) | 2010-07-07 | 2010-07-07 | A fuel injector for internal combustion engines |
DK10168684.8T DK2405127T3 (en) | 2010-07-07 | 2010-07-07 | Fuel injection device for internal combustion engines |
KR1020110016811A KR20120004911A (en) | 2010-07-07 | 2011-02-25 | A fuel injector for internal combustion engines |
JP2011039839A JP5822254B2 (en) | 2010-07-07 | 2011-02-25 | Fuel injector for internal combustion engines |
CN201110189157.XA CN102312763B (en) | 2010-07-07 | 2011-07-07 | The fuel injector of explosive motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10168684A EP2405127B1 (en) | 2010-07-07 | 2010-07-07 | A fuel injector for internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2405127A1 true EP2405127A1 (en) | 2012-01-11 |
EP2405127B1 EP2405127B1 (en) | 2013-04-03 |
Family
ID=42935560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10168684A Not-in-force EP2405127B1 (en) | 2010-07-07 | 2010-07-07 | A fuel injector for internal combustion engines |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2405127B1 (en) |
JP (1) | JP5822254B2 (en) |
KR (1) | KR20120004911A (en) |
CN (1) | CN102312763B (en) |
DK (1) | DK2405127T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2428672A3 (en) * | 2010-09-08 | 2013-03-06 | Robert Bosch GmbH | Fuel injector |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5955258B2 (en) * | 2013-03-29 | 2016-07-20 | 三菱重工業株式会社 | Fuel injection device and diesel engine |
DE102017122117A1 (en) * | 2017-09-25 | 2019-03-28 | Man Diesel & Turbo Se | Injector for a dual-fuel engine and dual-fuel engine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0052937A1 (en) | 1980-11-20 | 1982-06-02 | B & W DIESEL A/S | A fuel injector for internal combustion engines |
WO1987006650A1 (en) * | 1986-04-25 | 1987-11-05 | Voest-Alpine Automotive Gesellschaft M.B.H. | Injection nozzle for internal combustion engines |
EP1063416A2 (en) * | 1999-06-25 | 2000-12-27 | Delphi Technologies, Inc. | Fuel injector |
EP1445476A1 (en) * | 2003-02-04 | 2004-08-11 | Siemens VDO Automotive S.p.A. | Valve needle and metering device comprising same |
FR2890122A3 (en) * | 2005-08-25 | 2007-03-02 | Renault Sas | Internal combustion engine`s e.g. diesel engine, fuel injector for motor vehicle, has guiding units contacting with cylinder, where contacts are respectively arranged on circles of planes perpendicular to longitudinal axis of cylinder |
DE102006033878A1 (en) * | 2006-07-21 | 2008-01-31 | Siemens Ag | Nozzle assembly for injecting valve, has nozzle body and needle arranged to release fluid flow to row of injecting holes only by needle in cooperation with wall of recess downstream to passage in position range of needle |
WO2008071187A1 (en) | 2006-12-15 | 2008-06-19 | Man Diesel A/S | A fuel injector for an internal combustion engine |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62170769A (en) * | 1986-01-23 | 1987-07-27 | Osamu Matsumura | Fuel injection valve |
JPS6217363A (en) * | 1985-07-15 | 1987-01-26 | Osamu Matsumura | Fuel injector |
JP3560174B2 (en) * | 1994-05-17 | 2004-09-02 | 株式会社デンソー | Fluid injection nozzle and fuel injection valve using the same |
JPH08144896A (en) * | 1994-11-25 | 1996-06-04 | Zexel Corp | Variable nozzle hole type fuel injection nozzle |
ES2178702T3 (en) * | 1995-03-29 | 2003-01-01 | Bosch Gmbh Robert | PERFORATED DISC, IN SPECIAL FOR INJECTION VALVE. |
WO1999014487A1 (en) * | 1997-09-16 | 1999-03-25 | Robert Bosch Gmbh | Perforated disk or atomizing disk and an injection valve with a perforated disk or atomizing disk |
JPH11193766A (en) * | 1997-12-26 | 1999-07-21 | Denso Corp | Fuel injection valve |
JPH11351103A (en) * | 1998-06-13 | 1999-12-21 | Toyota Central Res & Dev Lab Inc | Fuel injection valve |
JP2001099033A (en) * | 1999-09-30 | 2001-04-10 | Denso Corp | Fuel injection valve |
DE10134868A1 (en) * | 2001-07-18 | 2003-02-13 | Bosch Gmbh Robert | Fuel injector with closing pressure compensation |
DE102005009148A1 (en) * | 2005-03-01 | 2006-09-07 | Robert Bosch Gmbh | Fuel injector with direct-acting injection valve member with double seat |
JP2007231852A (en) * | 2006-03-01 | 2007-09-13 | Toyota Motor Corp | Fuel injection device |
JP4483836B2 (en) * | 2006-08-07 | 2010-06-16 | 株式会社デンソー | Fuel injection nozzle |
JP2008231996A (en) * | 2007-03-20 | 2008-10-02 | Toyota Motor Corp | Control device of internal combustion engine |
JP2008274792A (en) * | 2007-04-26 | 2008-11-13 | Denso Corp | Fluid injection nozzle |
JP2009121402A (en) * | 2007-11-16 | 2009-06-04 | Toyota Motor Corp | Adjustable injection hole nozzle type fuel injection valve |
-
2010
- 2010-07-07 EP EP10168684A patent/EP2405127B1/en not_active Not-in-force
- 2010-07-07 DK DK10168684.8T patent/DK2405127T3/en active
-
2011
- 2011-02-25 KR KR1020110016811A patent/KR20120004911A/en active IP Right Grant
- 2011-02-25 JP JP2011039839A patent/JP5822254B2/en not_active Expired - Fee Related
- 2011-07-07 CN CN201110189157.XA patent/CN102312763B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0052937A1 (en) | 1980-11-20 | 1982-06-02 | B & W DIESEL A/S | A fuel injector for internal combustion engines |
WO1987006650A1 (en) * | 1986-04-25 | 1987-11-05 | Voest-Alpine Automotive Gesellschaft M.B.H. | Injection nozzle for internal combustion engines |
EP1063416A2 (en) * | 1999-06-25 | 2000-12-27 | Delphi Technologies, Inc. | Fuel injector |
EP1445476A1 (en) * | 2003-02-04 | 2004-08-11 | Siemens VDO Automotive S.p.A. | Valve needle and metering device comprising same |
FR2890122A3 (en) * | 2005-08-25 | 2007-03-02 | Renault Sas | Internal combustion engine`s e.g. diesel engine, fuel injector for motor vehicle, has guiding units contacting with cylinder, where contacts are respectively arranged on circles of planes perpendicular to longitudinal axis of cylinder |
DE102006033878A1 (en) * | 2006-07-21 | 2008-01-31 | Siemens Ag | Nozzle assembly for injecting valve, has nozzle body and needle arranged to release fluid flow to row of injecting holes only by needle in cooperation with wall of recess downstream to passage in position range of needle |
WO2008071187A1 (en) | 2006-12-15 | 2008-06-19 | Man Diesel A/S | A fuel injector for an internal combustion engine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2428672A3 (en) * | 2010-09-08 | 2013-03-06 | Robert Bosch GmbH | Fuel injector |
Also Published As
Publication number | Publication date |
---|---|
CN102312763B (en) | 2017-03-01 |
DK2405127T3 (en) | 2013-04-22 |
JP2012017732A (en) | 2012-01-26 |
JP5822254B2 (en) | 2015-11-24 |
CN102312763A (en) | 2012-01-11 |
KR20120004911A (en) | 2012-01-13 |
EP2405127B1 (en) | 2013-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8919677B2 (en) | Injection nozzle | |
US6827297B2 (en) | Fuel injection valve for internal combustion engines | |
CN101578445A (en) | Injector for injecting fuel into combustion chambers of internal combustion engines | |
CN101529080B (en) | Injector for injecting fuel into combustion chambers of internal combustion engines | |
EP2405127B1 (en) | A fuel injector for internal combustion engines | |
EP2707592B1 (en) | Fuel injector | |
US11591995B2 (en) | Fuel injector having valve seat orifice plate with valve seat and drain and re-pressurization orifices | |
JP2006514210A (en) | Fuel injection valve for internal combustion engine | |
KR101759472B1 (en) | Valve assembly and injection valve | |
EP2905457B1 (en) | Valve assembly and fluid injector for a combustion engine | |
EP2354530B1 (en) | Needle for needle valve | |
EP2386745B1 (en) | A fuel injector for internal combustion engines | |
CN100402834C (en) | Fuel injection valve for internal combustion engines | |
US20220065207A1 (en) | Nozzle for a fuel injector | |
KR20160098246A (en) | Fuel injection nozzle | |
CN208918729U (en) | High pressure common rail injector for diesel engine | |
EP3103999B1 (en) | Valve assembly for an injection valve and injection valve for a combustion engine | |
EP2975257B1 (en) | Control unit to control a valve pin of a fuel injector and fuel injector | |
EP2918818A1 (en) | Fuel injector | |
EP3783220A1 (en) | Valve seat body for a fluid injector of an internal combustion engine | |
CN109715919B (en) | Dual fuel injector and nozzle assembly therefor | |
EP2698525A1 (en) | Valve needle, valve assembly and injection valve | |
EP1496246A1 (en) | Injection nozzle | |
WO2021005128A1 (en) | Fluid injector of an internal combustion engine comprising a valve seat body | |
CN111720248A (en) | Fuel injector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME RS |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20120319 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 604885 Country of ref document: AT Kind code of ref document: T Effective date: 20130415 Ref country code: CH Ref legal event code: NV Representative=s name: SULZER MANAGEMENT AG PATENTABTEILUNG/0067, CH |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602010006020 Country of ref document: DE Effective date: 20130529 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 604885 Country of ref document: AT Kind code of ref document: T Effective date: 20130403 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20130403 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130703 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130704 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130805 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130714 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130803 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130703 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: INTELLECTUAL PROPERTY SERVICES GMBH, CH |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
26N | No opposition filed |
Effective date: 20140106 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: NEW ADDRESS: LANGFELDSTRASSE 88, 8500 FRAUENFELD (CH) |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602010006020 Country of ref document: DE Effective date: 20140106 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130707 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140707 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140707 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130707 Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20100707 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20160712 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: WINTERTHUR GAS AND DIESEL AG, CH Free format text: FORMER OWNER: WAERTSILAE SWITZERLAND LTD., CH |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20170705 Year of fee payment: 8 Ref country code: CH Payment date: 20170725 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20170929 Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP Effective date: 20170731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130403 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602010006020 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190201 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180707 |