EP1825134A1 - Kraftstoffeinspritzdüse - Google Patents
KraftstoffeinspritzdüseInfo
- Publication number
- EP1825134A1 EP1825134A1 EP05815589A EP05815589A EP1825134A1 EP 1825134 A1 EP1825134 A1 EP 1825134A1 EP 05815589 A EP05815589 A EP 05815589A EP 05815589 A EP05815589 A EP 05815589A EP 1825134 A1 EP1825134 A1 EP 1825134A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- piston
- fuel
- opening direction
- needle
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 39
- 238000002347 injection Methods 0.000 title claims abstract description 27
- 239000007924 injection Substances 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 15
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
-
- 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
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/505—Adjusting spring tension by sliding spring seats
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
Definitions
- the invention is based on a fuel injection nozzle according to the preamble of patent claim 1.
- Such, for example, from DE 100 58 153 A1 known fuel injector for internal combustion engines has two nozzle needles that can be controlled independently.
- the outer nozzle needle is opened when the force exerted by the fuel on a pressure shoulder of the outer nozzle needle opening force is greater than the action of a closing spring.
- the inner nozzle needle is opened by the pressure of a force acting in the closing direction on the nozzle needle hydraulic fluid is lowered in a control chamber.
- the fuel injector according to the invention for internal combustion engines with the characterizing features of claim 1 has the advantage that the fuel injector is easy and directly controlled.
- the separate structure of the control via separate control chambers of the two nozzle needles is particularly advantageous.
- FIGURE shows the fuel injection nozzle according to the invention in a longitudinal section.
- the fuel injector 1 for internal combustion engines shown in Fig. 1 has a one-piece or multi-piece, cylindrical nozzle body 2, which projects with its free lower end into a combustion chamber not shown in detail of the engine to be supplied.
- a guide bore 3 of the nozzle body 2 designed as a hollow needle outer nozzle needle 4 is axially displaceably guided, in which an inner nozzle needle 5 is arranged coaxially and also guided axially displaceable.
- annular space 6 is formed, which is bounded by the outer nozzle needle 4 radially inwardly.
- a high-pressure fuel line 7 is the Annulus 6 connected to a fuel high-pressure accumulator, not shown (common rail).
- a first closing spring 8 presses the outer nozzle needle 4 into a first sealing seat 9 at the combustion chamber end of the guide bore 3.
- a sealing cone 10 of the outer nozzle needle 4 in conjunction with the first sealing seat 9, that fuel from the annular space. 6 passes through first injection holes 11 in the combustion chamber of the internal combustion engine.
- a second closing spring 12 presses the inner nozzle needle 5 into a second sealing seat 13 at the combustion chamber end of the guide bore 3.
- the two sealing seats 9, 13 are formed by a common conical surface.
- the closing springs 8, 12 of the two nozzle needles 4, 5 are supported on a piston 17, which is guided axially displaceably in a translator piston 18 open at the bottom.
- the piezoelectric actuator 19 is energized, whereby the booster piston 18 is pressed down against the action of a tension spring (e.g., Bourdon tube) 20.
- the piston 17 is hydraulically coupled to the booster piston 18 via a booster chamber 21, which is filled with fuel under rail pressure, to enable a 1: 1 temperature compensation of the actuator 19.
- the two nozzle needle 4, 5 are guided in each case displaceably on the piston 17.
- the piston 17 has a downwardly open piston chamber, at the chamber wall, the two nozzle needles 4, 5 are guided.
- the piston 17 engages with an annular first projection 22, the outer nozzle needle 4 and with an annular second projection 23, the inner nozzle needle 5 in each case Opening direction.
- the outer nozzle needle 4 is in the opening direction on the first projection 22, while the inner nozzle needle 5 is spaced apart in the opening direction of the second projection 23 by hi.
- the outer nozzle needles 4 delimited by a control surface acting in the closing direction 24 in the piston chamber, a first nozzle rear chamber 25 which is connected via a first throttle 26 with a first control chamber 27.
- the first control chamber 27 is radially inwardly by the piston 17, radially outwardly by a sealing sleeve 28, in the opening direction by the piston 17 and in
- the inner nozzle needle 5 delimits, with a control surface 30 acting in the closing direction, in the piston chamber a second nozzle rear space 31, which is connected via a second throttle 32 to a second control chamber 33.
- the second control chamber 33 is bounded radially inwardly by the piston 17, radially outward by a sealing sleeve 34, in the opening direction by the booster piston 18 and in the closing direction by the nozzle body 2.
- the sealing sleeve 34 which is supported by a housing side supported compression spring 35 in abutment against a shoulder of the nozzle body 2, the second control chamber 33 is throttled connected to the high-pressure fuel line 7.
- the piston 17 After a preliminary stroke hi the piston 17 also takes over the second projection 23 and the inner nozzle needle 5 in the opening direction.
- the inner nozzle needle 5 lifts off from its sealing seat 13, and fuel from the annular space 6 is also injected via the now released second injection holes 16 in the combustion chamber. Since the rail pressure in the opening direction also acts on the sealing cone 14 of the inner nozzle needle 5, the inner nozzle needle 5 lifts off from the second projection 23 and is opened up against the action of the closing spring 12.
- the two nozzle needles 4, 5 are opened wide with only minimal opening stroke of the actuator 19.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410057246 DE102004057246A1 (de) | 2004-11-26 | 2004-11-26 | Kraftstoffeinspritzdüse |
PCT/EP2005/055656 WO2006056522A1 (de) | 2004-11-26 | 2005-10-31 | Kraftstoffeinspritzdüse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1825134A1 true EP1825134A1 (de) | 2007-08-29 |
EP1825134B1 EP1825134B1 (de) | 2009-12-16 |
Family
ID=35809575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05815589A Expired - Fee Related EP1825134B1 (de) | 2004-11-26 | 2005-10-31 | Kraftstoffeinspritzdüse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1825134B1 (de) |
JP (1) | JP2008522069A (de) |
DE (2) | DE102004057246A1 (de) |
WO (1) | WO2006056522A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006017034B4 (de) * | 2006-04-11 | 2008-01-24 | Siemens Ag | Piezo-Aktor, Verfahren zum Herstellen eines Piezo-Aktors und Einspritzsystem mit einem solchen |
FR2906848B1 (fr) * | 2006-10-09 | 2012-04-20 | Renault Sas | Dispositif de maintien d'une aiguille d'un injecteur de carburant, et injecteur de carburant associe |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9914642D0 (en) * | 1999-06-24 | 1999-08-25 | Lucas Ind Plc | Fuel injector |
DE10058153A1 (de) * | 2000-11-22 | 2002-06-06 | Bosch Gmbh Robert | Einspritzdüse mit separat steuerbaren Düsennadeln |
DE10348925A1 (de) * | 2003-10-18 | 2005-05-12 | Bosch Gmbh Robert | Kraftstoffinjektor mit mehrteiligem, direktgesteuertem Einspritzventilglied |
DE102004010183A1 (de) * | 2004-03-02 | 2005-09-29 | Siemens Ag | Einspritzventil |
-
2004
- 2004-11-26 DE DE200410057246 patent/DE102004057246A1/de not_active Withdrawn
-
2005
- 2005-10-31 EP EP05815589A patent/EP1825134B1/de not_active Expired - Fee Related
- 2005-10-31 JP JP2007541904A patent/JP2008522069A/ja active Pending
- 2005-10-31 WO PCT/EP2005/055656 patent/WO2006056522A1/de active Application Filing
- 2005-10-31 DE DE502005008728T patent/DE502005008728D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006056522A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502005008728D1 (de) | 2010-01-28 |
EP1825134B1 (de) | 2009-12-16 |
JP2008522069A (ja) | 2008-06-26 |
DE102004057246A1 (de) | 2006-06-01 |
WO2006056522A1 (de) | 2006-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1636484B1 (de) | Einspritzdüse für brennkraftmaschinen | |
EP2183476B1 (de) | Kraftstoffeinspritzventil mit verbesserter dichtheit am dichtsitz eines druckausgeglichenen steuerventils | |
EP1831539B1 (de) | Kraftstoffinjektor mit direkter steuerung des einspritzventilgliedes | |
EP1387939B1 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
EP1853813B1 (de) | Einspritzdüse | |
DE19946827C1 (de) | Ventil zum Steuern von Flüssigkeiten | |
WO2007000371A1 (de) | Injektor mit zuschaltbarem druckübersetzer | |
WO2004046540A1 (de) | Injektor mit einer direkt angetriebenen register-düsennadel für die kraftstoffeinspritzung in einen verbrennungsmotor | |
EP1682769B1 (de) | Kraftstoffinjektor mit mehrteiligem, direktgesteuertem einspritzventilglied | |
EP1872008B1 (de) | Zweistufig öffnender kraftstoffinjektor | |
EP1825134B1 (de) | Kraftstoffeinspritzdüse | |
EP1825137B1 (de) | Kraftstoffeinspritzdüse | |
EP1838960B1 (de) | Kraftstoffeinspritzdüse | |
DE10050599B4 (de) | Einspritzventil mit einem Pumpkolben | |
EP1662131B1 (de) | Kraftstoffeinspritzdüse | |
DE10122389A1 (de) | Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen | |
DE102005041667B4 (de) | Injektor mit direkter Nadelsteuerung | |
EP2133552B1 (de) | Kraftstoffinjektor | |
DE102014211469A1 (de) | Düsenbaugruppe für einen Kraftstoffinjektor sowie Kraftstoffinjektor | |
WO2010097284A1 (de) | Kraftstoffinjektor | |
DE102007018042A1 (de) | Injektor mit mehrteiligem Ventilelement | |
WO2018153596A1 (de) | Brennstoffeinspritzventil zum einspritzen eines gasförmigen und/oder flüssigen brennstoffs | |
DE10314011A1 (de) | Einpritzventil | |
DE10309078A1 (de) | Kraftstoffeinspritzventil für eine Brennkraftmaschine | |
WO2004111430A1 (de) | Einspritzdüse für brennkraftmaschinen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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: 20070626 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
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 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 502005008728 Country of ref document: DE Date of ref document: 20100128 Kind code of ref document: P |
|
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 |
|
26N | No opposition filed |
Effective date: 20100917 |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20091216 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20101031 |
|
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: 20101031 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20171206 Year of fee payment: 13 Ref country code: FR Payment date: 20171023 Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005008728 Country of ref document: DE |
|
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: 20190501 |
|
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: 20181031 |