EP1688611A2 - Injecteur de carburant à commande de pointeau directe pour un moteur à combustion interne - Google Patents
Injecteur de carburant à commande de pointeau directe pour un moteur à combustion interne Download PDFInfo
- Publication number
- EP1688611A2 EP1688611A2 EP05112500A EP05112500A EP1688611A2 EP 1688611 A2 EP1688611 A2 EP 1688611A2 EP 05112500 A EP05112500 A EP 05112500A EP 05112500 A EP05112500 A EP 05112500A EP 1688611 A2 EP1688611 A2 EP 1688611A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- side pressure
- nozzle needle
- piston
- actuator
- space
- 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 description 30
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0059—Arrangements of valve actuators
- F02M63/0061—Single actuator acting on two or more 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
- 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
- F02M2200/70—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
-
- 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
- F02M2200/704—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with actuator and actuated element moving in different directions, e.g. in opposite directions
-
- 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
- F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion
Definitions
- Fuel injectors with a so-called direct needle control are known. Such fuel injectors come without an intermediate control valve between an electrically actuated actuator and a nozzle needle. The power transmission between the actuator and the nozzle needle is realized by means of a pressure booster device.
- piezoelectric actuators are suitable as actuators, which, depending on the energization in the closed state, have a direct or inverse control. In a direct control of the piezoelectric actuator is energized to open the nozzle needle, so that a linear expansion of the piezoelectric actuator realized by an oppressive movement opening of the injectors, which is amplified by the pressure booster device. In the closed state, the piezoelectric actuator has a smaller linear expansion.
- the actuator In order to be able to open the injectors directly in fuel injectors with direct needle control by means of the actuator, the actuator must overcome a high opening force.
- the required opening force to be applied by the actuator is due to the fact that the nozzle needle is pressed into its seat with system pressure (pressure level in high-pressure accumulator).
- the forces required to open the nozzle needle from its seat can be up to 400 Newton.
- the nozzle needle In order to ensure sufficient fuel flow in fully opened injectors injection into the combustion chamber of a self-igniting internal combustion engine, it is also required that the nozzle needle performs a maximum stroke of several 100 microns.
- Figure 1 shows a schematic representation of a fuel injector according to the invention in longitudinal section.
- the actuator receiving space 18 merges into a receiving space 22 for a pressure booster 30.
- the pressure booster 30 has an actuator-side pressure booster piston 31, a nozzle needle side pressure booster piston 32, a coupler space 33, a control piston 34, a guide sleeve 35, an inner rear space 36 and an outer rear space 37.
- the actuator-side pressure booster piston 31 and the nozzle needle-side pressure booster piston 32 are guided in the guide sleeve 35.
- a piston spring 38 is arranged, which presses a formed on the guide sleeve 35 sealing surface 39 against an opening formed on the nozzle needle guide 12 face 23.
- the piston spring 38 also biases the actuator-side pressure booster piston 31 against the piezo-actuator 20.
- a closing spring 25 which presses the nozzle needle 14 in the closing direction, engages on the nozzle needle 14.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005004738A DE102005004738A1 (de) | 2005-02-02 | 2005-02-02 | Kraftstoffinjektor mit direkter Nadelsteuerung für eine Brennkraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1688611A2 true EP1688611A2 (fr) | 2006-08-09 |
EP1688611A3 EP1688611A3 (fr) | 2007-01-10 |
EP1688611B1 EP1688611B1 (fr) | 2008-07-30 |
Family
ID=36182388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05112500A Ceased EP1688611B1 (fr) | 2005-02-02 | 2005-12-20 | Injecteur de carburant à commande de pointeau directe pour un moteur à combustion interne |
Country Status (4)
Country | Link |
---|---|
US (1) | US7419103B2 (fr) |
EP (1) | EP1688611B1 (fr) |
AT (1) | ATE403082T1 (fr) |
DE (2) | DE102005004738A1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326259A1 (de) * | 2003-06-11 | 2005-01-05 | Robert Bosch Gmbh | Injektor für Kraftstoff-Einspritzsysteme von Brennkraftmaschinen, insbesondere von direkteinspritzenden Dieselmotoren |
DE10352736A1 (de) * | 2003-11-12 | 2005-07-07 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Nadeleinspritzung |
DE102005012929A1 (de) * | 2005-03-21 | 2006-09-28 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Steuerung des Einspritzventilglieds und variabler Übersetzung |
DE102005016796A1 (de) * | 2005-04-12 | 2006-10-19 | Robert Bosch Gmbh | Zweistufig öffnender Kraftstoffinjektor |
DE102005025953A1 (de) * | 2005-06-06 | 2006-12-07 | Siemens Ag | Einspritzventil und Ausgleichselement für ein Einspritzventil |
DE102005036444A1 (de) * | 2005-08-03 | 2007-02-08 | Robert Bosch Gmbh | Einspritzdüse |
DE102006008648A1 (de) * | 2006-02-24 | 2007-08-30 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine |
US8074625B2 (en) | 2008-01-07 | 2011-12-13 | Mcalister Technologies, Llc | Fuel injector actuator assemblies and associated methods of use and manufacture |
DE102008008847A1 (de) | 2008-02-13 | 2009-08-27 | Robert Bosch Gmbh | Kraftstoffinjektor mit einer direkt gesteuerten Ventilnadel |
DE102008032133B4 (de) * | 2008-07-08 | 2015-08-20 | Continental Automotive Gmbh | Kraftstoffeinspritzvorrichtung |
DE102009024595A1 (de) * | 2009-06-10 | 2011-03-24 | Continental Automotive Gmbh | Einspritzventil mit Übertragungseinheit |
DE102009024596A1 (de) | 2009-06-10 | 2011-04-07 | Continental Automotive Gmbh | Einspritzventil mit Übertragungseinheit |
DE102012212264B4 (de) | 2012-07-13 | 2014-02-13 | Continental Automotive Gmbh | Verfahren zum Herstellen eines Festkörperaktuators |
DE102012212266B4 (de) * | 2012-07-13 | 2015-01-22 | Continental Automotive Gmbh | Fluidinjektor |
US9309846B2 (en) | 2012-11-12 | 2016-04-12 | Mcalister Technologies, Llc | Motion modifiers for fuel injection systems |
US20140131466A1 (en) | 2012-11-12 | 2014-05-15 | Advanced Green Innovations, LLC | Hydraulic displacement amplifiers for fuel injectors |
WO2014144807A1 (fr) * | 2012-11-12 | 2014-09-18 | Mcalister Technologies, Llc | Systèmes et procédés permettant une compensation et une amplification de mouvement par déplacement de fluide |
DE102013219225A1 (de) * | 2013-09-25 | 2015-03-26 | Continental Automotive Gmbh | Piezo-Injektor zur Kraftstoff-Direkteinspritzung |
DE102014211334B3 (de) * | 2014-06-13 | 2015-08-27 | Continental Automotive Gmbh | Verfahren zur Charakterisierung eines hydraulischen Koppelelementes eines Piezo-Injektors |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326046A1 (de) | 2003-06-10 | 2004-12-30 | Robert Bosch Gmbh | Einspritzdüse für Brennkraftmaschinen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4784102A (en) * | 1984-12-25 | 1988-11-15 | Nippon Soken, Inc. | Fuel injector and fuel injection system |
DE19712921A1 (de) * | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil mit piezoelektrischem oder magnetostriktivem Aktor |
GB9925753D0 (en) * | 1999-10-29 | 1999-12-29 | Lucas Industries Ltd | Fuel injector |
ATE353118T1 (de) * | 2000-07-18 | 2007-02-15 | Delphi Tech Inc | Kraftstoffeinspritzventil |
US6766965B2 (en) * | 2001-08-31 | 2004-07-27 | Siemens Automotive Corporation | Twin tube hydraulic compensator for a fuel injector |
DE10347769B3 (de) * | 2003-10-14 | 2005-01-13 | Siemens Ag | Stellgerät |
-
2005
- 2005-02-02 DE DE102005004738A patent/DE102005004738A1/de not_active Withdrawn
- 2005-12-20 AT AT05112500T patent/ATE403082T1/de not_active IP Right Cessation
- 2005-12-20 DE DE502005004874T patent/DE502005004874D1/de active Active
- 2005-12-20 EP EP05112500A patent/EP1688611B1/fr not_active Ceased
-
2006
- 2006-02-01 US US11/344,099 patent/US7419103B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10326046A1 (de) | 2003-06-10 | 2004-12-30 | Robert Bosch Gmbh | Einspritzdüse für Brennkraftmaschinen |
Also Published As
Publication number | Publication date |
---|---|
DE502005004874D1 (de) | 2008-09-11 |
US7419103B2 (en) | 2008-09-02 |
DE102005004738A1 (de) | 2006-08-10 |
EP1688611B1 (fr) | 2008-07-30 |
ATE403082T1 (de) | 2008-08-15 |
EP1688611A3 (fr) | 2007-01-10 |
US20060169802A1 (en) | 2006-08-03 |
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