WO2004094811A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2004094811A1 WO2004094811A1 PCT/DE2004/000335 DE2004000335W WO2004094811A1 WO 2004094811 A1 WO2004094811 A1 WO 2004094811A1 DE 2004000335 W DE2004000335 W DE 2004000335W WO 2004094811 A1 WO2004094811 A1 WO 2004094811A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel injection
- injection valve
- valve
- recess
- actuator
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance 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
- F02M61/04—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
- F02M61/08—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 the valves opening in direction of fuel flow
-
- 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
- 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
- F02M61/167—Means for compensating clearance or thermal expansion
-
- 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
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
- F02M63/0057—Means for avoiding fuel contact with valve actuator, e.g. isolating actuators by using bellows or diaphragms
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- DE 35 33 085 AI discloses a metering valve for metering liquids or gases, in particular an injection valve for fuel injection systems in internal combustion engines, which has a piezo stack actuator, the change in length of which is transmitted to a valve needle controlling a metering opening when an excitation voltage is applied, and determines the stroke of the valve needle.
- the substance to be measured is fed via a feed line, which is designed in the form of a deep hole in the valve body.
- a disadvantage of the metering valve known from DE 35 33 085 AI is the lack of possibility to compensate for offsets of the valve needle, which is rigidly connected to the actuator. This can lead to malfunction of the metering valve.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that the hydraulic coupler is provided on a side facing the valve needle with a recess into which the correspondingly shaped valve needle engages.
- the recess is designed so that angular offsets can be compensated.
- valve needle is advantageously rounded and the recess is conical. With a circular line of equipment, offsets can be compensated for reliably and easily.
- Another advantage is that the arrangement can be produced in a very simple manner and does not require any additional components.
- Figure 1 is a schematic section through the downstream end of an embodiment of a fuel injector designed according to the invention.
- Fig. 2 is a partial representation of the pivotable mounting of the coupler between the actuator and
- a fuel injector 1 shown in FIG. 1 is in the form of a fuel injector 1 for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines.
- the fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine. Shown. is the downstream end of fuel injector 1.
- the fuel injection valve 1 comprises a housing 2, in which a piezoelectric or magnetostrictive actuator 4 provided with an actuator coating 3 is arranged.
- the actuator 4 is preloaded by a tubular spring 5 in order to enable a non-destructive assembly and a reproducible actuation of the actuator 4.
- An electrical voltage can be supplied to the actuator 4 by means of an electrical line 6.
- the actuator 4 is supported on the inflow side on an actuator foot, not shown, and on the outflow side on an actuator head 8.
- the actuator 4 is encapsulated in an actuator housing 9.
- the fuel fine injection valve 1 has a hydraulic coupler 10 on the downstream side of the actuator 4.
- the hydraulic coupler 10 is designed as a second medium coupler 10 and is shown as an overall component in the present exemplary embodiment for the sake of clarity.
- a hydraulic coupler 10 usually includes a master piston and a slave piston which are urged against one another by a coupler spring.
- the hydraulic coupler 10 can be, for example, by a Corrugated tube-shaped seal against an interior 7 of the fuel injector 1 to be sealed.
- the hydraulic coupler 10 rests on a valve needle 11.
- An inflow end 12 of the valve needle 11 is hemispherical in shape and lies in a recess 13 of the hydraulic coupler 10.
- the inflow end 12 of the valve needle 11 and the hydraulic coupler 10 are shown enlarged in FIG. 2 and described in detail below.
- the valve needle 11 has a valve closing body 15 on an outflow-side end 14, which cooperates with a valve seat surface 16 to form a sealing seat.
- the fuel injection valve 1 opens outward.
- the valve needle 11 is guided in a multi-part nozzle body 17 and acted upon by a return spring 18, which at the same time prestresses the actuator 4.
- the return spring 18 is arranged in the actuator housing 9.
- the actuator housing 9 is also sealed off from the interior 7 of the fuel injector 1 by a corrugated tube seal 19.
- FIG. 2 shows a section of the section of the fuel injector 1 designed according to the invention, designated II in FIG. 1.
- the inflow end 12 of the valve needle 11 is rounded.
- a curve 20 of the end 12 can be cap-shaped or hemispherical.
- the recess 13 in the hydraulic coupler 10 is conical.
- the curvature 20 lies in the recess 13 on a circular contact line 21, whereby forces can be absorbed evenly.
- the arrangement ensures in a simple and reliable manner the compensation of offsets of the valve needle 11 during operation of the fuel injector 1, which would otherwise lead to malfunctions of fuel injector 1 by jamming valve needle 11 or by destruction of actuator 4 due to shear forces in the event of offsets.
- the arrangement shown is particularly easy to manufacture. In particular, no additional components are required.
- Embodiment limited and suitable for any designs of fuel injection valves 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
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/554,270 US20070001027A1 (en) | 2003-04-24 | 2004-02-24 | Fuel injector valve |
EP04713841A EP1620644A1 (de) | 2003-04-24 | 2004-02-24 | Brennstoffeinspritzventil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10318639.5 | 2003-04-24 | ||
DE10318639A DE10318639A1 (de) | 2003-04-24 | 2003-04-24 | Brennstoffeinspritzventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004094811A1 true WO2004094811A1 (de) | 2004-11-04 |
Family
ID=33154395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000335 WO2004094811A1 (de) | 2003-04-24 | 2004-02-24 | Brennstoffeinspritzventil |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070001027A1 (de) |
EP (1) | EP1620644A1 (de) |
DE (1) | DE10318639A1 (de) |
WO (1) | WO2004094811A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101331651B (zh) * | 2006-04-14 | 2013-01-30 | 株式会社村田制作所 | 天线 |
DE202009019019U1 (de) | 2008-09-04 | 2015-07-27 | Swat Medical Ab | Faltbare temporäre Embolieschutzvorrichtung mit länglicher blutdurchlässiger Einheit |
CN103195626B (zh) * | 2013-03-26 | 2015-03-11 | 哈尔滨工程大学 | 冗余电磁与压电组合双阀装置器 |
DE102013219225A1 (de) * | 2013-09-25 | 2015-03-26 | Continental Automotive Gmbh | Piezo-Injektor zur Kraftstoff-Direkteinspritzung |
US9749131B2 (en) * | 2014-07-31 | 2017-08-29 | Nok Nok Labs, Inc. | System and method for implementing a one-time-password using asymmetric cryptography |
WO2018057036A1 (en) * | 2016-09-26 | 2018-03-29 | Ford Global Technologies, Llc | Selective ride sharing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3533085A1 (de) | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
US5931390A (en) * | 1997-01-16 | 1999-08-03 | Daimler-Benz Ag | Valve for the dosed discharge of fluids |
US6066912A (en) * | 1997-04-08 | 2000-05-23 | Siemens Aktiengesellschaft | Device for transmitting a deflection of an actuator |
WO2003018996A2 (de) * | 2001-08-17 | 2003-03-06 | Robert Bosch Gmbh | Piezoelektrisches aktormodul |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19746143A1 (de) * | 1997-10-18 | 1999-04-22 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE19839125C1 (de) * | 1998-08-27 | 2000-04-20 | Siemens Ag | Vorrichtung und Verfahren zur Dosierung von Fluid |
DE19942816A1 (de) * | 1999-09-08 | 2001-03-22 | Daimler Chrysler Ag | Einspritzventil |
GB9925753D0 (en) * | 1999-10-29 | 1999-12-29 | Lucas Industries Ltd | Fuel injector |
DE10006319A1 (de) * | 2000-02-12 | 2001-08-16 | Daimler Chrysler Ag | Einspritzventil |
DE10007735A1 (de) * | 2000-02-19 | 2001-09-06 | Daimler Chrysler Ag | Einspritzventil |
-
2003
- 2003-04-24 DE DE10318639A patent/DE10318639A1/de not_active Withdrawn
-
2004
- 2004-02-24 EP EP04713841A patent/EP1620644A1/de not_active Withdrawn
- 2004-02-24 US US10/554,270 patent/US20070001027A1/en not_active Abandoned
- 2004-02-24 WO PCT/DE2004/000335 patent/WO2004094811A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3533085A1 (de) | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
US5931390A (en) * | 1997-01-16 | 1999-08-03 | Daimler-Benz Ag | Valve for the dosed discharge of fluids |
US6066912A (en) * | 1997-04-08 | 2000-05-23 | Siemens Aktiengesellschaft | Device for transmitting a deflection of an actuator |
WO2003018996A2 (de) * | 2001-08-17 | 2003-03-06 | Robert Bosch Gmbh | Piezoelektrisches aktormodul |
Also Published As
Publication number | Publication date |
---|---|
DE10318639A1 (de) | 2004-11-11 |
US20070001027A1 (en) | 2007-01-04 |
EP1620644A1 (de) | 2006-02-01 |
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