WO2004081367A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2004081367A1 WO2004081367A1 PCT/DE2004/000098 DE2004000098W WO2004081367A1 WO 2004081367 A1 WO2004081367 A1 WO 2004081367A1 DE 2004000098 W DE2004000098 W DE 2004000098W WO 2004081367 A1 WO2004081367 A1 WO 2004081367A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel injection
- injection valve
- actuator
- valve according
- valve
- 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.)
- Ceased
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
- F02M61/167—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
- 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
- F02M61/04—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
- 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 relates to a fuel injector according to the preamble of the main claim.
- 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 when an excitation voltage is applied is transmitted to a valve needle controlling a feed opening 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 floating mounting of the hydraulic coupler between the fuel inlet and the actuator, as a result of which the coupler is exposed to fluctuations in the fuel pressure.
- the electrical lines required to make contact with the actuator have to be laid in a complex manner in order not to be stressed by the changes in position.
- the cables have to be laid around the coupler, which makes them both longer and more installation space claim. This makes the valve housing bulky and in turn requires a larger installation space in the cylinder head.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that the hydraulic coupler is fixed between the actuator and a valve group, so that the electrical contacting of the actuator does not have to take place past the actuator and length changes caused by changes in the position of the coupler are eliminated.
- the actuator is advantageously firmly connected to the valve housing, as a result of which a stationary relative position of the actuator with respect to the housing is achieved.
- the electrical lines run through bores in an actuator base and are fixed and protected by plastic encapsulation.
- the plug in which the electrical lines are arranged, is advantageously molded onto the plastic encapsulation.
- the coupler advantageously acts on the valve needle via a spherical cap, so that offsets can be compensated for.
- FIG. 1 shows a schematic section through an exemplary embodiment of a fuel injection valve according to the invention along a sectional plane
- FIG. 2 shows a schematic section through the exemplary embodiment of a fuel injector according to the invention shown in FIG. 1 along a second sectional plane
- FIGS. 1 and 2 shows a detail of the pivotable mounting of the coupler between the actuator and the valve needle of the fuel injector according to the invention shown in FIGS. 1 and 2.
- a fuel injector 1 shown in FIGS. 1 and 2 in two mutually perpendicular sectional views along a longitudinal axis is in the form of a fuel injector 1 for fuel injection systems of mixture-compressing, spark-ignited
- Fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine.
- the fuel injector 1 comprises a housing 2, in which one is provided with an actuator coating 3 piezoelectric or magnetostrictive actuator 4 is arranged.
- the actuator 4 is preloaded by a tubular spring 5 in order to enable 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 base 7 and on the outflow side on an actuator head 8.
- the actuator 4 is encapsulated in an actuator housing 9.
- the fuel injection valve 1 has a hydraulic coupler 10 on the downstream side of the actuator 4, which is mounted without pressure between the actuator 4 and a valve module 11.
- the hydraulic coupler 10 is designed as a second medium coupler 10 and comprises a master piston 12 and a slave piston 13, which are urged against one another by a coupler spring 14.
- the hydraulic coupler 10 is sealed against an interior 16 of the fuel injector 1 by a corrugated-tube seal 15, for example.
- the slave piston 13 of the hydraulic coupler 10 rests on a calotte 17 which interacts with a valve needle 19 via an actuating element 18.
- the calotte 17 compensates for offsets of the valve needle 19 during the operation of the fuel injector 1.
- the valve needle 19 has a valve closing body 20 at its downstream end, which cooperates with a valve seat surface 21 to form a sealing seat.
- the fuel injection valve 1 opens outward.
- the actuator 4 Due to the fact that the actuator 4 is not floating, but is fixedly mounted, it is possible to achieve a fixed thermal connection of the actuator 4 to the housing 2, as a result of which a gap between the actuator 4 and the housing 2 can be eliminated. As a result, the temperature of the actuator 4 can be reduced by better heat dissipation. In addition, the fixed mounting of the actuator 2 can move Cable routing between the actuator 4 and the electrical plug contact 6 along the coupler 10 is eliminated.
- the electrical line 6 passes through the actuator base 7 through bores 22 which are formed in the actuator base 7. Because the hydraulic coupler 10 is arranged on the downstream side of the actuator 4, the electrical lines 6 can be laid on the actuator 4 shorter and without movement-compensating cable guides.
- the valve housing 2 can be slimmer because the electrical lines 6 do not have to be routed around the hydraulic coupler 10.
- the fuel is supplied via a central inlet connection 23, in which a filter 24 can be arranged.
- the fuel is conducted to the sealing seat via bores 25 and a gap 26 formed between the actuator housing 9 and the valve housing 2.
- the inlet connection 23 is provided in FIG. 2 with a plastic encapsulation 27, on which a plug 28 for the electrical lines 6 is molded.
- 3A and 3B show detailed views of the plug 28 in a view of the fuel injection valve 1 in the outflow direction of the fuel.
- the fuel injector 1 is shown without plastic encapsulation 27 as in FIG. 1.
- the electrical lines 6 are led straight and straight into the actuator base 7 and run parallel to the bore 25 through which the fuel is supplied from the inlet connection 23.
- Fig. 3B the connector 28 is shown after the encapsulation of the inlet connector 23 with plastic 27 in the same view.
- the plastic encapsulation 27 and the plug 28 can be produced simply and inexpensively in one process step.
- the electrical lines 6 are through the plastic encapsulation 27 at the inlet connection 23 and fixed to the actuator foot 7 and protected from damage.
- the coupler 10 is pivotably mounted between the actuator head 8 and valve needle 19 by means of a spherical cap 17.
- the cap 17 is arranged in FIGS. 1 and 2 between the hydraulic coupler 10 and an actuating element 18, which is in operative connection with the valve needle 19.
- the invention is not restricted to the exemplary embodiment shown and is 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 (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0407942-6A BRPI0407942A (pt) | 2003-03-12 | 2004-01-23 | válvula de injeção de combustìvel |
| US10/547,962 US7635093B2 (en) | 2003-03-12 | 2004-01-23 | Fuel injection valve |
| DE502004004809T DE502004004809D1 (de) | 2003-03-12 | 2004-01-23 | Brennstoffeinspritzventil |
| JP2005518295A JP2006513363A (ja) | 2003-03-12 | 2004-01-23 | 燃料噴射弁 |
| EP04704537A EP1606509B1 (de) | 2003-03-12 | 2004-01-23 | Brennstoffeinspritzventil |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10310790.8 | 2003-03-12 | ||
| DE2003110790 DE10310790A1 (de) | 2003-03-12 | 2003-03-12 | Brennstoffeinspritzventil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004081367A1 true WO2004081367A1 (de) | 2004-09-23 |
Family
ID=32892081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2004/000098 Ceased WO2004081367A1 (de) | 2003-03-12 | 2004-01-23 | Brennstoffeinspritzventil |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7635093B2 (de) |
| EP (1) | EP1606509B1 (de) |
| JP (1) | JP2006513363A (de) |
| CN (1) | CN100404846C (de) |
| BR (1) | BRPI0407942A (de) |
| DE (2) | DE10310790A1 (de) |
| WO (1) | WO2004081367A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10357189A1 (de) * | 2003-12-08 | 2005-07-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| JP4614189B2 (ja) * | 2008-05-12 | 2011-01-19 | 株式会社デンソー | 燃料噴射装置 |
| US20100001094A1 (en) * | 2008-07-03 | 2010-01-07 | Caterpillar Inc. | Apparatus and method for cooling a fuel injector including a piezoelectric element |
| DE102012202909A1 (de) * | 2012-02-27 | 2013-08-29 | Robert Bosch Gmbh | Ventil zum Zumessen von Fluid |
| DE102013219225A1 (de) * | 2013-09-25 | 2015-03-26 | Continental Automotive Gmbh | Piezo-Injektor zur Kraftstoff-Direkteinspritzung |
| CN103752431B (zh) * | 2014-02-21 | 2015-12-30 | 厦门大学 | 模块化多线微射流雾化器 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19500706A1 (de) * | 1995-01-12 | 1996-07-18 | Bosch Gmbh Robert | Zumeßventil zur Dosierung von Flüssigkeiten oder Gasen |
| EP0967386A2 (de) * | 1998-05-29 | 1999-12-29 | LUCAS INDUSTRIES public limited company | Kraftstoffeinspritzventil |
| EP0995901A1 (de) * | 1998-10-22 | 2000-04-26 | Lucas Industries Limited | Kraftstoffeinspritzventil |
| EP1096136A2 (de) * | 1999-10-29 | 2001-05-02 | Delphi Technologies, Inc. | Kraftstoffeinspritzventil |
| DE10149052A1 (de) * | 2000-10-05 | 2002-07-18 | Denso Corp | Verbesserte Struktur einer Kraftstoffeinspritzeinrichtung zum Vermeiden des Einspritzens einer übermässigen Kraftstoffmenge |
| DE10133265A1 (de) * | 2001-07-09 | 2003-01-23 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Family Cites Families (15)
| 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 |
| JPH0776590B2 (ja) | 1988-06-09 | 1995-08-16 | 日本電装株式会社 | 圧電体アクチユエータを備えた油圧切換弁 |
| DE3831196A1 (de) | 1988-09-14 | 1990-03-22 | Bosch Gmbh Robert | Elektromagnetisch betaetigbares ventil |
| JP3029958B2 (ja) | 1993-01-18 | 2000-04-10 | シャープ株式会社 | 半導体記憶装置 |
| JPH10205406A (ja) | 1997-01-27 | 1998-08-04 | Denso Corp | 燃料噴射弁 |
| DE19817320C1 (de) * | 1998-04-18 | 1999-11-11 | Daimler Chrysler Ag | Einspritzventil für Kraftstoffeinspritzsysteme |
| DE19843535A1 (de) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| DE19942816A1 (de) * | 1999-09-08 | 2001-03-22 | Daimler Chrysler Ag | Einspritzventil |
| TW507267B (en) | 1999-09-13 | 2002-10-21 | Asahi Glass Co Ltd | Pellicle and its manufacturing method |
| DE19950760A1 (de) | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| DE19963568A1 (de) * | 1999-12-29 | 2001-07-05 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| JP2002202028A (ja) | 2000-12-28 | 2002-07-19 | Denso Corp | 燃料噴射弁 |
| JP4140184B2 (ja) | 2000-10-05 | 2008-08-27 | 株式会社デンソー | 燃料噴射装置 |
| WO2003016707A1 (de) | 2001-08-08 | 2003-02-27 | Siemens Aktiengesellschaft | Dosiervorrichtung |
| DE10360450A1 (de) * | 2003-02-27 | 2004-09-09 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
-
2003
- 2003-03-12 DE DE2003110790 patent/DE10310790A1/de not_active Withdrawn
-
2004
- 2004-01-23 CN CNB2004800066662A patent/CN100404846C/zh not_active Expired - Fee Related
- 2004-01-23 EP EP04704537A patent/EP1606509B1/de not_active Expired - Lifetime
- 2004-01-23 JP JP2005518295A patent/JP2006513363A/ja active Pending
- 2004-01-23 BR BRPI0407942-6A patent/BRPI0407942A/pt not_active IP Right Cessation
- 2004-01-23 DE DE502004004809T patent/DE502004004809D1/de not_active Expired - Lifetime
- 2004-01-23 US US10/547,962 patent/US7635093B2/en not_active Expired - Fee Related
- 2004-01-23 WO PCT/DE2004/000098 patent/WO2004081367A1/de not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19500706A1 (de) * | 1995-01-12 | 1996-07-18 | Bosch Gmbh Robert | Zumeßventil zur Dosierung von Flüssigkeiten oder Gasen |
| EP0967386A2 (de) * | 1998-05-29 | 1999-12-29 | LUCAS INDUSTRIES public limited company | Kraftstoffeinspritzventil |
| EP0995901A1 (de) * | 1998-10-22 | 2000-04-26 | Lucas Industries Limited | Kraftstoffeinspritzventil |
| EP1096136A2 (de) * | 1999-10-29 | 2001-05-02 | Delphi Technologies, Inc. | Kraftstoffeinspritzventil |
| DE10149052A1 (de) * | 2000-10-05 | 2002-07-18 | Denso Corp | Verbesserte Struktur einer Kraftstoffeinspritzeinrichtung zum Vermeiden des Einspritzens einer übermässigen Kraftstoffmenge |
| DE10133265A1 (de) * | 2001-07-09 | 2003-01-23 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100404846C (zh) | 2008-07-23 |
| EP1606509A1 (de) | 2005-12-21 |
| US7635093B2 (en) | 2009-12-22 |
| EP1606509B1 (de) | 2007-08-29 |
| CN1759237A (zh) | 2006-04-12 |
| DE10310790A1 (de) | 2004-09-23 |
| DE502004004809D1 (de) | 2007-10-11 |
| US20060175438A1 (en) | 2006-08-10 |
| JP2006513363A (ja) | 2006-04-20 |
| BRPI0407942A (pt) | 2006-02-21 |
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