DE10307003B3 - IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores - Google Patents
IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores Download PDFInfo
- Publication number
- DE10307003B3 DE10307003B3 DE10307003A DE10307003A DE10307003B3 DE 10307003 B3 DE10307003 B3 DE 10307003B3 DE 10307003 A DE10307003 A DE 10307003A DE 10307003 A DE10307003 A DE 10307003A DE 10307003 B3 DE10307003 B3 DE 10307003B3
- Authority
- DE
- Germany
- Prior art keywords
- actuator
- nozzle needle
- fuel injection
- injection
- 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.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 title 1
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000004913 activation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 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
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
-
- 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
- F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
- F02M2200/702—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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
Die Erfindung betrifft ein Einspritzventil für die Einspritzung von Kraftstoff in eine Verbrennungskraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an injection valve for the Injection of fuel into an internal combustion engine after the preamble of claim 1.
Für die Kraftstoffversorgung von Verbrennungsmotoren werden zunehmend Speichereinspritzsysteme verwendet, bei denen mit sehr hohen Einspritzdrücken gearbeitet wird. Solche Einspritzsysteme sind als Common-Rail-Systeme (für Dieselmotoren) und HPDI-Einspritzsysteme (für Ottomotoren) bekannt. Bei diesen Einspritzsystemen wird der Kraftstoff mit einer Hochdruckpumpe in einen allen Zylindern des Motors gemeinsamen Druckspeicher gefördert, von dem aus die Einspritzventile an den einzelnen Zylindern mit Kraftstoff versorgt werden. Das Öffnen und Schließen der Einspritzventile wird dabei in der Regel elektromagnetisch gesteuert.For the fuel supply to internal combustion engines is increasing Accumulator injection systems are used in which very high injection pressures are used becomes. Such injection systems are common rail systems (for diesel engines) and HPDI injection systems (for Gasoline engines). With these injection systems, the fuel with a high pressure pump in a common to all cylinders of the engine Pressure accumulator promoted, from where the injectors on the individual cylinders Fuel are supplied. The opening and closing the injection valves are usually controlled electromagnetically.
Zu diesem Zweck sind die Einspritzventile bei solchen Systemen mit schaltbaren Aktoren, insbesondere piezoelektrischen Aktoren, ausgerüstet, die das Öffnen und Schließen der Düsennadel des Einspritzventils steuern, das heißt insbesondere den Beginn und das Ende des Einspritzvorgangs zeitlich festlegen.For this purpose, the injectors are at such systems with switchable actuators, especially piezoelectric Actuators equipped, the opening and closing the nozzle needle control of the injection valve, that is, in particular the beginning and schedule the end of the injection process.
Da bei Dieselmotoren der Kraftstoff mit einem Druck von bis über 1500 bar in eine Brennkammer des Motors eingespritzt wird, werden an die Einspritzventile sehr hohe Anforderungen hinsichtlich der Dichtheit gestellt. Bei den aus der Praxis bekannten Common-Rail-Injektoren stellt die Leckage, sowohl die Dauerleckage als auch die Schaltleckage, einen deutlichen Leistungsverlust dar. Diese Leckagen treten beispielsweise im Bereich der Düsennadel auf. Eine Leckagestelle bildet hierbei das Verschließen der Einspritzbohrungen bei nicht betätigtem Aktor.Because with diesel engines the fuel with a pressure of up to over 1500 bar is injected into a combustion chamber of the engine to the injectors very high demands regarding the Tightness. In the common rail injectors known from practice represents the leakage, both the permanent leakage and the switching leakage significant loss of performance. These leaks occur, for example in the area of the nozzle needle. A leakage point forms here when the injection bores are closed when not activated Actuator.
Aus der
Aus
Aus
Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Einspritzventil bereitzustellen, dessen Düsennadel die Einspritzbohrungen bei nicht betätigtem Aktor zuverlässig verschließt.The invention is based on this the task of providing an injection valve, the nozzle needle reliably closes the injection bores when the actuator is not actuated.
Die Merkmale eines erfindungsgemäßen Einspritzventils werden im Patentanspruch 1 genannt.The features of an injection valve according to the invention are mentioned in claim 1.
Vorteilhafte Ausgestaltungen des Einspritzventils werden in den Unteransprüchen beschrieben.Advantageous embodiments of the Injector are described in the subclaims.
Durch das erfindungsgemäße jederzeit spielfreie Zusammenwirken von Aktor einerseits und Düsennadel andererseits wird sichergestellt, dass auch bei nicht betätigtem Aktor, das heißt bei stromlosem Aktor im Falle eines piezoelektrischen Aktors, die Düsennadel mittels der Feder die Einspritzbohrungen zuverlässig verschließend gegen den Dichtsitz gepreßt wird.Through the invention at any time backlash-free interaction of the actuator on the one hand and the nozzle needle on the other hand, it ensures that even when the actuator is not actuated, this means with de-energized actuator in the case of a piezoelectric actuator, the nozzle needle by means of the spring, reliably closing the injection bores pressed the sealing seat becomes.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der zugehörigen Zeichnung, in der ein Ausführungsbeispiel eines erfindungsgemäßen Einspritzventils dargestellt ist. In der Zeichnung zeigt:Other features and advantages of Invention result from the following description of the accompanying drawing, in the an embodiment of an injection valve according to the invention is. The drawing shows:
Wie aus der Abbildung
Der Aktor
Die Betätigung der Düsennadel
Wie weiterhin aus
Die zwischen der Bodenplatte
Das Betätigen der Düsennadel
Die Abbildung
The image
Sobald der piezoelektrische Aktor
Das Anheben der Düsennadel
Der Kraftstoffzufluss zu den Einspritzbohrungen
Damit der Kraftstoff durch die Bohrung
Das Schließen der Einspritzbohrungen
Sobald die über den Aktor
Ein solchermaßen ausgestaltetes Einspritzventil
zeichnet sich dadurch aus, dass das zwischen dem Aktor
Weiterhin ist bei diesem Einspritzventil
vorteilhaft, dass das Auftreten von Schalt- und Dauerleckagestellen
im wesentlichen vollständig
beseitigt werden konnte, da die Betätigung der Düsennadel
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10307003A DE10307003B3 (en) | 2003-02-19 | 2003-02-19 | IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores |
| PCT/EP2004/001624 WO2004074672A1 (en) | 2003-02-19 | 2004-02-19 | Injection valve for injecting fuel into an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10307003A DE10307003B3 (en) | 2003-02-19 | 2003-02-19 | IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10307003B3 true DE10307003B3 (en) | 2004-05-13 |
Family
ID=32103483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10307003A Expired - Fee Related DE10307003B3 (en) | 2003-02-19 | 2003-02-19 | IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE10307003B3 (en) |
| WO (1) | WO2004074672A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006031372A1 (en) * | 2006-07-06 | 2008-01-10 | Siemens Ag | Fuel injector, for an internal combustion motor, has a lever conversion system between the actuator and the jet needle with movement to compensate for a fuel pressure drop |
| DE102007036571B3 (en) * | 2007-08-03 | 2009-04-02 | Continental Automotive Gmbh | Injector and device with a vessel and a housing enclosing the vessel |
| DE102006031373B4 (en) * | 2006-07-06 | 2013-03-07 | Continental Automotive Gmbh | Injection system and method for manufacturing an injection system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0995901A1 (en) * | 1998-10-22 | 2000-04-26 | Lucas Industries Limited | Fuel injector |
| DE19952057A1 (en) * | 1999-10-28 | 2001-05-03 | Bosch Gmbh Robert | Fuel injector |
| DE10101799A1 (en) * | 2001-01-17 | 2002-07-18 | Bosch Gmbh Robert | Valve for controlling fluids has an actuator, a mechanical changeover device for switching over the stroke in the actuator, a readjusting device and a valve element. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19714486C2 (en) * | 1997-04-08 | 1999-12-30 | Siemens Ag | Device for transmitting a deflection of an actuator |
| DE19757659C1 (en) * | 1997-12-23 | 1999-06-17 | Siemens Ag | Fuel injection valve with compensation surface e.g. for motor vehicle IC engine |
| DE19911048A1 (en) * | 1999-03-12 | 2000-09-14 | Bosch Gmbh Robert | Fuel injector |
| DE19915210A1 (en) * | 1999-04-03 | 2000-10-05 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine, with actuator acting via needle carrier on valve needle |
| DE19940055C1 (en) * | 1999-08-24 | 2001-04-05 | Siemens Ag | Dosing valve |
| US6279842B1 (en) * | 2000-02-29 | 2001-08-28 | Rodi Power Systems, Inc. | Magnetostrictively actuated fuel injector |
| DE10203655A1 (en) * | 2002-01-30 | 2004-01-22 | Robert Bosch Gmbh | Fuel injector |
| DE10254186A1 (en) * | 2002-11-20 | 2004-06-17 | Siemens Ag | Injector with a directly driven register nozzle needle for fuel injection into an internal combustion engine |
-
2003
- 2003-02-19 DE DE10307003A patent/DE10307003B3/en not_active Expired - Fee Related
-
2004
- 2004-02-19 WO PCT/EP2004/001624 patent/WO2004074672A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0995901A1 (en) * | 1998-10-22 | 2000-04-26 | Lucas Industries Limited | Fuel injector |
| DE19952057A1 (en) * | 1999-10-28 | 2001-05-03 | Bosch Gmbh Robert | Fuel injector |
| DE10101799A1 (en) * | 2001-01-17 | 2002-07-18 | Bosch Gmbh Robert | Valve for controlling fluids has an actuator, a mechanical changeover device for switching over the stroke in the actuator, a readjusting device and a valve element. |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006031372A1 (en) * | 2006-07-06 | 2008-01-10 | Siemens Ag | Fuel injector, for an internal combustion motor, has a lever conversion system between the actuator and the jet needle with movement to compensate for a fuel pressure drop |
| DE102006031373B4 (en) * | 2006-07-06 | 2013-03-07 | Continental Automotive Gmbh | Injection system and method for manufacturing an injection system |
| DE102007036571B3 (en) * | 2007-08-03 | 2009-04-02 | Continental Automotive Gmbh | Injector and device with a vessel and a housing enclosing the vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004074672A1 (en) | 2004-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
| 8339 | Ceased/non-payment of the annual fee |