DE10232250A1 - Common rail injector for injecting fuel in a common rail injection system for an internal combustion engine has fuel runback/electric plug-in connections contacted by a plug - Google Patents
Common rail injector for injecting fuel in a common rail injection system for an internal combustion engine has fuel runback/electric plug-in connections contacted by a plug Download PDFInfo
- Publication number
- DE10232250A1 DE10232250A1 DE2002132250 DE10232250A DE10232250A1 DE 10232250 A1 DE10232250 A1 DE 10232250A1 DE 2002132250 DE2002132250 DE 2002132250 DE 10232250 A DE10232250 A DE 10232250A DE 10232250 A1 DE10232250 A1 DE 10232250A1
- Authority
- DE
- Germany
- Prior art keywords
- plug
- common rail
- fuel
- connection
- fuel return
- 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
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
Abstract
Description
Die Erfindung geht aus von einem Common-Rail-Injektor nach der Gattung des Patentanspruchs 1.The invention is based on one Common rail injector according to the preamble of claim 1.
Bei einem bekannten Common-Rail-Injektor dieser Art (z.B. WO 01/18382 A1) ist auf einen Niederdruckanschlussstutzen und einen elektrischen Anschlusskontakt, die beide parallel zueinander vom Injektorgehäuse vorstehen, ein Stecker aufgesteckt. Die im Betrieb des Injektors anfallende und am Niederdruckanschlussstutzen anstehende Kraftstoffrücklaufmenge (Lecköl) wird über eine entsprechende Anschlussleitung des Steckers einem Kraftstofftank zugeführt. Ein Steuerventil des Injektors ist über den elektrischen Anschlusskontakt und eine elektrische Anschlussleitung des Steckers mit einem Steuergerät verbunden, über das der Injektor betätigbar ist, um mit Hochdruck beaufschlagten Kraftstoff in den Brennraum einer Brennkraftmaschine einzuspritzen. Beim Aufstecken des Steckers wird die Kraftstoffrücklaufverbindung gleichzeitig mit der elektrischen Verbindung hergestellt, so dass versehentlich Lecköl nach außen und in den Bereich der elektrischen Anschlusskontakte austreten kann.In a known common rail injector this Art (e.g. WO 01/18382 A1) is on a low pressure connector and an electrical connection contact, both parallel to each other from the injector housing protrude, a plug is plugged in. The one in operation of the injector Accumulated fuel return quantity at the low pressure connection piece (Leak oil) is about a corresponding connection line of the plug to a fuel tank fed. A control valve of the injector is via the electrical connection contact and an electrical connection line of the plug is connected to a control unit via which the injector can be operated, to pressurized fuel into the combustion chamber of a Inject internal combustion engine. When the plug is inserted the fuel return connection established simultaneously with the electrical connection, so that accidentally leak oil outward and emerge into the area of the electrical connection contacts can.
Beim erfindungsgemäßen Common-Rail-Injektor wird die Kraftstoffrücklaufverbindung aufgrund der unterschiedlichen Steck- bzw. Fügelängen der beiden Steckanschlüsse vor der elektrischen Verbindung hergestellt, wodurch die Umgebung und insbesondere die elektrischen Anschlusskontakte der Steckverbindung vor auslaufendem Kraftstoff geschützt sind. Ein undefiniertes Herumspritzen und ein Nachtropfen von Kraftstoff werden so vermieden. Außerdem wird durch die frühzeitige Führung des Kraftstoffrücklauf-Steckanschlusses eine längere Zwangsführung des Steckers erreicht. Durch Dichtungen, die kurz nach Führungsbeginn im Steckbereich des Kraftstoffrücklauf-Steckanschlusses vorgesehen sind, kann der Austritt von Kraftstoff nach außen und in den Bereich der elektrischen Anschlüsse wirkungsvoll verhindert werden. Vorzugsweise sind die Dichtungen (z.B. O-Ringe) und auch andere Teile (z.B. Leckölanschlussstutzen, elektrische Kontakte, ...) in einem Spritzgussteil als Einlegeteile umspritzt. Es sind keine zusätzlichen Befestigungen und Arretierungen für die Leckölverbindung notwendig. Die Arretierung quer zur Steckrichtung wird durch die Stecklänge der Steckverbindung erreicht, und die Arretierung in Steckrichtung erfolgt vorzugsweise über eine Steckerverriegelung.In the common rail injector according to the invention becomes the fuel return connection due to the different plug or joint lengths of the two plug connections of the electrical connection, creating the environment and in particular the electrical connection contacts of the plug connection are protected from leaking fuel. An undefined Splashing around and dripping fuel is avoided. Moreover is through the early guide the fuel return connector a longer forced operation of the Connector reached. Through seals that shortly after the start of the tour in the plug area of the fuel return plug connection are provided, the fuel can escape to the outside and effectively prevented in the area of electrical connections become. Preferably the seals (e.g. O-rings) are also other parts (e.g. drain port, electrical contacts, ...) in an injection molded part as inserts molded. There are no additional ones Fastenings and locks necessary for the leak oil connection. The lock across the direction of insertion is achieved by the insertion length of the connector, and the locking in the direction of insertion is preferably via a Connector lock.
Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstands der Erfindung sind der Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Other advantages and beneficial Embodiments of the object of the invention are the description, the drawing and the claims removable.
Ein bevorzugtes Ausführungsbeispiel des erfindungsgemäßen Common-Rail-Injektors ist in der Zeichnung schematisch dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:A preferred embodiment of the common rail injector according to the invention is in the drawing is shown schematically and in the description below explained in more detail. It demonstrate:
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Der in
Die im Betrieb des Injektors
Das Steuerventil mit seinem elektrischen
Aktor wird über
zwei elektrische Anschlusskontakte
Wie in
Außen am elektrischen Steckanschluss
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002132250 DE10232250A1 (en) | 2002-07-17 | 2002-07-17 | Common rail injector for injecting fuel in a common rail injection system for an internal combustion engine has fuel runback/electric plug-in connections contacted by a plug |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002132250 DE10232250A1 (en) | 2002-07-17 | 2002-07-17 | Common rail injector for injecting fuel in a common rail injection system for an internal combustion engine has fuel runback/electric plug-in connections contacted by a plug |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10232250A1 true DE10232250A1 (en) | 2004-02-05 |
Family
ID=30010069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002132250 Ceased DE10232250A1 (en) | 2002-07-17 | 2002-07-17 | Common rail injector for injecting fuel in a common rail injection system for an internal combustion engine has fuel runback/electric plug-in connections contacted by a plug |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10232250A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009021821A1 (en) * | 2007-08-13 | 2009-02-19 | Robert Bosch Gmbh | Electric plug having fuel return |
WO2010112317A1 (en) * | 2009-04-02 | 2010-10-07 | Robert Bosch Gmbh | Fuel injection device |
EP3168453A1 (en) * | 2015-11-10 | 2017-05-17 | Delphi International Operations Luxembourg S.à r.l. | Interface assembly for a fuel injector |
-
2002
- 2002-07-17 DE DE2002132250 patent/DE10232250A1/en not_active Ceased
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009021821A1 (en) * | 2007-08-13 | 2009-02-19 | Robert Bosch Gmbh | Electric plug having fuel return |
US8177568B2 (en) | 2007-08-13 | 2012-05-15 | Robert Bosch Gmbh | Electric plug having fuel return |
CN101796289B (en) * | 2007-08-13 | 2012-07-04 | 罗伯特.博世有限公司 | Electric plug having fuel return |
WO2010112317A1 (en) * | 2009-04-02 | 2010-10-07 | Robert Bosch Gmbh | Fuel injection device |
CN102369348A (en) * | 2009-04-02 | 2012-03-07 | 罗伯特·博世有限公司 | Fuel injection device |
US20120090577A1 (en) * | 2009-04-02 | 2012-04-19 | Robert Bosch Gmbh | Fuel injection device |
CN102369348B (en) * | 2009-04-02 | 2014-12-10 | 罗伯特·博世有限公司 | Fuel injection device |
US9175652B2 (en) | 2009-04-02 | 2015-11-03 | Robert Bosch Gmbh | Fuel injection device |
EP3168453A1 (en) * | 2015-11-10 | 2017-05-17 | Delphi International Operations Luxembourg S.à r.l. | Interface assembly for a fuel injector |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |