DE102007019076A1 - Distribution pipe for a common rail injection system of a diesel engine comprises a pressure limiting valve having a valve seat formed on a step of a multi-step bore of the pipe passing through the wall of the pipe - Google Patents
Distribution pipe for a common rail injection system of a diesel engine comprises a pressure limiting valve having a valve seat formed on a step of a multi-step bore of the pipe passing through the wall of the pipe Download PDFInfo
- Publication number
- DE102007019076A1 DE102007019076A1 DE200710019076 DE102007019076A DE102007019076A1 DE 102007019076 A1 DE102007019076 A1 DE 102007019076A1 DE 200710019076 DE200710019076 DE 200710019076 DE 102007019076 A DE102007019076 A DE 102007019076A DE 102007019076 A1 DE102007019076 A1 DE 102007019076A1
- Authority
- DE
- Germany
- Prior art keywords
- manifold
- stage
- spring
- distributor tube
- tube according
- 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.)
- Withdrawn
Links
- 238000002347 injection Methods 0.000 title claims abstract description 11
- 239000007924 injection Substances 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000243 solution 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0054—Check valves
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
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
Bei einem Verteilerrohr, insbesondere für ein Common-Rail-Einspritzsystem eines Dieselmotors, mit einem Druckbegrenzungsventil (70, 74, 86), das einen vom Inneren des Verteilerrohrs (10) nach außen führenden Durchlass (60, 80) aufweist, in dem ein Ventilsitz (70) ausgebildet ist, gegen den ein nach außen öffnendes Ventilglied (74) von einer Feder (86) in dichtende Anlage gedrückt wird, welches Ventilglied gegen die Kraft der Feder öffnet, wenn der Druck in dem Verteilerrohr einen vorbestimmten Wert übersteigt, ist der Ventilsitz (70) an einer Stufe (62, 64) einer mehrstufigen, durch eine Wand des Verteilerrohrs (10) hindurchführenden Bohrung (60) des Verteilerrohrs ausgebildet.In a distributor pipe, in particular for a common-rail injection system of a diesel engine, with a pressure-limiting valve (70, 74, 86) having a passage (60, 80) leading outwardly from the interior of the distributor pipe (10), in which a valve seat (70) is formed, against which an outwardly opening valve member (74) by a spring (86) is pressed into sealing engagement, which valve member against the force of the spring opens when the pressure in the manifold exceeds a predetermined value, the Valve seat (70) on a step (62, 64) of a multi-stage, through a wall of the manifold (10) passing through the bore (60) of the manifold formed.
Description
Die Erfindung betrifft ein Verteilerrohr, insbesondere für ein Common Rail Einspritzsystem eines Dieselmotors, gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a manifold, in particular for a common Rail injection system of a diesel engine, according to the preamble of the claim 1.
Neuere Einspritzsysteme für Dieselkraftstoff, mit denen sowohl eine Verbesserung des Wirkungsgrades als auch eine verminderte Schadstoffbelastung der Umwelt erzielt wird, sind so konzipiert, dass mittels einer elektronischen Steuerung der Einspritzzeitpunkt in Abhängigkeit von den jeweiligen Betriebsbedingungen optimiert wird, wobei zusätzlich eine Haupteinspritzung mehreren Voreinspritzungen folgen kann. Voraussetzung für den Einsatz solcher Einspritzsysteme ist die Bereitstellung von hoch komprimiertem Kraftstoff in den Zuleitungen zu den elektronisch gesteuerten Einspritzdüsen, die zum Teil mit Piezoelementen arbeiten. Ein solcher hoch komprimierter Kraftstoff kann in sogenannten Common Rail Systemen bereitgestellt werden, in denen ein Verteilerrohr, von dem aus zu den Einspritzdüsen führende Leitungen abzweigen, mit unter hohem Druck stehendem Kraftstoff beschickt wird. Inzwischen wird mit Drucken bis zu über 2000 bar gearbeitet. Aufgrund der hohen Drucke sind die Anforderungen an das Leitungssystem, insbesondere das Verteilerrohr, das auch als Druckspeicher funktioniert, bezüglich der Materialfestigkeit sehr hoch.newer Injection systems for Diesel fuel with which both improve the efficiency achieved as well as a reduced pollution of the environment is designed so that by means of an electronic control the injection time in dependence is optimized by the respective operating conditions, with an additional Main injection can follow multiple pilot injections. requirement for the Use of such injection systems is the provision of high compressed fuel in the supply lines to the electronic controlled injectors, some of which work with piezo elements. Such a highly compressed Fuel can be provided in so-called common rail systems in which a manifold, from which out to the injectors leading lines branch off, fed with high pressure fuel becomes. In the meantime, pressures of up to more than 2000 bar are used. Due to the high pressures are the requirements of the piping system, in particular the manifold, which also works as a pressure accumulator, regarding the material strength very high.
Damit unzulässig hohe Drucke nicht zu gefährlichen Zuständen führen, ist bekannt, das System mittels eines am Verteilerrohr angebrachten Druckbegrenzungsventils zu schützen, das bei Überschreiten eines vorbestimmten Druckniveaus öffnet.In order to inadmissible high pressures not too dangerous states to lead, is known, the system by means of a mounted on the manifold To protect the pressure relief valve, that when crossing of a predetermined pressure level opens.
Gemäß
In
das Innengewinde
Das
Sitzteil weist einen zylindrischen Vorsprung
Der Übergang
von der zweiten Stufe zur dritten Stufe bildet einen Ventilsitz,
gegen den eine Stirnseite des Schaftes eines Ventilgliedes
Die
vierte Stufe
Zwischen
einem radial einwärts
von der Wandung der Durchgangsbohrung
Die
beschriebene an sich bekannte Konstruktion des Druckbegrenzungsventils
Der Erfindung liegt die Aufgabe zugrunde, ein mit einem Druckbegrenzungsventil versehenes Verteilerrohr, insbesondere für ein Common Rail Einspritzsystem eines Dieselmotors, zu schaffen, dessen Aufbau vereinfacht ist.Of the Invention is based on the object, one with a pressure relief valve provided distributor pipe, in particular for a common rail injection system a diesel engine, whose construction is simplified.
Eine Lösung der vorgenannten Aufgabe wird mit einem Verteilerrohr gemäß dem Anspruch 1 erzielt.A solution the above object is achieved with a manifold according to the claim 1 scored.
Dadurch, dass der Ventilsitz einteilig mit dem Verteilerrohr ausgebildet ist bzw. integrierter Bestandteil des Verteilerrohrs ist, kann das „Gehäuse" des Druckbegrenzungsventils einteilig ausgebildet sein, wodurch die Anzahl der Gewindeverbindungen und der gegenseitig abzudichtenden Flächen vermindert ist.Thereby, the valve seat is formed integrally with the distributor tube is or is an integral part of the manifold, the "housing" of the pressure relief valve be formed in one piece, whereby the number of threaded connections and the surfaces to be sealed is reduced.
Die Unteransprüche sind auf vorteilhafte Ausführungsformen und Weiterbildungen des erfindungsgemäßen Verteilerrohrs gerichtet.The under claims are on advantageous embodiments and further developments of the manifold according to the invention directed.
Die Erfindung wird im Folgenden anhand schematischer Zeichnungen beispielsweise und mit weiteren Einzelheiten erläutert.The Invention will be described below with reference to schematic drawings, for example and explained in more detail.
In den Figuren stellen dar:In the figures represent:
Gemäß
Der Übergang
von der ersten Stufe
Die
vierte Stufe
Das
Innengewinde
Die
Durchgangsbohrung
Zur
Sicherung des Gewindeeingriffs zwischen dem Federhalteteil
Das
Verteilerrohr
Die
Montage der beschriebenen Anwendung ist wie folgt:
In die mechanisch
fertig bearbeitete mit der Achse A-A ausgebildete Durchgangsbohrung
In the mechanically finished trained with the axis AA through hole
Wenn
der Druck in dem Durchgangskanal
Mit
der erfindungsgemäßen Ausbildung
der beschriebenen Anordnung werden gegenüber der Ausführungsform
gemäß
Es ist nur eine Gewindeverschraubung (Innengewinde
It is only a threaded union (internal thread
Die
Erfindung kann in vielfältiger
Weise abgeändert
werden. Beispielsweise muss die Anordnung nicht an einer Stirnseite
des Verteilerrohrs
- 1010
- Verteilerrohrmanifold
- 1212
- DurchgangskanalThrough channel
- 1414
- Bohrungdrilling
- 1616
- Innengewindeinner thread
- 1818
- DruckbegrenzungsventilPressure relief valve
- 2020
- Sitzteilseat part
- 2222
- FederhalteteilSpring holding part
- 2424
- zylindrischer Vorsprungcylindrical head Start
- 2626
- Außengewindeexternal thread
- 2828
- erste Stufefirst step
- 3030
- zweite Stufesecond step
- 3232
- dritte Stufethird step
- 3434
- vierte Stufefourth step
- 3636
- Ventilgliedvalve member
- 3838
- Kopfhead
- 4040
- Innengewindeinner thread
- 4242
- Außengewindeexternal thread
- 4444
- DurchgangsbohrungThrough Hole
- 4646
- BundFederation
- 4848
- Druckfedercompression spring
- 5050
- Dichtringseal
- 6060
- DurchgangsbohrungThrough Hole
- 6262
- erste Stufefirst step
- 6464
- zweite Stufesecond step
- 6666
- dritte Stufethird step
- 6868
- vierte Stufefourth step
- 7070
- Ventilsitzvalve seat
- 7272
- Schaftshaft
- 7474
- Ventilgliedvalve member
- 7575
- Kopfhead
- 7676
- Innengewindeinner thread
- 7878
- Außengewindeexternal thread
- 8080
- DurchgangsbohrungThrough Hole
- 8282
- FederhalteteilSpring holding part
- 8484
- Dichtringseal
- 8585
- BundFederation
- 8686
- Druckfedercompression spring
- 8888
- Abflachungflattening
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710019076 DE102007019076A1 (en) | 2007-04-23 | 2007-04-23 | Distribution pipe for a common rail injection system of a diesel engine comprises a pressure limiting valve having a valve seat formed on a step of a multi-step bore of the pipe passing through the wall of the pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710019076 DE102007019076A1 (en) | 2007-04-23 | 2007-04-23 | Distribution pipe for a common rail injection system of a diesel engine comprises a pressure limiting valve having a valve seat formed on a step of a multi-step bore of the pipe passing through the wall of the pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102007019076A1 true DE102007019076A1 (en) | 2008-10-30 |
Family
ID=39777372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200710019076 Withdrawn DE102007019076A1 (en) | 2007-04-23 | 2007-04-23 | Distribution pipe for a common rail injection system of a diesel engine comprises a pressure limiting valve having a valve seat formed on a step of a multi-step bore of the pipe passing through the wall of the pipe |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102007019076A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174270A1 (en) * | 2010-01-20 | 2011-07-21 | Poppe & Potthoff Gmbh | Pressure relief valve |
| FR2969218A1 (en) * | 2010-12-20 | 2012-06-22 | Bosch Gmbh Robert | HIGH PRESSURE INJECTION ACCUMULATOR VARIABLE SECTION PISTON PRESSURE LIMIT VALVE |
| WO2016000913A1 (en) * | 2014-06-30 | 2016-01-07 | Delphi International Operations Luxembourg S.À R.L. | Pressure limiting valve |
| CN113027654A (en) * | 2021-04-27 | 2021-06-25 | 山东聊城德润机电科技发展有限公司 | Safety pressure limiting valve for high-pressure common rail of diesel engine |
| DE102011075259B4 (en) | 2010-06-29 | 2021-07-08 | Denso Corporation | OVERPRESSURE VALVE AND HIGH PRESSURE PUMP WITH SUCH VALVE |
| CN117329042A (en) * | 2023-09-28 | 2024-01-02 | 中国北方发动机研究所 | A valve seat for an electronically controlled pressure relief valve in a high-pressure common rail system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10223025A1 (en) * | 2001-05-24 | 2002-12-05 | Bosch Automotive Systems Corp | Pressure reducing valve for fuel injection system has temperature-dependent elastic element which in low temperature states has preloading force lower than pressure of inflowing fuel, allowing valve element to lift |
| DE10125944A1 (en) * | 2001-05-29 | 2002-12-05 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines, in particular diesel engines |
| DE10129822A1 (en) * | 2001-06-13 | 2003-01-02 | Mtu Friederichshafen Gmbh | Pressure limiting valve for internal combustion engine fuel injection devices, especially common-rail systems, has shaft region in which flow connection is formed by undercut section |
| DE10138756A1 (en) * | 2001-08-07 | 2003-02-20 | Bosch Gmbh Robert | High-pressure fuel storage |
| DE10222895A1 (en) * | 2002-05-23 | 2003-12-11 | Bosch Gmbh Robert | High pressure accumulator for fuel injection systems with integrated pressure control valve |
-
2007
- 2007-04-23 DE DE200710019076 patent/DE102007019076A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10223025A1 (en) * | 2001-05-24 | 2002-12-05 | Bosch Automotive Systems Corp | Pressure reducing valve for fuel injection system has temperature-dependent elastic element which in low temperature states has preloading force lower than pressure of inflowing fuel, allowing valve element to lift |
| DE10125944A1 (en) * | 2001-05-29 | 2002-12-05 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines, in particular diesel engines |
| DE10129822A1 (en) * | 2001-06-13 | 2003-01-02 | Mtu Friederichshafen Gmbh | Pressure limiting valve for internal combustion engine fuel injection devices, especially common-rail systems, has shaft region in which flow connection is formed by undercut section |
| DE10138756A1 (en) * | 2001-08-07 | 2003-02-20 | Bosch Gmbh Robert | High-pressure fuel storage |
| DE10222895A1 (en) * | 2002-05-23 | 2003-12-11 | Bosch Gmbh Robert | High pressure accumulator for fuel injection systems with integrated pressure control valve |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174270A1 (en) * | 2010-01-20 | 2011-07-21 | Poppe & Potthoff Gmbh | Pressure relief valve |
| DE102011075259B4 (en) | 2010-06-29 | 2021-07-08 | Denso Corporation | OVERPRESSURE VALVE AND HIGH PRESSURE PUMP WITH SUCH VALVE |
| FR2969218A1 (en) * | 2010-12-20 | 2012-06-22 | Bosch Gmbh Robert | HIGH PRESSURE INJECTION ACCUMULATOR VARIABLE SECTION PISTON PRESSURE LIMIT VALVE |
| WO2012084778A3 (en) * | 2010-12-20 | 2012-10-11 | Robert Bosch Gmbh | Pressure relief valve comprising a piston having a variable cross-section of a high-pressure accumulator for an injection system |
| WO2016000913A1 (en) * | 2014-06-30 | 2016-01-07 | Delphi International Operations Luxembourg S.À R.L. | Pressure limiting valve |
| CN106795849A (en) * | 2014-06-30 | 2017-05-31 | 德尔福国际业务卢森堡公司 | Pressure limiting valve |
| JP2017524868A (en) * | 2014-06-30 | 2017-08-31 | デルフィ・インターナショナル・オペレーションズ・ルクセンブルク・エス・アー・エール・エル | Pressure limiting valve |
| US10145348B2 (en) | 2014-06-30 | 2018-12-04 | Delphi Technologies Ip Limited | Pressure limiting valve |
| CN113027654A (en) * | 2021-04-27 | 2021-06-25 | 山东聊城德润机电科技发展有限公司 | Safety pressure limiting valve for high-pressure common rail of diesel engine |
| CN117329042A (en) * | 2023-09-28 | 2024-01-02 | 中国北方发动机研究所 | A valve seat for an electronically controlled pressure relief valve in a high-pressure common rail system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8130 | Withdrawal | ||
| R120 | Application withdrawn or ip right abandoned |
Effective date: 20110325 |