DE4405432C1 - High pressure accumulator as fuel distribution pipe, especially for an internal combustion engine with common-rail system - Google Patents
High pressure accumulator as fuel distribution pipe, especially for an internal combustion engine with common-rail systemInfo
- Publication number
- DE4405432C1 DE4405432C1 DE4405432A DE4405432A DE4405432C1 DE 4405432 C1 DE4405432 C1 DE 4405432C1 DE 4405432 A DE4405432 A DE 4405432A DE 4405432 A DE4405432 A DE 4405432A DE 4405432 C1 DE4405432 C1 DE 4405432C1
- Authority
- DE
- Germany
- Prior art keywords
- distribution pipe
- fuel distribution
- pressure
- high pressure
- clamping body
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 238000002485 combustion reaction Methods 0.000 title description 3
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009760 functional impairment Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel 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
- 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
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
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 einen Hochdruckspeicher als Kraftstoff verteilungsrohr, insbesondere für eine Brennkraftmaschine mit Common-Rail-System, nach den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen.The invention relates to a high-pressure accumulator as a fuel Distribution pipe, in particular for an internal combustion engine Common rail system, according to the preamble of the claim 1 specified characteristics.
Ein Common-Rail-System mit einem Kraftstoffverteilungsrohr zur Hochdruckspeicherung des Kraftstoffes und mit zu magnetventilge steuerten Injektoren führenden Hochdruckleitungen ist z. B. aus der US 5 201 294 A bekannt.A common rail system with a fuel rail High pressure storage of the fuel and with too solenoid valves controlled injectors leading high pressure lines is such. B. from the US 5 201 294 A known.
Die Anschlußverbindungen der Hochdruckleitungen am Kraftstoff verteilungsrohr sind aufgrund der vorliegenden hohen Drücke von weit über 1000 bar nicht unproblematisch. Undichtigkeiten treten auf und führen zur Funktionsbeeinträchtigung des Einspritzsy stems.The connections of the high pressure lines on the fuel distribution pipe are due to the high pressures of well over 1000 bar not without problems. Leaks occur and lead to functional impairment of the injection system stems.
Der Erfindung liegt daher die Aufgabe zugrunde, eine kostengün stige leicht montierbare Anschlußverbindung zwischen den Hoch druckleitungen und dem Kraftstoffverteilungsrohr zu schaffen, die eine dauerhafte zuverlässige Abdichtung ermöglicht.The invention is therefore based on the object, a cost-effective Stige easily mountable connection between the high pressure lines and the fuel distribution pipe to create which enables permanent, reliable sealing.
Zur Lösung dieser Aufgabe dienen die im Kennzeichen des Patent anspruchs 1 angegebenen Merkmale.To solve this problem are the characteristics of the patent claims 1 specified characteristics.
In den Unteransprüchen sind noch förderliche Weiterbildungen der Erfindung angegeben. In the subclaims there are still further developments Invention specified.
Durch die erfindungsgemäßen Maßnahmen ist eine einfache Anschlußverbindung ohne Schweißnähte erreicht. Bei der Montage der Hochdruckleitung ist lediglich die Überwurfschraube in den zwischen Kraftstoffverteilungsrohr und Außenrohr liegenden Spannkörper einzuschrauben, wodurch das Endstück der Hochdruck leitung auf den Dichtsitz am Kraftstoffverteilungsrohr ab dichtend gepreßt wird.The measures according to the invention make it simple Connection reached without welds. During installation the high pressure line is only the union screw in the between the fuel distribution pipe and the outer pipe Screw in the clamping body, creating the end piece of high pressure line to the sealing seat on the fuel distribution pipe is pressed tightly.
Eine Anschlußverbindung für einen Abzweigverbinder in einer Hochdruckkraftstoffschiene ist aus der DE 40 30 484 A1 bekannt, bei der auch das Ende eines Abzweigrohres durch eine Spann mutter, die in einem Verbindungsstück verschraubt ist, gegen eine kegelige Widerlagerfläche abdichtend gepreßt ist. Bei dieser Anschlußverbindung sind Undichtigkeiten bei Auftreten von sehr hohen Drücken, z. B. weit über 1000 bar, nicht auszu schließen und somit ein Kraftstoffübertritt ins Freie nicht zu verhindern.A connection for a branch connector in one High-pressure fuel rail is known from DE 40 30 484 A1, in which also the end of a branch pipe by a clamp nut, which is screwed into a connector, against a conical abutment surface is pressed in a sealing manner. At this connection are leaks when very high pressures, e.g. B. well over 1000 bar, not out close and therefore does not prevent fuel from being transferred outdoors prevent.
Ferner ist eine Anschlußverbindung aus der FR 20 64 642 bekannt, bei der lediglich Anschlüsse für mehrere Druckleitungen an einem Verteilerrohr mittels eines Spannkörpers fixiert sind.Furthermore, a connection is known from FR 20 64 642, where only connections for several pressure lines on one Distribution pipe are fixed by means of a clamping body.
Der Gegenstand der Erfindung ist in der Zeichnung dargestellt und im folgenden anhand eines Ausführungsbeispieles näher erläu tert. Es zeigenThe object of the invention is shown in the drawing and explained in more detail below using an exemplary embodiment tert. Show it
Fig. 1 ein Kraftstoffverteilungsrohr mit angeschlossenen Hochdruckleitungen und Fig. 1 is a fuel distribution pipe with connected high pressure lines and
Fig. 2 die Ausführung nach der Linie II-II in Fig. 1. Fig. 2 shows the embodiment according to the line II-II in FIG. 1.
Ein mit magnetventilgesteuerten Injektoren einer luftverdichten den Brennkraftmaschine (nicht dargestellt) zusammenwirkender Hochdruckspeicher gemäß Fig. 1 besteht aus einem nahtlos gezoge nen Stahlrohr als Kraftstoffverteilungsrohr 1 (Common-Rail). An dem dickwandig ausgebildeten Kraftstoffverteilungsrohr 1 sind den Injektoren zugeordnete Hochdruckleitungen 2 angeschlossen, die am freien Ende eine Überwurfschraube 3 aufweisen.A solenoid valve controlled with an air injectors compress the internal combustion engine (not shown) co-operating high-pressure accumulator according to Fig. 1 consists of a seamless steel tube as gezoge NEN fuel distribution pipe 1 (common rail). High-pressure lines 2 , which are assigned to the injectors and have a union screw 3 at the free end, are connected to the thick-walled fuel distribution pipe 1 .
Das Kraftstoffverteilungsrohr 1 ist von einem zum großen Teil an diesem anliegenden dünnwandigen Außenrohr 4 umgeben. Zwischen Außenrohr 4 und dem zumindest gleich langen Kraftstoffverteilungsrohr 1 ist ein über die gesamte Länge des Außenrohres sich erstrecken der stangenförmiger Spannkörper 5 mit Aufnahmelöchern 6 für die Überwurfschrauben 3 der Hochdruckleitungen 2 vorgesehen. Der Spannkörper 5 kann lose zwischengelagert oder mit dem Außen rohr 4 fest verbunden sein, das in Höhe der mit Gewinde versehe nen Aufnahmelöcher 6 Durchtrittsöffnungen 7 für die Hochdruck leitungen 2 aufweist.The fuel distribution pipe 1 is surrounded by a thin-walled outer pipe 4 which abuts it for the most part. Between the outer tube 4 and the fuel distribution tube 1 , which is at least the same length, a rod-shaped clamping body 5 with receiving holes 6 for the cap screws 3 of the high-pressure lines 2 extends over the entire length of the outer tube. The clamping body 5 can be stored temporarily or fixedly connected to the outer tube 4 , which has 6 openings 7 for the high-pressure lines 2 at the level of the threaded receiving holes NEN.
Die Hochdruckleitung 2 ist am freien Ende zu einer Kegelform mit Außenbund 8 gestaucht, wobei die kegelförmige Sitzfläche 9 eine Dichtfläche und der Außenbund 8 eine Anlage- bzw. Abstützfläche für die leichtgängig auf der Hochdruckleitung 2 gelagerte Über wurfschraube 3 bildet. Somit ergibt sich eine axial feste Verbindung in Montagerichtung. Der Außenbund 8 ist durchmessermäßig kleiner als das Aufnahmeloch 6.The high-pressure line 2 is compressed at the free end into a conical shape with an outer collar 8 , the conical seat surface 9 forming a sealing surface and the outer collar 8 forming an abutment or support surface for the smoothly mounted throwing screw 3 on the high-pressure line 2 . This results in an axially fixed connection in the assembly direction. The outer collar 8 is smaller in diameter than the receiving hole 6 .
Mit 10 ist ein Druckraum im Kraftstoffverteilungsrohr 1 bezeich net, von dem im Rohr radial verlaufende Bohrungen 11 wegführen, die auslaßseitig einen der Sitzfläche 9 angepaßten Dichtkegelsitz 12 bilden.With 10 , a pressure chamber in the fuel distribution pipe 1 is referred to, lead away from the radially extending holes 11 in the tube, which form an adapted to the seat 9 conical seat 12 on the outlet side.
Das Kraftverteilungsrohr 1 ist an seinem einen Ende mit einem Verschlußstück 13 und an seinem anderen Ende mit einer Anschluß verbindung 14 für eine von einer Hochdruckpumpe ausgehenden Ver bindungsleitung (nicht dargestellt) versehen.The power distribution pipe 1 is provided at one end with a closure piece 13 and at its other end with a connection connection 14 for an outgoing connection line from a high pressure pump (not shown).
Bei der Montage der Anschlußverbindung wird die die Hochdruck leitung 2 mitnehmende Überwurfschraube 3 in das Aufnahmeloch des stangenförmigen Spannkörpers 5 geschraubt. Sobald die kegelför mige Sitzfläche 9 der Hochdruckleitung 2 auf dem Dichtkegelsitz 12 des Kraftstoffverteilungsrohres 1 zum Aufliegen kommt, wird durch weiteres Einschrauben der Überwurfschraube 3 das Außenrohr 4 gespannt und gleichzeitig das Endstück der Hochdruckleitung 2 auf den Dichtkegelsitz 12 abdichtend gepreßt.During assembly of the terminal connecting the high-pressure line is the 2 entraining cap screw 3 into the receiving hole of the rod-shaped clamping member 5 screwed. As soon as the conical seat surface 9 of the high-pressure line 2 comes to rest on the sealing cone seat 12 of the fuel distribution tube 1 , the outer tube 4 is tensioned by further screwing in the union screw 3 and, at the same time, the end piece of the high-pressure line 2 is pressed onto the sealing cone seat 12 in a sealing manner.
Claims (4)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4405432A DE4405432C1 (en) | 1994-02-21 | 1994-02-21 | High pressure accumulator as fuel distribution pipe, especially for an internal combustion engine with common-rail system |
IT95RM000035A IT1278460B1 (en) | 1994-02-21 | 1995-01-18 | HIGH PRESSURE ACCUMULATOR CAN BE USED AS A FUEL DISTRIBUTOR HOSE FOR COMMON-RAIL SYSTEMS. |
GB9502754A GB2286642B (en) | 1994-02-21 | 1995-02-13 | High-pressure fuel distribution pipe for a common-rail system |
FR9501928A FR2716499B1 (en) | 1994-02-21 | 1995-02-20 | High pressure accumulator for use as a fuel distribution tube for an internal combustion engine. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4405432A DE4405432C1 (en) | 1994-02-21 | 1994-02-21 | High pressure accumulator as fuel distribution pipe, especially for an internal combustion engine with common-rail system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4405432C1 true DE4405432C1 (en) | 1995-02-02 |
Family
ID=6510729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4405432A Expired - Fee Related DE4405432C1 (en) | 1994-02-21 | 1994-02-21 | High pressure accumulator as fuel distribution pipe, especially for an internal combustion engine with common-rail system |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE4405432C1 (en) |
FR (1) | FR2716499B1 (en) |
GB (1) | GB2286642B (en) |
IT (1) | IT1278460B1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998014700A1 (en) * | 1996-09-30 | 1998-04-09 | Robert Bosch Gmbh | High pressure fuel accumulator |
EP0866221A1 (en) * | 1997-03-18 | 1998-09-23 | Poppe & Potthoff GmbH & Co. | Fuel distributor for a diesel engine |
FR2762050A1 (en) * | 1997-04-10 | 1998-10-16 | Cideb | IC engine fuel distributor |
DE19729392A1 (en) * | 1997-07-09 | 1999-01-14 | Siemens Ag | Fuel storage device with seal |
WO2001053694A1 (en) * | 2000-01-15 | 2001-07-26 | Robert Bosch Gmbh | Method for creating a through opening in a high pressure fuel accumulator and device for carrying out said method |
DE10162203A1 (en) * | 2001-12-18 | 2003-07-10 | Bosch Gmbh Robert | High pressure fuel store has high pressure connections with holding elements fixed to store at two or more connecting points |
DE10020506B4 (en) * | 2000-04-26 | 2004-04-22 | Poppe & Potthoff Gmbh & Co | Device for supplying fuel to injection valves of an internal combustion engine |
WO2004079182A1 (en) * | 2003-03-04 | 2004-09-16 | Siemens Aktiengesellschaft | High pressure fuel accumulator |
EP1746282A1 (en) * | 2005-07-19 | 2007-01-24 | Siemens Aktiengesellschaft | Connector and system |
RU2636646C1 (en) * | 2016-08-12 | 2017-11-24 | Общество с ограниченной ответственностью Управляющая компания " Алтайский завод прецизионных изделий" (ООО УК "АЗПИ") | Fuel accumulator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007011868B3 (en) * | 2007-03-07 | 2008-09-04 | Mannesmann Präzisrohr GmbH | Fuel-tube method for producing a high-pressure storage tube as a composite tube up to pressures of 1,800 bar operates with fuel injection in common-rail systems in internal combustion engines |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2064642A5 (en) * | 1966-09-03 | 1971-07-23 | Kloeckner Humboldt Deutz Ag | |
DE4030484A1 (en) * | 1989-09-27 | 1991-04-18 | Usui Kokusai Sangyo Kk | CONNECTION DESIGN FOR A BRANCH CONNECTOR IN A HIGH PRESSURE FUEL RAIL |
US5201294A (en) * | 1991-02-27 | 1993-04-13 | Nippondenso Co., Ltd. | Common-rail fuel injection system and related method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0533833Y2 (en) * | 1987-06-29 | 1993-08-27 | ||
JPH0533832Y2 (en) * | 1987-06-29 | 1993-08-27 | ||
US5035221A (en) * | 1989-01-11 | 1991-07-30 | Martin Tiby M | High pressure electronic common-rail fuel injection system for diesel engines |
-
1994
- 1994-02-21 DE DE4405432A patent/DE4405432C1/en not_active Expired - Fee Related
-
1995
- 1995-01-18 IT IT95RM000035A patent/IT1278460B1/en active IP Right Grant
- 1995-02-13 GB GB9502754A patent/GB2286642B/en not_active Expired - Fee Related
- 1995-02-20 FR FR9501928A patent/FR2716499B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2064642A5 (en) * | 1966-09-03 | 1971-07-23 | Kloeckner Humboldt Deutz Ag | |
DE4030484A1 (en) * | 1989-09-27 | 1991-04-18 | Usui Kokusai Sangyo Kk | CONNECTION DESIGN FOR A BRANCH CONNECTOR IN A HIGH PRESSURE FUEL RAIL |
US5201294A (en) * | 1991-02-27 | 1993-04-13 | Nippondenso Co., Ltd. | Common-rail fuel injection system and related method |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998014700A1 (en) * | 1996-09-30 | 1998-04-09 | Robert Bosch Gmbh | High pressure fuel accumulator |
EP0866221A1 (en) * | 1997-03-18 | 1998-09-23 | Poppe & Potthoff GmbH & Co. | Fuel distributor for a diesel engine |
DE19744762A1 (en) * | 1997-03-18 | 1998-10-01 | Poppe & Potthoff Gmbh & Co | Injection device for a diesel engine |
FR2762050A1 (en) * | 1997-04-10 | 1998-10-16 | Cideb | IC engine fuel distributor |
DE19729392A1 (en) * | 1997-07-09 | 1999-01-14 | Siemens Ag | Fuel storage device with seal |
DE19729392C2 (en) * | 1997-07-09 | 1999-05-06 | Siemens Ag | Fuel storage with seal |
WO2001053694A1 (en) * | 2000-01-15 | 2001-07-26 | Robert Bosch Gmbh | Method for creating a through opening in a high pressure fuel accumulator and device for carrying out said method |
DE10020506B4 (en) * | 2000-04-26 | 2004-04-22 | Poppe & Potthoff Gmbh & Co | Device for supplying fuel to injection valves of an internal combustion engine |
DE10020506B8 (en) * | 2000-04-26 | 2004-07-22 | Poppe & Potthoff Gmbh & Co | Device for supplying fuel to injection valves of an internal combustion engine |
DE10162203A1 (en) * | 2001-12-18 | 2003-07-10 | Bosch Gmbh Robert | High pressure fuel store has high pressure connections with holding elements fixed to store at two or more connecting points |
WO2004079182A1 (en) * | 2003-03-04 | 2004-09-16 | Siemens Aktiengesellschaft | High pressure fuel accumulator |
US7040289B2 (en) | 2003-03-04 | 2006-05-09 | Siemens Aktiengesellschaft | High pressure fuel accumulator |
US7182069B2 (en) | 2003-03-04 | 2007-02-27 | Siemens Aktiengesellschaft | High pressure fuel accumulator |
CN100416088C (en) * | 2003-03-04 | 2008-09-03 | 西门子公司 | High pressure fuel accumulator |
EP1746282A1 (en) * | 2005-07-19 | 2007-01-24 | Siemens Aktiengesellschaft | Connector and system |
RU2636646C1 (en) * | 2016-08-12 | 2017-11-24 | Общество с ограниченной ответственностью Управляющая компания " Алтайский завод прецизионных изделий" (ООО УК "АЗПИ") | Fuel accumulator |
Also Published As
Publication number | Publication date |
---|---|
GB2286642A (en) | 1995-08-23 |
IT1278460B1 (en) | 1997-11-24 |
GB2286642B (en) | 1997-04-16 |
FR2716499B1 (en) | 1997-06-06 |
GB9502754D0 (en) | 1995-03-29 |
ITRM950035A0 (en) | 1995-01-18 |
FR2716499A1 (en) | 1995-08-25 |
ITRM950035A1 (en) | 1996-07-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART, |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |