EP0921303A2 - Common Rail Einspritzsystem für Brennkraftmaschinen - Google Patents
Common Rail Einspritzsystem für Brennkraftmaschinen Download PDFInfo
- Publication number
- EP0921303A2 EP0921303A2 EP98119363A EP98119363A EP0921303A2 EP 0921303 A2 EP0921303 A2 EP 0921303A2 EP 98119363 A EP98119363 A EP 98119363A EP 98119363 A EP98119363 A EP 98119363A EP 0921303 A2 EP0921303 A2 EP 0921303A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- claw
- injector
- common rail
- memory
- injection system
- 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.)
- Granted
Links
Images
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
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or 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
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
-
- 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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the invention relates to a common rail injection system according to the generic term of claim 1.
- Common rail injection systems usually consist of a pump, an accumulator and at least one injector per cylinder.
- the memory and the injectors are connected to each other via injection lines.
- the memory must be special Elements are attached to the cylinder head and the injection lines represent a special assembly effort.
- the invention has for its object the structural effort for the connection to minimize memory and injectors.
- the direct connection of the accumulator to the claw eliminates the injection lines. This saves assembly effort and cable breaks are avoided.
- the memory does not need a separate attachment to the Internal combustion engine.
- the flow restrictor prevents fuel from escaping in the event of a major leakage.
- the injection system according to the invention is made from a pump, not shown here, a memory 1 and injectors, of which only one injector 2 is shown here.
- the memory 1 is connected directly to a claw 3, which is attached to the cylinder head 5 by means of a screw 4.
- a flow limiter 6 between memory 1 and Claw 3 can be interposed.
- the claw 3 has an integrated bore 7 for guiding the fuel.
- a pressure tube 8 is clamped with a bore which Establishes connection from bore 7 to injector 2. Sealing the free Ends of the pressure pipe 8 against the injector 2 on the one hand and against the claw 3 on the other takes place through a crowned surface of the ends of the pressure tube 8 which are pressed against conical sealing seats in injector 2 and claw 3.
- the crowned surface of the free ends of the pressure tube 8 can this small Execute angular deviations in the direction of the axis of the memory 1 if by thermal expansion of the memory 1 cooled by the fuel compared to the Cylinder head 5 length differences occur.
- a flow limiter 6 is provided to ensure greater leakage losses which is formed from an adapter sleeve 9, which with the memory 1 and Claw 3 by means of a left-hand thread 10a or a right-hand thread 10b or vice versa connected is.
- the Spring force acts against the flow direction. Enough in normal operating condition the force of the spring and the back pressure from the injector 1 to the piston 12th to keep against the fuel pressure in the drawn starting position.
- Of the Fuel passes through the holes in the piston 12 and the hole 7, as well as the pressure pipe 8 to the injector 1.
- the flow of fuel increases a larger leak significantly compared to full load delivery, so includes Valve seat 13 due to the increased pressure differential against the spring force and locks for the corresponding injector the flow.
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 (2)
- Common Rail Einspritzsystem für Brennkraftmaschinen, bestehend aus einer Pumpe, einem Speicher und mindestens einem Injektor je Zylinder wobei der Speicher über Verbindungselemente mit den Injektoren verbunden ist, dadurch gekennzeichnet, daß als Verbindungselement eine mit dem Zylinderkopf (5) verschraubte Pratze (3) mit integrierter Bohrung (7) und ein Druckrohr (8) dient, welches zwischen Pratze (3) und Injektor (2) verspannt ist und daß der Speicher (1) direkt an die Pratze (3) angeschlossen ist.
- Common Rail nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Pratze (3) und Speicher (1) je Injektor (2) ein Durchflußbegrenzer (6) angeordhet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19754132A DE19754132B4 (de) | 1997-12-05 | 1997-12-05 | Common Rail Einspritzsystem für Brennkraftmaschinen |
DE19754132 | 1997-12-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0921303A2 true EP0921303A2 (de) | 1999-06-09 |
EP0921303A3 EP0921303A3 (de) | 2003-01-02 |
EP0921303B1 EP0921303B1 (de) | 2005-12-28 |
Family
ID=7850946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980119363 Expired - Lifetime EP0921303B1 (de) | 1997-12-05 | 1998-10-14 | Common Rail Einspritzsystem für Brennkraftmaschinen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0921303B1 (de) |
DE (2) | DE19754132B4 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1108886A3 (de) * | 1999-12-15 | 2003-11-26 | Man Nutzfahrzeuge Ag | Common Rail Einspritzsystem |
EP1793121A1 (de) * | 2002-07-01 | 2007-06-06 | Mitsubishi Heavy Industries, Ltd. | Kraftstoffeinspritzventil und Dieselmotor damit |
WO2009033304A1 (de) | 2007-09-13 | 2009-03-19 | Ganser-Hydromag Ag | Brennstoffeinspritzvorrichtung |
EP2060776A1 (de) * | 2007-11-13 | 2009-05-20 | Delphi Technologies, Inc. | Brennstofflanze |
DE102009020867A1 (de) * | 2009-05-12 | 2010-11-18 | Bayerische Motoren Werke Aktiengesellschaft | Brennkraftmaschine mit einem Kraftstoffinjektor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10006658B4 (de) * | 2000-02-15 | 2004-08-26 | Siemens Ag | Einspritzanlage |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543506A1 (de) | 1995-11-22 | 1997-05-28 | Man Nutzfahrzeuge Ag | Anschluß einer Einspritzleitung an ein Druckrohr eines Einspritzventils |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3728576A1 (de) * | 1987-08-27 | 1989-03-09 | Opel Adam Ag | Kraftstoffeinspritzanlage |
DE4318434A1 (de) * | 1993-06-03 | 1994-12-08 | Opel Adam Ag | Haltevorrichtung für ein Kraftstoffeinspritzventil eines Dieselmotors |
JP3298262B2 (ja) * | 1993-10-13 | 2002-07-02 | 株式会社デンソー | 蓄圧式燃料噴射装置 |
DE4340311C1 (de) * | 1993-11-26 | 1994-12-15 | Daimler Benz Ag | Verfahren zur Kraftstoffeinspritzung für eine Brennkraftmaschine mit Hochdruckeinspritzung |
DE9410232U1 (de) * | 1994-06-27 | 1995-11-02 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
DE29502829U1 (de) * | 1995-02-21 | 1996-06-20 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
JPH08261105A (ja) * | 1995-03-22 | 1996-10-08 | Mitsubishi Motors Corp | 内燃機関用燃料噴射装置 |
JP3371620B2 (ja) * | 1995-05-29 | 2003-01-27 | いすゞ自動車株式会社 | コモンレール式燃料噴射装置 |
DE19548610A1 (de) * | 1995-12-23 | 1997-06-26 | Bosch Gmbh Robert | Kraftstoffeinspritzeinirchtung für Brennkraftmaschinen |
DE19601496C2 (de) * | 1996-01-17 | 1998-07-30 | Man Nutzfahrzeuge Ag | Anschluß einer Einspritzleitung an ein Druckrohr eines Einspritzventils |
-
1997
- 1997-12-05 DE DE19754132A patent/DE19754132B4/de not_active Expired - Fee Related
-
1998
- 1998-10-14 EP EP19980119363 patent/EP0921303B1/de not_active Expired - Lifetime
- 1998-10-14 DE DE59813313T patent/DE59813313D1/de not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543506A1 (de) | 1995-11-22 | 1997-05-28 | Man Nutzfahrzeuge Ag | Anschluß einer Einspritzleitung an ein Druckrohr eines Einspritzventils |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1108886A3 (de) * | 1999-12-15 | 2003-11-26 | Man Nutzfahrzeuge Ag | Common Rail Einspritzsystem |
EP1793121A1 (de) * | 2002-07-01 | 2007-06-06 | Mitsubishi Heavy Industries, Ltd. | Kraftstoffeinspritzventil und Dieselmotor damit |
WO2009033304A1 (de) | 2007-09-13 | 2009-03-19 | Ganser-Hydromag Ag | Brennstoffeinspritzvorrichtung |
US8336524B2 (en) | 2007-09-13 | 2012-12-25 | Ganser-Hydromag Ag | Fuel injection device |
EP2060776A1 (de) * | 2007-11-13 | 2009-05-20 | Delphi Technologies, Inc. | Brennstofflanze |
JP2009138738A (ja) * | 2007-11-13 | 2009-06-25 | Delphi Technologies Inc | 燃料ランス及びアッセンブリ |
EP2060775A3 (de) * | 2007-11-13 | 2009-11-11 | Delphi Technologies, Inc. | Brennstofflanze und Anordnung |
US7958870B2 (en) | 2007-11-13 | 2011-06-14 | Delphi Technologies Holdings S.arl | Fuel lance and assembly |
DE102009020867A1 (de) * | 2009-05-12 | 2010-11-18 | Bayerische Motoren Werke Aktiengesellschaft | Brennkraftmaschine mit einem Kraftstoffinjektor |
DE102009020867B4 (de) | 2009-05-12 | 2022-01-27 | Bayerische Motoren Werke Aktiengesellschaft | Brennkraftmaschine mit einem Kraftstoffinjektor |
Also Published As
Publication number | Publication date |
---|---|
EP0921303A3 (de) | 2003-01-02 |
DE59813313D1 (de) | 2006-02-02 |
DE19754132A1 (de) | 1999-06-10 |
EP0921303B1 (de) | 2005-12-28 |
DE19754132B4 (de) | 2005-06-23 |
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