EP1116877A2 - Kraftstoffsystem einer Brennkraftmaschine - Google Patents
Kraftstoffsystem einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP1116877A2 EP1116877A2 EP01100494A EP01100494A EP1116877A2 EP 1116877 A2 EP1116877 A2 EP 1116877A2 EP 01100494 A EP01100494 A EP 01100494A EP 01100494 A EP01100494 A EP 01100494A EP 1116877 A2 EP1116877 A2 EP 1116877A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- fuel line
- line connection
- pump
- individual
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- 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
Definitions
- the invention relates to a fuel system of an internal combustion engine with single injection pumps, assigned to the individual cylinders in the Crankcase and / or attachments are arranged and each have a first and a second fuel line connection, the via fuel supplies in the pump cylinder diametrically opposite open into the high pressure pump chamber and the one pipe connection independent of the fuel supply are in flow connection with each other, with each individual injection pump at least one fuel line connection via a Single injection pumps of a cylinder line connecting fuel line connected is.
- Such fuel systems with single injection pumps are general known and are available in different versions on auto-igniting Internal combustion engines installed. They always require higher fuel delivery pressures of these single injection pumps Measures to ensure ongoing operational security such single injection pumps and the fuel system as a whole. So it is necessary to have the fuel supply in the pump cylinder from exactly opposite sides transverse to the direction of movement of the pump plunger open into the high-pressure pump chamber to let. As a result, an even load, in particular of the Pump plunger, for example during the control process. Furthermore, the two opening into the high-pressure pump chamber Fuel supply through appropriate wiring a continuous flow during operation of the internal combustion engine reached so that an undesirable heating of the fuel, that occurs during operation of the internal combustion engine avoided becomes.
- the invention has for its object such a fuel system to improve.
- the second fuel line connection via a further line connection with a third Fuel line connector is connected.
- These third fuel line connections a row of cylinders are via a second fuel line connected with each other. This is done via the first fuel line from the fuel tank to the individual injection pumps led while on the second fuel line (excess and exhausted) fuel is discharged.
- This training is with little Effort a significantly improved connection option and the laying of the fuel lines.
- the first and the third Fuel line connection side by side on the single injection pump or coaxially with each other at the first fuel line connection to arrange.
- the first and the third fuel line connections of the individual injection pumps either in Series connected or independently via an assigned Fuel line connected together.
- the individual Fuel line connections close to each other or coaxial are arranged to each other, the fuel lines can be easier assembled and possibly manufactured as a complete unit.
- crankcase 1 is a multi-cylinder Shown ignition engine, wherein in corresponding to the number of cylinders in the internal combustion engine Recesses of the crankcase 1 single injection pumps 2 used are essentially only with the high pressure line connection and the fuel line connections 7a, 7b, 7c from the Protrude crankcase 1.
- the pump plungers of these single injection pumps 2 are from a camshaft, not shown driven, which is inserted into a recess 3 of the crankcase 1 is.
- the high pressure line connections are via short injection lines 4 connected to injectors 5, which in a continuous Cylinder head 6 in turn assigned to the individual Cylinders of the internal combustion engine are arranged.
- Each individual injection pump 2 has coaxially arranged one another first and third fuel line connections 7a, 7c and diametrically opposite a second fuel line connection 7b (Fig. 2) on.
- the second fuel line connection 7b is with a cover closed while the first and third fuel line connection 7a, 7c each independently of one another via connecting pieces 8a, 8b and a common hollow screw 9 with one (in FIG. 1 partially shown) fuel line 11a, 11b is connected.
- Fig. 2 is a coaxial fuel line connection shown in Fig. 1 7a, 7c shown in detail (the top one according to FIG. 2b).
- the Connectors 8a, 8b are inserted via a hollow screw 9 of sealing rings 10a, 10b, 10c with the single injection pump 2 or their housing screwed.
- the connector 8a has one Pipe section 12a on which the fuel line 11a (Fig. 2b) is pushed and is secured.
- the connector 7b points accordingly two pipe sections 12b, on which the fuel line sections 11b are attached.
- the fuel comes from a fuel tank from a pre-feed pump via the fuel line 11a, the pipe section 12a, and the connector 8a in the central Longitudinal bore 13 of the hollow screw 9 passed and arrives from there via a fuel feed 14a into the high-pressure pump chamber 15 the single injection pump 2. From this high-pressure pump chamber 15 the fuel is controlled by the pump plunger via the injection line 4 and the injection valve 5 in the combustion chamber of the internal combustion engine promoted. At the same time is the central longitudinal bore 13 via a line connection 16a, 16b in the pump housing or the pump cylinder with the diametrically opposite the first and third fuel line connections 7a, 7c second fuel line connection 7b connected.
- This second Fuel line connection 7b is still via a fuel supply 14b with the high pressure pump chamber 15 and via line connections 16c, 16d with a longitudinal groove 17 (see also FIG. 2a) on the Banjo bolt 9 connected. Via this longitudinal groove 17 the Fuel into the connector 8b and further into the fuel line 11b and is ultimately returned to the fuel tank via this guided.
- first and third fuel line connections 7a, 7c are over corresponding banjo bolts 9 screwed to the adjacent connecting pieces 8a, 8b, on which in turn the fuel lines 11a, 11b (Fig. 3a) are attached.
- the first fuel line connection 7a is over the fuel supply 14a with the high pressure pump chamber 15 and from this via the fuel feed 14b to the second fuel line connection 7b connected.
- there are also line connections here 16a, 16b present the first fuel line connection 7a independent of the high pressure pump chamber 15 Connect to the second fuel line connector 7b.
- the second fuel line connection 7b carries out a line connection 16c directly to the fuel line connection 7c, which - as said - is connected to the fuel line 11b.
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
- Fig. 1:
- in einer Teilansicht eine in das Kurbelgehäuse einer selbstzündenden Brennkraftmaschine eingebaute Einzeleinspritzpumpe mit koaxial angeordnetem ersten und dritten Kraftstoffleitungsanschluss,
- Fig. 2:
- einen schematischen Schnitt durch eine Einzeleinspritzpumpe nach Fig. 1,
- Fig. 2a:
- einen Querschnitt 2-2 durch die Hohlschraube ,
- Fig. 2b:
- das Kraftstoffleitungsschema für Fig. 1 bzw. 2,
- Fig. 3:
- einen Schnitt durch die Einzeleinspritzpumpe mit nebeneinanderliegenden ersten und dritten Kraftstoffleitungsanschlüssen und
- Fig. 3a:
- das Kraftstoffleitungsschema gemäß Fig. 3.
Claims (5)
- Kraftstoffsystem einer Brennkraftmaschine mit Einzeleinspritzpumpen, die einzelnen Zylindern zugeordnet im Kurbelgehäuse und/ oder Anbauteilen angeordnet sind und die je einen ersten und zweiten Kraftstoffleitungsanschluss aufweisen, die über Kraftstoffzuführungen in dem Pumpenzylinder diametral gegenüberliegend in den Pumpenhochdruckraum münden und die über eine von den Kraftstoffzuführungen unabhängige Leitungsverbindung direkt miteinander in Strömungsverbindung stehen, wobei je Einzeleinspritzpumpe zumindest ein Kraftstoffleitungsanschluss über eine die Einzeleinspritzpumpen einer Zylinderreihe verbindende Kraftstoffleitung verbunden
ist,
dadurch gekennzeichnet, dass der zweite Kraftstoffleitungsanschluss (7b) über eine weitere Leitungsverbindung (16b, 16c) mit einem dritten Kraftstoffleitungsanschluss (7c) verbunden ist. - Kraftstoffsystem nach Anspruch 1,
dadurch gekennzeichnet, dass der erste und der dritte Kraftstoffleitungsanschluss (7a, 7c) nebeneinanderliegend an der Einzeleinspritzpumpe (2) angeordnet sind. - Kraftstoffsystem nach Anspruch 1,
dadurch gekennzeichnet, dass der dritte Kraftstoffleitungsanschluss (7c) koaxial zu dem ersten Kraftstoffleitungsanschluss (7a) angeordnet ist. - Kraftstoffsystem nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass die ersten und zweiten Kraftstoffleitungsanschlüsse (7a, 7c) der einzelnen Einzeleinspritzpumpen (2) über jeweils eine zugeordnete Kraftstoffleitung (14a, 14b) unabhängig voneinander verbunden sind. - Kraftstoffsystem nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die ersten und dritten Kraftstoffleitungsanschlüsse (7a, 7c) der einzelnen Einzeleinspritzpumpen (2) über Kraftstoffleitungsabschnitte in Reihe geschaltet sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10000876A DE10000876A1 (de) | 2000-01-12 | 2000-01-12 | Kraftstoffsystem einer Brennkraftmaschine |
| DE10000876 | 2000-01-12 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1116877A2 true EP1116877A2 (de) | 2001-07-18 |
| EP1116877A3 EP1116877A3 (de) | 2003-02-05 |
| EP1116877B1 EP1116877B1 (de) | 2004-08-18 |
Family
ID=7627213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01100494A Expired - Lifetime EP1116877B1 (de) | 2000-01-12 | 2001-01-09 | Kraftstoffsystem einer Brennkraftmaschine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1116877B1 (de) |
| DE (2) | DE10000876A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1496244A1 (de) * | 2003-07-10 | 2005-01-12 | MAN B&W Diesel AG | Ein Motor mit einer Kraftstoffpumpe mit einer Spülungsfähigkeit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10201353B4 (de) * | 2002-01-16 | 2004-04-08 | Daimlerchrysler Ag | Hochdruckanschluss für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB402175A (en) * | 1932-07-02 | 1933-11-30 | John Robson Shipley Ltd | Improvements in feed pumps for internal combustion engines |
| GB412243A (en) * | 1932-09-23 | 1934-06-25 | Simms Motor Units Ltd | Improvements in or relating to liquid fuel injection pumps for diesel or like solid injection internal combustion engines |
| GB443691A (en) * | 1934-09-20 | 1936-03-04 | Rudolf L Orange | Improvements in fuel injection pumps |
| DE768143C (de) * | 1938-05-06 | 1957-09-12 | Daimler Benz Ag | Einspritzpumpe, insbesondere fuer Brennkraftmaschinen |
| DE762581C (de) * | 1943-06-27 | 1952-08-14 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage fuer Brennkraftmaschinen |
| US2573344A (en) * | 1946-09-13 | 1951-10-30 | Everett P Larsh | Fuel injector |
| DE3509536A1 (de) * | 1984-05-09 | 1985-11-14 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzpumpe fuer brennkraftmaschinen |
| FI93985C (fi) * | 1991-04-17 | 1995-06-26 | Waertsilae Diesel Int | Polttoaineen ruiskutuspumpun asennus- ja kytkentäjärjestely |
| US5261608A (en) * | 1993-01-08 | 1993-11-16 | Avco Corporation | Multi-line fluid supply manifold assembly |
-
2000
- 2000-01-12 DE DE10000876A patent/DE10000876A1/de not_active Withdrawn
-
2001
- 2001-01-09 DE DE50103266T patent/DE50103266D1/de not_active Expired - Fee Related
- 2001-01-09 EP EP01100494A patent/EP1116877B1/de not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1496244A1 (de) * | 2003-07-10 | 2005-01-12 | MAN B&W Diesel AG | Ein Motor mit einer Kraftstoffpumpe mit einer Spülungsfähigkeit |
| CN100406715C (zh) * | 2003-07-10 | 2008-07-30 | 曼·B及W柴油机公开股份有限公司 | 发动机 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1116877A3 (de) | 2003-02-05 |
| DE50103266D1 (de) | 2004-09-23 |
| DE10000876A1 (de) | 2001-07-19 |
| EP1116877B1 (de) | 2004-08-18 |
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