EP0989296A2 - Einrichtung zum Fördern von Kraftstoff zu einem Verbrennungsmotor - Google Patents
Einrichtung zum Fördern von Kraftstoff zu einem Verbrennungsmotor Download PDFInfo
- Publication number
- EP0989296A2 EP0989296A2 EP99116814A EP99116814A EP0989296A2 EP 0989296 A2 EP0989296 A2 EP 0989296A2 EP 99116814 A EP99116814 A EP 99116814A EP 99116814 A EP99116814 A EP 99116814A EP 0989296 A2 EP0989296 A2 EP 0989296A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- pump
- feed pump
- storage pot
- feed
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
Definitions
- the invention relates to a device for delivering fuel to one Internal combustion engine with the features mentioned in the preamble of the main claim.
- a generic device for is known from the document DE 195 13 822 A1 Conveying fuel from a fuel tank to an internal combustion engine Motor vehicle.
- the facility consists essentially of a Internal combustion powered feed pump, which is designed as a gear pump and is connected to the fuel tank via a delivery line. This Gear pump delivers the fuel to the injection system of the internal combustion engine.
- the feed pump forms a structural unit together with an air-conveying pump, whose suction side to generate a vacuum with a brake booster Motor vehicle is connected.
- the fuel supply is also previously known from document DE 196 12 605 A1 an internal combustion engine by means of a fuel-flushed and in the fuel tank to effect housed electric motor-driven feed pump.
- the feed pump is located in a storage pot also located in the fuel tank Active connection. There is a separate one in the lower area of this storage pot Liquid jet pump, via which the storage pot is filled and regulated becomes.
- a second additional pump is provided for the fuel supply described above Securing funding after the fuel tank runs empty is necessary, too deviates from the usual pump types in motor vehicle construction.
- the invention has for its object a generic pump with regard to improve their suction behavior after emptying the fuel tank while doing so to achieve self-venting.
- the object of the invention is achieved by the in the characterizing part of Features mentioned claims.
- the advantages of the invention are in the optimal constructive design of the pump unit with a pressure side Storage pot. Even after the fuel tank is empty, it is quick Fuel delivery with simultaneous ventilation, so a quick engine start is possible.
- the features of the subclaims are related to the description their effects explained.
- FIG. 1 essential parts of the fuel supply of an internal combustion engine are shown schematically.
- a feed pump 1 driven by the internal combustion engine sucks fuel from a fuel tank 5 and initially fills a storage pot 3, which is also vented at the same time.
- a check valve 7 which opens in the direction of the fuel pump 1 and prevents the sucked-in fuel from falling back into the fuel tank 5.
- One or more fuel pressure lines 2a are connected to the storage pot 3 above the feed pump 1 (FIGS. 2 and 3), they feed an injection pump or pump-nozzle elements with fuel (neither of which is shown). The fuel that is not supplied to the internal combustion engine from the injection pump or the pump-nozzle elements flows back into the fuel tank 5 via a return line 8 and a pre-pressure valve 9.
- the storage pot 3 axially covers the area of the feed pump 1 and part of the adjacent sealing limits (Fig. 2 and 3).
- the ones that form the sealing limits, for example seals 10 consisting of round rings are located in the area of the storage pot 3 in constant contact with fuel over a large part of its extent.
- A is preferably at the highest point of the storage pot 3 Pressure relief valve 11 connected. This pressure relief valve 11 opens at higher pressure than the pre-pressure valve 9. The return of fuel takes place via the Pressure relief valve 11 and a return line 12 to the suction side of the feed pump 1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Die Aufgabe der Erfindung besteht darin, eine gattungsgemäße Kraftstofförderpumpe hinsichtlich ihres Saugverhaltens nach dem Leerfahren des Kraftstomanks zu verbessern.
Description
- Fig. 1
- das Schema einer Kraftstoffversorgung eines Verbrennungsmotors,
- Fig. 2
- eine schematisch dargestellte Ausführungsform der Baueinheit Förderpumpe - Speichertopf,
- Fig. 3
- das Schema des Speichertopfes als Schnittdarstellung nach der Linie A-A in Fig. 2.
Eine oder mehrere Kraftstoffdruckleitungen 2a sind oberhalb der Förderpumpe 1 am Speichertopf 3 angeschlossen (Fig. 2 und 3), sie speisen eine Einspritzpumpe oder Pumpe-Düse-Elemente mit Kraftstoff (beides nicht dargestellt). Der nicht dem Verbrennungsmotor von der Einspritzpumpe oder den Pumpe-Düse-Elementen zugeführte Kraftstoff fließt über eine Rücklaufleitung 8 und ein Vordruckventil 9 in den Kraftstofftank 5 zurück.
Bei Wiederinbetriebnahme der Förderpumpe 1, die vorzugsweise als Zahnrad-, Sperrflügel- oder Flügelzellenpumpe ausgeführt ist, erfolgt sofort, ohne Entlüften von Außen, eine störungsfreie Kraftstofförderung zum Verbrennungsmotor, da die Pumpenräume bereits gefüllt sind.
Claims (5)
- Einrichtung zum Fördern von Kraftstoff zu einem Verbrennungsmotor mit einer Förderpumpe zum Speisen einer Einspritzanlage, die als vorzugsweise direkt aus dem Kraftstofftank fördernde und vom Verbrennungsmotor angetriebene Zahnrad- oder Flügelzellenpumpe ausgeführt ist,
dadurch gekennzeichnet,
daß der Förderpumpe (1) druckseitig ein Speichertopf (3) nachgeschaltet ist, wobei eine Kraftstoffzulaufleitung (2a) bzw. Kraftstoffzulaufleitungen zur Einspritzanlage oberhalb der Förderpumpe (1) am Speichertopf (3) angeschlossen ist bzw. sind. - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Speichertopf (3) axial den Bereich der Förderpumpe (1) und einen Teil der anliegenden Dichtgrenzen überdeckt. - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß ein Druckbegrenzungsventil (11) vorzugsweise an der höchsten Stelle des Speichertopfes (3) angeschlossen ist. - Einrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß das Druckbegrenzungsventil (11) über eine Kraftstoffrücklaufleitung (12) mit der Saugseite der Förderpumpe (1) verbunden ist. - Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß in der Saugleitung (6) der Förderpumpe (1) ein den Rücklauf von angesaugtem Kraftstoff verhinderndes Rückschlagventil (7) angeordnet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843827A DE19843827A1 (de) | 1998-09-24 | 1998-09-24 | Einrichtung zum Fördern von Kraftstoff zu einem Verbrennungsmotor |
| DE19843827 | 1998-09-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0989296A2 true EP0989296A2 (de) | 2000-03-29 |
| EP0989296A3 EP0989296A3 (de) | 2000-10-25 |
| EP0989296B1 EP0989296B1 (de) | 2003-08-20 |
Family
ID=7882106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99116814A Expired - Lifetime EP0989296B1 (de) | 1998-09-24 | 1999-09-01 | Einrichtung zum Fördern von Kraftstoff zu einem Verbrennungsmotor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0989296B1 (de) |
| AT (1) | ATE247774T1 (de) |
| DE (2) | DE19843827A1 (de) |
| ES (1) | ES2207095T3 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10026373A1 (de) * | 2000-05-27 | 2001-11-29 | Volkswagen Ag | Hochdruck-Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1474565A (en) * | 1974-11-05 | 1977-05-25 | Gen Motors France | Internal combustion engine fuel pumps |
| DE2823734A1 (de) * | 1978-05-31 | 1979-12-06 | Bosch Gmbh Robert | Kraftstoff-foerderaggregat |
| DE3141080C2 (de) * | 1981-10-16 | 1984-04-12 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | "Selbstansaugende Kreiselpumpe" |
| DE3509374A1 (de) * | 1985-03-15 | 1986-09-25 | Robert Bosch Gmbh, 7000 Stuttgart | Einrichtung zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges |
| DE3903313A1 (de) * | 1989-02-04 | 1990-08-09 | Bosch Gmbh Robert | Speicherkraftstoffeinspritzvorrichtung |
| DE4313852B4 (de) * | 1993-04-28 | 2004-11-25 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
| US5363827A (en) * | 1993-10-14 | 1994-11-15 | Carter Automotive Company, Inc. | Fuel pump assembly |
| DE19549507C2 (de) * | 1995-04-12 | 2002-06-06 | Bosch Gmbh Robert | Einrichtung zum Fördern von Kraftstoff aus einem Vorratstank zu einer Brennkraftmaschine eines Kraftfahrzeuges |
| DE19612605A1 (de) * | 1996-03-29 | 1997-10-02 | Bosch Gmbh Robert | Rückströmsperre in einem eine Kraftstoffpumpe umgebenden Speichertopf |
-
1998
- 1998-09-24 DE DE19843827A patent/DE19843827A1/de not_active Withdrawn
-
1999
- 1999-09-01 AT AT99116814T patent/ATE247774T1/de not_active IP Right Cessation
- 1999-09-01 DE DE59906653T patent/DE59906653D1/de not_active Expired - Lifetime
- 1999-09-01 ES ES99116814T patent/ES2207095T3/es not_active Expired - Lifetime
- 1999-09-01 EP EP99116814A patent/EP0989296B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2207095T3 (es) | 2004-05-16 |
| ATE247774T1 (de) | 2003-09-15 |
| DE59906653D1 (de) | 2003-09-25 |
| EP0989296A3 (de) | 2000-10-25 |
| EP0989296B1 (de) | 2003-08-20 |
| DE19843827A1 (de) | 2000-03-30 |
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