EP1977105B1 - Fuel delivery device - Google Patents
Fuel delivery device Download PDFInfo
- Publication number
- EP1977105B1 EP1977105B1 EP06841404.4A EP06841404A EP1977105B1 EP 1977105 B1 EP1977105 B1 EP 1977105B1 EP 06841404 A EP06841404 A EP 06841404A EP 1977105 B1 EP1977105 B1 EP 1977105B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- pressure sensor
- delivery device
- fuel delivery
- internal combustion
- 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.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims description 66
- 239000002828 fuel tank Substances 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3082—Control of electrical fuel pumps
-
- 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
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
- F02M2037/085—Electric circuits therefor
- F02M2037/087—Controlling fuel pressure valve
Definitions
- the pressure sensor is arranged away from the internal combustion engine. Therefore, vibrations of the internal combustion engine are not transmitted to the pressure sensor. Furthermore, high temperatures generated by the internal combustion engine are not transmitted to the pressure sensor thanks to the invention.
- the pressure sensor is therefore charged only with the maximum temperature of 60 ° of the fuel in the flow line. This makes it possible to use a particularly cost-effective pressure sensor.
- the fuel delivery device according to the invention is thus particularly cost-effective.
- a faulty measurement of the pressure sensor by a caused by the fine filter and / or a check valve pressure loss can be easily avoided according to another advantageous embodiment of the invention, when the pressure sensor is located immediately in front of a leading away from the flange connection of the flow line.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
Die Erfindung betrifft eine Kraftstofffördereinrichtung zur Versorgung einer Brennkraftmaschine eines Kraftfahrzeuges mit Kraftstoff aus einem Kraftstoffbehälter, mit einer in dem Kraftstoffbehälter angeordneten, elektromotorisch angetriebenen Kraftstoffpumpe, mit einer an der Kraftstoffpumpe angeschlossenen und zu der Brennkraftmaschine zu führenden Vorlaufleitung und mit einem Drucksensor zur Ermittlung des Drucks des zu der Brennkraftmaschine geförderten Kraftstoffs.The invention relates to a fuel delivery device for supplying an internal combustion engine of a motor vehicle with fuel from a fuel tank, with an arranged in the fuel tank, driven by an electric motor fuel pump, connected to the fuel pump and leading to the internal combustion engine supply line and with a pressure sensor for determining the pressure of to the internal combustion engine funded fuel.
Solche, einen Drucksensor aufweisenden Kraftstofffördereinrichtungen fördern Kraftstoff in Abhängigkeit von dem Bedarf der Brennkraftmaschine und sind aus der Praxis bekannt. Ein Beispiel einer solchen Vorrichtung ist in
Der Erfindung liegt das Problem zugrunde, eine Kraftstofffördereinrichtung der eingangs genannten Art so weiterzubilden, dass sie besonders kostengünstig zu fertigen ist.The invention is based on the problem, a fuel delivery device of the type mentioned in such a way that it is particularly inexpensive to manufacture.
Dieses Problem wird erfindungsgemäß dadurch gelöst, dass der Drucksensor an einem von der Brennkraftmaschine entfernten Abschnitt der Vorlaufleitung angeschlossen ist.This problem is inventively achieved in that the pressure sensor is connected to a remote from the engine section of the flow line.
Durch diese Gestaltung ist der Drucksensor von der Brennkraftmaschine entfernt angeordnet. Daher werden Vibrationen der Brennkraftmaschine nicht auf den Drucksensor übertragen.. Weiterhin werden hohe, von der Brennkräftmaschine erzeugte Temperaturen dank der Erfindung nicht auf den Drucksensor übertragen. Der Drucksensor wird daher nur mit der Temperatur von maximal 60° des Kraftstoffs in der Vorlaufleitung belastet. Hierdurch lässt sich ein besonders kostengünstiger Drucksensor einsetzen. Die erfindungsgemäße Kraftstofffördereinrichtung gestaltet sich hierdurch besonders kostengünstig.By this configuration, the pressure sensor is arranged away from the internal combustion engine. Therefore, vibrations of the internal combustion engine are not transmitted to the pressure sensor. Furthermore, high temperatures generated by the internal combustion engine are not transmitted to the pressure sensor thanks to the invention. The pressure sensor is therefore charged only with the maximum temperature of 60 ° of the fuel in the flow line. This makes it possible to use a particularly cost-effective pressure sensor. The fuel delivery device according to the invention is thus particularly cost-effective.
Eine mögliche Entweichung von Kraftstoffdämpfen aus dem Drucksensor in die Atmosphäre lässt sich gemäß einer vorteilhaften Weiterbildung der Erfindung einfach vermeiden, wenn der Drucksensor an einem innerhalb des Kraftstoffbehälters geführten Abschnitt der Vorlaufleitung angeschlossen ist. Hierdurch hat ein Anschluss des Drucksensors an die Vorlaufleitung keinen Kontakt zur Umgebung, so dass an dem Drucksensor durch Leckage oder Diffusion entweichender Kraftstoff innerhalb des Kraftstoffbehälters verbleibt. Vorzugsweise ist der Drucksensor ebenfalls innerhalb des Kraftstoffbehälters angeordnet.A possible escape of fuel vapors from the pressure sensor into the atmosphere can be according to an advantageous development of the invention easily avoided if the pressure sensor is connected to a guided inside the fuel tank section of the flow line. As a result, a connection of the pressure sensor to the flow line no contact with the environment, so that at the pressure sensor leakage or diffusion escaping fuel within the fuel tank remains. Preferably, the pressure sensor is also disposed within the fuel tank.
Die Montage der erfindungsgemäßen Kraftstofffördereinrichtung gestaltet sich besonders einfach, wenn der Drucksensor mit der Kraftstoffpumpe als bauliche Einheit gestaltet ist. In der Regel weist die Kraftstoffpumpe eine bauliche Einheit mit einem Schwalltopf und einem eine Montageöffnung des Kraftstoffbehälters verschließenden Flansch auf. Der Drucksensor kann daher einfach an einem dieser Bauteile befestigt werden und ist bei der Montage der Kraftstoffpumpe im Kraftstoffbehälter montiert. Weiterhin lassen sich durch diese Gestaltung der Drucksensor und die Bedarfssteuerung der Kraftstoffpumpe einfach außerhalb des Kraftstoffbehälters prüfen.The assembly of the fuel delivery device according to the invention is particularly simple if the pressure sensor is designed with the fuel pump as a structural unit. As a rule, the fuel pump has a structural unit with a swirl pot and a flange which closes a mounting opening of the fuel tank. The pressure sensor can therefore be easily attached to one of these components and is mounted during assembly of the fuel pump in the fuel tank. Furthermore, can be through this design simply check the pressure sensor and demand control of the fuel pump outside of the fuel tank.
Die erfindungsgemäße Kraftstofffördereinrichtung ist besonders kostengünstig herstellbar, wenn ein Feinfilter, der Drucksensor, ein Druckregler und ein Rückschlagventil als bauliche Einheit ausgebildet sind.The fuel delivery device according to the invention is particularly inexpensive to produce, if a fine filter, the pressure sensor, a pressure regulator and a check valve are designed as a structural unit.
Eine Kontaktierung des Drucksensors gestaltet sich besonders einfach und kostengünstig, wenn Anschlusskontakte zur Verbindung des Drucksensors mit einer Steuerelektronik für eine Bedarfssteuerung der Kraftstoffpumpe in einem eine Montageöffnung des Kraftstoffbehälters verschließenden Flansch angeordnet sind.A contacting of the pressure sensor is particularly simple and inexpensive, if connection contacts for connection of the pressure sensor with an electronic control system for a demand control of the fuel pump are arranged in a mounting opening of the fuel tank closing flange.
Die erfindungsgemäße Kraftstofffördereinrichtung gestaltet sich konstruktiv besonders einfach, wenn der Drucksensor in einem eine Montageöffnung des Kraftstoffbehälters verschließenden Flansch der Kraftstoffpumpe angeordnet ist.The fuel delivery device according to the invention is structurally particularly simple if the pressure sensor is arranged in a flange of the fuel pump which closes a mounting opening of the fuel tank.
Meist ist an dem Flansch ein häufig als Life-Time-Filter bezeichneter Feinfilter angeordnet. Hierbei gestaltet sich die erfindungsgemäße Kraftstofffördereinrichtung konstruktiv besonders einfach, wenn der Drucksensor in Strömungsrichtung gesehen zwischen der Kraftstoffpumpe und dem Feinfilter angeordnet ist.In most cases, a fine filter often referred to as a life-time filter is arranged on the flange. In this case, the fuel delivery device according to the invention structurally particularly simple, when the pressure sensor is arranged in the flow direction between the fuel pump and the fine filter.
Eine Fehlmessung des Drucksensors durch einen von dem Feinfilter und/oder einem Rückschlagventil hervorgerufenen Druckverlust lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach vermeiden, wenn der Drucksensor unmittelbar vor einem von dem Flansch weg führenden Anschluss der Vorlaufleitung angeordnet ist.A faulty measurement of the pressure sensor by a caused by the fine filter and / or a check valve pressure loss can be easily avoided according to another advantageous embodiment of the invention, when the pressure sensor is located immediately in front of a leading away from the flange connection of the flow line.
Im Leerlauf oder bei Lastwechsel kann das Rückschlagventil bei in Betrieb befindlicher Kraftstoffpumpe schließen. Dank der Erfindung lässt sich jedoch auch im Leerlauf oder bei Lastwechsel der von der Kraftstoffpumpe erzeugte Druck einfach messen, wenn der Drucksensor in Strömungsrichtung gesehen vor dem Rückschlagventil angeordnet ist. Ein weiterer Vorteil dieser Gestaltung besteht drin, dass eine Verschmutzung eines hinter dem Rückschlagventil angeordneten Feinfilters ebenfalls erfasst wird.When idling or when changing the load, the check valve may close when the fuel pump is in operation. Thanks to the invention, however, can also be idle or at Load change of the pressure generated by the fuel pump easy to measure when the pressure sensor is arranged upstream of the check valve seen in the flow direction. Another advantage of this design is that pollution of a fine filter arranged behind the check valve is also detected.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind mehrere davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt in:
- Fig. 1
- schematisch eine erfindungsgemäße Kraftstofffördereinrichtung,
- Fig. 2
- schematisch einen Teilbereich einer weiteren Ausführungsform der erfindungsgemäßen Kraftstofffördereinrichtung,
- Fig. 3
- schematisch einen Teilbereich einer weiteren Ausführungsform der erfindungsgemäßen Kraftstofffördereinrichtung mit einem vor einem Rückschlagventil angeordneten Drucksensor, Beispiel
- Fig. 4
- schematisch einen Teilbereich ein Beispiel der erfindungsgemäßen Kraftstofffördereinrichtung mit einem innerhalb eines Kraftstoffbehälters angeordneten Drucksensor.
- Fig. 1
- schematically a fuel delivery device according to the invention,
- Fig. 2
- FIG. 2 schematically shows a partial region of a further embodiment of the fuel delivery device according to the invention, FIG.
- Fig. 3
- schematically a portion of another embodiment of the fuel conveyor according to the invention with a pressure sensor arranged in front of a check valve, example
- Fig. 4
- schematically a portion of an example of the fuel delivery device according to the invention with a disposed within a fuel tank pressure sensor.
Claims (8)
- Fuel delivery device for supplying an internal combustion engine of a motor vehicle with fuel from a fuel tank (2), having an electromotively driven fuel pump (7) which is arranged in the fuel tank (2), having a feed line (6) which is connected to the fuel pump (7) and which leads to the internal combustion engine, and having a pressure sensor (14) for determining the pressure of the fuel fed to the internal combustion engine, wherein the pressure sensor (14) is connected to a section, which is remote from the internal combustion engine, of the feed line (6), characterized in that the pressure sensor (14) is arranged in a flange (13), which closes off an assembly opening (12) of the fuel tank (2), of the fuel pump (7).
- Fuel delivery device according to Claim 1,
characterized in that the pressure sensor (14) is connected to a section, which is guided within the fuel tank (2), of the feed line (6). - Fuel delivery device according to Claim 1 or 2, characterized in that the pressure sensor (14) is formed as a structural unit with the fuel pump (7).
- Fuel delivery device according to Claim 1 or 2, characterized in that a fine filter (18), the pressure sensor (14), a pressure regulator (19) and a non-return valve (20, 21) are formed as a structural unit.
- Fuel delivery device according to at least one of the preceding claims, characterized in that contact terminals (22) for connecting the pressure sensor (14) to control electronics (17) for demand control of the fuel pump (7) are arranged in a flange (13) which closes off an assembly opening (12) of the fuel tank (2).
- Fuel delivery device according to at least one of the preceding claims, characterized in that the pressure sensor (14) is arranged between the fuel pump (7) and the fine filter (18) as viewed in the flow direction.
- Fuel delivery device according to at least one of the preceding claims, characterized in that the pressure sensor (14) is arranged directly upstream of a connection, which leads away from the flange (13), of the feed line (6).
- Fuel delivery device according to at least one of the preceding claims, characterized in that the pressure sensor (14) is arranged upstream of the non-return valve (20, 21) as viewed in the flow direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006001878A DE102006001878A1 (en) | 2006-01-13 | 2006-01-13 | Fuel conveyor |
PCT/EP2006/069809 WO2007082616A1 (en) | 2006-01-13 | 2006-12-18 | Fuel delivery device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1977105A1 EP1977105A1 (en) | 2008-10-08 |
EP1977105B1 true EP1977105B1 (en) | 2016-07-06 |
Family
ID=37895975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06841404.4A Active EP1977105B1 (en) | 2006-01-13 | 2006-12-18 | Fuel delivery device |
Country Status (4)
Country | Link |
---|---|
US (1) | US8065989B2 (en) |
EP (1) | EP1977105B1 (en) |
DE (1) | DE102006001878A1 (en) |
WO (1) | WO2007082616A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009067449A1 (en) * | 2007-11-19 | 2009-05-28 | Robert Bosch Gmbh | Fuel liquid and vapor pressure sensor |
DE102008044904A1 (en) * | 2008-08-29 | 2010-03-04 | Continental Automotive Gmbh | Fuel supply system for a motor vehicle |
Family Cites Families (31)
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US4920942A (en) * | 1987-04-24 | 1990-05-01 | Diesel Kiki Co., Ltd. | Method and apparatus for supplying fuel to internal combustion engines |
US4926829A (en) * | 1988-11-28 | 1990-05-22 | Walbro Corporation | Pressure-responsive fuel delivery system |
US4928657A (en) * | 1989-03-02 | 1990-05-29 | Walbro Corporation | In-tank fuel reservoir with fuel level sensor |
US5044344A (en) * | 1989-10-16 | 1991-09-03 | Walbro Corporation | Pressure-responsive fuel delivery system |
US5120201A (en) * | 1990-12-17 | 1992-06-09 | Walbro Corporation | Brushless DC fuel pump responsive to pressure sensor |
US5411002A (en) * | 1991-02-28 | 1995-05-02 | Walter Potoroka, Sr. | Internal combustion engine fuel injection apparatus and system |
US5261379A (en) * | 1991-10-07 | 1993-11-16 | Ford Motor Company | Evaporative purge monitoring strategy and system |
US5148792A (en) * | 1992-01-03 | 1992-09-22 | Walbro Corporation | Pressure-responsive fuel delivery system |
US5267470A (en) * | 1992-04-30 | 1993-12-07 | Siemens Automotive Limited | Pressure sensor mounting for canister purge system |
FR2695964B1 (en) * | 1992-09-24 | 1995-07-21 | Walbro Corp | FUEL DISTRIBUTION CIRCUIT FOR INTERNAL COMBUSTION ENGINE. |
US5351548A (en) * | 1992-12-02 | 1994-10-04 | Walbro Corporation | Capacitive pressure sensor |
US5361742A (en) * | 1993-02-08 | 1994-11-08 | Walbro Corporation | Fuel pump manifold |
US5398655A (en) * | 1994-01-14 | 1995-03-21 | Walbro Corporation | Manifold referenced returnless fuel system |
US5613844A (en) * | 1994-11-15 | 1997-03-25 | Walbro Corporation | Submersible electronic drive module |
JP3205216B2 (en) * | 1995-03-30 | 2001-09-04 | 三菱電機株式会社 | Pressure sensor |
US5961293A (en) * | 1995-05-19 | 1999-10-05 | Uis, Inc | In-take fuel pump assembly with unitary control unit for internal combustion engines |
JPH08338335A (en) * | 1995-06-09 | 1996-12-24 | Nippondenso Co Ltd | Fuel feeding device for internal combustion engine |
JP3804814B2 (en) * | 1996-09-09 | 2006-08-02 | 株式会社デンソー | Fuel supply device for internal combustion engine |
US6131445A (en) * | 1997-10-10 | 2000-10-17 | Ford Motor Company | Fuel tank sensor assembly |
EP1031725B1 (en) * | 1999-02-26 | 2004-12-29 | Walbro Corporation | Vehicle fuel system |
IT1308091B1 (en) * | 1999-06-10 | 2001-11-29 | Bitron Spa | CONTROLLED PRESSURE FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE, ESPECIALLY FOR MOTOR VEHICLES |
DE10006622A1 (en) * | 2000-02-15 | 2001-08-16 | Bosch Gmbh Robert | Device for supplying a motor vehicle's internal combustion engine with fuel has a feeder unit driven by an electric motor to feed fuel from a reservoir to an internal combustion engine, also pressure-limiting and reverse flow valves. |
US6877488B2 (en) * | 2002-05-29 | 2005-04-12 | Nartron Corporation | Vehicle fuel management system |
JP2004124817A (en) * | 2002-10-02 | 2004-04-22 | Mitsubishi Electric Corp | Fuel pump module, and fuel tank internal pressure sensor for vehicle |
JP2004218571A (en) * | 2003-01-16 | 2004-08-05 | Aisan Ind Co Ltd | Fuel system for engine |
DE10355804A1 (en) * | 2003-11-28 | 2005-06-30 | Robert Bosch Gmbh | Device for conveying fuel from a reservoir to an internal combustion engine and method for pressure detection |
JP2005201068A (en) * | 2004-01-13 | 2005-07-28 | Denso Corp | Fuel discrimination device |
JP4261412B2 (en) * | 2004-04-16 | 2009-04-30 | 株式会社日立製作所 | Fuel supply device for internal combustion engine |
JP2007231907A (en) * | 2006-03-03 | 2007-09-13 | Denso Corp | Fuel supply device |
JP4415277B2 (en) * | 2006-04-20 | 2010-02-17 | 株式会社デンソー | Fuel supply device |
WO2009067449A1 (en) * | 2007-11-19 | 2009-05-28 | Robert Bosch Gmbh | Fuel liquid and vapor pressure sensor |
-
2006
- 2006-01-13 DE DE102006001878A patent/DE102006001878A1/en not_active Ceased
- 2006-12-18 WO PCT/EP2006/069809 patent/WO2007082616A1/en active Application Filing
- 2006-12-18 US US12/160,653 patent/US8065989B2/en not_active Expired - Fee Related
- 2006-12-18 EP EP06841404.4A patent/EP1977105B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102006001878A1 (en) | 2007-07-19 |
US20100154751A1 (en) | 2010-06-24 |
US8065989B2 (en) | 2011-11-29 |
WO2007082616A1 (en) | 2007-07-26 |
EP1977105A1 (en) | 2008-10-08 |
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