EP1032759A1 - Dispositif d'alimentation en carburant pour moteur a combustion interne - Google Patents
Dispositif d'alimentation en carburant pour moteur a combustion interneInfo
- Publication number
- EP1032759A1 EP1032759A1 EP99936423A EP99936423A EP1032759A1 EP 1032759 A1 EP1032759 A1 EP 1032759A1 EP 99936423 A EP99936423 A EP 99936423A EP 99936423 A EP99936423 A EP 99936423A EP 1032759 A1 EP1032759 A1 EP 1032759A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- filter
- fine filter
- internal combustion
- combustion engine
- 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
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
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
-
- 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
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/50—Filters arranged in or on fuel tanks
-
- 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
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous
Definitions
- the invention relates to a device according to the preamble of the main claim.
- a device for supplying an internal combustion engine with fuel present in a tank is known, in which a feed pump and a fuel filter are arranged on a delivery path for the fuel.
- Fuel supply systems for direct injection into the cylinders of an internal combustion engine require a finer filtration of the fuel than conventional systems with intake manifold injection. While filter pore sizes of 10 ⁇ m are sufficient in systems for intake manifold injection, pore sizes of approx. 3 ⁇ m are required for direct injection.
- the fuel supply device according to the invention with the features of claim 1 has the advantage that it enables a finer filtering of the fuel than the previous fuel supply devices for intake manifold injection, without the space requirement of the device increasing significantly or the service life of the filter being shortened.
- FIGS. 1 to 4 each schematically represent an exemplary embodiment.
- the device comprises an electric fuel feed pump 2, which is arranged in the interior of the tank 1 and sucks in fuel via a suction nozzle 3 arranged in the vicinity of the bottom thereof.
- a sieve is arranged in the outlet connection 3, which protects the fuel delivery pump from coarse dirt particles carried in the fuel drawn in.
- the strainer must have little resistance to the flow of fuel oppose, it is therefore usually designed as a thin coarse-mesh membrane made of plastic or as a wire mesh.
- the mesh size of the sieve is typically 0.3 mm when the supply device is used for diesel fuel and 0.06 mm for petrol.
- the fuel delivery pump forms the starting point of a delivery route, in the course of which the fuel initially flows through a prefilter 4 with a pore size of approximately 8-15 ⁇ m, preferably 10 ⁇ m. This traps the coarser particles or contaminants in the fuel. Like the feed pump 2, it is arranged inside the tank.
- the conveyor section further comprises a conveyor line 5, which extends from the outlet of the pre-filter 4 through a flange 6 to a fine filter arranged outside the tank.
- the pore size of the fine filter is expediently in the range 1.5-8 ⁇ m and is significantly smaller, for example by a factor of 2-4, than the pore size of the pre-filter 4.
- a line branching off from the delivery line leads to a pressure regulator 8.
- the pressure regulator 8 comprises a pressure chamber 9 which is directly connected to the supply line 5 via the branching line and is delimited on one side by a membrane 10. If the pressure in the pressure chamber exceeds a predetermined value, the membrane 10 of a (not shown) seal seat lifted, and fuel flows from the pressure chamber 9 back into the tank. In this way, a constant pressure on the delivery line 5 is ensured regardless of the delivery rate of the fuel pump 2.
- Feed pump 2, prefilter 4 and pressure regulator 8 are expediently connected to the flange 6 by a support frame (not shown) to form a module which can be removed from the tank 1 and serviced by loosening the flange 6 as a unit.
- the exemplary embodiment shown in FIG. 2 essentially comprises the same components as that from FIG. 1.
- the main difference between the two examples is that in FIG. 2 the order of fine filter 7 and pressure regulator 8 is interchanged.
- the fine filter 7 thus follows the pre-filter 4 directly, both of which can be integrated in a uniform housing.
- the arrangement of the pressure regulator behind both filters ensures that the fuel pressure at the carburetor (not shown) is subject to less fluctuations than in the example from FIG. 1, since it does not depend on a throughput-dependent pressure drop in the fine filter 7.
- the pressure regulator 8 shown separately from the flange 6 in the schematic FIG. 2 is expediently mounted directly on the flange 6.
- a sensor 11 detects the pressure on the delivery line 5, and a control circuit 12 regulates the delivery rate of the delivery pump 2 in such a way that the pressure detected by the sensor 11 is essentially constant at a target pressure in a range of approximately 3 remains up to 5 bar.
- a pressure relief valve 13 in a line branching off the delivery line 5 is set in such a way that it opens at a pressure which substantially exceeds the target pressure, for example approximately 10 bar. It serves to prevent the occurrence of excess pressures on the delivery line 5 in the event of a fault in the pressure control, which could otherwise possibly lead to the delivery line becoming leaky.
- the fine filter 7 arranged outside the tank 1, as in the example in FIG. 1, is easily accessible for maintenance purposes and can be replaced if it is clogged.
- the pre-filter 4 inside the tank can be designed as a lifetime filter.
- the arrangement of the sensor 11 may differ from that shown here, e.g. it can be arranged downstream of the fine filter 7, or it can be arranged directly at the outlet of the feed pump 2, in which case sensor 11 and control circuit 12 are expediently integrated into the housing of the feed pump 2.
- Fig. 4 differs from Fig. 3 in that the fine filter 7 is arranged within the tank 1, and that the pressure relief valve 13 branches off downstream of the fine filter 7 from the delivery line 5.
- a pressure relief valve which is usually integrated directly at the outlet of conventional fuel feed pumps in their housing in order to limit their output pressure, can be omitted in the fuel feed pumps shown in FIGS. 3 and 4, since its function is taken over by the pressure relief valve 13 .
- the pressure relief valve. 13 are omitted if an overpressure valve integrated in the housing of the feed pump 2 is provided.
- prefilter 4 and fine filter 7 are shown as spatially separate units.
- both filters can also be designed as a one-piece filter body, the pore size of which is roughly porous area forming a pre-filter gradually or gradually decreases to a fine-pored area forming a fine filter.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
- Fuel-Injection Apparatus (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19828931A DE19828931A1 (de) | 1998-06-29 | 1998-06-29 | Kraftstoffversorgungsvorrichtung für eine Brennkraftmaschine |
DE19828931 | 1998-06-29 | ||
PCT/DE1999/001663 WO2000000736A1 (fr) | 1998-06-29 | 1999-06-08 | Dispositif d'alimentation en carburant pour moteur a combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1032759A1 true EP1032759A1 (fr) | 2000-09-06 |
EP1032759B1 EP1032759B1 (fr) | 2003-11-19 |
Family
ID=7872362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99936423A Expired - Lifetime EP1032759B1 (fr) | 1998-06-29 | 1999-06-08 | Dispositif d'alimentation en carburant pour moteur a combustion interne |
Country Status (7)
Country | Link |
---|---|
US (1) | US6253740B1 (fr) |
EP (1) | EP1032759B1 (fr) |
JP (1) | JP2002519569A (fr) |
KR (1) | KR20010023386A (fr) |
DE (2) | DE19828931A1 (fr) |
ES (1) | ES2212594T3 (fr) |
WO (1) | WO2000000736A1 (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19936287C2 (de) * | 1999-08-02 | 2003-04-30 | Bosch Gmbh Robert | Bedarfssteuerung für ein Kraftstoffördermodul mit variablem Systemdruck |
DE10013905A1 (de) * | 2000-03-21 | 2001-09-27 | Mannesmann Vdo Ag | Fördereinrichtung zum Fördern von Kraftstoff |
FR2823660A1 (fr) | 2001-04-18 | 2002-10-25 | Pneumopartners | Dispositif d'aide a l'analyse de bruits adventices |
GB0205965D0 (en) * | 2002-03-14 | 2002-04-24 | Delphi Tech Inc | Fuel system |
US6817344B2 (en) * | 2002-12-30 | 2004-11-16 | Caterpillar Inc | Fuel supply system |
US20050061372A1 (en) * | 2003-09-23 | 2005-03-24 | Mcgrath Dennis P. | Pressure regulator assembly |
US7302938B2 (en) * | 2003-10-16 | 2007-12-04 | Ford Motor Company | Mechanical returnless fuel system |
US6953026B2 (en) * | 2003-10-16 | 2005-10-11 | Visteon Global Technologies, Inc. | Pressure regulating valve for automotive fuel system |
ITRE20050095A1 (it) * | 2005-07-29 | 2007-01-30 | Ufi Filters Spa | Filtro combinato per gasolio |
DE202006002952U1 (de) * | 2006-02-22 | 2007-07-05 | Mann + Hummel Gmbh | Flüssigkeitssystem |
DE102007000855B4 (de) * | 2006-12-27 | 2020-06-10 | Denso Corporation | Kraftstofffördergerät und Speicherkraftstoffeinspritzsystem, das dieses aufweist |
EP2134440B1 (fr) * | 2007-03-29 | 2011-05-18 | Honda Motor Co., Ltd. | Dispositif d'alimentation en carburant pour véhicule et structure de filtre à carburant |
JP2009144542A (ja) * | 2007-12-12 | 2009-07-02 | Aisan Ind Co Ltd | 燃料供給装置 |
US7753033B2 (en) * | 2008-09-05 | 2010-07-13 | Delphi Technologies, Inc. | Fuel module with orifice upstream from regulator |
US7757672B2 (en) * | 2008-09-15 | 2010-07-20 | Gm Global Technology Operations, Inc. | Anti-clogging fuel pump module |
DE102010043644A1 (de) | 2010-11-09 | 2012-05-10 | Mahle International Gmbh | Kraftstoffversorgungssystem |
US9051906B2 (en) * | 2012-02-29 | 2015-06-09 | Ford Global Technologies, Llc | Diesel fuel system conditioning |
US11333115B2 (en) * | 2015-11-20 | 2022-05-17 | Clark Equipment Company | Fuel recirculation method and valve |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1192623B (de) * | 1962-03-20 | 1965-05-13 | Gustav Eisermann | Stufenfilter |
DE3631579C1 (de) * | 1986-09-17 | 1992-02-20 | Daimler Benz Ag | Niederdruckkraftstoffkreislauf mit Kraftstoffvorwaermung fuer eine luftverdichtende Einspritzbrennkraftmaschine,insbesondere fuer Nutzfahrzeuge |
DE3825470A1 (de) * | 1988-07-27 | 1990-02-01 | Daimler Benz Ag | Fuer eine brennkraftmaschine vorgesehene kraftstoffversorgungseinrichtung |
DE4224981C2 (de) * | 1992-07-29 | 2003-06-26 | Bosch Gmbh Robert | Einrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges |
DE4242242C2 (de) | 1992-12-15 | 2003-04-30 | Bosch Gmbh Robert | Vorrichtung zum Versorgen der Brennkraftmaschine eines Kraftfahrzeuges mit in einem Vorratstank vorhandenem Kraftstoff |
US5330475A (en) * | 1993-11-29 | 1994-07-19 | General Motors Corporation | Modular fuel sender for motor vehicle |
US5415146A (en) * | 1993-12-14 | 1995-05-16 | Walbro Corporation | Supplemental in-tank filter |
DE4420043C1 (de) * | 1994-06-08 | 1995-09-14 | Kraft Herbert Georgsdorf | Kraftstoffeinspritzanlage für Dieselmotoren mit Kraftstofferwärmung für den Winterbetrieb |
JP3556983B2 (ja) * | 1994-12-28 | 2004-08-25 | トヨタ自動車株式会社 | 内燃機関の燃料供給装置 |
WO1996023569A1 (fr) * | 1995-02-03 | 1996-08-08 | Nippondenso Co., Ltd. | Filtre |
JPH08261084A (ja) * | 1995-03-20 | 1996-10-08 | Nippondenso Co Ltd | 内燃機関の燃料供給装置 |
JPH08338335A (ja) * | 1995-06-09 | 1996-12-24 | Nippondenso Co Ltd | 内燃機関の燃料供給装置 |
DE19605952A1 (de) * | 1996-02-17 | 1997-08-21 | Bosch Gmbh Robert | Vorrichtung zum Versorgen einer Brennkraftmaschine eines Kraftfahrzeugs mit in einem Vorratstank vorhandenem Kraftstoff |
-
1998
- 1998-06-29 DE DE19828931A patent/DE19828931A1/de not_active Ceased
-
1999
- 1999-06-08 US US09/485,984 patent/US6253740B1/en not_active Expired - Fee Related
- 1999-06-08 ES ES99936423T patent/ES2212594T3/es not_active Expired - Lifetime
- 1999-06-08 DE DE59907797T patent/DE59907797D1/de not_active Expired - Fee Related
- 1999-06-08 WO PCT/DE1999/001663 patent/WO2000000736A1/fr not_active Application Discontinuation
- 1999-06-08 KR KR1020007002026A patent/KR20010023386A/ko not_active Application Discontinuation
- 1999-06-08 JP JP2000557072A patent/JP2002519569A/ja active Pending
- 1999-06-08 EP EP99936423A patent/EP1032759B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0000736A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19828931A1 (de) | 1999-12-30 |
JP2002519569A (ja) | 2002-07-02 |
WO2000000736A1 (fr) | 2000-01-06 |
EP1032759B1 (fr) | 2003-11-19 |
US6253740B1 (en) | 2001-07-03 |
DE59907797D1 (de) | 2003-12-24 |
ES2212594T3 (es) | 2004-07-16 |
KR20010023386A (ko) | 2001-03-26 |
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