EP0916839A2 - Système d'alimentation en carburant pour moteur diesel - Google Patents

Système d'alimentation en carburant pour moteur diesel Download PDF

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Publication number
EP0916839A2
EP0916839A2 EP98119891A EP98119891A EP0916839A2 EP 0916839 A2 EP0916839 A2 EP 0916839A2 EP 98119891 A EP98119891 A EP 98119891A EP 98119891 A EP98119891 A EP 98119891A EP 0916839 A2 EP0916839 A2 EP 0916839A2
Authority
EP
European Patent Office
Prior art keywords
fuel
supply system
fuel supply
filter
bypass line
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
Application number
EP98119891A
Other languages
German (de)
English (en)
Other versions
EP0916839A3 (fr
EP0916839B1 (fr
Inventor
Holger Wehner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Mannesmann VDO AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0916839A2 publication Critical patent/EP0916839A2/fr
Publication of EP0916839A3 publication Critical patent/EP0916839A3/fr
Application granted granted Critical
Publication of EP0916839B1 publication Critical patent/EP0916839B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0035—Thermo sensitive valves
    • 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

Definitions

  • the invention relates to a fuel supply system for a diesel engine with a fuel from one Swirl pot of a fuel tank to the diesel engine promotional fuel pump, with one from an injection rail and / or a high pressure pump of the diesel engine return line led into the fuel tank and with a fuel filter arranged in front of the fuel pump.
  • Such fuel supply systems are used in today's Diesel engines are widely used and are from practice known.
  • the one from the diesel engine via the return line backflowing fuel has a high temperature and is usually fed to a suction jet pump, the fuel promotes from the fuel tank into the baffle.
  • the fuel delivered into the surge pot points therefore a temperature that is between the temperature in the return line and in the fuel tank lies.
  • the Diesel fuel precipitated solid paraffins the fuel filter add, and after some time by the in melted warm fuel flowing into the swirl pot become.
  • Fuel filter for today's diesel engines where the Fuel is injected directly into cylinders, however particularly close-meshed to make the fuel as possible to clean thoroughly. This can cause the fuel filter the known fuel supply system very low temperatures very quickly with paraffins add before the fuel in the baffle Temperature reached, which melts the paraffins.
  • the invention is based on the problem of a fuel supply system to be designed so that clogging of the fuel filter largely avoided with paraffins becomes.
  • the bypass line could, for example, in the direction of flow seen in front of the fuel filter.
  • the disadvantage here is, however, that the fuel from the bypass line with the cold Fuel in the surge pot is cooled so far that the The fuel filter is only slightly heated.
  • fuel pump is according to an advantageous Development of the invention reliably with a minimum amount supplied with warm fuel when the bypass line seen in a flow direction after a Filter element of the fuel filter and / or the fine filter arranged swirling space opens out.
  • the one about the Bypass line fuel flowing into the fuel filter is already cleaned, so this immediately can be supplied to the fuel pump. Through this The design is the one sucked in via the fuel filter Volume flow kept particularly low.
  • the filter element of the fuel filter is thanks to the invention of the Side of the fuel pump warmed up.
  • Fuel flowing back through the return line can be easily divided into the intended partial flows for the Divide the bypass line and for the suction jet pump if A throttle is arranged in the bypass line.
  • This Throttle can be used, for example, to narrow the cross section Bypass line be designed. This can ensure that the baffle is always fueled is filled.
  • Constant heating of the fuel through the connection the bypass line in front of the fuel pump according to another advantageous development of the Avoid invention if the bypass line above a provided temperature can be closed by a valve is. This will cause gas bubbles to form at very high levels Temperatures of the fuel can arise reliably avoided.
  • the fuel flowing back through the return line can be according to another advantageous development of the invention completely for heating the fuel filter use when seen in the direction of flow arranged after a branch of the bypass line Section of the return line below an intended one Temperature can be closed by a valve.
  • valve could, for example, be switched electrically become.
  • the valve requires another advantageous development of the invention a particularly little construction effort if it is one of a spring element pretensioned closing element and an actuator with a wax filling for adjustment of the closing member.
  • the wax filling stretches rising temperature and thereby shifts it Closing link. When the temperature drops, the closing member moved back from the spring element into the basic position.
  • the valve is designed according to another advantageous one Development of the invention is particularly cost-effective, if the valve is an actuator with a metal memory alloy Has.
  • the fuel supply system according to the invention is special easy to install if the fine filter with a the fuel pump has a structural unit Unity.
  • This design can be all connections for the fine filter and the bypass line arrange inside the fuel tank, see above that fuel diffusion losses are particularly low being held.
  • the bypass line can be according to another advantageous one Further development of the invention directly at the Connect high pressure pump and in a particularly short way lead to the fine filter if the fine filter with the High pressure pump forms a structural unit. This carries for a particularly short heating-up time of the fine filter at.
  • FIG. 1 shows schematically an inventive Fuel supply system with one in a fuel tank 1 arranged conveyor unit 2 and one Injection strip 3 of a diesel engine.
  • the conveyor unit 2 has a fuel pump arranged in a surge pot 4 5 and a fuel filter 6 with a filter element 7.
  • the fuel pump 5 delivers fuel over a flow line 8 to a high pressure pump 9.
  • a pressure control valve 10 arranged, which is provided above a Pressure opens and excess fuel over a return line 11 leads back into the fuel tank 1.
  • a fine filter 12 In front of the high pressure pump 9 is a fine filter 12 with a mesh size of, for example, 5 ⁇ m Filter element 13 arranged.
  • the return line 11 has two valves 14, 15, each via one Bypass line 16, 17 with the fine filter 12 and the fuel filter 6 are connected.
  • the fuel that over the return line 11 enters the fuel tank 1, is fed to a suction jet pump 18 which Sucks fuel from the fuel tank 1 and in promotes the surge pot 4.
  • a partial flow occurs at particularly low temperatures of the hot fuel from the return line 11 via the bypass lines 16, 17 to the fine filter 12 and the fuel filter 6.
  • the bypass lines 16, 17 are viewed in the flow direction after the filter elements 7, 13 arranged swirling spaces 19, 20 fed.
  • FIG 2 shows an embodiment of one of the valves 14, 15 from Figure 1 in a longitudinal section.
  • the valve 14, 15 has one arranged in the bypass line 16, 17 Locking member 21, which from a spring element 22 in the drawn basic position is biased.
  • the bypass line 16, 17 is at opened at low temperature and is opened at high temperature locked.
  • the flows of the fuel are shown with arrows.
  • FIG. 3 shows a further embodiment of one of the Valves 14, 15 from FIG. 1, in which a closing element 24 is formed to block the return line 11.
  • the closing element 24 is also supported by an actuating element 25 a metal memory alloy.
  • the closing member 24 at low temperature shown in which there is a to that shown in Figure 1 Fuel tank 1 leading section of the return line 11 closes and via a bore 26 Fuel can get into the bypass line 16, 17.
  • the closing member is above a specified temperature 24 moved to the left so that fuel in the Figure 1 shown fuel tank 1 and in the Bypass line 16, 17 can reach.
  • FIG. 4 shows one of an actuating element 27 with a Metal memory alloy adjustable locking member 28.
  • the closing member 28 like that in FIG. 2, serves for closing the bypass line 16, 17 at high temperatures.
  • FIG. 5 shows one arranged in the bypass line 16, 17 Throttle 29, which instead of that shown in Figure 1 Valves 14, 15 in the fuel supply position can be used.
  • the throttle 29 is a cross-sectional constriction designed in the bypass line 16, 17 and enables a constant branching of a partial flow from the return line 11 into the bypass line 16, 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Processes For Solid Components From Exhaust (AREA)
EP98119891A 1997-11-15 1998-10-21 Système d'alimentation en carburant pour moteur diesel Expired - Lifetime EP0916839B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19750680A DE19750680C2 (de) 1997-11-15 1997-11-15 Kraftstoffversorgungsanlage für einen Dieselmotor
DE19750680 1997-11-15

Publications (3)

Publication Number Publication Date
EP0916839A2 true EP0916839A2 (fr) 1999-05-19
EP0916839A3 EP0916839A3 (fr) 2000-03-08
EP0916839B1 EP0916839B1 (fr) 2003-08-06

Family

ID=7848850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119891A Expired - Lifetime EP0916839B1 (fr) 1997-11-15 1998-10-21 Système d'alimentation en carburant pour moteur diesel

Country Status (2)

Country Link
EP (1) EP0916839B1 (fr)
DE (2) DE19750680C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929986A1 (de) * 1999-06-30 2001-01-11 Alfmeier Praez Ag Kraftstoffentnahmevorrichtung für Kraftfahrzeuge
WO2003078821A2 (fr) * 2002-03-14 2003-09-25 Delphi Technologies, Inc. Systeme d'alimentation en carburant
JP2020529552A (ja) * 2017-08-11 2020-10-08 ハイダック フルイドケアセンター ゲゼルシャフト ミット ベシュレンクテル ハフツング 内燃機関の燃料用の移送装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2035683B1 (fr) 2006-06-27 2009-12-02 Georg Gruber Moteur à combustion interne entraîné par moteur diesel
US7757672B2 (en) * 2008-09-15 2010-07-20 Gm Global Technology Operations, Inc. Anti-clogging fuel pump module
DE102009052601B4 (de) 2009-11-10 2022-07-07 Daimler Truck AG Kraftstoffeinspritzanlage
US9776507B2 (en) 2010-12-14 2017-10-03 GM Global Technology Operations LLC Temperature based fuel management in a vehicle fuel system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2031994A (en) * 1978-09-26 1980-04-30 Bosch Gmbh Robert Apparatus for filtering fuel for diesel engines
DE3503728A1 (de) * 1984-02-04 1985-08-14 Atsugi Motor Parts Co. Ltd., Atsugi, Kanagawa Kraftstoffversorgungseinrichtung fuer diesel-brennkraftmaschinen
EP0166160A1 (fr) * 1984-06-22 1986-01-02 Robert Bosch Gmbh Filtre pour carburant Diésel
GB2259587A (en) * 1991-09-11 1993-03-17 Ford Motor Co Engine fuel supply

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746784B1 (fr) * 1996-03-27 1998-05-22 Bitron France Dispositif de pompage immerge dans un reservoir pour vehicule automobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2031994A (en) * 1978-09-26 1980-04-30 Bosch Gmbh Robert Apparatus for filtering fuel for diesel engines
DE3503728A1 (de) * 1984-02-04 1985-08-14 Atsugi Motor Parts Co. Ltd., Atsugi, Kanagawa Kraftstoffversorgungseinrichtung fuer diesel-brennkraftmaschinen
EP0166160A1 (fr) * 1984-06-22 1986-01-02 Robert Bosch Gmbh Filtre pour carburant Diésel
GB2259587A (en) * 1991-09-11 1993-03-17 Ford Motor Co Engine fuel supply

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929986A1 (de) * 1999-06-30 2001-01-11 Alfmeier Praez Ag Kraftstoffentnahmevorrichtung für Kraftfahrzeuge
DE19929986C2 (de) * 1999-06-30 2002-11-21 Alfmeier Praez Ag Kraftstoffentnahmevorrichtung für Kraftfahrzeuge
WO2003078821A2 (fr) * 2002-03-14 2003-09-25 Delphi Technologies, Inc. Systeme d'alimentation en carburant
WO2003078821A3 (fr) * 2002-03-14 2003-12-18 Delphi Tech Inc Systeme d'alimentation en carburant
US7163003B2 (en) 2002-03-14 2007-01-16 Delphi Technologies, Inc. Fuel system
JP2020529552A (ja) * 2017-08-11 2020-10-08 ハイダック フルイドケアセンター ゲゼルシャフト ミット ベシュレンクテル ハフツング 内燃機関の燃料用の移送装置
JP7382319B2 (ja) 2017-08-11 2023-11-16 ハイダック フルイドケアセンター ゲゼルシャフト ミット ベシュレンクテル ハフツング 内燃機関の燃料用の移送装置

Also Published As

Publication number Publication date
DE19750680C2 (de) 1999-11-18
DE59809196D1 (de) 2003-09-11
EP0916839A3 (fr) 2000-03-08
EP0916839B1 (fr) 2003-08-06
DE19750680A1 (de) 1999-06-02

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