EP1091115B1 - Système d'alimentation en carburant et procédé pour faire fonctionner ce système - Google Patents

Système d'alimentation en carburant et procédé pour faire fonctionner ce système Download PDF

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Publication number
EP1091115B1
EP1091115B1 EP00119392A EP00119392A EP1091115B1 EP 1091115 B1 EP1091115 B1 EP 1091115B1 EP 00119392 A EP00119392 A EP 00119392A EP 00119392 A EP00119392 A EP 00119392A EP 1091115 B1 EP1091115 B1 EP 1091115B1
Authority
EP
European Patent Office
Prior art keywords
fuel
pump
combustion engine
internal combustion
auxiliary pump
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.)
Expired - Lifetime
Application number
EP00119392A
Other languages
German (de)
English (en)
Other versions
EP1091115A2 (fr
EP1091115A3 (fr
Inventor
Rolf Dr. Bosse
Thomas Lang
Henning Meyer
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1091115A2 publication Critical patent/EP1091115A2/fr
Publication of EP1091115A3 publication Critical patent/EP1091115A3/fr
Application granted granted Critical
Publication of EP1091115B1 publication Critical patent/EP1091115B1/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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary 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

Definitions

  • the invention relates to a fuel system for an internal combustion engine of a Motor vehicle with the features mentioned in the preamble of claim 1 and a Method for operating the fuel system with the mentioned in the preamble of claim 7 Features.
  • Fuel delivery systems have at least one fuel pump, which via a Pressure line system from a tank fuel to the internal combustion engine promotes.
  • a pressure regulator is assigned to the fuel pump or integrated into it.
  • a disadvantage of such Kraftstofditionanlagen is that the fuel pump for a very large operating range must be designed in terms of their capacity.
  • the flow rate of such Fuel pump will be insufficient. For example, the starting phase of the Internal combustion engine due to air bubbles in the fuel due to insufficient low flow rate are interrupted.
  • EP 0819458 B1 is a fuel supply device for diesel engines with a Fuel filter, a fuel tank and a high-pressure Einspritrpumpe shown.
  • an inlet line is provided which comprises an additional pump and the Fuel tank connects to the inlet channel of the fuel filter.
  • the high pressure injection pump is supplied with fuel via the outlet channel of the fuel filter and conducts the fuel to the injection line.
  • a fuel return line is shown above which derived from the high-pressure injection pump excess fuel derived becomes.
  • the Pressure of the fuel when entering the high-pressure injection pump in a fixed Area lie. If the fuel pressure in the outlet channel is too high, the fuel over the Bypass line removed and not supplied to the high-pressure injection pump.
  • the invention has for its object to provide a fuel system for a Internal combustion engine of a motor vehicle and a method for operating the Provide fuel system, so that the supply of Internal combustion engine with fuel in all operating phases of the Internal combustion engine is ensured.
  • the fuel system according to the invention for an internal combustion engine of a Motor vehicle has in a pressure line system, an electric auxiliary pump and a Check valve on, parallel to each other and in the flow direction to the fuel pump are arranged, wherein the electric auxiliary pump in a bypass of the Pressure line system between the tank and the fuel pump is located.
  • the electric auxiliary pump and the check valve the fuel from the tank in the flow direction Promote fuel pump.
  • a delivery rate of the fuel pump is detected in a control unit and set depending on a delivery rate of the electric auxiliary pump. Furthermore, it is envisaged that when not switched on electrical auxiliary pump the Promotion of the fuel is carried out exclusively via the check valve.
  • control unit is designed such that based on the speed of the Internal combustion engine a target injection quantity detectable and depending on the Delivery of the fuel pump and / or the electric auxiliary pump is adjustable.
  • the delivery rate of the additional pump in the start phase or also in to increase the acceleration phases of the internal combustion engine So that can Overall, the fuel pump can be made smaller.
  • a fuel pump 12 which via a Pressure line system 14 is connected to a tank 16.
  • suitable adjusting means for the Fuel pump 12, such as a pressure regulator has been omitted.
  • an additional pump 18 is integrated, which is in a bypass 20 of the Pressure line system 14 is housed and parallel to a check valve 22 is located. in the turned off state, the auxiliary pump 18 blocks the bypass 20, and the promotion can only be done by the check valve 22. A reflux of the fuel over the bypass 20 is thus prevented.
  • the fuel pump 12 and the auxiliary pump 18 is associated with a control unit 24, via suitable data lines directly or via known adjusting means with the Booster pump 18 and the fuel pump 12 is connected.
  • the controller 24 may be a Delivery of the fuel pump 12 are detected and the auxiliary pump 18 in dependence be regulated by it.
  • the auxiliary pump 18 are connected to a sufficient To ensure fuel flow to the internal combustion engine. After the start of the Internal combustion engine, for example, when reaching a predetermined speed of Internal combustion engine, the auxiliary pump 18 can be switched off again. It is but advantageous, the auxiliary pump 18 in the acceleration phases of the motor vehicle zuzupar to increase the overall delivery capacity of the fuel delivery system 10 and thus allowing a small design of the fuel pump 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (13)

  1. Système de carburant pour un moteur à combustion interne d'un véhicule automobile, comprenant un réservoir (16) et un système d'alimentation en carburant (10), qui présente une pompe de carburant (12) pour l'alimentation du moteur à combustion interne en carburant provenant du réservoir (16) par le biais d'un système de conduite sous pression (14), une pompe électrique supplémentaire (18) et un clapet anti-retour (22) étant disposés parallèlement l'un à l'autre dans le système de conduite sous pression (14) et la pompe électrique supplémentaire (18) se trouvant dans une dérivation du système de conduite sous pression (14) entre le réservoir (16) et la pompe de carburant (12), caractérisé en ce que la pompe électrique supplémentaire (18) et le clapet anti-retour (22) sont disposés dans la direction de l'écoulement vers la pompe de carburant (12).
  2. Système de carburant selon la revendication 1, caractérisé en ce que l'alimentation de la pompe de carburant (12) en carburant s'effectue exclusivement par le biais du clapet anti-retour (22) lorsque la pompe électrique supplémentaire (18) n'est pas branchée.
  3. Système de carburant selon la revendication 1 ou 2, caractérisé en ce qu'un appareil de commande (24) est associé à la pompe électrique supplémentaire (18) et à la pompe de carburant (12), lequel permet une régulation d'une puissance d'alimentation de la pompe électrique supplémentaire (18) en fonction d'une puissance d'alimentation de la pompe de carburant (12).
  4. Système de carburant selon la revendication 3, caractérisé en ce que l'appareil de commande (24) est réalisé de telle sorte qu'à partir de la vitesse du moteur à combustion interne on peut déterminer une quantité d'injection de consigne et en fonction de celle-ci la puissance d'alimentation de la pompe de carburant (12) et/ou de la pompe électrique supplémentaire (18) peut être ajustée.
  5. Système de carburant selon la revendication 3 ou 4, caractérisé en ce que l'appareil de commande (24) est réalisé de telle sorte que la puissance d'alimentation de la pompe électrique supplémentaire (18) peut être accrue dans une phase de démarrage et/ou une phase d'accélération du moteur à combustion interne.
  6. Système de carburant selon la revendication 3 ou 4, caractérisé en ce que l'appareil de commande (24) est réalisé de telle sorte que l'alimentation s'effectue exclusivement par le biais de la pompe électrique supplémentaire (18) dans une phase de marche à vide du moteur à combustion interne.
  7. Procédé pour faire fonctionner un système de carburant pour un moteur à combustion interne d'un véhicule automobile comprenant un réservoir (16) et un système d'alimentation en carburant (10), qui alimente le moteur à combustion interne en carburant provenant du réservoir (16) au moyen d'une pompe de carburant (12) par le biais d'un système de conduite sous pression (14), une pompe électrique supplémentaire (18) et un clapet anti-retour (22) étant disposé parallèlement l'un à l'autre dans le système de conduite sous pression (14) et la pompe électrique supplémentaire (18) se trouvant dans une dérivation du système de conduite sous pression (14) entre le réservoir (16) et la pompe de carburant (12), caractérisé en ce que la pompe électrique supplémentaire (18) et le clapet anti-retour (22) alimentent le carburant provenant du réservoir (16) dans la direction d'écoulement vers la pompe de carburant (12).
  8. Procédé selon la revendication 7, caractérisé en ce que l'on détecte une puissance d'alimentation de la pompe de carburant (12) dans un appareil de commande et une puissance d'alimentation de la pompe électrique supplémentaire (18) est ajustée en fonction de celle-ci.
  9. Procédé selon la revendication 8, caractérisé en ce que l'alimentation de la pompe de carburant (12) en carburant s'effectue exclusivement par le biais du clapet anti-retour (22) lorsque la pompe électrique supplémentaire (18) n'est pas branchée.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que la puissance d'alimentation de la pompe de carburant (12) est évaluée à l'aide d'une vitesse du moteur à combustion interne et l'on en déduit une quantité à injecter de consigne.
  11. Procédé selon l'une quelconque des revendications 7 à 10, caractérisé en ce que la puissance d'alimentation de la pompe supplémentaire (18) est accrue dans une phase de démarrage du moteur à combustion interne.
  12. Procédé selon l'une quelconque des revendications 7 à 10, caractérisé en ce que la puissance d'alimentation de la pompe supplémentaire (18) est accrue dans une phase d'accélération du moteur à combustion interne.
  13. Procédé selon l'une quelconque des revendications 7 à 10, caractérisé en ce que l'alimentation s'effectue par le biais de la pompe supplémentaire (18) dans une phase de marche à vide du moteur à combustion interne.
EP00119392A 1999-10-07 2000-09-12 Système d'alimentation en carburant et procédé pour faire fonctionner ce système Expired - Lifetime EP1091115B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948149 1999-10-07
DE19948149A DE19948149A1 (de) 1999-10-07 1999-10-07 Kraftstofförderanlage und Verfahren zum Betrieb der Kraftstofförderanlage

Publications (3)

Publication Number Publication Date
EP1091115A2 EP1091115A2 (fr) 2001-04-11
EP1091115A3 EP1091115A3 (fr) 2001-12-05
EP1091115B1 true EP1091115B1 (fr) 2005-08-17

Family

ID=7924697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119392A Expired - Lifetime EP1091115B1 (fr) 1999-10-07 2000-09-12 Système d'alimentation en carburant et procédé pour faire fonctionner ce système

Country Status (3)

Country Link
EP (1) EP1091115B1 (fr)
AT (1) ATE302342T1 (fr)
DE (2) DE19948149A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10130352A1 (de) * 2001-06-23 2003-01-02 Bosch Gmbh Robert Einspritzanlage für eine Brennkraftmaschine mit zwei Niederdruckpumpen
DE10360091A1 (de) * 2003-12-20 2005-07-21 Deutz Ag Hubkolbenbrennkraftmaschine mit einer Hilfspumpe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013368A1 (de) * 1980-04-05 1981-10-15 Daimler-Benz Ag, 7000 Stuttgart Regelung, insbesondere elektronische regelung fuer dieselmotoren
DE3707271C1 (de) * 1987-03-06 1988-05-19 Mannesmann Kienzle Gmbh Ventilanordnung fuer einen Gasabscheider
DE3937709A1 (de) * 1989-11-13 1991-05-16 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
US5598817A (en) * 1993-09-10 1997-02-04 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Fuel feeding system for internal combustion engine
JP3939779B2 (ja) * 1995-05-26 2007-07-04 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関の燃料供給のための燃料供給装置
DE19609922B4 (de) * 1996-03-14 2005-09-15 Robert Bosch Gmbh Sekundärluftsystemdiagnoseverfahren
FR2751242B1 (fr) * 1996-07-18 1998-09-25 Filtrauto Filtre a gazole pour moteur diesel et dispositif d'alimentation incluant un tel filtre
DE19648690A1 (de) * 1996-11-25 1998-05-28 Bosch Gmbh Robert Kraftstoffeinspritzsystem
JP3708702B2 (ja) * 1998-03-09 2005-10-19 三菱電機株式会社 高圧燃料ポンプのフィード圧脈動低減装置

Also Published As

Publication number Publication date
EP1091115A2 (fr) 2001-04-11
EP1091115A3 (fr) 2001-12-05
DE50010959D1 (de) 2005-09-22
DE19948149A1 (de) 2001-04-12
ATE302342T1 (de) 2005-09-15

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