EP1554486B1 - Ensemble pompe - Google Patents

Ensemble pompe Download PDF

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Publication number
EP1554486B1
EP1554486B1 EP03757927A EP03757927A EP1554486B1 EP 1554486 B1 EP1554486 B1 EP 1554486B1 EP 03757927 A EP03757927 A EP 03757927A EP 03757927 A EP03757927 A EP 03757927A EP 1554486 B1 EP1554486 B1 EP 1554486B1
Authority
EP
European Patent Office
Prior art keywords
fuel
pump
tank
starting
electric motor
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
EP03757927A
Other languages
German (de)
English (en)
Other versions
EP1554486A1 (fr
Inventor
Andreas Glenz
Eberhard Holder
Guenter Hoenig
Martin Matt
Andreas Posselt
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.)
Robert Bosch GmbH
Mercedes Benz Group AG
Original Assignee
Robert Bosch GmbH
Daimler 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 Robert Bosch GmbH, Daimler AG filed Critical Robert Bosch GmbH
Publication of EP1554486A1 publication Critical patent/EP1554486A1/fr
Application granted granted Critical
Publication of EP1554486B1 publication Critical patent/EP1554486B1/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
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F02M1/16—Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
    • F02M1/165—Vaporizing light fractions from the fuel and condensing them for use during starting
    • 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

Definitions

  • the invention relates to a fuel supply system for an internal combustion engine according to the features specified in the preamble of claim 1.
  • Such a fuel supply system is off DE 197 34 493 Cl known.
  • This fuel supply system is equipped with a liquid fuel tank from which a fuel supply line leads to an injection device, with a low-boiling fuel vaporization and condensing device connected to the fuel tank, with a condensate intermediate tank downstream of the evaporation and condensation device from which a condensate line leads to a control valve controlling the supply to the injection device, and provided with a residual fuel return line discharging the higher boiling residual fuel fractions arising in the evaporating and condensing device.
  • the residual fuel return line opens into an additional tank, from which a residual fuel supply line leads to a switching valve arranged in the fuel supply line.
  • the control of the valve is such that the residual fuel from the residual fuel supply line is fed into the leading to the injection fuel supply line at least partially at full load of the internal combustion engine.
  • a niche example of such a fuel supply system is in US 6067969 given.
  • a fuel supply system with a fuel fractionator for producing low-boiling fuel components are required on board a motor vehicle operated with internal combustion engines, during the operation of the motor vehicle resulting pollutant emissions in the cold start and / or warm-up phase reduce emissions and reduce emissions overall.
  • Such systems are often relatively complex in terms of apparatus and designed consuming and therefore require a large volume of construction with a corresponding weight.
  • the object of the invention is therefore to provide a fuel supply system for an internal combustion engine available, which has only a small volume and a low construction weight in conjunction with a reduced during the various phases of operation of the motor vehicle pollutant emission.
  • the invention achieves the above object by forming the gas delivery pump, the electric motor and the fuel pump in the fuel supply system, a pump unit, wherein the electric motor is installed so that it can drive both pumps.
  • a clutch is provided between the fuel pump and the electric motor and / or between the electric motor and the gas delivery pump.
  • a very advantageous development of the invention according to claim 2 is that at least one control valve on the suction and pressure side of the fuel pump is arranged that liquid fuel from the fuel tank, also referred to as the main fuel tank, or fuel with low-boiling fractions from the additional tank, also referred to as starting fuel tank, with the fuel pump is selectively eligible.
  • excess fuel with low-boiling fractions via a fuel return line in the additional tank can be traced by means of fuel pump.
  • a starting fuel won once to have it available for example, in cold start situations to reduce exhaust emissions in the shortest possible time. Due to the significant reduction in pollutant emissions, especially in the emission of hydrocarbons, this advantageously results firstly in a reduction of the noble metal content in the exhaust gas catalysts, on the other hand a loss of close-coupled catalysts, which would be subject to severe aging due to the high temperatures in this area.
  • the pump unit of the fuel supply system is installed in the fuel tank of a vehicle.
  • the device according to the invention is due to the advantages mentioned for use in all mobile systems, such as passenger and commercial vehicles.
  • Fig. 1 comprises as a whole system of a fuel supply system in the Fig. 2 to 6 illustrated operating modes or functions of the system: operation with main fuel, purging with starting fuel, operation with starting fuel, initial filling with starting fuel and the operation of the gas pump, which are explained below.
  • the overall system advantageously allows, on the one hand, the production of starting fuel and, on the other hand, simultaneously the management of the delivery of main fuel and starting fuel.
  • Fig. 1 shows a pump unit consisting of a fuel pump 2, an electric motor 3 and a gas pump 4. Between the fuel pump 2 and the electric motor 3 is a clutch 7 and between the electric motor 3 and gas pump 4, a clutch 8 is provided.
  • valve 5 The arranged between a valve 5 and 6 fuel pump 2 sucks main fuel from the main fuel tank 1, with appropriate valve position 5. Via a valve 6, the main fuel enters the main fuel line 9 to an injector 12. Between valve 6 and the Injector 12 is located in the main fuel line 9, a fuel pressure regulator 11, wherein starting from the fuel pressure regulator 11, a return line 14 is provided to the main fuel tank 1. Between the valve 6 and the fuel pressure regulator 11 is still in the main fuel line 9, an additional valve 10th
  • valve 5 is now adjusted so that the driven by the electric motor 3 fuel pump 2 sucks starting fuel from a starting fuel tank 13, which can be introduced either via the valve 6 in the main fuel line 9 or in the starting fuel line 15.
  • a fuel pressure regulator 17, starting from the fuel pressure regulator 17, a return line 18 is provided to the starting fuel tank 13.
  • valve 6 and the fuel pressure regulator 17 is also an additional valve sixteenth
  • the principle drawing shows the operation of a fuel supply system with main fuel after completion of the warm-up or warm start of the motor vehicle.
  • the electric motor 3 drives the fuel pump 2 via the closed clutch 7, the clutch 8 being open.
  • Valve 5, in particular a 3-way valve, preferably an electrically operated solenoid valve, is set so that the fuel pump 2 sucks main fuel from the main fuel vehicle tank 1.
  • a valve 6, in particular a 3-way valve, preferably an electrically operated solenoid valve the main fuel enters the main fuel line 9 to the injection valve 12, which controls the injection in the internal combustion engine, not shown.
  • an injector with side check valve can also be provided with a lance-shaped fuel distributor with built-in lance check valve.
  • a fuel pressure regulator 11 regulates the injection pressure in the internal combustion engine. Between the valve 6 and the fuel pressure regulator 11 is located in the main fuel line, an additional valve 10, preferably a check valve.
  • Fig. 3 describes schematically a purging of the fuel pump 2 with starting fuel before starting the still cold internal combustion engine.
  • the fuel pump 2 is a dead volume, which is filled with main fuel from the last shutdown of the vehicle.
  • the electric motor 3 drives the fuel pump 2 via the closed clutch 7.
  • Clutch 8 is open in this process.
  • the valve 5 is set so that the fuel pump 2 sucks starting fuel from the starting fuel tank 13 and conveys via a valve 6 in the main fuel line 9.
  • the starting fuel passes through a fuel pressure regulator 11 and a fuel return line 14 into the main fuel tank 1.
  • valve 6 is switched so that the starting fuel in the starting fuel line 15, shown in Fig. 4 , arrives.
  • an additional valve 16 preferably a check valve.
  • the cold combustion engine can now be started. During cold start and warm-up of the engine, the operation takes place with starting fuel. After flushing with starting fuel accordingly Fig. 3 is done, the valve 6, as in Fig. 4 shown adjusted so that the excess starting fuel over the fuel pressure regulator 17 and a starting fuel return line 18 passes back into the starting fuel tank 13. This saves in extremely advantageous starting fuel.
  • the system switches to main fuel operation, as described in Fig. 2 is described.
  • the initial filling with starting fuel takes place, as in Fig. 5 shown at initial startup or after a repair, since in this situation, no starting fuel in the starting fuel tank 13 and in the heavy fuel line 15 is located. So that even the first start can be done with starting fuel and the starting fuel line 15 can be filled, a small amount of starting fuel is filled in the main fuel tank 1.
  • the electric motor 3 drives the fuel pump 2 via the closed clutch 7.
  • the clutch 8 is opened here.
  • Valve 5 is set so that the fuel pump 2 sucks starting fuel from the main fuel tank 1. Via the valve 6, the starting fuel enters the starting fuel line 15 to the injection valve 12 of the internal combustion engine. The combustion engine can now be started.
  • the excess starting fuel returns to the starting fuel tank 13 and fills it up. If during the warm-up of the level gauge 19 in the starting fuel tank, the upper limit is displayed, the valve 5 is switched in such a way that the fuel pump 2 now sucks starting fuel from the starting fuel tank, as in Fig. 4 shown until warm-up is complete. Thereafter, the main fuel tank 1 can be filled with main fuel.
  • the consumed starting fuel must be replenished by the operation of the gas pump 4 of the fuel fractionation unit.
  • Fig. 6 shown schematically.
  • the clutch 8 is closed during operation with main fuel, so that the gas pump 4 is driven. This sucks air and fuel vapor from the main fuel tank 1 and compresses the mixture. In a subsequent heat exchanger 20, the mixture cools, so that the fuel components condense. The remaining air promotes the fuel condensate in the starting fuel tank 13 is relaxed after the pressure relief valve 21 to ambient pressure and passes through a manifold back into the main fuel tank 1. When rising of the air bubbles accumulate with the lower-boiling fuel component. The cycle starts again.
  • the summary of the fuel supply unit comprising a pump unit and a starting fuel tank - which in the main fuel tank of an internal combustion engine are integrated into a structural unit, advantageously on the one hand a reduction in the volume of such a fuel supply unit and a much lower construction effort, on the other hand eliminates by the use of the electric motor as a drive for both pump systems - fuel pump and Gas jospumpe- an additional drive, as would have been necessary in the case of separate operation of both systems.
  • the elimination of the additional drive therefore leads to a cost reduction in the production of the component.
  • the case of maintenance of the fuel supply unit can be removed from the fuel tank without much effort.
  • the encapsulation of the pump unit further results in a muffled noise development.
  • the so-designed fuel supply unit can be easily integrated into each fuel tank, without the respective fuel tank must be adapted thereto. This significantly reduces the development times and saves the cost of adaptation to the respective fuel tank of a vehicle.
  • the invention also allows for initial commissioning of a vehicle by means of a pump (the fuel pump 2) by appropriately switching the valves 5 and 6, the immediate filling of the main fuel tank with starting fuel. This in turn contributes to the emission reduction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Dispositif d'alimentation en carburant pour un moteur à combustion interne. La pompe de refoulement de gaz contenue dans le dispositif d'alimentation en carburant, la pompe à carburant et le moteur électrique forment un ensemble pompe, le moteur électrique étant conçu de manière telle qu'il peut actionner les deux pompes.

Claims (6)

  1. Installation d'alimentation en carburant conçu pour un moteur à combustion interne doté d'un réservoir de carburant pour du carburant liquide, à partir duquel une conduite de carburant conduit vers un dispositif d'injection, d'un dispositif de fractionnement pour séparer des fractions de carburant à point d'ébullition bas, comprenant une unité fonctionnelle et de mémoire, l'unité de mémoire comportant une pompe de refoulement des gaz (4) et un moteur électrique (3) et l'unité de mémoire comprenant un réservoir supplémentaire pour les fractions de carburant à point d'ébullition bas, caractérisée en ce que la pompe de refoulement des gaz (4), le moteur électrique (3) et la pompe à carburant forment un ensemble pompe, le moteur électrique (3) étant conçu de telle manière qu'il puisse entraîner les deux pompes.
  2. Installation d'alimentation en carburant selon la revendication 1, caractérisée en ce que sur le côté d'aspiration et de pression de la pompe à carburant au moins une soupape de réglage est disposée de telle sorte que le carburant liquide puisse être déplacé à volonté à partir du réservoir de carburant ou le carburant avec des fractions à point d'ébullition bas à partir du réservoir supplémentaire par la pompe à carburant.
  3. Installation d'alimentation en carburant selon la revendication 1, caractérisée en ce que l'ensemble pompe est monté dans le réservoir de carburant d'un véhicule.
  4. Installation d'alimentation en carburant selon la revendication 2, caractérisée en ce que l'excédent de carburant avec des fractions à point d'ébullition bas peut être renvoyé au moyen de la pompe à carburant par une conduite de retour de carburant dans le réservoir supplémentaire.
  5. Installation d'alimentation en carburant selon la revendication 1, caractérisée en ce que entre la pompe à carburant et le moteur électrique et / ou entre le moteur électrique et la pompe de refoulement des gaz est prévu un accouplement.
  6. Installation d'alimentation en carburant selon la revendication 2, caractérisée en ce que lors de la première mise en service ou lors de la réparation d'un véhicule, il est possible d'effectuer un premier remplissage du réservoir supplémentaire de carburant de démarrage à partir du réservoir de carburant par une commande adéquate de la soupape de réglage au moyen de la pompe à carburant.
EP03757927A 2002-10-26 2003-10-09 Ensemble pompe Expired - Lifetime EP1554486B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10249953 2002-10-26
DE10249953A DE10249953A1 (de) 2002-10-26 2002-10-26 Pumpeneinheit
PCT/EP2003/011156 WO2004038211A1 (fr) 2002-10-26 2003-10-09 Ensemble pompe

Publications (2)

Publication Number Publication Date
EP1554486A1 EP1554486A1 (fr) 2005-07-20
EP1554486B1 true EP1554486B1 (fr) 2011-01-19

Family

ID=32114875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03757927A Expired - Lifetime EP1554486B1 (fr) 2002-10-26 2003-10-09 Ensemble pompe

Country Status (5)

Country Link
US (1) US7055511B2 (fr)
EP (1) EP1554486B1 (fr)
JP (1) JP4169005B2 (fr)
DE (2) DE10249953A1 (fr)
WO (1) WO2004038211A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1969217T3 (da) 2005-11-26 2012-02-20 Exen Holdings Llc Kombineret injektionssystem til flere brændstoffer til interne forbrændings- og turbinemotorer
DE102008041067A1 (de) * 2008-08-07 2010-02-11 Robert Bosch Gmbh Druckpumpenvorrichtung für ein Hybridfahrzeug
US8333171B2 (en) * 2009-02-06 2012-12-18 Exen Holdings, Llc Homogenizing fuel enhancement system
US10539107B2 (en) * 2013-04-09 2020-01-21 Wartsila Finland Oy Fuel injection unit and fuel feeding arrangement
FR3021359B1 (fr) * 2014-05-26 2019-06-07 Safran Power Units Dispositif et procede de prechauffage de carburant dans une turbomachine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640254A (en) * 1970-02-05 1972-02-08 Frank A Manfredi System for reducing and controlling exhaust emissions from internal combustion engines
DE3409566C3 (de) * 1984-03-15 1993-12-02 Rexroth Mannesmann Gmbh Getriebeanordnung, insbesondere für einen Fahrzeugantrieb
DE4004500A1 (de) 1990-02-14 1991-08-22 Daimler Benz Ag Auffang- und sammeleinrichtung von kraftstoffdaempfen in kraftstoffanlagen
US5146901A (en) 1992-02-03 1992-09-15 General Motors Corporation Vapor suppressing fuel handling system
US5275145A (en) 1992-12-07 1994-01-04 Walbro Corporation Vapor recovery system for motor vehicles
DE19549507C2 (de) 1995-04-12 2002-06-06 Bosch Gmbh Robert Einrichtung zum Fördern von Kraftstoff aus einem Vorratstank zu einer Brennkraftmaschine eines Kraftfahrzeuges
DE19530421A1 (de) 1995-08-18 1997-02-20 Vdo Schindling Fördereinheit
DE19734493C1 (de) * 1997-08-08 1998-11-19 Daimler Benz Ag Kraftstoffversorgungsanlage für eine Brennkraftmaschine
US5992899A (en) 1997-09-17 1999-11-30 Becton, Dickinson And Company Adapter for mounting a fluid handling device on a catheter tubing
DE19853145A1 (de) 1998-11-18 2000-05-25 Ostermann & Scheiwe Gmbh & Co Beschichtungsstoff, insbesondere für poröse oder penetrationsfähige Oberflächen
DE19946606B4 (de) * 1999-09-29 2013-07-04 Robert Bosch Gmbh Vorrichtung zum Bilden eines Kraftstoff-Luftgemischs für einen Verbrennungsmotor während einer Warmlaufphase
JP2004506838A (ja) 2000-08-14 2004-03-04 スタナディーン　コーポレイション 磁気連結式燃料噴射ポンプ
DE10064592C2 (de) 2000-12-22 2003-12-11 Siemens Ag Entlüftungseinrichtung
US6711893B2 (en) * 2001-03-27 2004-03-30 Toyota Jidosha Kabushiki Kaisha Fuel supply apparatus for an internal combustion engine

Also Published As

Publication number Publication date
US7055511B2 (en) 2006-06-06
WO2004038211A1 (fr) 2004-05-06
DE10249953A1 (de) 2004-05-19
DE50313425D1 (de) 2011-03-03
US20050224056A1 (en) 2005-10-13
JP4169005B2 (ja) 2008-10-22
EP1554486A1 (fr) 2005-07-20
JP2006504027A (ja) 2006-02-02

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