EP2587044A1 - Kraftstoffeinspritzsystem in eine Brennkammer einer Brennkraftmaschine - Google Patents

Kraftstoffeinspritzsystem in eine Brennkammer einer Brennkraftmaschine Download PDF

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Publication number
EP2587044A1
EP2587044A1 EP12186311.2A EP12186311A EP2587044A1 EP 2587044 A1 EP2587044 A1 EP 2587044A1 EP 12186311 A EP12186311 A EP 12186311A EP 2587044 A1 EP2587044 A1 EP 2587044A1
Authority
EP
European Patent Office
Prior art keywords
injection system
fuel
fuel tank
point
pressure
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.)
Withdrawn
Application number
EP12186311.2A
Other languages
English (en)
French (fr)
Inventor
Olivier GUEZET
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2587044A1 publication Critical patent/EP2587044A1/de
Withdrawn legal-status Critical Current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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • F02M37/0058—Returnless fuel systems, i.e. the fuel return lines are not entering the fuel tank
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0275—Arrangement of common rails
    • F02M63/028—Returnless common rail system
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors

Definitions

  • the invention relates to the field of supplying fuel to an internal combustion engine fitted to a motor vehicle. It relates to an injection system for supplying fuel to at least one combustion chamber of an internal combustion engine fitted to a motor vehicle. It also relates to a fuel supply device comprising such an injection system. Finally, it relates to a method of assembling such a feeding device.
  • the document FR 2,817,297 discloses an injection system for supplying fuel to a combustion chamber of an internal combustion engine fitted to a motor vehicle.
  • the injection system is interposed between the internal combustion engine and a fuel tank also equipping the motor vehicle.
  • the injection system comprises a high-pressure collection chamber and a high-pressure pump which supplies the latter with fuel.
  • the high-pressure collection chamber supplies fuel at high pressure with injectors fitted to combustion chambers that the internal combustion engine comprises.
  • Each injector is provided with a respective high-pressure line which is connected with the high-pressure collecting chamber.
  • Each high pressure line is equipped with a control end line that connects the high-pressure line to the fuel tank.
  • each injector is provided with a leakage line that connects the injector to the fuel tank.
  • An object of the present invention is to provide an injection system interposed between a fuel tank and an internal combustion engine fitted to a motor vehicle, the injection system being compact, lightweight, easy to assemble and having a minimum number of elements, such an injection system is also easily and quickly connected to the fuel tank, such an injection system also offering a better compromise between a cost of implementation and an energy consumption fuel.
  • Another object of the present invention is to provide a fuel supply device comprising such an injection system and the fuel tank whose assembly between them is easy and fast.
  • a system of the present invention is a system for injecting a fuel into an internal combustion engine fitted to a motor vehicle.
  • the injection system comprises a high-pressure collection chamber.
  • the injection system comprises a single connection point with a fuel tank fitted to the motor vehicle.
  • the injection system preferably comprises a high-pressure pump equipped with a first pipe comprising the single point of connection.
  • the injection system comprises successively the single connection point, the first pipe, the high-pressure pump and the high-pressure collection chamber, in a direction of fuel flow inside the injection system.
  • the injection system advantageously comprises at least one fuel injector.
  • the injection system advantageously comprises a return channel which is interposed between the injector and a constituent return point of the first conduit.
  • a fuel supply device of the internal combustion engine of the present invention is mainly recognizable in that the supply device comprises the fuel tank and such an injection system.
  • the feed device advantageously comprises the single point of connection of the injection system and a single point of connection of the fuel tank which are in fluid relation with each other.
  • a motor vehicle of the present invention is mainly recognizable in that the motor vehicle is equipped with such a power supply device.
  • a method of assembling the supply device according to the present invention is mainly recognizable in that the method of assembling the supply device comprises a single step during which the single point of connection of the injection system and the single point of connection of the fuel tank are fluidly connected to each other.
  • a motor vehicle is equipped with an internal combustion engine 1, such as a diesel engine.
  • the motor vehicle is also equipped with a fuel tank 2 inside which a fuel 3 is stored.
  • the motor vehicle is finally provided with an injection system 4 which is intended to circulate the fuel 3 from the fuel tank 2 to the internal combustion engine 1.
  • the injection system 4 is interposed between the fuel tank 2 and the internal combustion engine 1.
  • the injection system 4 is also arranged to provide an intrinsic fuel requirement for the injection system 4.
  • the injection system 4 comprises a high-pressure pump 5 and a high-pressure collection chamber 6 which is situated downstream of the high-pressure pump 5 in a direction of circulation 7 of the fuel inside the injection system. 4.
  • the high-pressure pump 5 is provided to collect the fuel 3 inside the fuel tank 2 and supply the fuel 3 at high pressure to the high-pressure collection chamber 6.
  • the high-pressure pump 5 is preferably cooled and / or lubricated via a motor oil circuit and / or via a motor water circuit.
  • the high-pressure collection chamber 6 is adapted to receive the fuel 3 at a pressure ranging from 300 bar to 1700 bar, or even 2000 bar.
  • the high-pressure collector chamber 6, commonly known as the common rail, according to the common rail English terminology, consists mainly of a single high-pressure conduit.
  • the fuel tank 2 is connected to the high-pressure pump 5 via a first pipe 8.
  • the high-pressure pump 5 is also in fluid communication with the high-pressure collecting chamber 6 via a second conduit 9.
  • the high-pressure collection chamber 6 is in relation to at least one injector 10 via a respective conduit 11.
  • the injectors 10 are in plurality and each injector 10 is assigned to a chamber of respective combustion of the internal combustion engine 1.
  • the injectors 10 are in particular injectors piezoelectric which are able to precisely control a quantity of fuel delivered to the combustion chamber 12 to which each injector 10 is respectively affected.
  • the injection system 4 of the present invention comprises a single point of connection 13 with the fuel tank 2.
  • the single point of connection 13 between the injection system 4 and the fuel tank 2 constitutes the first line 8
  • Such uniqueness facilitates a connection of the injection system 4 with the fuel tank 2.
  • the latter is affected only by a single relationship with the injection system 4 which reduces a size and weight of the system. 4. Consequently, the injection system 4 of the present invention does not include any fuel return to the fuel tank 2.
  • no pipe, other than the first pipe 8 connects any element of the system. 4 to the fuel tank 2.
  • the present invention proposes to overcome any fuel return from the injection system 4 to the fuel tank. e fuel tank 2.
  • injection system 4 is lightweight, compact, simple to implement, less energy for fuel circulation 3 and contributes to a reduction of carbon dioxide emissions by the motor vehicle that the injection system 4 team.
  • each injector 10 is equipped with a return channel 14 which extends between the injector 10 and a return point 15.
  • the return channel 14 is shown in dotted line.
  • the return point 15 is located on the first pipe 8 downstream of the single connection point 13 in the direction of circulation 7 of the fuel inside the injection device 4. In other words, and against the habits taken in the field, the return point 15 is not constitutive of the fuel tank 2.
  • the first pipe 8 is provided with a fuel filter and / or of a booster pump and / or any other element, the position of the return point 15 between its elements is indifferent.
  • a method of assembling the feed device 16 comprises a single step during which the single connection point 13 of the injection system 4 and the single connection point 17 of the fuel tank 2 are set. in fluidic relation, without any other connection between the injection system 4 and the fuel tank 2 is necessary.
  • the method is carried out in a single pass which consists in fluidically connecting the single point of connection 13 of the injection system 4 and the single connection point 17 of the fuel tank 2 to allow a flow of the fuel 3 since the fuel tank 2 to the injection system 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP12186311.2A 2011-10-26 2012-09-27 Kraftstoffeinspritzsystem in eine Brennkammer einer Brennkraftmaschine Withdrawn EP2587044A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1159731A FR2981990A1 (fr) 2011-10-26 2011-10-26 Systeme d'injection d'un carburant a l'interieur d'une chambre de combustion d'un moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP2587044A1 true EP2587044A1 (de) 2013-05-01

Family

ID=46880642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12186311.2A Withdrawn EP2587044A1 (de) 2011-10-26 2012-09-27 Kraftstoffeinspritzsystem in eine Brennkammer einer Brennkraftmaschine

Country Status (2)

Country Link
EP (1) EP2587044A1 (de)
FR (1) FR2981990A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730526A1 (fr) * 1995-02-13 1996-08-14 Marwal Systems Dispositif d'alimentation en carburant pour vehicule automobile avec regulation de pression
EP0780567A1 (de) * 1995-12-18 1997-06-25 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Kraftstoff-Fördersystem
FR2817297A1 (fr) 2000-11-29 2002-05-31 Bosch Gmbh Robert Systeme d'injection de carburant dans un moteur a combustion interne
DE102006006557A1 (de) * 2006-02-13 2007-08-23 Siemens Ag Kraftstoffeinspritz-System
WO2009118209A1 (de) * 2008-03-25 2009-10-01 Robert Bosch Gmbh Kraftmaschine sowie verfahren zum verlängern der nutzungsdauer von kraftstoff

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730526A1 (fr) * 1995-02-13 1996-08-14 Marwal Systems Dispositif d'alimentation en carburant pour vehicule automobile avec regulation de pression
EP0780567A1 (de) * 1995-12-18 1997-06-25 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Kraftstoff-Fördersystem
FR2817297A1 (fr) 2000-11-29 2002-05-31 Bosch Gmbh Robert Systeme d'injection de carburant dans un moteur a combustion interne
DE102006006557A1 (de) * 2006-02-13 2007-08-23 Siemens Ag Kraftstoffeinspritz-System
WO2009118209A1 (de) * 2008-03-25 2009-10-01 Robert Bosch Gmbh Kraftmaschine sowie verfahren zum verlängern der nutzungsdauer von kraftstoff

Also Published As

Publication number Publication date
FR2981990A1 (fr) 2013-05-03

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