EP3759337A1 - Dispositif de distribution d'un système d'injection directe à rampe commune - Google Patents

Dispositif de distribution d'un système d'injection directe à rampe commune

Info

Publication number
EP3759337A1
EP3759337A1 EP19710354.2A EP19710354A EP3759337A1 EP 3759337 A1 EP3759337 A1 EP 3759337A1 EP 19710354 A EP19710354 A EP 19710354A EP 3759337 A1 EP3759337 A1 EP 3759337A1
Authority
EP
European Patent Office
Prior art keywords
distributor
pressure
line
throttle
rail
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Withdrawn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
EP19710354.2A
Other languages
German (de)
English (en)
Inventor
Robby Gerbeth
Oscar Blasco
Hubert Lugger
Frank MLICKI
Thilo Kreeb
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.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen GmbH
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 MTU Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Publication of EP3759337A1 publication Critical patent/EP3759337A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • F02M55/004—Joints; Sealings
    • 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
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M63/0285—Arrangement of common rails having more than one common rail
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors
    • F02M2200/247—Pressure sensors
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/28—Details of throttles in fuel-injection apparatus
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8076—Fuel injection apparatus manufacture, repair or assembly involving threaded members

Definitions

  • the invention relates to a distributor device of a common rail system for an internal combustion engine according to the closer defined in the preamble of claim 1.
  • Distributor device is supplied under high pressure fuel usually via a running in the axial direction of the distributor device high pressure line to injectors for injection into a combustion chamber.
  • a plurality of supply lines branch off from the high-pressure line, which are each in operative connection with an injector having a pre-throttle and an individual store, which are arranged inside a cylinder head cover.
  • Distributor device and the individual memories are so hydraulically matched to the desired supply of injectors with fuel that after an injection process, the respective individual memory is refilled with fuel.
  • each injector is assigned a pressure sensor.
  • the provision of the pressure sensor requires a complex executed injector housing with correspondingly sealed high pressure areas.
  • the injector housing obtains increased complexity when high pressure sealing sites such. B. for a pressure sensor, must be monitored and this detection holes must be introduced.
  • sealing points can be positioned close to each other, for example, with a so-called top-feed connection concept, to minimize the cost of detection holes, but the design of the
  • Cylinder head cover very expensive.
  • a Dmclaness adopted for a common rail system with individual memories is known from DE 10 2006 034 515 B3, wherein the pressure measuring device is arranged in the sealing plug of the single memory.
  • leakage detection is difficult.
  • Pressure measuring device executed removal hole downstream of the Drosselemcardi assigned such that the throttle device is arranged in the supply line and arranged in the distribution device removal hole is connected downstream of the throttle device to the supply line.
  • a distributor device or air-gap device according to the invention allows a simple construction of the injectors and the cylinder head cover, since the throttle device arranged in the region of the injector in known embodiments and the pressure measuring device out of the injector and the cylinder head cover out to the
  • the invention offers the advantage that a connection of the high-pressure line to the injector is freely selectable and can be designed, for example, as an external top-feed connection or as an internal connection by means of a pressure pipe connection. Because the pressure measuring device and the restrictor are arranged in the region of the distributor device, the individual reservoir pressure functionality can be implemented in a modular manner and the injector body can be standardized.
  • the inventive solution short leads to the injector can be formed, resulting in a reduction of vibrations, reduced loads on seals and a reduced dead time, the reduced dead time leads to a more precise detection of a start of injection and an injection end.
  • FIG. 1 is a simplified schematic diagram of a common rail system with a
  • Distributor device comprising a plurality of distribution devices formed as rails and distribution blocks;
  • FIG. 2 shows a three-dimensional view of a distributor device of the distributor device of FIG. 1 designed as a rail;
  • FIG. 3 shows a plan view of the rail according to FIG. 2;
  • FIG. 4 shows a sectional view of the rail according to FIG. 3 along the line 1V-1V;
  • FIG. 5 shows a sectional view of the rail according to FIG. 4 along the line VV;
  • FIG. 6 shows a three-dimensional view of a further distribution device, which is designed as a distributor block, of the distributor device according to FIG. 1;
  • FIG. 7 is a longitudinal sectional view of the manifold block of FIG. 6; FIG. and
  • FIG. 8 shows a simplified section of the common rail system according to FIG. 1, the arrangement of the distributor device being visible on a crankcase.
  • a common rail system 1 of an internal combustion engine which is a low-pressure pump 3 for conveying fuel from a fuel tank 2, a variable intake throttle 4 for influencing the fuel flow rate flowing through, a high-pressure pump 5 to promote the fuel with pressure increase and a distributor device 6.
  • the distributor device 6 is designed for storing the fuel and for distributing the fuel to a plurality of injectors 7 shown in simplified fashion and connected to a single accumulator 8 or integrally formed therewith, by means of which fuel can be injected into a combustion chamber of an internal combustion engine.
  • the distributor device 6 is designed segment-wise with two distributor devices 9, 10 which are constructed essentially identically as rails, and two further distributor devices 11, 12 which are essentially constructed as distributor blocks, with a rail 9 initially followed by a high-pressure pump 5 in the conveying direction of the fuel Distributor block 11 and then another rail 10 is provided with a subsequent manifold block 12. This can be followed by further segments with distributor devices.
  • FIG. 2 to FIG. 5 show in more detail the distributor device 9 designed as a rail, which according to FIG. 8 can be designed as a so-called slim rail and arranged on a crankcase 25.
  • the rail 9 has a substantially in the longitudinal direction or in the axial direction of the distributor device 9 extending and formed as a longitudinal bore
  • High-pressure line 14 which is connected in a first axial end portion 15 of the rail 9 with the high pressure pump 5 and in a second axial end portion 16 with the subsequent manifold block 11.
  • Supply line 17, 18, 19 is hydraulically connected to a single memory 8 and an injector 7.
  • a distance D1, D2 present in the longitudinal direction between respectively adjacent connection regions 20 and 21 or 21 and 22 corresponds in particular to a distance between two adjacent cylinders of the internal combustion engine.
  • each supply line 17, 18, 19 is associated with a throttle device 26, 27, 28 and a removal bore 29, 30, 31 for pressure measurement, wherein the throttle device 26, 27 and 28 in the respective supply line 17, 18, 19 respectively upstream of the respective removal bore 29, 30 and 31 is arranged.
  • the throttle devices 26, 27, 28 thereby form a pre-throttle for the associated injector 7.
  • the take-off holes 29, 30, 31 are arranged here in an axial longitudinal sectional plane parallel to the plane in which the high-pressure line 14 extends, with the supply lines 17 and 18 at the respective ends 15, 16 of the rail 9 connected Ab Spotifybohronne 29, 30 in the longitudinal direction of the rail 9 and the take-off bore 31 of the central supply line 19 perpendicular thereto.
  • pressure measuring devices 33, 34, 35 are provided, which are each connected in the region of the removal holes 29, 30, 31 with the rail 9 and screwed, for example, to this.
  • the pressure measuring devices 33, 34, 35 which may be designed as conventional high-pressure sensors with appropriate on-site Elelctronik and may be connected to an electronic control unit of the internal combustion engine, is a pressure in the supply lines 17, 18, 19, the pressure in the respective individual memory 8 of the injector 7 corresponds, measurable.
  • Fig. 6 and Fig. 7 designed as a manifold block further distribution eimichtung 11 is shown in more detail.
  • the distributor block 11 is comparable to the rail 9 with a
  • the distributor block 11 has only two supply lines 38, 39 which branch off from the high-pressure line 37 and are arranged comparable to the supply lines 17 and 18 of the rail 9.
  • the supply lines 38, 39 are in turn each designed with a connection region 49, 50, via which the respective supply line 38, 39 is connected to the individual storage 8 and the injector 7.
  • Each supply line 38, 39 are in turn a throttle device 42, 43 and a removal bore 44, 45, which cooperates with a pressure measuring device 46, 47 assigned.
  • the distributor block 11 is thus designed substantially analogously to the rail 9 with a shorter longitudinal extent.
  • Distribution arrangement distribution block 12 V distribution direction, distribution block

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un dispositif de distribution d'un système d'injection directe à rampe commune pour un moteur à combustion interne. Le dispositif de distribution est réalisé avec au moins un système de distribution (9) présentant un conduit à haute pression (14) de carburant et avec plusieurs conduits d'arrivée (17, 18, 19) formant un embranchement avec le conduit à haute pression (14) à l'intérieur du système de distribution (9), lesquels mènent respectivement à un accumulateur individuel (8) et à un injecteur (7). Un système d'étranglement (26, 27, 28) et, en aval du système d'étranglement (26, 27, 28), un alésage de mesure (29, 30, 31) réalisé pour coopérer avec un système de mesure de pression (33, 34, 35) sont associés au conduit d'arrivée (17, 18, 19) de telle manière que le système d'étranglement (26, 27, 28) est disposé dans le conduit d'arrivée (17, 18, 19) et que l'alésage de mesure (29, 30, 31) disposé dans le système de distribution (9) est relié en aval du système d'étranglement (26, 27, 28) au conduit d'arrivée (17, 18, 19).
EP19710354.2A 2018-03-02 2019-03-04 Dispositif de distribution d'un système d'injection directe à rampe commune Withdrawn EP3759337A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018104848.3A DE102018104848B3 (de) 2018-03-02 2018-03-02 Verteilervorrichtung eines Common-Rail-Systems
PCT/EP2019/055348 WO2019166670A1 (fr) 2018-03-02 2019-03-04 Dispositif de distribution d'un système d'injection directe à rampe commune

Publications (1)

Publication Number Publication Date
EP3759337A1 true EP3759337A1 (fr) 2021-01-06

Family

ID=65729326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19710354.2A Withdrawn EP3759337A1 (fr) 2018-03-02 2019-03-04 Dispositif de distribution d'un système d'injection directe à rampe commune

Country Status (5)

Country Link
US (1) US11199168B2 (fr)
EP (1) EP3759337A1 (fr)
CN (1) CN111954757B (fr)
DE (1) DE102018104848B3 (fr)
WO (1) WO2019166670A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2583345B (en) * 2019-04-24 2021-06-09 Delphi Tech Ip Ltd Common rail assembly
US11821397B2 (en) 2019-07-31 2023-11-21 Cummins Inc. Modular and scalable rail fuel system architecture
CN112502877A (zh) * 2020-11-23 2021-03-16 沪东重机有限公司 一种双燃料柴油机用集成式引燃油供油系统及其工作方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4022853B2 (ja) * 2001-11-29 2007-12-19 株式会社デンソー コモンレール式燃料噴射システム
JP4492513B2 (ja) * 2005-10-06 2010-06-30 株式会社デンソー 蓄圧式燃料噴射装置
DE102006003639A1 (de) 2006-01-26 2007-08-02 Robert Bosch Gmbh Hochdruckspeicherkörper mit integriertem Verteilerblock
DE102006034515B3 (de) 2006-07-26 2007-05-10 Mtu Friedrichshafen Gmbh Druckmess-Einrichtung für ein Common-Railsystem mit Einzelspeichern
JP4616817B2 (ja) * 2006-11-10 2011-01-19 三菱重工業株式会社 エンジンの蓄圧式燃料噴射装置
DE102007039892A1 (de) * 2007-08-23 2009-02-26 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
JP4840391B2 (ja) 2008-03-28 2011-12-21 株式会社デンソー 燃圧センサ搭載構造及び燃圧検出システム
DE102008054805B4 (de) * 2008-12-17 2022-07-07 Robert Bosch Gmbh Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine
DE102009055129A1 (de) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Brennstoffeinspritzeinrichtung
DE102014007963A1 (de) 2014-06-04 2015-12-17 Man Diesel & Turbo Se Verfahren zum Betreiben einer Brennkraftmaschine und Motorsteuergerät
JP6569611B2 (ja) * 2016-07-07 2019-09-04 株式会社デンソー 特性検出装置、および、それを用いた制御装置

Also Published As

Publication number Publication date
US20200392927A1 (en) 2020-12-17
WO2019166670A1 (fr) 2019-09-06
CN111954757A (zh) 2020-11-17
CN111954757B (zh) 2022-04-29
DE102018104848B3 (de) 2019-07-04
US11199168B2 (en) 2021-12-14

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