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WO2019138009A1 - Injecteur servant à doser un carburant gazeux, système d'injection de gaz muni dudit injecteur et procédé permettant de faire fonctionner ledit injecteur - Google Patents

Injecteur servant à doser un carburant gazeux, système d'injection de gaz muni dudit injecteur et procédé permettant de faire fonctionner ledit injecteur Download PDF

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Publication number
WO2019138009A1
WO2019138009A1 PCT/EP2019/050577 EP2019050577W WO2019138009A1 WO 2019138009 A1 WO2019138009 A1 WO 2019138009A1 EP 2019050577 W EP2019050577 W EP 2019050577W WO 2019138009 A1 WO2019138009 A1 WO 2019138009A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
injector
nozzle needle
liquid medium
needle
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.)
Ceased
Application number
PCT/EP2019/050577
Other languages
German (de)
English (en)
Inventor
Benedikt Leibssle
Martin Katz
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
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2019138009A1 publication Critical patent/WO2019138009A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0251—Details of actuators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0694—Injectors operating with a plurality of fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/026—Lift valves, i.e. stem operated valves
    • F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/026—Lift valves, i.e. stem operated valves
    • F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
    • F02M21/0266—Hollow stem valves; Piston valves; Stems having a spherical tip
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the invention relates to an injector for metering of gaseous fuel, as used, for example, to introduce gaseous fuels directly into egg nen combustion chamber of an internal combustion engine. Moreover, the invention relates to a Gaseinblassystem with such an injector and a procedural ren for operating such an injector.
  • Injectors for introducing gaseous fuel directly into a combustion chamber of an internal combustion engine are known from the prior art, example, from DE 10 2015 209 134 Al.
  • the injector has a longitudinally movably arranged in an injector nozzle needle, which cooperates with a nozzle seat for opening and closing a flow cross-section. Downstream of the flow cross-section, several injection openings are formed in the injector body, through which the gaseous fuel passes, so that it is optimally distributed into the combustion chamber.
  • the hopefuldüsende gas is under a relatively high pressure of 300 to 500 bar, which causes correspondingly high forces on the nozzle needle in particular in the longitudinal direction.
  • a servo-hydraulic principle is used to control the longitudinal movement of the nozzle needle.
  • a control valve By a control valve, the pressure in the control room can vary, so that thus also acting in the closing direction hydraulic force on the Dü sennadel can be changed. This is a control possibility of Düsenna del given.
  • the gaseous fuel is made available via a compressor and a high-pressure gas storage, with which the injector is connected.
  • the system is designed to provide the maximum gas pressure, eg 500 bar.
  • the maximum gas pressure eg 500 bar.
  • the gas pressure must be lowered, which is most rapidly achieved by the fact that gas is returned from the high-pressure accumulator into the tank or is otherwise blown off.
  • the injector for metering of gaseous fuel according to the invention has the advantage that it is an internal combustion engine with high efficiency operable, with different gas pressures can be gedüst in the combustion chamber without the gas pressure of the supply system must be lowered from.
  • the injector on an injector in which a piston-shaped nozzle needle is arranged longitudinally displaceable, which cooperates with a sealing surface with a nozzle body formed in the injector to open and close a flow cross-section, can flow through the gaseous ger fuel an injection port.
  • a control chamber is formed, which is bounded by the sealing surface facing away from the end face of the nozzle needle and which can be filled with a liquid medium, wherein in the control chamber an alternating fluid pressure is adjustable, wherein the pressure in the control chamber, a closing force in the direction of the sealing seat the nozzle needle is exercised.
  • a counter-pressure chamber is out forms, which is filled with the liquid medium and which acts on a counter surface of the nozzle needle so that thereby a hydraulic force acting in the axial direction of the nozzle needle force is applied, which is directed opposite to the hydraulic force in the control chamber.
  • the movement of the nozzle needle is done by the interplay of hydrauli's forces on the one hand in the control room and on the other hand in the counter-pressure chamber. If there is a relatively high pressure of the liquid medium, the opening forces are correspondingly high on the nozzle needle, since after a pressure drop in the control chamber, a high hydraulic pressure in the back pressure chamber acts on the nozzle needle.
  • a large amount of gas can be introduced faster with the full gas pressure in the combustion chamber.
  • the nozzle needle has an enlarged diameter portion, on which the end face is formed and limits the counter-pressure space with one of the end face opposite Ge gensynthesis.
  • the counter-pressure space is formed in an advantageous manner as a ring space surrounding the nozzle needle, which can also be implemented in a simple manner by a corresponding shape of the injector body.
  • control chamber can be filled with the liquid medium via an inlet throttle formed in the injector body.
  • the nozzle needle is formed as a hollow needle having a longitudinal bore with a longitudinally displaceably arranged inside needle, the menwirkt together with a formed in the nozzle needle held Ren nozzle seat for releasing or closing an injection port.
  • the additional nozzle needle also allows liquid fuel simultane- ously or offset in time to bring the gaseous fuel in the combustion chamber plin, wherein advantageously a pressure space is formed between the nozzle needle and the wall of the longitudinal bore, which is filled with the liquid medium, so that the liquid medium is ejected with the injection opening open by them.
  • the liquid medium is advantageously a liquid fuel, which has two functions in the injector. On the one hand, it serves as fuel, which can be injected via the injector into the combustion chamber, and on the other hand as a hydraulic working medium for controlling the nozzle needle and the inner needle.
  • the counterpressure space is hydraulically connected to the pressure chamber.
  • the back pressure chamber can be filled in simp cher manner and also the pressure chamber, which is formed between the inner needle and the longitudinal bore, so that the injector structurally simple can be implemented.
  • a high-pressure accumulator is provided, in which the liquid medium is held before, with which both the control chamber and the counter-pressure chamber is connected.
  • the same high pressure source for the liquid medium can be used both for the injection and for the control of the nozzle needle or the inner needle.
  • a reduction in pressure of the high-pressure accumulator for the liquid medium is relatively easy to do, since liquids are only slightly compressible, ie it must be controlled only a small amount in order to lower the pressure significantly. The energy losses due to such a pressure control are therefore low.
  • Figure 1 shows a first embodiment of the invention
  • Figure 2 shows a second embodiment also with schematic
  • the injector has an injector body 1, in which a nozzle needle 2 is arranged to be longitudinally displaceable, wherein the nozzle needle 2 has a longitudinal axis 9 and is substantially piston-shaped.
  • the nozzle needle 2 has at its end facing the combustion chamber a koni cal sealing surface 4, with which the nozzle needle 2 with a conical Nozzle seat 5 for opening and closing a flow cross-section together menwirkt that can be controlled between the sealing surface 4 and the nozzle seat 5.
  • the nozzle needle 2 is surrounded by a gas space 3, which can be filled via a running in the injector body 1 supply bore 6 with gaseous fuel.
  • a gas space 3 which can be filled via a running in the injector body 1 supply bore 6 with gaseous fuel.
  • an annular groove 7 is formed in the nozzle needle 2, in which the gaseous fuel flows from the gas space 3, when it flows between the sealing surface 4 and the nozzle seat 5.
  • more Eindüsö réelleen 8 are also formed, which are connected to the annular groove 7, so that the gaseous fuel from the annular groove 7 can be emptied through the injection opening 8.
  • the annular groove 7 ensures that the gaseous fuel is evenly distributed to the injection openings 8.
  • the nozzle needle 2 limits a control chamber 10 which is formed within the nozzle body 1 and radially outwardly of the nozzle body 1 and on the upper side in the drawing by a throttle plate 13 is limited.
  • the control chamber 10 can be filled via a throttle to 14 with a liquid medium under a working pressure. Via an outlet throttle 15, the liquid medium can be removed from the control chamber 10, so that an alternating hydraulic pressure in the control chamber 10 is adjustable.
  • the nozzle needle 2 has at its end facing away from the sealing surface 4 an enlarged diameter portion 102, on which the end face 32 is formed. Through the widened portion 102, an annular disk-shaped mating surface 33 is formed on the side of the widened portion 102 opposite the end face 32.
  • the expanded diameter portion 102 defines a back pressure chamber 12 which is formed as an annulus and the nozzle needle 2 surrounds.
  • the back pressure chamber 12 can also be filled with the liquid Medi, so that by the pressure in the back pressure chamber 12 a hyd raulische force is exerted on the nozzle needle 2, the hydraulic force of the control chamber 10 directed against the nozzle needle 2 is.
  • a liquid tank 23 is present.
  • the liquid medium is fed via a liquid line 26 to a pump 24, which compresses the liquid medium and transfers it via a second liquid.
  • slide 26 'in a high-pressure accumulator 25 initiates, where the compressed liquid medium is kept.
  • From the high-pressure accumulator 25 performs a pressure line 27, which branches in a first pressure line 27 'and a second pressure line 27 "ver, wherein the first pressure line 27' opens into the inlet bore 28 and thus the supply of the back pressure chamber 12, while the second pressure line 27 "opens into the inlet throttle 14 and thus filled the control chamber 10 with the liquid medium.
  • the outlet throttle 15 is connected via a control valve 29 with a return line 30 which leads back into the liquid tank 23.
  • the control valve 29 is formed as an example, electromagnetically actuated 2/2-way valve, so that the connection of the control chamber 10 via the outlet throttle 15 with the tank 23 can be opened electrically controlled or ge closed.
  • the supply of the injector with the gaseous medium comprises a gas tank 17, from which via a first gas line 19 a gaseous fuel ei nem compressor 18 is supplied, which compresses the gaseous fuel to the not agile working pressure and a second gas line 19 'a gas pressure accumulator 20th feeds, where the compressed gaseous medium or the gaseous fuel is kept.
  • the gas pressure accumulator 20 is connected via a high-pressure gas line 21 to the supply bore 6, so that thus the gas space 3 is filled with the compressed gaseous fuel.
  • the operation of the injector is as follows: If gas under the full Eindüs pressure, as it is held in the gas pressure accumulator 20, a gedüst in the combustion chamber, so a high pressure of the liquid medium is required, with both the control chamber 10 and the back pressure chamber 12 are filled when the control valve 29 is closed. If an injection to be done, the control valve 29 is opened and the hydraulic pressure in the control chamber 10 decreases, as over the outlet throttle 15 more liquid medium from the control chamber 10 flows as flows in the same period on the inlet throttle 14. As a result of the still high hydraulic pressure in the counterpressure space 12, a high hydraulic opening force is exerted on the nozzle needle 2, so that it quickly moves away from the nozzle seat 5 and opens the flow cross section between the sealing surface 4 and the nozzle seat 5.
  • the pressure in the hydraulic system is lowered, ie. in the high-pressure accumulator 25 is now at a lower hydraulic pressure.
  • This can be done for example by throttling the pump 24 or by ab interviewedung a portion of the liquid medium, the compressed in the high-pressure accumulator 25 is applied. This reduces the hydraulic closing force, which is exerted by the pressure in the control chamber 10 on the nozzle needle 2, but the nozzle needle 2 remains closed, as well as the hydraulic back pressure in the back pressure chamber 12 decreases accordingly.
  • the control valve 29 is opened, then decreases in turn as the hydraulic pressure in the control chamber 10, the hydraulic opening force in the back pressure chamber 12 but is now lower, so that the nozzle needle 2 is moved only comparatively slowly in the opening direction.
  • the flow cross-section between the sealing surface 4 and the nozzle seat 5 remains small and thus throttles the gas flow, the injection openings 8 in the annular groove 7 and the A flows.
  • the control valve 29 must be ge closed before the nozzle needle 2 moves out of the seat throttle range forth, ie the gas nozzle. from the stroke range in which a throttle gap is formed between the sealing surface 4 and the nozzle seat 5.
  • the control valve can be repeatedly opened and closed during an injection, so that the injection via the injection openings 8 always cross-section with throttled flow occurs and thus with a lower effective gas pressure at the injection openings. 8
  • the injector according to the invention thus enables injection with various NEN effective gas pressures.
  • Each desired effective gas pressure is assigned a corresponding pressure of the liquid medium or a corresponding pressure range in order to achieve this desired gas pressure.
  • chen by the nozzle needle is moved only so far that the required throttling of the gaseous fuel takes place. This correlation can be determined by experiments or simulation and deposited to control the injector for example in a corresponding control unit.
  • FIG. 2 shows a second embodiment of the injector according to the invention is shown, wherein the same components with respect to the figure 1 are provided with the same reference numerals. A renewed explanation of the same compo nents is therefore omitted.
  • This injector has over the Ausry tion of Figure 1 a modified nozzle needle, wherein the Düsenna del 2 is designed as a hollow needle with a longitudinal bore 35.
  • a piston-shaped inner needle 38 is arranged longitudinally displaceable, wherein between the nozzle needle 38 and the wall of the longitudinal bore 35, a pressure chamber 36 is formed, which is filled with the liquid medium.
  • a connecting bore 50 is formed in the nozzle needle 2, which connects the Ge gentikraum 12 with the pressure chamber 36.
  • the nozzle needle 38 has at its combustion chamber end, an inner sealing surface 41, with the inner needle 38 with an inner nozzle seat 40 for opening and closing a Strö tion cross-section cooperates, through which the liquid fuel to several ren, formed in the nozzle needle 2 injection openings 42nd can flow.
  • the inner needle 38 has on its side facing away from the inner sealing surface 41 an end face 44, with which the inner needle 38 defines an inner control chamber 43 which is filled with the liquid medium from the high-pressure accumulator 25 via egg ne inlet throttle 45. Via an outlet throttle 46, the inner STEU erraum 43 with the return line 30 is connected, said connection via a second control valve 48 leads, which in turn is designed as a 2/2-way valve and, for example, an electromagnetically operated valve. In the same way as the control chamber 10 so can the hydraulic pressure in the inner control chamber 43 by opening and closing the second control valve 48 SET len and thus control the longitudinal movement of the inner needle 38.
  • the opening speed of Düsenna del 2 can be adjusted via the counterplay between the pressure in the control room 10 and in the back pressure chamber 12 and thus a corresponding seat throttling between the sealing surface 4 and the nozzle seat 5, which thus reduces the pressure of the gaseous fuel at the injection openings 8.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un injecteur servant à doser un carburant gazeux, comportant un corps d'injecteur (1) dans lequel est agencée une aiguille d'injecteur (2) en forme de piston déplaçable longitudinalement et coopérant par une surface d'étanchéité (4) avec un siège d'injecteur (5) réalisé dans le corps d'injecteur (1), pour ouvrir et fermer une section transversale d'écoulement (11) par laquelle le carburant gazeux peut entrer par une ouverture d'injection (8). Un espace de commande (10) est délimité par la surface frontale (32) de l'aiguille d'injecteur (2) opposée à la surface d'étanchéité et peut être rempli d'un fluide liquide, une pression variable du liquide pouvant être ajustée dans l'espace de commande (10), et la pression dans l'espace de commande (10) exerçant sur l'aiguille d'injecteur (2) une force de fermeture en direction du siège d'étanchéité (5). Dans le corps d'injecteur (1) est ménagé un espace de contre-pression (12) qui peut être rempli par le fluide liquide et qui sollicite une contre-surface (33) de l'aiguille d'injecteur (2) de telle manière qu'est exercée une force hydraulique agissant dans la direction axiale de l'aiguille d'injecteur (2) et orientée à l'encontre de la force hydraulique dans l'espace de commande (10).
PCT/EP2019/050577 2018-01-15 2019-01-10 Injecteur servant à doser un carburant gazeux, système d'injection de gaz muni dudit injecteur et procédé permettant de faire fonctionner ledit injecteur Ceased WO2019138009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018200565.6A DE102018200565A1 (de) 2018-01-15 2018-01-15 Injektor zur Dosierung von gasförmigem Kraftstoff, Gaseinblassystem mit einem solchen Injektor und Verfahren zum Betreiben dieses Injektors
DE102018200565.6 2018-01-15

Publications (1)

Publication Number Publication Date
WO2019138009A1 true WO2019138009A1 (fr) 2019-07-18

Family

ID=65019506

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/050577 Ceased WO2019138009A1 (fr) 2018-01-15 2019-01-10 Injecteur servant à doser un carburant gazeux, système d'injection de gaz muni dudit injecteur et procédé permettant de faire fonctionner ledit injecteur

Country Status (2)

Country Link
DE (1) DE102018200565A1 (fr)
WO (1) WO2019138009A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022200564A1 (de) * 2022-01-19 2023-07-20 Robert Bosch Gesellschaft mit beschränkter Haftung Gasinjektor mit unterdruckgesteuertem zweitem Dichtsitz
DE102023132786A1 (de) 2023-11-24 2025-05-28 Woodward L`Orange GMBH Kraftstoffinjektor und Brennkraftmaschine mit Kraftstoffinjektor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016145518A1 (fr) * 2015-03-13 2016-09-22 Westport Power Inc. Injecteur de carburant gazeux à commande hydraulique
DE102015209134A1 (de) 2015-05-19 2016-11-24 Robert Bosch Gmbh Zweistoffinjektor
DE102016007773B3 (de) * 2016-06-24 2017-12-14 L'orange Gmbh Brenngasinjektor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016145518A1 (fr) * 2015-03-13 2016-09-22 Westport Power Inc. Injecteur de carburant gazeux à commande hydraulique
DE102015209134A1 (de) 2015-05-19 2016-11-24 Robert Bosch Gmbh Zweistoffinjektor
DE102016007773B3 (de) * 2016-06-24 2017-12-14 L'orange Gmbh Brenngasinjektor

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