WO2018141589A1 - Procédé pour faire fonctionner un moteur à combustion interne monovalent à mode de combustion par diffusion sur le principe du diesel et dispositif pour la mise en oeuvre dudit procédé - Google Patents

Procédé pour faire fonctionner un moteur à combustion interne monovalent à mode de combustion par diffusion sur le principe du diesel et dispositif pour la mise en oeuvre dudit procédé Download PDF

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Publication number
WO2018141589A1
WO2018141589A1 PCT/EP2018/051616 EP2018051616W WO2018141589A1 WO 2018141589 A1 WO2018141589 A1 WO 2018141589A1 EP 2018051616 W EP2018051616 W EP 2018051616W WO 2018141589 A1 WO2018141589 A1 WO 2018141589A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection
injected
fuel quantity
fuel
combustion chamber
Prior art date
Application number
PCT/EP2018/051616
Other languages
German (de)
English (en)
Inventor
Juergen Foerster
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 WO2018141589A1 publication Critical patent/WO2018141589A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0654—Thermal treatments, e.g. with heating elements or local cooling
    • F02B23/0657—Thermal treatments, e.g. with heating elements or local cooling the spray interacting with one or more glow plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
    • 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
    • F02D19/02—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 gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F02D19/024—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
    • 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
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F02D41/403—Multiple injections with pilot injections
    • 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
    • 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
    • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B7/00—Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel
    • F02B7/06—Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel the fuel in the charge being gaseous
    • F02B7/08—Methods of operating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B9/00—Engines characterised by other types of ignition
    • F02B9/02—Engines characterised by other types of ignition with compression ignition
    • 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
    • Y02T10/12—Improving ICE efficiencies
    • 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
    • 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
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to a method for operating a monovalent internal combustion engine with diffusion combustion according to the diesel principle with the features of the preamble of claim 1. Furthermore, the invention relates to an apparatus for carrying out the method.
  • the gas pressure must be well above the combustion pressure, so that in particular gas valves for high pressure direct injection C.high pressure - direct injection "or HP-DI injectors) find use .Such gas engines have compared to other gas engines high efficiency, short reaction tion times in terms of dynamics and increased robustness against small methane numbers (lower tendency to knock with variance in gas quality) on.
  • the present invention is therefore based on the object of specifying a method for operating a monovalent internal combustion engine, in particular gas engine, with diffusion combustion according to the diesel principle, in which a non-self-igniting or difficult to ignite fuel injected by means of an injection or blowing directly into a combustion chamber or . is blown, is lit as evenly as possible. At the same time, the constructive effort to carry out the process should be kept as low as possible.
  • the diffusion combustion of an injected or injected main fuel quantity is introduced by a previously introduced into the combustion chamber and ignited pilot fuel quantity of the same fuel. This means that only one fuel has to be kept, so that the system requirements decrease. at the same time allows a monovalent operation of the internal combustion engine, which can be optimized in terms of the combustion of the fuel, without taking into account another fuel.
  • the pollutant emissions are reduced.
  • the ignition of the amount of fuel introduced into the combustion chamber before the main fuel quantity can be effected by using a simple glow device, such as a glow plug, so that the system requirements remain low.
  • an injector in particular an HP-DI injector, is preferably used as the injection or injection device.
  • HP-DI injector in particular an HP-DI injector.
  • a fuel-air mixture cloud is generated with injection or injection of the pilot fuel quantity into the combustion chamber, the annular nozzle of the injection or injection device surrounds. That is, the pilot fuel quantity is to be introduced so as to mix with air close to the injector to create a fuel-air mixture cloud surrounding the nozzle.
  • the fuel-air mixture cloud surrounds the nozzle in the region of the injection or injection openings, so that the subsequently injected or injected main fuel quantity safely hits the fuel-air mixture cloud after it has been ignited.
  • the injection or injection openings may be those which serve only for injecting the pilot fuel quantity or the main fuel quantity or for injecting the pilot fuel quantity in a time-delayed manner or the main fuel. Allow fuel quantity.
  • in particular spatially separated injection or injection openings are proposed.
  • the main fuel quantity is injected or blown into the combustion chamber through the burning fuel-air mixture cloud or an exhaust gas cloud remaining due to the combustion.
  • the burning or burned mixture cloud should therefore be placed so that it is hit by the fuel jets of the main fuel quantity. In this way, a safe ignition of the main amount of fuel over the inflamed pilot fuel quantity or the hot exhaust gas is ensured, which remains when the pilot fuel quantity burns.
  • the previously introduced into the combustion chamber pilot fuel quantity by means of an annealing or ignition device preferably by means of a glow plug, inflamed.
  • Glow plugs are easy to install and easy to replace when needed.
  • the selective ignition of the pilot fuel quantity via a laterally arranged glow plug in the present case is not a disadvantage, if it is ensured that up to the injection or injection of the main fuel quantity a completely ignited fuel-air mixture cloud or hot exhaust gas cloud around the injection - or injections can lay.
  • a combination of the injection or blowing device with an annealing or ignition device is not required in this case, so that it can be kept relatively simple.
  • a control device is used for demand-controlled or regulating the glow or ignition device. In this way, the process can be operated particularly energy efficient.
  • pilot fuel quantities be injected or injected before injecting or blowing in the main fuel quantity.
  • the other introduced into the combustion chamber pilot fuel quantities are used to stabilize the annular fuel-air mixture cloud and / or the formation of the combustion profile of the pilot fuel quantity and / or the main fuel quantity.
  • the main fuel quantity is preferably injected or blown into the combustion chamber in a radial manner. That is, by means of the injection device, fuel jets are formed, which are ignited by means of the pilot fuel quantity, when they hit the amount of fuel formed from the pilot fuel and air or burned fuel-air mixture cloud. Further preferably, the injection or injection of the main amount of fuel is carried out under high pressure to ensure a uniform distribution of the fuel in the combustion chamber.
  • a gaseous fuel in particular natural gas
  • a gaseous fuel is used as non-self-igniting or hardly ignitable fuel.
  • gaseous fuels such as natural gas
  • the ⁇ output can be reduced.
  • the burden of particles or particulate matter decreases.
  • the apparatus comprises an internal combustion engine with a cylinder head, in which a combustion chamber is formed, and wherein in the cylinder head an injection or blowing device is used, by means of which the non-igniting or difficult to ignite Fuel can be injected directly into the combustion chamber or is inflatable, and wherein the injection or injection device has a nozzle with a plurality of annular injection or injection openings, over which a pilot fuel quantity and a main amount of fuel offset in time are injectable or inflatable.
  • an annealing or ignition device preferably a glow plug
  • the glow plug is an independent component that is easy to assemble and easy to replace when needed. Further, no annealing or igniting device needs to be integrated into the injection or blowing device, so that the structure of the device is simplified.
  • 2, 4 and 6 are each a schematic view of the devices shown in the longitudinal sections.
  • the device schematically illustrated in the figures for carrying out the method according to the invention comprises a cylinder head 8, in which a combustion chamber 2 is formed.
  • a combustion chamber 2 bounding wall 10 of the cylinder head eighth is an injection or injection device 1 used in such a way that a nozzle 4 of the injection or injection device 1 comes to rest on the combustion chamber side.
  • the injection or injection device 1 is used for injecting or blowing a not self-igniting or difficult to ignite fuel, such as natural gas, in the combustion chamber 2 of the device, wherein the fuel is injected directly into the combustion chamber 2 or injected.
  • a plurality of injection or injection openings 5 are formed, which are annular and at the same angular distance from each other, in this case 90 °, are arranged.
  • an annealing or ignition device 7 is provided in the form of a glow plug, which is arranged laterally with respect to the injection or injection device 1 and serves to ignite the not self-igniting or difficult to ignite fuel.
  • the injection or injection device 1 By means of the injection or injection device 1 is a pilot fuel quantity injection or inflatable, which mixes with the air present in the combustion chamber 2 and a laying around the nozzle 4 legend fuel-air mixture cloud 3 forms (see Figures 1 and 2).
  • the tip 11 of the glow plug facing the injection or injection device is already heated, but there is still no ignition of the fuel-air mixture cloud 3.
  • the method is designed by the timing so that the pilot fuel quantity injected relatively early or injected so that the combustion of the fuel-air mixture cloud 3 at the time of injection or injection of the main fuel quantity provides sufficient heat of combustion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Dispersion Chemistry (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un moteur à combustion interne monovalent à mode de combustion par diffusion sur le principe du diesel, procédé selon lequel un carburant à allumage non spontané ou difficilement inflammable est injecté directement dans une chambre de combustion (2) au moyen d'un dispositif d'injection (1). Selon l'invention, la combustion par diffusion d'une quantité de carburant principal injectée est déclenchée par une quantité de carburant pilote du même carburant préalablement introduite dans la chambre de combustion (2) et enflammée. L'invention concerne en outre un dispositif permettant de mettre en œuvre ledit procédé.
PCT/EP2018/051616 2017-02-01 2018-01-24 Procédé pour faire fonctionner un moteur à combustion interne monovalent à mode de combustion par diffusion sur le principe du diesel et dispositif pour la mise en oeuvre dudit procédé WO2018141589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017201589.6 2017-02-01
DE102017201589.6A DE102017201589A1 (de) 2017-02-01 2017-02-01 Verfahren zum Betreiben eines monovalenten Verbrennungsmotors mit Diffusionsverbrennung nach dem Dieselprinzip sowie Vorrichtung zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
WO2018141589A1 true WO2018141589A1 (fr) 2018-08-09

Family

ID=61054387

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/051616 WO2018141589A1 (fr) 2017-02-01 2018-01-24 Procédé pour faire fonctionner un moteur à combustion interne monovalent à mode de combustion par diffusion sur le principe du diesel et dispositif pour la mise en oeuvre dudit procédé

Country Status (2)

Country Link
DE (1) DE102017201589A1 (fr)
WO (1) WO2018141589A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020207712A1 (fr) * 2019-04-11 2020-10-15 Man Truck & Bus Se Procédé pour faire fonctionner un moteur à combustion interne
WO2021048024A1 (fr) * 2019-09-12 2021-03-18 Man Truck & Bus Se Procédé de fonctionnement d'un moteur à combustion interne

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050257769A1 (en) * 2002-10-02 2005-11-24 Guowei Li Control method and apparatus for gaseous fuelled internal combustion engine
WO2013116941A1 (fr) * 2012-02-07 2013-08-15 Westport Power Inc. Dispositif et procédé d'allumage d'un carburant gazeux dans un moteur à combustion à injection directe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050257769A1 (en) * 2002-10-02 2005-11-24 Guowei Li Control method and apparatus for gaseous fuelled internal combustion engine
WO2013116941A1 (fr) * 2012-02-07 2013-08-15 Westport Power Inc. Dispositif et procédé d'allumage d'un carburant gazeux dans un moteur à combustion à injection directe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020207712A1 (fr) * 2019-04-11 2020-10-15 Man Truck & Bus Se Procédé pour faire fonctionner un moteur à combustion interne
US11885256B2 (en) 2019-04-11 2024-01-30 Man Truck & Bus Se Method for operating an internal combustion engine
WO2021048024A1 (fr) * 2019-09-12 2021-03-18 Man Truck & Bus Se Procédé de fonctionnement d'un moteur à combustion interne
US11852096B2 (en) 2019-09-12 2023-12-26 Man Truck & Bus Se Method for operating an internal combustion engine

Also Published As

Publication number Publication date
DE102017201589A1 (de) 2018-08-02

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