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JP7311264B2 - Method for priming and preferably thereafter starting an internal combustion engine configured as a gas engine or a dual fuel engine - Google Patents
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JP7311264B2 - Method for priming and preferably thereafter starting an internal combustion engine configured as a gas engine or a dual fuel engine - Google Patents

Method for priming and preferably thereafter starting an internal combustion engine configured as a gas engine or a dual fuel engine Download PDF

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JP7311264B2
JP7311264B2 JP2018237236A JP2018237236A JP7311264B2 JP 7311264 B2 JP7311264 B2 JP 7311264B2 JP 2018237236 A JP2018237236 A JP 2018237236A JP 2018237236 A JP2018237236 A JP 2018237236A JP 7311264 B2 JP7311264 B2 JP 7311264B2
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fuel supply
fuel
supply system
specific
cylinder
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JP2019113066A (en
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ザシャ・シュトール
シュテファン・テルベック
ハンス－フィリップ・ヴァルター
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Everllence SE
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MAN Energy Solutions SE
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    • 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
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • 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
    • F02D19/025—Failure diagnosis or prevention; Safety measures; Testing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/001—Arrangements thereof
    • 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
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • F02D19/0621—Purging of the fuel system
    • 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
    • F02D19/0623—Failure diagnosis or prevention; Safety measures; Testing
    • 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
    • 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
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for 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
    • 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
    • F02M21/0293—Safety devices; Fail-safe measures
    • 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
    • F02M63/0205—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/02—Fuel evaporation in fuel rails, e.g. in common rails
    • 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

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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)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Description

本発明は、ガスエンジン又は二元燃料エンジンとして構成された内燃機関を始動準備する、そして、好ましくはその後始動するための方法に関する。 The present invention relates to a method for priming and preferably thereafter starting an internal combustion engine configured as a gas engine or a dual fuel engine.

ガスエンジン又は二元燃料エンジンとして構成された内燃機関の基本的な構造及び基本的な機能については、当業者によく知られている。ガスエンジンは、典型的には、複数のシリンダを有しており、シリンダ内では専ら、メタン等のガス燃料が燃焼する。二元燃料エンジンは、典型的には、同様に複数のシリンダを有しており、シリンダ内では、第１の動作モードにおいて、ディーゼル等の液体燃料が燃焼し、第２の動作モードにおいて、メタン等のガス燃料が燃焼し得る。ガスエンジンのシリンダ又は二元燃料エンジンのシリンダは、典型的には、複数のシリンダから成る少なくとも１つの群の内に配置されている。 The basic construction and basic functioning of internal combustion engines configured as gas engines or dual fuel engines are well known to those skilled in the art. A gas engine typically has multiple cylinders in which gas fuel, such as methane, is exclusively burned. Dual fuel engines typically also have multiple cylinders in which a liquid fuel such as diesel is combusted in a first mode of operation and methane in a second mode of operation. gaseous fuels such as . Gas engine cylinders or dual fuel engine cylinders are typically arranged in at least one group of cylinders.

シリンダの各群には、ガス燃料が、シリンダ群固有の燃料供給導管を通じて供給可能であり、シリンダ群固有の燃料供給導管からは、シリンダ固有の燃料供給導管が分岐しており、シリンダ固有の燃料供給導管は、１つの群の各シリンダを、シリンダ群固有の燃料供給導管に結び付ける。１以上のシリンダ群固有の燃料供給導管は、ガス燃料のための燃料供給システムの構成要素であり、当該燃料供給システムは、シリンダ群ごとに、さらに、シリンダ群固有の燃料供給弁、シリンダ固有の燃料供給弁、及び、通気弁を有している。 Each group of cylinders can be supplied with gaseous fuel through a cylinder group-specific fuel supply conduit branching off from the cylinder group-specific fuel supply conduit for a cylinder-specific fuel supply conduit. A supply conduit connects each cylinder of a group to a cylinder group specific fuel supply conduit. One or more cylinder group-specific fuel supply conduits are part of a fuel supply system for gas fuel, which for each cylinder group further includes a cylinder group-specific fuel supply valve, a cylinder-specific fuel supply valve, a cylinder-specific It has a fuel supply valve and a vent valve.

ガスエンジンでは、ガス燃料のための燃料供給システム、すなわちシリンダ群固有の燃料供給導管は、通常運転においては一般的に、ガスエンジンが停止している場合でも、ガス燃料で満たされている。しかしながら、メンテナンス作業を実施するために、燃料供給システム、すなわちシリンダ群固有の燃料供給導管は、燃料供給システムの通気弁が開放されている場合に、浄化システムによって換気されるので、ガスエンジンをその後始動させるためには、シリンダ群固有の燃料供給導管それぞれに、ガス燃料を充填しなければならない。二元燃料エンジンでは、ガス燃料のための燃料供給システム、すなわちシリンダ群固有の燃料供給導管は、シリンダ内で実際にガス燃料が燃焼する場合にのみ、ガス燃料で満たされている。これに対して、二元燃料エンジンのシリンダ内で、ディーゼル等の液体燃料が燃焼する場合、ガス燃料のための燃料供給システム、すなわちシリンダ群固有の燃料供給導管は、一般的には換気され、特に空気又は窒素で満たされている。二元燃料エンジンにおいて液体燃料が燃焼する二元燃料エンジンの動作モードから、二元燃料エンジンにおいてガス燃料が燃焼する動作モードに切り替えるためには、シリンダ群固有の燃料供給導管それぞれに、決められた方法で、ガス燃料を充填しなければならない。 In gas engines, the fuel supply system for gas fuel, ie the cylinder bank-specific fuel supply conduits, is generally filled with gas fuel in normal operation, even when the gas engine is off. However, in order to carry out maintenance work, the fuel supply system, i.e. the cylinder group-specific fuel supply conduit, is vented by the purification system when the vent valve of the fuel supply system is opened, so that the gas engine is subsequently For start-up, each cylinder group-specific fuel supply conduit must be filled with gaseous fuel. In a dual-fuel engine, the fuel supply system for gas fuel, ie the cylinder group-specific fuel supply conduit, is filled with gas fuel only when it actually burns in the cylinders. In contrast, when a liquid fuel such as diesel is burned in the cylinders of a dual-fuel engine, the fuel supply system for the gas fuel, i.e. the cylinder bank-specific fuel supply conduit, is generally ventilated and Especially filled with air or nitrogen. In order to switch from a dual-fuel engine operating mode in which liquid fuel is burned in a dual-fuel engine to an operating mode in which gas fuel is burned in a dual-fuel engine, each cylinder group specific fuel supply conduit is provided with a determined method must be filled with gas fuel.

これまで、ガスエンジンを、ガス燃料が放出された燃料供給導管においてメンテナンス作業を実施した後で正常に始動すること、及び、二元燃料エンジンを、液体燃料動作モードからガス燃料動作モードに切り替えた際に正常に始動することは困難であった。従って、ガスエンジン又は二元燃料エンジンとして構成された内燃機関の始動準備のための方法であって、ガス燃料のための燃料供給システム、特にシリンダ群固有の燃料供給導管それぞれから、ガス燃料が放出された場合、又は、その換気が行われた場合に、ガスエンジン又は二元燃料エンジンを、ガス燃料で、安全かつ確実に始動させることができるような方法への必要性が存在している。 Heretofore, gas engines have been successfully started after performing maintenance work on a fuel supply conduit in which gas fuel has been released, and dual fuel engines have been switched from liquid fuel operating mode to gas fuel operating mode. It was difficult to start normally. Thus, a method for the start-up preparation of a gas engine or an internal combustion engine configured as a dual-fuel engine, wherein gas fuel is released from a fuel supply system for gas fuel, in particular from each cylinder group-specific fuel supply conduit. A need exists for a method by which a gas engine or dual fuel engine can be safely and reliably started on gas fuel when it is ventilated or ventilated.

この必要性に基づいて、本発明の課題は、ガスエンジン又は二元燃料エンジンとして構成された内燃機関の新しい始動準備方法を創出することにある。 Based on this need, the task of the present invention is to create a new method for starting up an internal combustion engine configured as a gas engine or a dual-fuel engine.

本課題は、請求項１に記載の方法によって解決される。 This problem is solved by a method according to claim 1 .

ステップａ）では、まず、シリンダ群固有の燃料供給弁が閉じられ、シリンダ固有の燃料供給弁が閉じられ、通気弁が閉じられた場合に、前もってガス燃料が放出されていた燃料供給システムに、浄化媒体が所定の方法で充填され、燃料供給システム内に広まっている圧力が、所定の期間にわたって、所定の圧力範囲内にあるかが監視される。次に、ステップａ）において燃料供給システム内に広まっている圧力が所定の期間にわたって所定の圧力範囲内にあることが確認される場合、後続のステップｂ）において、燃料供給システムに、ガス燃料が充填される。ステップａ）において燃料供給システムに広まっている圧力が所定の期間にわたっては所定の圧力範囲内にないことが確認される場合、好ましくは、始動準備が中止される。 In step a), firstly, the cylinder group-specific fuel supply valve is closed, the cylinder-specific fuel supply valve is closed, the fuel supply system, which was previously vented with gaseous fuel when the vent valve was closed, Purification medium is charged in a predetermined manner and the pressure prevailing in the fuel supply system is monitored over a predetermined period of time within a predetermined pressure range. Then, if in step a) it is determined that the pressure prevailing in the fuel supply system is within a predetermined pressure range for a predetermined period of time, then in a subsequent step b) the fuel supply system is supplied with gas fuel. be filled. If it is determined in step a) that the pressure prevailing in the fuel supply system is not within a predetermined pressure range for a predetermined period of time, the start-up preparation is preferably aborted.

本発明では、内燃機関の実際の始動プロセスの前に、始動準備において、ガス燃料のための燃料供給システムがリークを有しているか、又は、リークを有していないかが検査される。このために、ガス燃料が燃料供給システムに導入されることはなく、専ら浄化媒体、特に空気又は窒素等の不活性ガスが導入される。このために、好ましくは、シリンダ群固有の燃料供給導管には、浄化媒体を用いて、所定の方法で圧力が加えられ、当該圧力が所定の圧力範囲内にあるか否かが検査される。 According to the invention, before the actual starting process of the internal combustion engine, in preparation for starting, the fuel supply system for the gaseous fuel is checked for leaks or not. For this, no gaseous fuel is introduced into the fuel supply system, but exclusively a cleaning medium, in particular air or an inert gas such as nitrogen. For this purpose, the cylinder group-specific fuel supply line is preferably pressurized with a cleaning medium in a predetermined manner and checked whether the pressure lies within a predetermined pressure range.

圧力が、所定の期間にわたって、所定の圧力範囲内にある場合は、リークが存在しないと推測されるので、その後で、内燃機関は、安全かつ確実に始動可能である。つまり、内燃機関のシリンダ内、又は、内燃機関の排気管内にリークが存在する場合に生じるガス燃料が、決められていない方法で発火する、又は、突然に燃え上がるという危険は存在しない。 If the pressure remains within the predetermined pressure range for the predetermined period of time, then it is assumed that no leak exists and the internal combustion engine can then be started safely and reliably. Thus, there is no danger that the gaseous fuel will ignite in an undefined way or flare up suddenly, which would occur if there were a leak in the cylinder of the internal combustion engine or in the exhaust pipe of the internal combustion engine.

上述の圧力検査において、燃料供給システム内の圧力、特にシリンダ群固有の燃料供給導管内に広まっている圧力が所定の期間にわたっては所定の圧力範囲内にないことが確認される場合、燃料供給システムのリークが推測され、次に、内燃機関の始動に際する危険を回避するために、好ましくは、始動準備が中止される。 If the pressure test described above confirms that the pressure in the fuel supply system, in particular the pressure prevailing in the fuel supply conduit specific to the cylinder group, is not within a predetermined pressure range for a predetermined period of time, the fuel supply system is presumed, then the start-up preparation is preferably canceled in order to avoid dangers when starting the internal combustion engine.

好ましくは、ステップａ）において、燃料供給システムのシリンダ群固有の燃料供給導管内に広まっている圧力が検出され、評価される。これによって、特に容易かつ確実なリーク検査が可能になる。 Preferably, in step a), the prevailing pressure in the cylinder group-specific fuel supply conduits of the fuel supply system is detected and evaluated. This allows a particularly easy and reliable leak test.

本発明の好ましいさらなる発展形態は、従属請求項及び以下の説明から明らかになる。本発明の実施例を、図面を用いて詳細に説明するが、それに限定されるものではない。 Preferred further developments of the invention emerge from the dependent claims and the following description. Exemplary embodiments of the invention will now be described in detail with reference to the drawings, without being restricted thereto.

内燃機関のブロック図である。1 is a block diagram of an internal combustion engine; FIG. 別の内燃機関のブロック図である。FIG. 4 is a block diagram of another internal combustion engine;

本発明は、ガスエンジンとして構成された内燃機関又は二元燃料エンジンとして構成された内燃機関を始動準備する、そして、好ましくは、その後にガス燃料を用いて内燃機関を始動するための方法に関する。 The present invention relates to a method for preparing to start an internal combustion engine configured as a gas engine or an internal combustion engine configured as a dual fuel engine, and preferably for subsequently starting the internal combustion engine using gas fuel.

以下に、本発明に係る方法を、図１及び図２を用いて説明する。図１及び図２において極めて概略的に示された内燃機関１０は、それぞれ、一列に配置されたシリンダ１２から成る群１１を有している。シリンダ１２の群１１には、ガス燃料が、ガス燃料のための燃料供給システム１３のシリンダ群固有の燃料供給導管１４を通じて供給可能であり、シリンダ群固有の燃料供給導管１４からは、シリンダ固有の燃料供給導管１５が分岐しており、シリンダ固有の燃料供給導管１５を通じて、ガス燃料が、シリンダ群固有の燃料供給導管１４から各シリンダ１２に供給され得る。図１によると、シリンダ群固有の燃料供給導管１４には、シリンダ群固有の燃料供給弁１６が配設されている。従って、シリンダ群固有の燃料供給弁１６が開放されている場合には、シリンダ群固有の燃料供給導管１４にガス燃料を充填することが可能である。 The method according to the invention will be explained below with reference to FIGS. 1 and 2. FIG. The internal combustion engines 10 shown very schematically in FIGS. 1 and 2 each have a group 11 of cylinders 12 arranged in a row. The group 11 of cylinders 12 can be supplied with gas fuel via a cylinder group-specific fuel supply conduit 14 of a fuel supply system 13 for gas fuel, from which cylinder-specific fuel supply conduits 14 can be supplied. Fuel supply conduits 15 branch off, via which cylinder-specific fuel supply conduits 15 gas fuel can be supplied to each cylinder 12 from cylinder group-specific fuel supply conduits 14 . According to FIG. 1, a cylinder group-specific fuel supply valve 16 is arranged in the cylinder group-specific fuel supply line 14 . It is therefore possible to fill the cylinder group-specific fuel supply conduit 14 with gaseous fuel when the cylinder group-specific fuel supply valve 16 is open.

シリンダ固有の燃料供給導管１５それぞれには、シリンダ固有の燃料供給弁１７が配設されており、代替的には、このシリンダ固有の燃料供給弁１７は、各シリンダ１２に配設されている。シリンダ固有の燃料供給弁１７が開放されているか、又は、閉鎖されているかに応じて、シリンダ群固有の燃料供給導管１４がガス燃料で満たされている場合、各シリンダ１２には、ガス燃料が、シリンダ群固有の燃料供給導管１４から供給され得る。 A cylinder-specific fuel supply valve 17 is arranged in each cylinder-specific fuel supply line 15 , alternatively this cylinder-specific fuel supply valve 17 is arranged in each cylinder 12 . Each cylinder 12 is supplied with gas fuel when the cylinder group-specific fuel supply conduit 14 is filled with gas fuel, depending on whether the cylinder-specific fuel supply valve 17 is open or closed. , can be supplied from a cylinder group-specific fuel supply conduit 14 .

図１及び図２はそれぞれ、燃料供給システム１３内、及び、シリンダ群固有の燃料供給導管１４内に、ガス燃料が存在しないという各内燃機関１０の状態を示しており、図１及び図２においてはむしろ、シリンダ群固有の燃料供給導管１４からは、通気弁１８を通じて、ガス燃料が放出されており、シリンダ群固有の燃料供給導管１４は、例えば周囲空気又は窒素Ｎ２のような不活性ガス等の浄化媒体で満たされている。 1 and 2 respectively show the state of each internal combustion engine 10 with no gaseous fuel present in the fuel supply system 13 and in the cylinder group specific fuel supply conduit 14; Rather, the cylinder group-specific fuel supply conduit 14 is vented with gaseous fuel through a vent valve 18, and the cylinder group-specific fuel supply conduit 14 is, for example, filled with ambient air or an inert gas such as nitrogen N2 . is filled with a purification medium such as

本発明は、内燃機関を始動準備する、そして、必要に応じてその後始動するための方法の詳細に関するものであり、これらの詳細によって、内燃機関は、ガス燃料を用いて安全かつ確実に始動可能であり、より正確には、内燃機関は、燃料供給システム１３が換気された状態から、つまり、前もってシリンダ群固有の燃料供給導管１４から、特に通気弁１８を通じて、ガス燃料が放出されている場合に、ガス燃料を用いて安全かつ確実に始動可能である。 The present invention relates to details of a method for priming and, if necessary, subsequently starting an internal combustion engine, by means of which the internal combustion engine can be started safely and reliably using gaseous fuel. , and more precisely, if the internal combustion engine has been vented with gaseous fuel from the fuel supply system 13 ventilated, i.e. previously from the cylinder group-specific fuel supply conduit 14 , in particular through the vent valve 18 . In addition, it can be started safely and reliably using gas fuel.

始動準備のための本発明では、第１のステップａ）において、まず、シリンダ群固有の燃料供給弁１６が閉じられ、シリンダ固有の燃料供給弁１７が閉じられ、通気弁１８が閉じられた場合に、前もってガス燃料が放出されていた燃料供給システム１３、つまり、前もって換気されたシリンダ群固有の燃料供給導管１４に、浄化媒体が所定の方法で充填されるので、シリンダ群固有の燃料供給導管１４内部において、所定の圧力が生じる。 According to the invention for start-up preparation, in a first step a), firstly the cylinder group-specific fuel supply valve 16 is closed, the cylinder-specific fuel supply valve 17 is closed and the vent valve 18 is closed. In addition, the fuel supply system 13, which was previously vented with gaseous fuel, i.e. the previously ventilated cylinder group-specific fuel supply conduit 14, is filled in a predetermined manner with a cleaning medium so that the cylinder group-specific fuel supply conduit Inside 14 a certain pressure is generated.

燃料供給システム１３内の圧力、すなわちシリンダ群固有の燃料供給導管１４内の圧力が監視される、つまり、燃料供給システム１３内、すなわちシリンダ群固有の燃料供給導管１４内に広まっている圧力が、所定の期間にわたり、所定の圧力範囲内にあるかどうかが監視される。当該圧力は、シリンダ群固有の燃料供給導管１４に作用する圧力センサ１９で検出される。 The pressure in the fuel supply system 13, i.e. the pressure in the cylinder group-specific fuel supply conduit 14 is monitored, i.e. the pressure prevailing in the fuel supply system 13, i.e. the cylinder group-specific fuel supply conduit 14 is It is monitored for a predetermined pressure range over a predetermined period of time. The pressure is detected by a pressure sensor 19 acting on the cylinder group-specific fuel supply line 14 .

浄化システム２０によって、シリンダ群固有の燃料供給導管１４に導入される浄化媒体は、ガス状の浄化媒体、特に空気又は窒素等の不活性ガスである。当該浄化媒体は、試験媒体とも称される。 The purifying medium introduced by the purifying system 20 into the cylinder group-specific fuel supply conduit 14 is a gaseous purifying medium, in particular air or an inert gas such as nitrogen. Said purification medium is also referred to as test medium.

第１のステップａ）において燃料供給システム１３内すなわちシリンダ群固有の燃料供給導管１４内に広まっている圧力が所定の期間にわたって所定の圧力領域内にあることが確認される場合、ガス燃料のための燃料供給システム１３にリークが存在しないことが推測され、次に第２のステップｂ）において、燃料供給システム１３に、従来の方法で燃料が充填され、第２のステップｂ）の後、第３のステップｃ）において、内燃機関１０がガス燃料を用いて始動される。 For gas fuel, if it is determined in the first step a) that the pressure prevailing in the fuel supply system 13, i.e. in the cylinder group-specific fuel supply conduit 14, is within a predetermined pressure range for a predetermined period of time. fuel supply system 13, then in a second step b) the fuel supply system 13 is filled with fuel in a conventional manner and after the second step b) a second In step c) of 3, the internal combustion engine 10 is started with gaseous fuel.

これに対して、第１のステップａ）において燃料供給システム１３内すなわちシリンダ群固有の燃料供給導管１４内に広まっている圧力が所定の期間にわたっては所定の圧力領域内にないことが確認される場合、始動準備は中止される。なぜなら、燃料供給システム１３内にリークが存在することが推測され、内燃機関１０を安全には始動できないからである。付加的に、好ましくは警報が発せられる。 On the other hand, in a first step a) it is ensured that the pressure prevailing in the fuel supply system 13, i.e. in the cylinder group-specific fuel supply line 14, is not within a given pressure range for a given period of time. start preparation is aborted. This is because it is presumed that there is a leak in the fuel supply system 13, and the internal combustion engine 10 cannot be started safely. Additionally, an alarm is preferably generated.

図１に示された内燃機関１０の実施例では、前もってガス燃料からの換気が行われた、又は、ガス燃料が放出された燃料供給システム１３への浄化媒体の所定の充填、すなわちシリンダ群固有の燃料供給導管１４への浄化媒体の充填は、浄化システム２０の遮断装置２１の作動を通じて自動的に行われる。遮断装置２１が閉じられている場合、浄化システム２０は、シリンダ群固有の燃料供給導管１４から分離されている。この場合、シリンダ群固有の燃料供給導管１４には、浄化媒体は到達し得ない。これに対して、浄化システム２０の遮断装置２１が開かれている場合、浄化媒体は、シリンダ群固有の燃料供給導管１４に到達し、弁１６、１８が閉鎖されている場合には、シリンダ群固有の燃料供給導管１４内では、所定の圧力が生じる。 In the embodiment of the internal combustion engine 10 shown in FIG. 1, a predetermined charge of the cleaning medium, i.e. cylinder group-specific The filling of the fuel supply conduit 14 with the purification medium takes place automatically through the actuation of the shut-off device 21 of the purification system 20 . When the shut-off device 21 is closed, the purification system 20 is separated from the cylinder group-specific fuel supply line 14 . In this case, no cleaning medium can reach the cylinder group-specific fuel supply line 14 . On the other hand, if the shut-off device 21 of the purification system 20 is open, the purification medium reaches the cylinder group-specific fuel supply line 14, and if the valves 16, 18 are closed, the cylinder group A certain pressure is generated in the own fuel supply line 14 .

図２は、内燃機関の一実施形態を示しており、当該実施形態においては、前もってガス燃料からの換気が行われた、又は、ガス燃料が放出された燃料供給システム１３への浄化媒体の所定の充填、すなわち前もって換気された、又は、放出が行われたシリンダ群固有の燃料供給導管１４への浄化媒体の充填は、手動で、すなわち、浄化システム２０を燃料供給システム１３に、すなわちシリンダ群固有の燃料供給導管１４の図示されていない接続用ソケットに手動で接続することによって行われ、この接続用ソケットは、好ましくは、作動不可能な逆止弁を受容している。 FIG. 2 shows an embodiment of an internal combustion engine in which a predetermined amount of purification medium to the fuel supply system 13 which has previously been vented from the gaseous fuel or has been released from the gaseous fuel. , i.e. filling the previously ventilated or vented cylinder group-specific fuel supply conduit 14 with a purification medium manually, i.e. connecting the purification system 20 to the fuel supply system 13, i.e. the cylinder group This is done by manual connection to a connecting socket (not shown) of the own fuel supply conduit 14, which preferably receives a non-operable non-return valve.

従って、本発明では、ガスエンジン又は二元燃料エンジンにおいて、所定の始動準備が、ガスエンジン又は二元燃料エンジンの始動の前に行われ得る。リーク検査には、専ら浄化媒体、特に空気又は窒素等の不活性ガスが用いられ、ガス燃料は用いられない。それによって、リーク検査にガス燃料を用いる方法に比べて、安全性が向上し得る。 Thus, according to the invention, in a gas engine or a dual fuel engine, a predetermined start-up preparation can be carried out prior to starting the gas engine or the dual fuel engine. Leak tests exclusively use cleaning media, in particular air or inert gases such as nitrogen, and not gaseous fuels. Thereby, safety can be improved compared to the method of using gas fuel for leak inspection.

１０ 内燃機関
１１ 群
１２ シリンダ
１３ 燃料供給システム
１４ シリンダ群固有の燃料供給導管
１５ シリンダ固有の燃料供給導管
１６ シリンダ群固有の燃料供給弁
１７ シリンダ固有の燃料供給弁
１８ 通気弁
１９ 圧力センサ
２０ 浄化システム
２１ 遮断要素 10 internal combustion engine 11 group 12 cylinder 13 fuel supply system 14 cylinder group specific fuel supply conduit 15 cylinder specific fuel supply conduit 16 cylinder group specific fuel supply valve 17 cylinder specific fuel supply valve 18 vent valve 19 pressure sensor 20 purification system 21 blocking element

Claims (4)

ガス燃料を用いて、二元燃料エンジンとして構成された内燃機関（１０）を始動準備するための方法であって、
前記内燃機関（１０）は、シリンダ（１２）の群（１１）を少なくとも１つ有しており、
前記シリンダ（１２）の群（１１）には、ガス燃料が、燃料供給システム（１３）を通じて供給可能であり、前記燃料供給システムは、シリンダ群固有の燃料供給導管（１４）と、前記シリンダ群固有の燃料供給導管（１４）から分岐し、各群（１１）の前記シリンダ（１２）に至るシリンダ固有の燃料供給導管（１５）と、シリンダ群固有の燃料供給弁（１６）と、シリンダ固有の燃料供給弁（１７）と、通気弁（１８）と、を有しており、
前記燃料供給システム（１３）は、浄化システム（２０）によって、浄化媒体、特に空気又は窒素等の不活性ガスを用いて、前記通気弁（１８）が開放されている場合に浄化可能であり、
当該方法は、以下のステップ：
まず、前記シリンダ群固有の燃料供給弁（１６）が閉じられ、前記シリンダ固有の燃料供給弁（１７）が閉じられ、前記通気弁（１８）が閉じられた場合に、前もってガス燃料が放出されていた前記燃料供給システム（１３）に、浄化媒体が所定の方法で充填され、前記燃料供給システム（１３）内に広まっている圧力が、所定の期間にわたって、所定の圧力範囲内にあるかが監視されるステップａ）を含み、
－ ステップａ）において前記燃料供給システム（１３）内に広まっている圧力が所定の期間にわたって所定の圧力範囲内にあることが確認される場合、前記燃料供給システム（１３）にガス燃料が充填される、後続のステップｂ）において、ガス燃料が放出された前記燃料供給システム（１３）への浄化媒体の所定の充填が、前記浄化システム（２０）の前記燃料供給システム（１３）への接続を通じて手動で行われ、
－ ステップａ）において前記燃料供給システム（１３）内に広まっている圧力が所定の期間にわたって所定の圧力範囲内に圧力領域内にないことが確認される場合、前記ステップｂ）は行われず、警報が発せられる、ことを特徴とする、方法。 A method for priming an internal combustion engine (10) configured as a dual fuel engine using gas fuel, comprising:
The internal combustion engine (10) has at least one group (11) of cylinders (12),
Said group (11) of cylinders (12) can be supplied with gaseous fuel through a fuel supply system (13), said fuel supply system comprising a cylinder group specific fuel supply conduit (14) and said cylinder group cylinder-specific fuel supply conduits (15) branching from individual fuel supply conduits (14) to said cylinders (12) of each group (11); cylinder group-specific fuel supply valves (16); cylinder-specific a fuel supply valve (17) and a vent valve (18),
said fuel supply system (13) is purgable by means of a purifying system (20) with a purifying medium, in particular air or an inert gas such as nitrogen, when said vent valve (18) is open;
The method includes the following steps:
First, gaseous fuel is released beforehand when the cylinder group specific fuel supply valve (16) is closed, the cylinder specific fuel supply valve (17) is closed and the vent valve (18) is closed. The fuel supply system (13) which had been in use is filled in a predetermined manner with a purification medium and it is determined whether the pressure prevailing in the fuel supply system (13) is within a predetermined pressure range for a predetermined period of time. comprising monitored step a);
- if in step a) it is determined that the pressure prevailing in said fuel supply system (13) is within a predetermined pressure range for a predetermined period of time, said fuel supply system (13) is filled with gas fuel; in a subsequent step b) a predetermined filling of the fuel supply system (13) from which gaseous fuel has been released with a purification medium through the connection of the purification system (20) to the fuel supply system (13) done manually ,
- if in step a) it is determined that the pressure prevailing in said fuel supply system (13) is not within a pressure range within a predetermined pressure range for a predetermined period of time, said step b) is not performed and an alarm is given; is emitted . 後続のステップｃ）において、前記内燃機関（１０）が、ガス燃料で始動することを特徴とする、請求項１に記載の方法。 2. Method according to claim 1, characterized in that in a subsequent step c) the internal combustion engine (10) is started with gas fuel. 前記ステップａ）において前記燃料供給システム（１３）内に広まっている圧力が、所定の期間にわたっては所定の圧力領域内にないことが確認される場合、始動準備が中止されることを特徴とする、請求項１又は２に記載の方法。 CHARACTERIZED IN THAT if it is determined in step a) that the pressure prevailing in the fuel supply system (13) is not within a predetermined pressure range for a predetermined period of time, the start-up preparation is aborted. , a method according to claim 1 or 2. 前記ステップａ）において、前記燃料供給システム（１３）の前記シリンダ群固有の燃料供給導管（１４）内に広まっている圧力が検出され、評価されることを特徴とする、請求項１から３のいずれか一項に記載の方法。 4. The method of claim 1, wherein in step a) the prevailing pressure in the cylinder group-specific fuel supply conduit (14) of the fuel supply system (13) is detected and evaluated. A method according to any one of paragraphs.
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KR20190074990A (en) 2019-06-28

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