KR101967591B1 - 엔진 장치 - Google Patents
엔진 장치 Download PDFInfo
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- KR101967591B1 KR101967591B1 KR1020187006447A KR20187006447A KR101967591B1 KR 101967591 B1 KR101967591 B1 KR 101967591B1 KR 1020187006447 A KR1020187006447 A KR 1020187006447A KR 20187006447 A KR20187006447 A KR 20187006447A KR 101967591 B1 KR101967591 B1 KR 101967591B1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/061—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating conditions
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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
- F02D19/0618—Switch-over from one fuel to another depending on the engine's or vehicle's position, e.g. on/off road or proximity to a harbor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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- F02D19/0623—Failure diagnosis or prevention; Safety measures; Testing
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F02D19/0647—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 the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
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- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0689—Injectors for in-cylinder direct injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0692—Arrangement of multiple injectors per combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- 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
- F02D19/08—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 simultaneously using pluralities of fuels
- F02D19/10—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 simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous
- F02D19/105—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 simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous operating in a special mode, e.g. in a liquid fuel only mode for starting
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
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- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
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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
- 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
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- 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
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3064—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- 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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- 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
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
- Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, 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)
- Ocean & Marine Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
도 2는 기관실의 측면 단면도이다.
도 3은 기관실의 평면 설명도이다.
도 4는 본 발명의 실시형태에 있어서의 엔진 장치의 연료 공급로의 구성을 나타내는 개략도이다.
도 5는 동엔진 장치에 있어서의 흡배기로의 구성을 나타내는 개략도이다.
도 6은 동엔진 장치에 있어서의 실린더 헤드 내의 구성을 모식적으로 나타낸 개략도이다.
도 7은 동엔진 장치의 제어 블럭도이다.
도 8은 가스 모드 및 디젤 모드 각각에 있어서의 실린더 내의 동작을 나타내는 설명도이다.
도 9는 6기통으로 구성하는 엔진 장치에 있어서의 각 실린더의 동작 상태를 나타내는 상태 천이도이다.
도 10은 본 발명의 실시형태에 있어서의 엔진 장치의 배기 매니폴드 설치측(우측면)을 나타내는 사시도이다.
도 11은 동엔진 장치의 연료 분사 펌프 설치측(좌측면)을 나타내는 사시도이다.
도 12는 동엔진 장치의 좌측면도이다.
도 13은 동엔진 장치를 가스 모드로 운전시켰을 때의 부하에 대한 공연비 제어를 설명하기 위한 도이다.
도 14는 엔진 제어 장치에 의한 가스 모드에 있어서의 연료 공급 제어의 기본 동작을 나타내는 플로우 차트이다.
도 15는 저부하 또한 저회전수에 있어서의 엔진 장치를 가스 모드로부터 디젤 모드로 스위칭했을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수의 관계를 나타내는 타이밍 차트이다.
도 16은 고부하 또한 고회전수에 있어서의 엔진 장치를 가스 모드로부터 디젤 모드로 스위칭했을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수의 관계를 나타내는 타이밍 차트이다.
도 17은 엔진 제어 장치에 의한 디젤 모드에 있어서의 연료 공급 제어의 동작을 나타내는 플로우 차트이다.
도 18은 저부하 또한 저회전수에 있어서의 엔진 장치를 디젤 모드로부터 가스 모드로 스위칭했을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수의 관계를 나타내는 타이밍 차트이다.
도 19는 고부하 또한 고회전수에 있어서의 엔진 장치를 디젤 모드로부터 가스 모드로 스위칭했을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수의 관계를 나타내는 타이밍 차트이다.
도 20은 엔진 제어 장치에 의한 가스 모드에 있어서의 연료 공급 제어의 제 1 실시예에 있어서의 동작을 나타내는 플로우 차트이다.
도 21은 저부하 또한 저회전수에 있어서의 엔진 장치에 대하여 디젤 모드로의 순시 스위칭을 실행시켰을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수의 관계를 나타내는 타이밍 차트이다.
도 22는 고부하 또한 고회전수에 있어서의 엔진 장치에 대하여 디젤 모드로의 순시 스위칭을 실행시켰을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수의 관계를 나타내는 타이밍 차트이다.
도 23은 엔진 제어 장치에 의한 가스 모드에 있어서의 연료 공급 제어의 제 2 실시예에 있어서의 동작을 나타내는 플로우 차트이다.
도 24는 엔진 제어 장치에 의한 디젤 모드에 있어서의 연료 공급 제어의 제 1 실시예에 있어서의 동작을 나타내는 플로우 차트이다.
도 25는 엔진 제어 장치에 의한 순시 스위칭의 판정 동작의 제 1 예를 나타내는 플로우 차트이다.
도 26은 디젤 모드로의 스위칭시에 있어서 순시 스위칭을 실행시켰을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수 및 엔진 부하와의 관계를 나타내는 타이밍 차트이다.
도 27은 엔진 제어 장치에 의한 순시 스위칭의 판정 동작의 제 2 예를 나타내는 플로우 차트이다.
도 28은 디젤 모드로의 스위칭시에 있어서 순시 스위칭을 실행시켰을 때의 연료 가스 및 연료유의 공급량의 천이와 엔진 회전수 및 엔진 부하와의 관계를 나타내는 타이밍 차트이다.
도 29는 엔진 제어 장치에 의한 순시 스위칭의 판정 동작의 제 3 예를 나타내는 플로우 차트이다.
4 펀넬 5 프로펠러
9 추진 축 11 기관실
12 추진 겸 발전 기구 17 급기 바이패스 유로
18 배기 바이패스 유로 19 부하 측정기
20 엔진 회전 센서 21 엔진 장치(듀얼 퓨얼 엔진)
22 감속기 23 축 구동 발전기
24 출력축(크랭크축) 25 실린더 블록
26 실린더 헤드 36 기통
37 흡기 포트 38 배기 포트
39 압력 센서 40 헤드 커버
41 가스 매니폴드(기체 연료 배관) 42 연료유관(액체 연료 배관)
43 사이드 커버 44 배기 매니폴드
45 차열 커버 46 냉각수 배관
47 커먼 레일(파일럿 연료 배관) 48 배기 중계관
49 과급기 51 인터쿨러
53 냉각수 펌프 54 파일럿 연료 펌프
55 윤활유 펌프 56 연료유 펌프
57 오일 팬 58 윤활유 쿨러
59 윤활유 스트레이너 67 흡기 매니폴드
79 메인 연료 분사 밸브 80 흡기 밸브
81 배기 밸브 82 파일럿 연료 분사 밸브
89 연료 분사 펌프 98 가스 인젝터
Claims (6)
- 실린더 내에 공기를 공급시키는 흡기 매니폴드와, 상기 실린더로부터의 배기가스를 배기시키는 배기 매니폴드와, 상기 흡기 매니폴드로부터 공급되는 공기에 기체 연료를 혼합시키는 가스 인젝터와, 상기 실린더에 액체 연료를 분사하여 연소시키는 메인 연료 분사 밸브를 구비하고, 복수의 상기 실린더 각각에 대하여 상기 가스 인젝터와 상기 메인 연료 분사 밸브가 설치되어 있고, 상기 실린더 내에 상기 기체 연료를 투입하는 가스 모드와 상기 실린더 내에 상기 액체 연료를 투입하는 디젤 모드 중 어느 하나로 구동하는 엔진 장치에 있어서,
상기 가스 모드 및 상기 디젤 모드 중 일방으로부터 타방으로 운전 모드를 스위칭할 때에, 엔진 회전수가 엔진 장치를 긴급 정지시키는 상한값에 근접한 것으로 판단했을 때에 상기 디젤 모드로 순시에 스위칭되는 것을 특징으로 하는 엔진 장치. - 제 1 항에 있어서,
상기 운전 모드의 스위칭시에 있어서, 측정된 엔진 회전수가 긴급 정지시키는 상한의 엔진 회전수보다 낮고 소정 회전수보다 높아진 경우에, 상기 디젤 모드로 순시에 스위칭되는 것을 특징으로 하는 엔진 장치. - 제 1 항에 있어서,
상기 운전 모드의 스위칭시에 있어서, 스위칭 개시시의 엔진 부하와의 감소량이 소정량보다 커진 경우에, 상기 디젤 모드로 순시에 스위칭되는 것을 특징으로 하는 엔진 장치. - 제 1 항에 있어서,
상기 운전 모드의 스위칭시에 있어서, 기체 연료 공급량에 대한 액체 연료 공급량의 비율이 소정값보다 작아진 경우에, 상기 디젤 모드로 순시에 스위칭되는 것을 특징으로 하는 엔진 장치. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 가스 모드로부터 상기 디젤 모드로 순시에 스위칭될 때에는 상기 디젤 모드로 스위칭된 후의 액체 연료의 공급량을 엔진 회전수 또는 엔진 부하에 의거하여 설정하여 상기 액체 연료의 공급을 개시하는 것을 특징으로 하는 엔진 장치. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 가스 모드 및 상기 디젤 모드 중 일방으로부터 타방으로 운전 모드를 스위칭할 때에, 스위칭 후의 운전 모드에서 투입시키는 제 1 연료의 공급량을 단조 증가시키는 증량 제어에 의해 스위칭 역치까지 증량시킨 후, 엔진 회전수에 의거하는 조속 제어에 의해 제어하고 있고,
상기 스위칭 역치를 엔진 회전수 또는 엔진 부하에 의거하여 설정하고 있는 것을 특징으로 하는 엔진 장치.
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