JPWO2014181867A1 - ユニフロー掃気式2サイクルエンジン - Google Patents
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- 230000002000 scavenging effect Effects 0.000 title claims abstract description 90
- 238000002347 injection Methods 0.000 claims abstract description 264
- 239000007924 injection Substances 0.000 claims abstract description 264
- 239000007789 gas Substances 0.000 claims abstract description 113
- 239000002737 fuel gas Substances 0.000 claims abstract description 56
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 239000000446 fuel Substances 0.000 description 39
- 230000004048 modification Effects 0.000 description 14
- 238000012986 modification Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
- F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
- F02B25/06—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke the cylinder-head ports being controlled by working pistons, e.g. by sleeve-shaped extensions thereof
-
- 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
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- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
- F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
-
- 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
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
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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
- 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
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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
- 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
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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
- 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
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
-
- 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
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
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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
- F02D19/08—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
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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
- F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
- F02D2400/04—Two-stroke combustion engines with electronic control
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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
- F02D41/0025—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
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3035—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode
- F02D41/3041—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode with means for triggering compression ignition, e.g. spark plug
- F02D41/3047—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode with means for triggering compression ignition, e.g. spark plug said means being a secondary injection of fuel
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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
- Y02T10/12—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
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- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
本願は、2013年5月10日に日本に出願された特願2013−100527号に基づき優先権を主張し、その内容をここに援用する。
図1は、ユニフロー掃気式2サイクルエンジン100の全体構成を示す図である。本実施形態のユニフロー掃気式2サイクルエンジン100は、例えば、船舶等に用いられる。具体的に、ユニフロー掃気式2サイクルエンジン100は、シリンダ110(シリンダヘッド110a、シリンダブロック110b)と、ピストン112と、パイロット噴射弁114と、排気ポート116と、排気弁駆動装置118と、排気弁120と、掃気ポート122と、掃気室124と、燃料噴射部126と、ロータリエンコーダ130と、燃焼室140と、を含んで構成され、ガバナー(調速機)150、燃料噴射制御部152、排気制御部154等の制御部によって制御される。
図6Aに示すように、燃料噴射部226においては、混合管226aが、混合管226bよりも掃気室124から離隔しており、流通管226eの長さが、流通管226fよりも長くなっている。すなわち、開閉弁126cから第1噴射部群160の第1噴射部226gまでの距離は、開閉弁126dから第2噴射部群162の第2噴射部226hまでの距離よりも長い。
図6Bに示すように、燃料噴射部326においては、流通管326eの方が流通管326fよりも、予混合気(燃料ガス)の流れに垂直な方向に沿った流路の面積が小さい。すなわち、噴射部(第1噴射部326g、第2噴射部326h)を出口端とする予混合気の流路は、第1噴射部群160の方が第2噴射部群162よりも、予混合気の流れに垂直な方向の流路面積が小さい。流路面積が小さい方が、圧力損失の影響によって予混合気の流速が遅くなり、噴射部に到達するタイミングが遅れる。
第3変形例においては、第1噴射部126g、第2噴射部126hの他に、第3噴射部が設けられている。第3噴射部は、第2噴射部126hよりもストローク方向の一端側に配され、第3噴射部で第3噴射部群が構成される。すなわち、噴射部は、2つの異なるストローク方向の位置を境界として、第1噴射部群160と、第2噴射部群162と、第3噴射部群に分けられる。
110 シリンダ
112 ピストン
122 掃気ポート
126、226、326 燃料噴射部
126g、226g、326g 第1噴射部(噴射部)
126h、226h、326h 第2噴射部(噴射部)
160 第1噴射部群
162 第2噴射部群
Claims (7)
- 内部に燃焼室が形成されるシリンダと、
前記シリンダ内を摺動するピストンと、
前記シリンダにおける前記ピストンのストローク方向の一端側に設けられ、前記ピストンの摺動動作に応じて前記燃焼室に活性ガスを吸入する掃気ポートと、
前記掃気ポートに吸入される活性ガスに燃料ガスを噴射する、前記掃気ポートの内周面、または、この内周面よりも前記シリンダの外側に設けられた開口を含む、前記ピストンのストローク方向の位置を異にする複数の噴射部と、
を備え、
前記複数の噴射部は、前記ストローク方向の他端側にある1または複数の噴射部の組である第1噴射部群と、第1噴射部群よりも、前記ストローク方向の一端側にある1または複数の噴射部の組である第2噴射部群との、少なくとも2つの組に分けられ、
前記第1噴射部群の前記噴射部は、前記第2噴射部群の前記噴射部より、前記燃料ガスの噴射停止が遅いユニフロー掃気式2サイクルエンジン。 - 内部に燃焼室が形成されるシリンダと、
前記シリンダ内を摺動するピストンと、
前記シリンダにおける前記ピストンのストローク方向の一端側に設けられ、前記ピストンの摺動動作に応じて前記燃焼室に活性ガスを吸入する掃気ポートと、
前記掃気ポートに吸入される活性ガスに燃料ガスを噴射する、前記掃気ポートの内周面、または、この内周面よりも前記シリンダの外側に設けられた開口を含む、前記ピストンのストローク方向の位置を異にする複数の噴射部と、
を備え、
前記複数の噴射部は、前記ストローク方向の他端側にある1または複数の噴射部の組である第1噴射部群と、第1噴射部群よりも、前記ストローク方向の一端側にある1または複数の噴射部の組である第2噴射部群との、少なくとも2つの組に分けられ、
前記第1噴射部群の前記噴射部は、前記第2噴射部群の前記噴射部より、前記燃料ガスの噴射開始が遅いユニフロー掃気式2サイクルエンジン。 - 前記第1噴射部群の前記噴射部は、前記第2噴射部群の前記噴射部より、前記燃料ガスの噴射停止が遅い、請求項2に記載のユニフロー掃気式2サイクルエンジン。
- 前記噴射部に供給される前記燃料ガスの流路を開閉する開閉弁をさらに備え、
前記開閉弁から前記噴射部までの距離は、前記第1噴射部群の方が前記第2噴射部群よりも長い、請求項1に記載のユニフロー掃気式2サイクルエンジン。 - 前記噴射部に供給される前記燃料ガスの流路を開閉する開閉弁をさらに備え、
前記開閉弁から前記噴射部までの距離は、前記第1噴射部群の方が前記第2噴射部群よりも長い、請求項2に記載のユニフロー掃気式2サイクルエンジン。 - 前記噴射部に供給される前記燃料ガスの流路を開閉する開閉弁をさらに備え、
前記開閉弁から前記噴射部までの距離は、前記第1噴射部群の方が前記第2噴射部群よりも長い、請求項3に記載のユニフロー掃気式2サイクルエンジン。 - 前記噴射部を出口端とする前記燃料ガスの流路は、前記第1噴射部群の方が前記第2噴射部群よりも、燃料ガスの流れに垂直な方向の流路面積が小さい、請求項1から6のいずれか1項に記載のユニフロー掃気式2サイクルエンジン。
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JP2013100527 | 2013-05-10 | ||
JP2013100527 | 2013-05-10 | ||
PCT/JP2014/062473 WO2014181867A1 (ja) | 2013-05-10 | 2014-05-09 | ユニフロー掃気式2サイクルエンジン |
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WO2014181861A1 (ja) | 2013-05-10 | 2014-11-13 | 株式会社Ihi | ユニフロー掃気式2サイクルエンジン |
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JPS62129518A (ja) * | 1985-11-28 | 1987-06-11 | Mitsubishi Heavy Ind Ltd | 掃気ポ−ト管制式内燃機関 |
CN1031808C (zh) * | 1993-03-26 | 1996-05-15 | 西安电子科技大学 | 滚锥蜗杆传动机构 |
JPH06346737A (ja) * | 1993-06-07 | 1994-12-20 | Mitsubishi Heavy Ind Ltd | ディーゼル機関の掃気装置 |
EP0651151B1 (de) * | 1993-10-29 | 1998-09-16 | Wärtsilä NSD Schweiz AG | Hubkolbenbrennkraftmaschine der Dieselbauart |
DK176118B1 (da) | 1997-04-29 | 2006-09-04 | Man B & W Diesel As | Fremgangsmåde til drift af en trykladet dual fuel forbrændingsmotor af dieseltypen og en sådan motor |
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JP2011122465A (ja) * | 2009-12-08 | 2011-06-23 | Denso Corp | 燃料噴射制御装置 |
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JP5811539B2 (ja) * | 2011-01-24 | 2015-11-11 | 株式会社Ihi | 2サイクルエンジン |
JP5811538B2 (ja) * | 2011-01-24 | 2015-11-11 | 株式会社Ihi | 2サイクルエンジン |
DE102011003909B4 (de) * | 2011-02-10 | 2018-05-30 | Man Diesel & Turbo Se | Zweitaktbrennkraftmaschine und Verfahren zum Betreiben derselben |
DE102011050087A1 (de) * | 2011-05-04 | 2012-11-22 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Hubkolbenverbrennungskraftmaschine |
JP2013060863A (ja) * | 2011-09-13 | 2013-04-04 | Hitachi Automotive Systems Ltd | 内燃機関の制御装置 |
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2014
- 2014-05-09 CN CN201480025832.7A patent/CN105189968B/zh active Active
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- 2014-05-09 DK DK14794160.3T patent/DK2995794T3/en active
- 2014-05-09 JP JP2015515909A patent/JP5974379B2/ja active Active
- 2014-05-09 KR KR1020157030422A patent/KR101809697B1/ko active IP Right Grant
- 2014-05-09 EP EP14794160.3A patent/EP2995794B1/en active Active
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JP5974379B2 (ja) | 2016-08-23 |
CN105189968B (zh) | 2018-04-13 |
DK2995794T3 (en) | 2018-05-22 |
EP2995794A1 (en) | 2016-03-16 |
EP2995794B1 (en) | 2018-03-14 |
KR101809697B1 (ko) | 2017-12-15 |
CN105189968A (zh) | 2015-12-23 |
US20160061099A1 (en) | 2016-03-03 |
WO2014181867A1 (ja) | 2014-11-13 |
EP2995794A4 (en) | 2017-01-04 |
KR20150132586A (ko) | 2015-11-25 |
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