JP2013525684A - 対向ピストン式エンジン用の燃焼室構造 - Google Patents
対向ピストン式エンジン用の燃焼室構造 Download PDFInfo
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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
- F02B75/00—Other engines
- F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
- F01B7/02—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons
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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
- 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
- F02B23/0618—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 having in-cylinder means to influence the charge motion
- F02B23/0621—Squish flow
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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
- 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
- F02B23/0618—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 having in-cylinder means to influence the charge motion
- F02B23/0624—Swirl flow
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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
- 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
- F02B23/0633—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 the combustion space being almost completely enclosed in the piston, i.e. having a small inlet in comparison to its volume
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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
- 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
- F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
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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
- 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
- F02B23/0663—Details related to the fuel injector or the fuel spray having multiple injectors per combustion chamber
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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
- 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
- F02B23/0675—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 the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic
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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
- 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
- F02B23/0678—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets
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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
- F02B75/00—Other engines
- F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
- F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/24—Pistons having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
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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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/48—Tumble motion in gas movement in cylinder
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Dispersion Chemistry (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
Claims (37)
- 長手方向に離間された排気ポートおよび吸気ポートを有する少なくとも1つのシリンダと、前記シリンダのボア内に互いに向かい合って配置される一対のピストンとを含む内燃機関用の燃焼室構造であって、前記ピストンの対向する端面の周辺領域の間に画定されるスキッシュ・ゾーンと、前記端面の間に画定される細長いキャビティと、前記スキッシュ・ゾーンを通して前記キャビティの中に延在する少なくとも1つの噴射ポートとを含む、燃焼室構造。
- 前記キャビティが、第1の端面のボウルと第2の端面の平坦面との間に画定される、請求項1に記載の燃焼室構造。
- 前記ボウルが、クラム・シェル形状を有する、請求項2に記載の燃焼室構造。
- 前記キャビティが、第1の端面のボウルと第2の端面のボウルとの間に画定される、請求項1に記載の燃焼室構造。
- 各ピストンの前記ボウルが、前記ピストンの内部向かって前記端面から内方へ湾曲する第1の部分と、前記端面から外に向かって突出する第2の部分とを有する凹面を画定するボウルである、請求項4に記載の燃焼室構造。
- 前記キャビティが、概ね細長い楕円形状を有する、請求項5に記載の燃焼室構造。
- 前記少なくとも1つの噴射ポートが、スキッシュ・ゾーンを通して概ね半径方向に延在する、請求項1に記載の燃焼室構造。
- 長手方向に離間された排気ポートおよび吸気ポートを有する少なくとも1つのシリンダと、前記シリンダのボア内に互いに向かい合って配置される一対のピストンとを含む内燃機関であって、燃焼室が、前記ピストンの対向する端面の間に画定され、前記ピストンのうちの少なくとも1つの端面が、前記端面の周縁部を画定する円周方向領域と周縁部内のボウルとを有し、前記ボウルが、前記円周方向接触領域を含む平面から前記ピストンの内部に向かって内方へ湾曲する第1の部分と、前記ピストンの内部から前記円周方向接触領域を含む平面を通って外に向かって湾曲する第2の部分とを有する凹面を画定する、内燃機関。
- 各ボウルが、概ね半楕円形状を有する、請求項8に記載の内燃機関。
- 前記対向するピストンは、前記ピストンが前記ボア内でそれぞれの上死点(TDC)位置の近くにある場合に、細長い楕円形状を有する燃焼室が前記ボウルの間に画定されように、前記ボア内に方向付けられる、請求項8に記載の内燃機関。
- 少なくとも1つの噴射器ポートが、前記燃焼室の長軸上の位置において前記シリンダに設けられる、請求項10に記載の内燃機関。
- 前記対向するピストンは、前記各ピストンがそれぞれの上死点(TDC)位置の近くにある場合に細長いテーパ状のシリンダの形状を有する燃焼室がボウルの間に画定され、かつ少なくとも1つの噴射ポートが前記燃焼室の長軸を横断する線上で前記シリンダに設けられるように、前記ボア内に方向付けられる、請求項8に記載の内燃機関。
- 前記噴射器ポートが、前記燃焼室の長軸に対して概ね垂直な線上で前記シリンダに設けられる、請求項12に記載の内燃機関。
- 各端面が、前記周縁部内に、前記円周方向接触領域を含む前記平面から外に向かって湾曲する、凸面をさらに含み、前記凸面が、リッジを形成するように前記凹面の第2の部分に出会う、請求項8に記載の内燃機関。
- 前記対向するピストンは、前記各ピストンが前記ボア内でそれぞれの上死点(TDC)位置の近くにある場合に各ピストンの端面の凸面が、他のピストンの凹面の第2の部分でスキッシュ・ゾーンを画定するように、前記ボア内に方向付けられる、請求項14に記載の内燃機関。
- 前記ピストンが前記ボア内でそれぞれの上死点(TDC)位置の近くにある場合に、各スキッシュ・ゾーンの対向する凹面部分および凸面部分が、前記ボウルの間で画定されるキャビティに向かってスキッシュ流を生じる、請求項15に記載の内燃機関。
- 少なくとも1つの噴射器ポートが、前記キャビティの長軸上の位置において前記シリンダに設けられる、請求項16に記載の内燃機関。
- 少なくとも1つの噴射器ポートが、前記キャビティの長手方向軸線を横断する線上で前記シリンダに設けられる、請求項16に記載の内燃機関。
- 前記噴射器ポートが、前記キャビティの長手方向軸線に対して概ね垂直な線上で前記シリンダに設けられる、請求項18に記載の内燃機関。
- 対向するピストンの端面で燃焼室を画定するための端面を有するピストンであって、前記端面が、前記端面の周縁部および前記周縁部内のボウルを画定するように、前記ピストンの長手方向軸線上で心出しされる円周方向領域を有し、前記ボウルが、前記円周方向接触領域を含む平面から前記ピストンの内部に向かって内方へ湾曲する第1の部分と、前記ピストンの内部から前記平面を通して外に向かって湾曲する第2の部分とで凹面を画定する、ピストン。
- 前記端面が、前記周縁部内に、前記円周方向接触領域を含む平面から外に向かって湾曲する、凸面をさらに含み、前記凸面が、リッジを形成するように前記凹面の前記第2の部分に出会う、請求項20に記載のピストン。
- 前記ボウルが、半楕円形状を有する、請求項20に記載のピストン。
- 少なくとも1つのノッチが、前記ボウルの長軸上の位置において前記周縁部に設けられる、請求項21に記載のピストン。
- 少なくとも1つのノッチが、前記ボウルの長軸を横断する線上で前記周縁部に設けられる、請求項21に記載のピストン。
- 前記ノッチが、概ね半楕円形状の前記長手方向軸線に対して概ね垂直な線上で前記周縁部に設けられる、請求項24に記載のピストン。
- 長手方向に離間された排気ポートおよび吸気ポートを有する少なくとも1つのシリンダと、前記シリンダのボア内に互いに向かい合って配置される一対のピストンとを含む内燃機関を運転する方法であって、前記ピストンが前記ボア内でそれぞれの下死点位置から移動するにつれて前記吸気ポートを通して前記ボアの中に空気を導入することと、前記ピストンが前記ボア内でそれぞれの上死点位置に向かって移動すると、前記ピストンの対向する端面の間で空気の充填時にタンブリング運動を引き起こすことと、燃焼室の中に燃料のチャージを噴射することとによって、運転する方法。
- 細長い楕円形状を有する燃焼室を画定するように、共に向き合った前記ピストンの端面上の前記対向するボウルを移動させることを含む、請求項26に記載の方法。
- 空気の前記チャージの中に燃料のチャージを噴射することが、前記燃焼室の長軸に沿って前記燃料を噴射することを含む、請求項26に記載の方法。
- 空気の前記チャージの中に燃料のチャージを噴射することが、前記燃焼室の長軸を横切って前記燃料を噴射することを含む、請求項26に記載の方法。
- 空気の前記チャージの中に燃料のチャージを噴射することが、前記長軸に垂直に前記燃料を噴射することを含む、請求項29に記載の方法。
- 旋回運動が、前記ボアの中に導入される前記空気に強いられる、請求項26に記載の方法。
- 長軸を有する細長い楕円形状を有する燃焼室を画定するように、共に向き合った前記ピストンの端面で前記対向するボウルを移動させることを含む、請求項31に記載の方法。
- 空気の前記チャージの中に燃料のチャージを噴射することが、前記長軸に沿って前記燃料を噴射することを含む、請求項32に記載の方法。
- 長手方向に離間された排気ポートおよび吸気ポートを有する少なくとも1つのシリンダと、前記シリンダのボア内で往復運動できるように向かい合って配置される一対のピストンとを含む内燃機関を運転する方法であって、前記ピストンが前記ボア内でそれぞれの上死点位置に向かって移動すると、前記ピストンの端面の間に細長い楕円形状を有する燃焼室を形成することと、前記細長い楕円形状の長軸に対して斜めに向けられた方向に前記燃焼室の中にチャージエアのスキッシュ流を形成することと、前記スキッシュ流および旋回チャージエアに応じて前記燃焼室内にチャージエアの少なくとも1つのタンブリング運動を発生させることと、前記燃焼室の中に燃料を噴射することとによって、運転する方法。
- 前記燃焼室の中に燃料のチャージを噴射することが、前記長軸に沿って前記燃料を噴射することを含む、請求項34に記載の方法。
- 少なくとも1つのタンブリング運動を発生させることが、長軸の周りに第1のタンブリング運動を発生させることと、前記長軸に直交する軸の周りに第2のタンブリング運動を発生させることとを含む、請求項34に記載の方法。
- 前記燃焼室の中に燃料のチャージを噴射することが、前記長軸に沿って燃料の対向する噴霧を噴射することを含む、請求項34に記載の方法。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
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US34330810P | 2010-04-27 | 2010-04-27 | |
US61/343,308 | 2010-04-27 | ||
US39584510P | 2010-05-18 | 2010-05-18 | |
US61/395,845 | 2010-05-18 | ||
US40159810P | 2010-08-16 | 2010-08-16 | |
US61/401,598 | 2010-08-16 | ||
PCT/US2011/000692 WO2011139332A2 (en) | 2010-04-27 | 2011-04-18 | Combustion chamber constructions for opposed-piston engines |
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JP2013525684A true JP2013525684A (ja) | 2013-06-20 |
JP2013525684A5 JP2013525684A5 (ja) | 2014-05-29 |
JP5782109B2 JP5782109B2 (ja) | 2015-09-24 |
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US (2) | US8800528B2 (ja) |
EP (1) | EP2547868B1 (ja) |
JP (1) | JP5782109B2 (ja) |
CN (1) | CN102947545B (ja) |
WO (1) | WO2011139332A2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015522122A (ja) * | 2012-07-02 | 2015-08-03 | ピナクル・エンジンズ・インコーポレイテッドPinnacle Engines, Inc. | 可変圧縮比ディーゼルエンジン |
JP2017101679A (ja) * | 2014-02-12 | 2017-06-08 | アカーテース パワー,インク. | 低反応性圧縮着火対向ピストンエンジン |
WO2022202739A1 (ja) * | 2021-03-26 | 2022-09-29 | 三菱重工業株式会社 | 対向ピストンエンジン |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102947545B (zh) | 2010-04-27 | 2015-11-25 | 阿凯提兹动力公司 | 用于对置活塞发动机的燃烧室构造 |
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- 2011-04-18 JP JP2013507938A patent/JP5782109B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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WO2011139332A2 (en) | 2011-11-10 |
US20110271932A1 (en) | 2011-11-10 |
EP2547868B1 (en) | 2016-08-03 |
JP5782109B2 (ja) | 2015-09-24 |
WO2011139332A3 (en) | 2012-01-05 |
US20150013649A1 (en) | 2015-01-15 |
CN102947545A (zh) | 2013-02-27 |
EP2547868A2 (en) | 2013-01-23 |
CN102947545B (zh) | 2015-11-25 |
US8800528B2 (en) | 2014-08-12 |
US9593627B2 (en) | 2017-03-14 |
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