JP2019116863A - 内燃機関 - Google Patents
内燃機関 Download PDFInfo
- Publication number
- JP2019116863A JP2019116863A JP2017251137A JP2017251137A JP2019116863A JP 2019116863 A JP2019116863 A JP 2019116863A JP 2017251137 A JP2017251137 A JP 2017251137A JP 2017251137 A JP2017251137 A JP 2017251137A JP 2019116863 A JP2019116863 A JP 2019116863A
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- Prior art keywords
- valve recess
- intake
- tumble flow
- port
- exhaust
- Prior art date
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 50
- 239000000446 fuel Substances 0.000 description 14
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
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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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
-
- 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
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0618—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
-
- 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
-
- 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
-
- 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/042—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors induction channel having a helical shape around the intake valve axis
-
- 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/08—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets
- F02B31/085—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets having two inlet valves
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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
-
- 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
- F02F3/26—Pistons having combustion chamber in piston head
-
- 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
- F02F3/28—Other pistons with specially-shaped head
-
- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
図1は、本発明の実施の形態1における内燃機関10の全体構成を模式的に表した図である。内燃機関10は、圧縮上死点付近で各気筒内に位置する燃料噴射弁18から燃料を噴射し、圧縮自着火により燃焼させる圧縮自着火式エンジン(一例として、ディーゼルエンジン)である。内燃機関10の各気筒の燃焼室12には、吸気通路14と排気通路16とが連通している。
本実施の形態においては、実施の形態1と共通する部分の説明は省略する。
燃焼室 12
吸気通路 14
吸気ポート 15
排気通路 16
排気棄 32場合に、第一バルブリセスの方が前ポート 17
燃料噴射弁 18
ECU 20
タンジェンシャルポート 22
ヘリカルポート 24
吸気弁 25
排気弁 27
吸気側バルブリセス 31
排気側バルブリセス 32
Claims (3)
- 燃焼室内にスワールを発生させる機構と、
吸気弁との干渉を避けるために凹設された面である吸気側バルブリセスおよび排気弁との干渉を避けるために凹設された面である排気側バルブリセスを有するピストンと、
を備える内燃機関において、
前記燃焼室内上面を吸気ポート側から排気ポート側に流れるタンブル流である順タンブル流よりも前記燃焼室内下面を吸気ポート側から排気ポート側に流れるタンブル流である逆タンブル流の方が流量が少ない場合は、前記吸気側バルブリセスを第一バルブリセス、前記排気側バルブリセスを第二バルブリセスとし、
前記順タンブル流よりも前記逆タンブル流の方が流量が多い場合は、前記排気側バルブリセスを第一バルブリセス、前記吸気側バルブリセスを第二バルブリセスとし、
前記ピストンを前記第一バルブリセスとそれと隣り合う前記第二バルブリセスを通るピストンの中心軸と平行な断面に切った場合に、前記第一バルブリセスの方が前記第二バルブリセスよりも前記断面の内側方向が低くなる傾斜角が大きいことを特徴とする内燃機関。 - 2つの吸気ポートを備え、前記吸気ポートはタンジェンシャルポートとヘリカルポートであり、
前記タンジェンシャルポートとヘリカルポートは、順タンブル流よりも逆タンブル流の方が流量が少なくなる形状となっており、
前記タンジェンシャルポートに対応するバルブリセスの方が前記ヘリカルポートに対応するバルブリセスよりも、前記断面の中心方向に傾斜していることを特徴とする、請求項1に記載の内燃機関。 - 吸気ポート側の前記バルブリセスの少なくとも一つと、排気ポート側の前記バルブリセスの少なくとも一つが平行に設置されていることを特徴とする、請求項1または請求項2の何れかに記載の内燃機関。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017251137A JP6897557B2 (ja) | 2017-12-27 | 2017-12-27 | 内燃機関 |
DE102018133550.4A DE102018133550B4 (de) | 2017-12-27 | 2018-12-21 | Verbrennungskraftmaschine |
US16/232,199 US10711685B2 (en) | 2017-12-27 | 2018-12-26 | Internal combustion engine |
CN201811599914.9A CN109973206B (zh) | 2017-12-27 | 2018-12-26 | 内燃机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017251137A JP6897557B2 (ja) | 2017-12-27 | 2017-12-27 | 内燃機関 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019116863A true JP2019116863A (ja) | 2019-07-18 |
JP6897557B2 JP6897557B2 (ja) | 2021-06-30 |
Family
ID=66768411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017251137A Active JP6897557B2 (ja) | 2017-12-27 | 2017-12-27 | 内燃機関 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10711685B2 (ja) |
JP (1) | JP6897557B2 (ja) |
CN (1) | CN109973206B (ja) |
DE (1) | DE102018133550B4 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004036566A (ja) * | 2002-07-05 | 2004-02-05 | Toyota Motor Corp | 内燃機関の気筒内気流旋回方向制御装置 |
JP2007100549A (ja) * | 2005-09-30 | 2007-04-19 | Mazda Motor Corp | 火花点火式エンジン |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002295260A (ja) * | 2001-03-30 | 2002-10-09 | Mazda Motor Corp | 火花点火式直噴エンジン |
KR100471202B1 (ko) * | 2001-09-26 | 2005-03-07 | 현대자동차주식회사 | 가솔린 직접 분사식 엔진 |
JP2006152825A (ja) * | 2004-11-25 | 2006-06-15 | Toyota Motor Corp | 内燃機関の燃焼室 |
DE102005002389B4 (de) | 2005-01-19 | 2009-04-23 | Fev Motorentechnik Gmbh | Fahrzeug-Kolben-Brennkraftmaschine mit angepasster Mulde |
JP2008175133A (ja) * | 2007-01-18 | 2008-07-31 | Nissan Motor Co Ltd | 内燃機関の燃焼室構造 |
JP4254865B2 (ja) * | 2007-01-29 | 2009-04-15 | トヨタ自動車株式会社 | 内燃機関用ピストン及びそのピストンが適用された内燃機関 |
FR2925602A1 (fr) * | 2007-12-19 | 2009-06-26 | Renault Sas | Chambre de combustion dissymetrique pour moteur thermique |
DE112010005533T5 (de) * | 2010-04-30 | 2013-05-16 | Toyota Jidosha Kabushiki Kaisha | Kolben einer Kraftmaschine |
JP2013083193A (ja) | 2011-10-07 | 2013-05-09 | Honda Motor Co Ltd | ディーゼル内燃機関及びその制御装置 |
DE102012103212A1 (de) | 2012-04-13 | 2013-10-17 | Mwm Gmbh | Kolben einer Brennkraftmaschine |
JP5652466B2 (ja) | 2012-12-21 | 2015-01-14 | トヨタ自動車株式会社 | 内燃機関のピストン及び内燃機関 |
CN103615334B (zh) * | 2013-12-09 | 2016-03-02 | 安徽江淮汽车股份有限公司 | 一种带有屏蔽墙结构的缸盖、制备方法及发动机 |
JP5971313B2 (ja) | 2014-11-26 | 2016-08-17 | マツダ株式会社 | 直噴エンジンの吸気装置 |
CN106762101A (zh) | 2016-11-21 | 2017-05-31 | 清华大学 | 一种直喷汽油机燃烧系统及控制方法 |
-
2017
- 2017-12-27 JP JP2017251137A patent/JP6897557B2/ja active Active
-
2018
- 2018-12-21 DE DE102018133550.4A patent/DE102018133550B4/de active Active
- 2018-12-26 US US16/232,199 patent/US10711685B2/en active Active
- 2018-12-26 CN CN201811599914.9A patent/CN109973206B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004036566A (ja) * | 2002-07-05 | 2004-02-05 | Toyota Motor Corp | 内燃機関の気筒内気流旋回方向制御装置 |
JP2007100549A (ja) * | 2005-09-30 | 2007-04-19 | Mazda Motor Corp | 火花点火式エンジン |
Also Published As
Publication number | Publication date |
---|---|
US10711685B2 (en) | 2020-07-14 |
DE102018133550A1 (de) | 2019-06-27 |
US20190203634A1 (en) | 2019-07-04 |
DE102018133550B4 (de) | 2022-05-12 |
JP6897557B2 (ja) | 2021-06-30 |
CN109973206A (zh) | 2019-07-05 |
CN109973206B (zh) | 2020-10-30 |
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