JP2018162726A - 火花点火式内燃機関 - Google Patents
火花点火式内燃機関 Download PDFInfo
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- JP2018162726A JP2018162726A JP2017060653A JP2017060653A JP2018162726A JP 2018162726 A JP2018162726 A JP 2018162726A JP 2017060653 A JP2017060653 A JP 2017060653A JP 2017060653 A JP2017060653 A JP 2017060653A JP 2018162726 A JP2018162726 A JP 2018162726A
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- inclined surface
- side inclined
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- exhaust
- piston
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 88
- 230000002093 peripheral effect Effects 0.000 claims description 38
- 239000000446 fuel Substances 0.000 abstract description 82
- 238000002347 injection Methods 0.000 description 52
- 239000007924 injection Substances 0.000 description 52
- 230000006835 compression Effects 0.000 description 22
- 238000007906 compression Methods 0.000 description 22
- 239000000203 mixture Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 230000005764 inhibitory process Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 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
- 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
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
-
- 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
- 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
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/106—Tumble flow, i.e. the axis of rotation of the main charge flow motion is horizontal
-
- 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
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
-
- 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
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
-
- 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
【解決手段】ピストン5の頂面10に吸気側傾斜面34及び排気側傾斜面35を有する隆起部31が設けられると共に隆起部31に点火プラグに対応してキャビティ40が設けられた火花点火式内燃機関において、吸気側傾斜面34及び排気側傾斜面35は、排気側傾斜面35の傾斜角度が吸気側傾斜面34の傾斜角度よりも小さく且つ吸気側傾斜面34と排気側傾斜面35との傾斜角度差が4度以上であるように形成されている。
【選択図】図6
Description
図1は、本発明の第1実施形態に係る火花点火式内燃機関の構成を示す概略図である。図2は、前記内燃機関のピストン、燃料噴射弁及び点火プラグを示す斜視図である。図1及び図2に示すように、本発明の第1実施形態に係る火花点火式内燃機関としてのエンジン1は、複数のシリンダ2が列状に配置された多気筒のガソリンエンジンであり、自動車等の車両に搭載され、シリンダ2が形成されたシリンダブロック3と、シリンダ2上に配設されるシリンダヘッド4とを備えている。
図6は、ピストンの斜視図、図7は、ピストンの平面図、図8は、図7におけるY8−Y8線に沿ったピストンの断面図、図9は、図7におけるY9−Y9線に沿ったピストンの断面図、図10は、図7におけるY10−Y10線に沿ったピストンの断面図である。
図12は、本発明の第2実施形態に係る火花点火式内燃機関のピストンの斜視図、図13は、前記内燃機関のピストンの平面図、図14は、図13におけるY14−Y14線に沿ったピストンの断面図、図15は、図13におけるY15−Y15線に沿ったピストンの断面図である。本発明の第2実施形態に係る火花点火式内燃機関としてのエンジン51は、第1実施形態に係るエンジン1とピストンの頂面及びシリンダヘッド4の天井面12の形状が異なるものであり、エンジン1と同様の構成については同一符号を付して説明を省略する。
2 シリンダ
4 シリンダヘッド
5、55 ピストン
8 燃焼室
10、60 ピストンの頂面
12 天井面
15 吸気ポート
16 排気ポート
20 吸気弁
21 排気弁
24 燃料噴射弁
25 点火プラグ
31、61 隆起部
34、64 隆起部の吸気側傾斜面
35、65 隆起部の排気側傾斜面
40 キャビティ
Claims (2)
- シリンダと、前記シリンダ内に往復動可能に配置されたピストンと、前記シリンダ上に配設されると共に前記シリンダの内周面及び前記ピストンの頂面と共にペントルーフ型の燃焼室を形成する天井面を有するシリンダヘッドと、前記燃焼室に臨むように前記シリンダヘッドに配設された点火プラグとを備え、前記ピストンの頂面に前記シリンダヘッドの天井面に沿った吸気側傾斜面及び排気側傾斜面を有する隆起部が設けられると共に、前記隆起部に前記点火プラグに対応して下方に窪むキャビティが設けられた火花点火式内燃機関であって、
前記シリンダヘッドに、前記燃焼室内にタンブル流を生成するように吸気ポートが設けられ、
前記吸気側傾斜面及び前記排気側傾斜面は、前記排気側傾斜面の傾斜角度が前記吸気側傾斜面の傾斜角度よりも小さく且つ前記吸気側傾斜面と前記排気側傾斜面との傾斜角度差が4度以上であるように形成されている、
ことを特徴とする火花点火式内燃機関。 - 前記吸気側傾斜面及び前記排気側傾斜面はそれぞれ、吸気弁及び排気弁のバルブ軸線と直交するように設けられている、
ことを特徴する請求項1に記載の火花点火式内燃機関。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017060653A JP6515941B2 (ja) | 2017-03-27 | 2017-03-27 | 火花点火式内燃機関 |
CN201880019093.9A CN110446834B (zh) | 2017-03-27 | 2018-02-27 | 火花点火式内燃机 |
PCT/JP2018/007278 WO2018180129A1 (ja) | 2017-03-27 | 2018-02-27 | 火花点火式内燃機関 |
EP18774264.8A EP3584420A4 (en) | 2017-03-27 | 2018-02-27 | INTERNAL COMBUSTION ENGINE WITH SPARK IGNITION |
US16/493,567 US10968817B2 (en) | 2017-03-27 | 2018-02-27 | Spark-ignition internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017060653A JP6515941B2 (ja) | 2017-03-27 | 2017-03-27 | 火花点火式内燃機関 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018162726A true JP2018162726A (ja) | 2018-10-18 |
JP6515941B2 JP6515941B2 (ja) | 2019-05-22 |
Family
ID=63675327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017060653A Active JP6515941B2 (ja) | 2017-03-27 | 2017-03-27 | 火花点火式内燃機関 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10968817B2 (ja) |
EP (1) | EP3584420A4 (ja) |
JP (1) | JP6515941B2 (ja) |
CN (1) | CN110446834B (ja) |
WO (1) | WO2018180129A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022083619A (ja) * | 2020-11-25 | 2022-06-06 | マツダ株式会社 | エンジンの燃焼室構造 |
WO2022199838A1 (en) * | 2021-03-26 | 2022-09-29 | Jaguar Land Rover Limited | A piston for a lean-burn gasoline engine |
Citations (4)
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JPH11117749A (ja) * | 1997-10-21 | 1999-04-27 | Nissan Motor Co Ltd | 筒内噴射式内燃機関のピストン |
JP2000045778A (ja) * | 1998-07-31 | 2000-02-15 | Daihatsu Motor Co Ltd | 筒内噴射エンジンの燃焼室 |
JP2002038956A (ja) * | 2000-07-24 | 2002-02-06 | Nissan Motor Co Ltd | 直噴火花点火式内燃機関のピストン |
JP2016118169A (ja) * | 2014-12-22 | 2016-06-30 | マツダ株式会社 | 直噴エンジンの燃焼室構造 |
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2017
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-
2018
- 2018-02-27 US US16/493,567 patent/US10968817B2/en active Active
- 2018-02-27 CN CN201880019093.9A patent/CN110446834B/zh not_active Expired - Fee Related
- 2018-02-27 WO PCT/JP2018/007278 patent/WO2018180129A1/ja unknown
- 2018-02-27 EP EP18774264.8A patent/EP3584420A4/en not_active Withdrawn
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JP2016118169A (ja) * | 2014-12-22 | 2016-06-30 | マツダ株式会社 | 直噴エンジンの燃焼室構造 |
Also Published As
Publication number | Publication date |
---|---|
EP3584420A4 (en) | 2020-03-25 |
EP3584420A1 (en) | 2019-12-25 |
WO2018180129A1 (ja) | 2018-10-04 |
CN110446834A (zh) | 2019-11-12 |
JP6515941B2 (ja) | 2019-05-22 |
CN110446834B (zh) | 2021-07-30 |
US10968817B2 (en) | 2021-04-06 |
US20200131978A1 (en) | 2020-04-30 |
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