JP4757112B2 - 燃料直噴ディーゼルエンジン - Google Patents
燃料直噴ディーゼルエンジン Download PDFInfo
- Publication number
- JP4757112B2 JP4757112B2 JP2006175597A JP2006175597A JP4757112B2 JP 4757112 B2 JP4757112 B2 JP 4757112B2 JP 2006175597 A JP2006175597 A JP 2006175597A JP 2006175597 A JP2006175597 A JP 2006175597A JP 4757112 B2 JP4757112 B2 JP 4757112B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- cavity
- fuel
- piston
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- F02B23/02—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
-
- 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
- F02B23/0654—Thermal treatments, e.g. with heating elements or local cooling
- F02B23/0657—Thermal treatments, e.g. with heating elements or local cooling the spray interacting with one or more glow plugs
-
- 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
- F02B23/0669—Details related to the fuel injector or the fuel spray having multiple fuel spray jets per injector nozzle
-
- 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
- F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
-
- 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
- F02B2275/14—Direct injection into 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02F2001/241—Cylinder heads specially adapted to pent roof shape of the combustion chamber
-
- 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)
- Dispersion Chemistry (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
16 シリンダヘッド
23 フュエルインジェクタ
25 キャビティ
25c 底壁部
25d 頂部
Li1 燃料噴射軸
Li2 燃料噴射軸
Lp ピストン中心軸
Oinj 燃料噴射点
P1 燃料衝突点
P2 燃料衝突点
α1 燃料衝突角
α2 燃料衝突角
Claims (6)
- 頂面の高さが円周方向に変化するピストン(13)と、前記ピストン(13)の中央部に凹設されたキャビティ(25)内に、ピストン中心軸(Lp)上から円周方向に離間する複数の燃料噴射軸(Li1,Li2)に沿って燃料を噴射するフュエルインジェクタ(23)とを備えた燃料直噴ディーゼルエンジンにおいて、
n番目の燃料噴射軸(Li1,Li2)を通る前記キャビティ(25)の断面を燃料噴射断面Snとし、
前記燃料噴射断面Snと前記キャビティ(25)の開口周縁との交点を第1特定点Anとし、
前記第1特定点Anを通りかつ前記燃料噴射断面Snにおけるシリンダヘッド(16)の下面と平行な線上には第2特定点Bnが存在し、
前記燃料噴射断面Snにおける前記キャビティ(25)の底壁部(25c)上には第3特定点Cnが存在し、
前記第2特定点Bnは前記第1特定点Anよりもピストン中心軸(Lp)に近い位置にあり、
前記第3特定点Cnは前記キャビティ(25)の底壁部(25c)の最大外径位置よりもピストン中心軸(Lp)に近い位置にあり、
前記第1,2特定点An,Bnを前記燃料噴射断面Snにおける前記シリンダヘッド(16)の下面に沿う線で結ぶ経路AnBnと、前記第1、第3定点An,Cnを前記燃料噴射断面Snにおける前記キャビティ(25)の壁面に沿って結ぶ経路AnCnと、前記第2、第3特定点Bn,Cnを最短直線で結ぶ経路BnCnとで囲まれる断面形状が、各燃料噴射断面Snにおいて略等しいことを特徴とする燃料直噴ディーゼルエンジン。 - 前記燃料噴射断面Snは前記ピストン(13)の頂面に略直交することを特徴とする、請求項1に記載の燃料直噴ディーゼルエンジン。
- 前記キャビティ(25)の壁面の中央には該キャビティ(25)の開口に向けて隆起する頂部(25d)が形成され、前記頂部(25d)とその径方向外側に連なる前記底壁部(25c)との境界に前記第3特定点Cnが位置することを特徴とする、請求項1または請求項2に記載の燃料直噴ディーゼルエンジン。
- 前記キャビティ(25)の円周方向の任意の点と、ピストン中心軸(Lp)上に存在する前記フュエルインジェクタ(23)の燃料噴射点(Oinj)とを通り、かつ前記ピストン(13)の頂面に直交する前記キャビティ(25)の断面形状が、各燃料噴射断面Snにおける前記断面形状と略等しいことを特徴とする、請求項1〜請求項3の何れか1項に記載の燃料直噴ディーゼルエンジン。
- 前記複数の燃料噴射軸(Li1,Li2)が前記キャビティ(25)の壁面と交差する燃料衝突角(α1,α2)が等しいことを特徴とする、請求項1〜請求項4の何れか1項に記載の燃料直噴ディーゼルエンジン。
- 前記フュエルインジェクタ(23)の燃料噴射点(Oinj)から、前記複数の燃料噴射軸(Li1,Li2)が前記キャビティ(25)の壁面と交差する燃料衝突点(P1,P2)までの距離が等しいことを特徴とする、請求項1〜請求項5の何れか1項に記載の燃料直噴ディーゼルエンジン。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006175597A JP4757112B2 (ja) | 2006-06-26 | 2006-06-26 | 燃料直噴ディーゼルエンジン |
PCT/JP2007/057988 WO2008001534A1 (fr) | 2006-06-26 | 2007-04-11 | moteur diesel À injection de carburant directe |
CN200780022427XA CN101473121B (zh) | 2006-06-26 | 2007-04-11 | 燃料直喷柴油发动机 |
EP07741424A EP2034157B1 (en) | 2006-06-26 | 2007-04-11 | Direct fuel injection diesel engine |
US12/305,880 US7992536B2 (en) | 2006-06-26 | 2007-04-11 | Direct fuel injection diesel engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006175597A JP4757112B2 (ja) | 2006-06-26 | 2006-06-26 | 燃料直噴ディーゼルエンジン |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008002443A JP2008002443A (ja) | 2008-01-10 |
JP4757112B2 true JP4757112B2 (ja) | 2011-08-24 |
Family
ID=38845306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006175597A Expired - Fee Related JP4757112B2 (ja) | 2006-06-26 | 2006-06-26 | 燃料直噴ディーゼルエンジン |
Country Status (5)
Country | Link |
---|---|
US (1) | US7992536B2 (ja) |
EP (1) | EP2034157B1 (ja) |
JP (1) | JP4757112B2 (ja) |
CN (1) | CN101473121B (ja) |
WO (1) | WO2008001534A1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4767775B2 (ja) | 2006-07-04 | 2011-09-07 | 本田技研工業株式会社 | 燃料直噴ディーゼルエンジン |
ATE529618T1 (de) | 2007-04-06 | 2011-11-15 | Honda Motor Co Ltd | Direkteinspritzmotor |
JP4879873B2 (ja) | 2007-12-21 | 2012-02-22 | 本田技研工業株式会社 | 燃料直噴エンジン |
JP4922213B2 (ja) | 2008-03-11 | 2012-04-25 | 本田技研工業株式会社 | 燃料直噴エンジン |
EP2112348B1 (en) | 2008-04-23 | 2012-02-08 | Honda Motor Co., Ltd. | Direct fuel injection engine |
JP4732505B2 (ja) | 2008-04-23 | 2011-07-27 | 本田技研工業株式会社 | 燃料直噴エンジン |
DE102010032442B4 (de) * | 2010-07-28 | 2014-10-30 | Audi Ag | Selbstzündende Brennkraftmaschine mit Kolbenmulden mit Drallstufung |
DE102011116372A1 (de) * | 2011-10-14 | 2013-04-18 | Vladimir Borissovskiy | Brennraum eines Dieselmotors |
JP5564484B2 (ja) * | 2011-11-25 | 2014-07-30 | 本田技研工業株式会社 | 内燃機関 |
CN104903557B (zh) * | 2013-01-07 | 2017-05-31 | 丰田自动车株式会社 | 内燃机 |
JPWO2014106903A1 (ja) * | 2013-01-07 | 2017-01-19 | トヨタ自動車株式会社 | 内燃機関 |
CN104956043A (zh) * | 2013-01-31 | 2015-09-30 | 丰田自动车株式会社 | 内燃机 |
JP6432788B2 (ja) * | 2015-07-29 | 2018-12-05 | マツダ株式会社 | エンジンの燃焼室構造 |
GB2547265B (en) | 2016-02-12 | 2020-03-04 | Perkins Engines Co Ltd | Piston bowl for an internal combustion engine |
JP6485489B2 (ja) * | 2017-05-23 | 2019-03-20 | マツダ株式会社 | エンジンの制御装置及びエンジンの制御方法 |
JP6946944B2 (ja) * | 2017-11-01 | 2021-10-13 | スズキ株式会社 | 内燃機関の燃焼室構造 |
EP3864275A1 (en) * | 2018-10-08 | 2021-08-18 | Federal-Mogul Motorparts LLC | Detonation resistant piston |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62255520A (ja) * | 1986-04-30 | 1987-11-07 | Isuzu Motors Ltd | ペントル−フ形ピストン |
JPS62288311A (ja) * | 1986-06-05 | 1987-12-15 | Isuzu Motors Ltd | ペントル−フ形直噴式内燃機関 |
JPS6316124A (ja) * | 1986-07-07 | 1988-01-23 | Isuzu Motors Ltd | ペントル−フ形ピストン |
FR2834002B1 (fr) * | 2001-12-20 | 2004-04-16 | Renault | Moteur a combustion interne a allumage par compression |
JP4075453B2 (ja) | 2002-05-16 | 2008-04-16 | 日産自動車株式会社 | 直噴火花点火式内燃機関 |
US6739309B2 (en) * | 2002-06-04 | 2004-05-25 | Nissan Motor Co., Ltd. | Direct fuel injection internal combustion engine |
JP4075471B2 (ja) * | 2002-06-04 | 2008-04-16 | 日産自動車株式会社 | 筒内直接噴射式内燃機関 |
JP3953430B2 (ja) * | 2003-03-06 | 2007-08-08 | 本田技研工業株式会社 | 筒内噴射式内燃機関 |
JP2005155563A (ja) * | 2003-11-28 | 2005-06-16 | Nissan Motor Co Ltd | 筒内噴射式内燃機関 |
JP4851864B2 (ja) * | 2006-06-23 | 2012-01-11 | 本田技研工業株式会社 | 燃料直噴ディーゼルエンジン |
-
2006
- 2006-06-26 JP JP2006175597A patent/JP4757112B2/ja not_active Expired - Fee Related
-
2007
- 2007-04-11 EP EP07741424A patent/EP2034157B1/en not_active Not-in-force
- 2007-04-11 WO PCT/JP2007/057988 patent/WO2008001534A1/ja active Application Filing
- 2007-04-11 US US12/305,880 patent/US7992536B2/en not_active Expired - Fee Related
- 2007-04-11 CN CN200780022427XA patent/CN101473121B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008002443A (ja) | 2008-01-10 |
US7992536B2 (en) | 2011-08-09 |
US20100186709A1 (en) | 2010-07-29 |
EP2034157A4 (en) | 2009-08-19 |
CN101473121A (zh) | 2009-07-01 |
WO2008001534A1 (fr) | 2008-01-03 |
EP2034157A1 (en) | 2009-03-11 |
EP2034157B1 (en) | 2012-02-22 |
CN101473121B (zh) | 2010-11-03 |
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