JP2005146893A - 内燃機関および内燃機関の制御方法 - Google Patents
内燃機関および内燃機関の制御方法 Download PDFInfo
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- JP2005146893A JP2005146893A JP2003381730A JP2003381730A JP2005146893A JP 2005146893 A JP2005146893 A JP 2005146893A JP 2003381730 A JP2003381730 A JP 2003381730A JP 2003381730 A JP2003381730 A JP 2003381730A JP 2005146893 A JP2005146893 A JP 2005146893A
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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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/025—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by changing the composition of the exhaust gas, e.g. for exothermic reaction on exhaust gas treating apparatus
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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
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
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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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
- F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
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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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0261—Controlling the valve overlap
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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
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/405—Multiple injections with post injections
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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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Supercharger (AREA)
Abstract
【課題】 内燃機関の触媒を早期かつ確実に活性化させて排気エミッションの低減化を良好に達成することを目的とする。
【解決手段】 ポート噴射用インジェクタ10pや筒内噴射用インジェクタ10cからの燃料と空気との混合気を燃焼室2内で燃焼させて動力を発生する内燃機関1は、吸気弁Viや排気弁Veの開弁特性を変化させることができる動弁機構8と、燃焼室2に吸入される空気を過給する過給機20と、過給機20による過給圧を変化させるためのターボ用電動機24と、燃焼室2からの排気ガスを浄化するための触媒を含む触媒装置17と、触媒が活性化されたと判断されるまで、燃焼室2への吸入空気の圧力が背圧よりも大きくなるようにターボ用電動機24を制御すると共に、吸気弁Viおよび排気弁Veのバルブオーバーラップを設定するECU50とを備える。
【選択図】 図1
Description
図1は、本発明による内燃機関を示す概略構成図である。同図に示される内燃機関1は、車両用の多気筒内燃機関(例えば、4気筒内燃機関、ただし、図1には1気筒のみが示される。)として構成されており、各燃焼室2内での混合気の燃焼によりピストン3を往復移動させて、クランクシャフトSから動力を得るものである。なお、ここでは、内燃機関1は、いわゆるガソリンエンジンとして説明されるが、これに限られるものではなく、本発明がディーゼルエンジンにも適用され得ることはいうまでもない。
2 燃焼室
4 吸気ポート
5 排気ポート
6 吸気管
7 排気管
8 動弁機構
10p ポート噴射用インジェクタ
10c 筒内噴射用インジェクタ
15 スロットルバルブ
16 圧力センサ
17 触媒装置
18 温度センサ
19 クランク角センサ
20 過給機
21 タービンインペラ
22 圧縮機インペラ
23 回転軸
24 ターボ用電動機
25 インバータユニット
Ve 排気弁
Vi 吸気弁
Claims (9)
- 吸気弁によって開閉される吸気ポートと排気弁によって開閉される排気ポートとに連なる燃焼室内で、燃料噴射手段からの燃料と空気との混合気を燃焼させて動力を発生する内燃機関において、
前記吸気弁および前記排気弁の少なくとも何れか一方の開弁特性を変化させるための開弁特性設定手段と、
前記燃焼室に吸入される空気を過給するための過給機と、
前記過給機による過給圧を変化させるための過給圧設定手段と、
前記燃焼室からの排気ガスを浄化するための触媒と、
前記触媒が活性化されたと判断されるまで、前記燃焼室に吸入される空気の圧力が背圧よりも大きくなるように前記過給圧設定手段を制御すると共に、前記吸気弁および前記排気弁のバルブオーバーラップを設定する制御手段とを備えることを特徴とする内燃機関。 - 前記過給機は、前記過給圧設定手段として、圧縮機要素を回転駆動する電動機を備えることを特徴とする請求項1に記載の内燃機関。
- 前記燃料噴射手段は、前記燃焼室内に燃料を直接噴射する筒内噴射用インジェクタであることを特徴とする請求項1または2に記載の内燃機関。
- 前記制御手段は、前記触媒が活性化されたと判断されるまで、排気行程中にも前記筒内噴射用インジェクタから燃料を噴射させることを特徴とする請求項3に記載の内燃機関。
- 前記燃料噴射手段は、前記吸気ポート内に燃料を噴射するポート噴射用インジェクタであることを特徴とする請求項1または2に記載の内燃機関。
- 前記制御手段は、前記触媒が活性化されたと判断されるまで、前記吸気ポートにおける混合気の空燃比をリーンに設定することを特徴とする請求項5に記載の内燃機関。
- 前記燃料噴射手段として、前記吸気ポート内に燃料を噴射するポート噴射用インジェクタと、前記燃焼室内に燃料を直接噴射する筒内噴射用インジェクタとを備え、前記制御手段は、前記触媒が活性化されたと判断されるまで、前記吸気ポートにおける混合気の空燃比がリーンになるように前記ポート噴射用インジェクタから燃料を噴射させると共に、前記筒内噴射用インジェクタから燃料を噴射させることを特徴とする請求項1または2に記載の内燃機関。
- 前記制御手段は、前記触媒が活性化されたと判断されるまで、排気行程中にも前記筒内噴射用インジェクタから燃料を噴射させることを特徴とする請求項7に記載の内燃機関。
- 吸気弁によって開閉される吸気ポートと排気弁によって開閉される排気ポートとに連なる燃焼室と、前記吸気弁および前記排気弁の少なくとも何れか一方の開弁特性を変化させるための開弁特性設定手段と、過給圧を変化させることができる過給機と、前記燃焼室からの排気ガスを浄化するための触媒とを備え、燃料噴射手段からの燃料と空気との混合気を前記燃焼室内で燃焼させて動力を発生する内燃機関の制御方法において、
前記触媒が活性化されたと判断されるまで、前記過給機によって過給されて前記燃焼室に吸入される空気の圧力を背圧よりも大きく設定すると共に、前記吸気弁および前記排気弁のバルブオーバーラップを設定することを特徴とする内燃機関の制御方法。
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JP2003381730A JP4033110B2 (ja) | 2003-11-11 | 2003-11-11 | 内燃機関および内燃機関の制御方法 |
US10/976,989 US7178327B2 (en) | 2003-11-11 | 2004-11-01 | Internal combustion engine and control method thereof |
EP04026743A EP1531249A3 (en) | 2003-11-11 | 2004-11-10 | Internal combustion engine and control method thereof |
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JP2003381730A JP4033110B2 (ja) | 2003-11-11 | 2003-11-11 | 内燃機関および内燃機関の制御方法 |
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JP2005146893A true JP2005146893A (ja) | 2005-06-09 |
JP4033110B2 JP4033110B2 (ja) | 2008-01-16 |
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JP2010112296A (ja) * | 2008-11-07 | 2010-05-20 | Nissan Motor Co Ltd | エンジンの排気浄化装置 |
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Also Published As
Publication number | Publication date |
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US7178327B2 (en) | 2007-02-20 |
US20050097888A1 (en) | 2005-05-12 |
EP1531249A3 (en) | 2006-09-13 |
JP4033110B2 (ja) | 2008-01-16 |
EP1531249A2 (en) | 2005-05-18 |
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