JP6674226B2 - 内燃機関を運転するための方法及び制御装置 - Google Patents
内燃機関を運転するための方法及び制御装置 Download PDFInfo
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
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- Exhaust Gas After Treatment (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
C10H22 + 15.5O2 → 10CO2 + 11H2O
C10H22 + 31NO → 15.5N2 + 10CO2 + 11H2O
ΔT=mC×MABGAS×αABGAS×HUC/ΔtAUF
式中、mCは触媒コンバータ13内の炭素質量であり、MABGASは触媒コンバータ13を通る排ガス質量流量であり、αABGASは排ガス熱容量であり、HUCは炭素の発熱量であり、ΔtAUFは触媒コンバータ13の昇温期間である。
11 シリンダー
12 排ガス後処理システム
13 触媒コンバータ
14、14’ 排ガス
15 NOxセンサー
16 ラムダセンサー
17 NOxセンサー
18 ラムダセンサー
Claims (6)
- 排ガス後処理システムを備える内燃機関を運転するための方法であって、前記排ガス後処理システムは炭化水素の酸化活性を有する触媒コンバータを備え、
炭化水素の酸化活性を有する前記触媒コンバータの下流の排ガス中の酸素量及び/または窒素酸化物量が、少なくとも一つのセンサーを用いた測定によって決定され、
炭化水素の酸化活性を有する前記触媒コンバータの上流の排ガス中の酸素量及び/または窒素酸化物量が、センサーを用いた測定によって、または代替的に計算によって決定され、
前記触媒コンバータの上流の前記排ガス中の前記酸素量と前記触媒コンバータの下流の前記排ガス中の前記酸素量との酸素量の差、及び/または、前記触媒コンバータの上流の前記排ガス中の前記窒素酸化物量と前記触媒コンバータの下流の前記排ガス中の前記窒素酸化物量との窒素酸化物量の差が決定され、
前記酸素量の差及び/または前記窒素酸化物量の差から少なくとも一つの特性変数が決定され、その関数として、炭化水素の酸化活性を有する前記触媒コンバータの損傷が回避されるように前記内燃機関が運転され、
前記特性変数が下限値よりも小さい場合に前記内燃機関の運転はこの特性変数に依存して変化せず、各特性変数が前記下限値よりも大きく上限値よりも小さい場合に前記内燃機関の運転はこの特性変数に依存して第一の挙動で変化し、各特性変数が前記上限値よりも大きい場合に前記内燃機関の運転はこの特性変数に依存して第二の挙動で変化することを特徴とする方法。 - 特性変数としての前記酸素量の差及び/または前記窒素酸化物量の差から、前記触媒コンバータの炭化水素負荷、及び/または前記炭化水素の酸化中に生じる前記触媒コンバータの温度上昇、及び/または前記炭化水素の焼失レートが決定されることを特徴とする、請求項1に記載の方法。
- 特に前記各特性変数が前記下限値よりも大きく、かつ前記上限値よりも小さい場合に燃料噴射量が削減され、特に前記各特性変数が前記上限値よりも大きい場合に燃焼用空気量及び優先的に燃料噴射量が追加的に削減されることを特徴とする、請求項1又は2に記載の方法。
- 少なくとも前記触媒コンバータの下流の前記排ガス中の前記窒素酸化物量がNOxセンサーを用いた測定によって決定され、前記触媒コンバータの上流の前記排ガス中の前記窒素酸化物量は更なるNOxセンサーを用いた測定または計算によって決定されることを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 追加的に、前記触媒コンバータの下流の前記排ガス中の前記酸素量がラムダセンサーを用いた測定によって決定され、前記触媒コンバータの上流の前記排ガス中の前記酸素量が更なるラムダセンサー若しくは空気質量センサーを用いた測定または計算によって決定されることを特徴とする、請求項4に記載の方法。
- 排ガス後処理システムを備える内燃機関を運転するための制御装置であって、請求項1から5のいずれか一項に記載の方法を実行するための手段を備えていることを特徴とする制御装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102014016447.0 | 2014-11-06 | ||
DE102014016447.0A DE102014016447B4 (de) | 2014-11-06 | 2014-11-06 | Verfahren und Steuerungseinrichtung zum Betreiben einer Brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
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JP2016089834A JP2016089834A (ja) | 2016-05-23 |
JP6674226B2 true JP6674226B2 (ja) | 2020-04-01 |
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JP4103428B2 (ja) * | 2002-04-05 | 2008-06-18 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置及びその劣化判定方法 |
JP2004108320A (ja) * | 2002-09-20 | 2004-04-08 | Isuzu Motors Ltd | 排気ガス浄化方法及びそのシステム |
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JP2007040130A (ja) * | 2005-08-01 | 2007-02-15 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2007092662A (ja) | 2005-09-29 | 2007-04-12 | Mazda Motor Corp | エンジンの排気浄化装置 |
JP4371114B2 (ja) * | 2006-02-28 | 2009-11-25 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE102009007764A1 (de) | 2009-02-06 | 2010-08-12 | Daimler Ag | Verfahren zum Betreiben einer Brennkraftmaschine mit einer Abgasreinigungsanlage |
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EP2884068B1 (en) * | 2012-08-08 | 2017-11-01 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification apparatus for an internal combustion engine |
JP6051850B2 (ja) * | 2012-12-26 | 2016-12-27 | 日産自動車株式会社 | ディーゼルエンジンの排気後処理装置 |
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CN105604662A (zh) | 2016-05-25 |
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DE102014016447B4 (de) | 2023-05-11 |
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