JP2007239740A - 内燃機関の排気ガス領域に配置された粒子フィルタの作動方法及び装置 - Google Patents
内燃機関の排気ガス領域に配置された粒子フィルタの作動方法及び装置 Download PDFInfo
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- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
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Abstract
【解決手段】必要に応じて、堆積された粒子(m_P_Ist)から再生され、粒子フィルタ(17)が排気ガス温度(te_vDPF_Ist)に影響を与えることによる再生のために粒子フィルタ(17)の手前の上流側で加熱される、内燃機関(10)の排気ガス領域(13)に配置された粒子フィルタの作動方法において、粒子フィルタの手前の上流側の排気ガス温度(te_vDPF_Ist)が予め設定された排気ガス温度目標値(te_vDPF_Soll)に基づいて決定され、排気ガス温度目標値(te_vDPF_Soll)が再生の間の粒子フィルタの少なくとも一つの特性値(m_p_Ist、dm/dt、te_DPF、dte_DPF/dt、dte_DPF/dx)に依存している。
【選択図】図1
Description
とりわけ有利な一実施態様は、特性値モデルの中で特性値についての少なくとも一つの尺度(値)を求めることを提案している。この措置によって、再生の間に粒子フィルタの少なくとも一つの特性値を測定技術によって測定することを無用とすることができる。この特性値モデルは、特に粒子燃焼除去モデルであり、関与する反応相手の反応プロセス或いは反応速度が考慮される。
制御装置は、好ましくは少なくとも一つの電気メモリを含んでおり、このメモリにこの方法の諸ステップがコンピュータプログラムとして格納されている。
制御装置20は、燃料信号決定装置21を含んでおり、燃料信号決定装置21には空気信号ms_L、回転数n、トルク目標値Md_Sollが送り込まれ、燃料信号m_Kを作り出す。
第一の加算器23は、排気ガス温度目標値te_vDPF_Sollと排気ガス温度実際値te_vDPF_Istとから、温度差dteを算出する。
燃料信号決定装置21は、空気信号ms_L、回転数n、及びトルク目標値Md_Sollに応じて、燃料信号m_Kを求める。空気信号ms_Lは、内燃機関10によって吸引される空気についての尺度であり、その際エアマス或いは空気量が係わって来ることがある。トルク目標値Md_Sollは、内燃機関10が駆動エンジンとして用いられている詳しくは説明されない自動車の同じく詳しくは説明されないアクセルペダルの位置から導き出される。燃料信号m_Kは、燃料配分装置19へ送られ、燃料配分装置19は、定められた燃料量を定められた時点に内燃機関10の個々のシリンダに配分する。
粒子フィルタ17の手前の上流側の排気ガス温度目標値te_vDPF_Sollは、排気ガス温度目標値決定装置26によって、再生の間に粒子フィルタ17の少なくとも一つの特性値に応じて決定される。図示されている実施例では、上記の特性値として、粒子負荷尺度m_p_Istについての少なくとも一つの尺度、及び/又は粒子質量変化速度dm/dtについての少なくとも一つの尺度、及び/又は粒子フィルタ温度te_DPFについての少なくとも一つの尺度、及び/又は粒子フィルタ温度変化速度dte_DPF/dtについての少なくとも一つの尺度、及び/又は粒子フィルタ温度勾配dte_DPF/dxについての少なくとも一つの尺度が考えられている。
11…吸気領域
12…空気量測定装置
13…排気ガス領域
14…反応剤注入装置
15…触媒
16…第一の温度センサ
17…粒子フィルタ
18…第二の温度センサ
19…燃料配分装置
20…制御装置
21…燃料信号決定装置
22…温度調節器
23…第一の加算器
24…特性値モデル
25…負荷状態測定装置
26…排気ガス温度目標値決定装置
27…第二の加算器
dm/dt…粒子変化速度
dte…温度差
dte_DPF/dt…粒子フィルタ温度変化速度
dte_DPF/dx…粒子フィルタ温度勾配
HC_I…反応剤信号
Korr…修正値
lam…酸素濃度
Md_Soll…トルク目標値
m_K…燃料信号
m_p_Ist…粒子負荷尺度
m_P_Start…粒子スタート値
ms_abg…排気ガス流
ms_L…空気信号
n…回転数
Po_I…燃料後噴射信号
te_DPF…粒子フィルタ温度
te_vDPF_Ist…排気ガス温度実際値
te_DPF_mess…第二の排気ガス温度測定値
te_vDPF_mess…第一の排気ガス温度測定値
te_vDPF_Soll…排気ガス温度目標値
Claims (10)
- 必要に応じて、堆積された粒子(m_P_Ist)から再生され、粒子フィルタ(17)が排気ガス温度(te_vDPF_Ist)に影響を与えることによる再生のために粒子フィルタ(17)の手前の上流側で加熱される、内燃機関(10)の排気ガス領域(13)に配置された粒子フィルタ(17)の作動方法において、
粒子フィルタ(17)の手前の上流側の排気ガス温度(te_vDPF_Ist)が予め設定された排気ガス温度目標値(te_vDPF_Soll)に基づいて決定されること、及び
排気ガス温度目標値(te_vDPF_Soll)が再生の間の粒子フィルタ(17)の少なくとも一つの特性値(m_p_Ist、dm/dt、te_DPF、dte_DPF/dt、dte_DPF/dx)に依存していること、
を特徴とする内燃機関の排気ガス領域に配置された粒子フィルタの作動方法。 - 特性値(m_p_Ist、dm/dt、te_DPF、dte_DPF/dt、dte_DPF/dx)として、堆積されている粒子質量(m_p_Ist)についての尺度及び粒子変化速度(dm/dt)についての尺度の少なくともいずれかが考えられることを特徴とする請求項1に記載の作動方法。
- 特性値(m_p_Ist、dm/dt、te_DPF、dte_DPF/dt、dte_DPF/dx)として、粒子フィルタ温度(te_DPF)についての尺度、粒子フィルタ温度変化速度(dte_DPF/dt)についての尺度、及び粒子フィルタ温度勾配(dte_DPF/dx)についての尺度の少なくともいずれかが考えられることを特徴とする請求項1に記載の作動方法。
- 排気ガス温度目標値(te_vDPF_Soll)が、内燃機関(10)への少なくとも一回の燃料後噴射、及び内燃機関(10)の排気ガス領域内への反応剤の注入の少なくともいずれかによって影響を与えられることを特徴とする請求項1に記載の作動方法。
- 粒子フィルタ(17)の手前の上流側で排気ガス実際温度(te_vDPF_Ist)が測定され、制御が予め設定された排気ガス温度目標値(te_vDPF_Soll)に基づいて行われることを特徴とする請求項1に記載の作動方法。
- 特性値(m_p_Ist、dm/dt、te_DPF、dte_DPF/dt、dte_DPF/dx)についての尺度が、特性値モデル(24)で求められることを特徴とする請求項1に記載の作動方法。
- 特性値モデル(24)が、粒子フィルタ(17)の手前の上流側の排気ガス温度実際値(te_vDPF_Ist)についての尺度、排気ガス流(ms_abg)についての尺度、及び排気ガス中の酸素濃度(lam)についての尺度の少なくともいずれかを考慮していることを特徴とする請求項6に記載の作動方法。
- 特性値モデル(24)から求められた粒子フィルタ温度(te_DPF)についての尺度と、測定された粒子フィルタ温度(te_DPF_mess)との比較から、特性値モデル(24)の修正のための修正値(Korr)が求められることを特徴とする請求項6に記載の作動方法。
- 内燃機関(10)の排気ガス領域(13)に配置された粒子フィルタ(17)の作動装置において、請求項1ないし8のいずれかに記載の作動方法を実施するための少なくとも一つの制御装置(20)を備えたことを特徴とする作動装置。
- 排気ガス温度実際値(te_vDPF_Ist)を測定するための温度センサ(16)を、粒子フィルタ(17)の手前の上流側に備えたことを特徴とする請求項10に記載の作動装置。
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JP2012265182A Active JP5698725B2 (ja) | 2006-03-03 | 2012-12-04 | 内燃機関の排気ガス領域に配置された粒子フィルタの作動方法及び装置 |
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US (1) | US7775039B2 (ja) |
JP (2) | JP2007239740A (ja) |
DE (1) | DE102006009921B4 (ja) |
FR (1) | FR2898153B1 (ja) |
IT (1) | ITMI20070417A1 (ja) |
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WO2011099366A1 (ja) | 2010-02-09 | 2011-08-18 | 三菱重工業株式会社 | エンジンの排気浄化装置及び方法、並びにエンジンの排気浄化装置に係るフィルタの再生システム |
WO2012053279A1 (ja) | 2010-10-20 | 2012-04-26 | 三菱重工業株式会社 | ディーゼルエンジンの排気浄化装置 |
KR101467657B1 (ko) * | 2010-10-27 | 2014-12-01 | 미츠비시 쥬고교 가부시키가이샤 | 디젤 엔진의 배기 정화 장치 |
JP2018193863A (ja) * | 2017-05-12 | 2018-12-06 | いすゞ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2018193861A (ja) * | 2017-05-12 | 2018-12-06 | いすゞ自動車株式会社 | 内燃機関の排気浄化装置 |
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DE102008002490A1 (de) | 2008-06-18 | 2009-12-24 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Druckbestimmung |
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JP5227149B2 (ja) * | 2008-12-03 | 2013-07-03 | 富士重工業株式会社 | エンジンの排気浄化装置 |
FR2942501B1 (fr) * | 2009-02-20 | 2015-12-18 | Renault Sas | Dispositif et procede de pilotage d'une montee en temperature d'un filtre a particules de vehicule automobile. |
FR2964147B1 (fr) | 2010-08-31 | 2012-09-28 | Peugeot Citroen Automobiles Sa | Procede de determination de l'etat physique d'un filtre a particules |
US9046016B2 (en) | 2012-11-08 | 2015-06-02 | GM Global Technology Operations LLC | System and method for particulate filter regeneration |
US9080483B2 (en) | 2012-11-08 | 2015-07-14 | GM Global Technology Operations LLC | System and method for particulate filter regeneration |
KR20150071156A (ko) * | 2013-12-18 | 2015-06-26 | 현대자동차주식회사 | 배기정화장치의 재생 제어방법 및 장치 |
FR3020411B1 (fr) * | 2014-04-29 | 2016-05-06 | Peugeot Citroen Automobiles Sa | Procede de regeneration d'un filtre a particules impregne par paliers de temperature |
FR3026431B1 (fr) * | 2014-09-29 | 2016-11-18 | Peugeot Citroen Automobiles Sa | Procede de recalage de l'estimation de particules de suie dans un filtre a particules d'un vehicule automobile |
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Also Published As
Publication number | Publication date |
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JP2013092151A (ja) | 2013-05-16 |
JP5698725B2 (ja) | 2015-04-08 |
DE102006009921B4 (de) | 2022-03-03 |
ITMI20070417A1 (it) | 2007-09-04 |
DE102006009921A1 (de) | 2007-09-06 |
FR2898153B1 (fr) | 2016-01-08 |
US20070261392A1 (en) | 2007-11-15 |
US7775039B2 (en) | 2010-08-17 |
FR2898153A1 (fr) | 2007-09-07 |
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