JP2006194249A - 内燃機関の運転方法および装置 - Google Patents
内燃機関の運転方法および装置 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—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
- F01N3/023—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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/05—Systems for adding substances into exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
- F01N2900/1806—Properties of reducing agent or dosing system
- F01N2900/1808—Pressure
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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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
【解決手段】内燃機関(10)の排気領域(13)内に排気ガス処理装置(15)が配置され、反応剤が内燃機関(10)排気領域(13)内に注入される、内燃機関(10)の運転方法において、反応剤締切弁(ReaCV)と直接排気領域(13)内に配置されている反応剤配量弁(ReaDV)との間に発生する反応剤圧力(pRea)が反応剤締切弁(ReaCV)および/または反応剤配量弁(ReaDV)の異なる状態の間に測定され且つ少なくとも1つのしきい値(pU、pabg、dpReaCV、pQRea、dpRea/dt)と比較される。しきい値を超えたとき、エラー信号(F)が提供される。
【選択図】 図1
Description
制御装置は、特に、診断制御と、しきい値設定と、並びに反応剤圧力を少なくとも1つのしきい値と比較するための比較器とを含む。
本発明による方法の他の有利な変更態様および形態が他の従属請求項および以下の説明から得られる。
制御装置20は、燃料配量装置21に燃料信号mKを供給する。
比較器31にしきい値設定手段32が付属され、しきい値設定手段32は診断制御手段33からしきい値設定信号34により操作される。しきい値として、周囲空気圧力pU、排気圧力pabg、反応剤締切弁ReaCVの圧力降下dpReaCV、反応剤供給源圧力pQRea並びに圧力勾配dpRea/dtが供給される。
制御装置20は、回転速度n、燃料信号mK並びに排気温度Tabgの関数として計算排気圧力pabgmを決定するためのモデル40を含む。
内燃機関10の排気ガスは、例えば窒素酸化物およびすすのような好ましくない成分を含む。排気ガス処理装置15は、好ましくない成分をできるだけ低減させるという課題を有している。排気ガス処理装置15の一部である第1の排気ガス処理装置16は、例えば被酸化性排気ガス成分をできるだけ酸化する酸化触媒である。代替態様または追加態様として、同様に排気ガス処理装置15の一部である第2の排気ガス処理装置17が設けられていてもよい。第2の排気ガス処理装置17は、例えば粒子フィルタおよび/または触媒好ましくはNOx吸蔵触媒またはSCR触媒である。
必要とされる反応剤供給源圧力pQReaは反応剤ポンプ23から提供される。反応剤供給源圧力pQReaは内燃機関の低圧燃料システムから提供されてもよく、低圧燃料システムは燃料ポンプを含み、燃料ポンプは、例えば燃料タンク内に配置されている。
11 吸気領域
12 吸気測定手段
13 排気領域
14 排気圧力センサ
15、16、17 排気ガス処理装置
20 制御装置
21 燃料配量装置
22 反応剤通路
23 反応剤ポンプ
24 反応剤ポンプ操作信号
25 反応剤配量制御手段
26 反応剤締切弁操作信号
27 反応剤配量弁操作信号
30 反応剤圧力センサ
31 比較器
32 しきい値設定手段
33 診断制御手段
34 しきい値設定信号
35 診断信号
36 配量信号
40 モデル
D 所定の流量
dpReaCV 圧力降下
dpRea/dt 圧力勾配
F エラー信号
mK 燃料信号
msL 空気信号
n 回転速度
pabg 排気圧力
pabgm 計算排気圧力
pQRea 反応剤供給源圧力
pRea 反応剤圧力
pU 周囲空気圧力
ReaCV 反応剤締切弁
ReaDV 反応剤配量弁
t 時間
t1−t7 時点
Tabg 排気温度
Claims (10)
- 内燃機関(10)の排気領域(13)内に排気ガス処理装置(15)が配置されている、内燃機関(10)の運転方法において、
反応剤が排気ガス処理装置(15)手前上流側の排気領域(13)内に注入され、所定の反応剤供給源圧力(pQRea)に昇圧された反応剤の流れ方向に、はじめに切換操作反応剤締切弁(ReaCV)が、およびその後方に連続操作反応剤配量弁(ReaDV)が配置され、この場合、反応剤配量弁(ReaDV)は排気領域(13)内に配置され且つ反応剤を直接排気領域(13)内に噴霧し、反応剤締切弁(ReaCV)と反応剤配量弁(ReaDV)との間に存在する反応剤通路(22)内において反応剤圧力(pRea)が測定され、反応剤締切弁(ReaCV)および/または反応剤配量弁(ReaDV)の少なくとも1つの所定の状態において測定された反応剤圧力(pRea)が少なくとも1つのしきい値(pU、pabg、dpReaCV、pQRea、dpRea/dt)と比較され、およびしきい値を超えたとき、エラー信号(F)が提供される、内燃機関の運転方法。 - 反応剤締切弁(ReaCV)が閉鎖され且つ反応剤配量弁(ReaDV)が閉鎖されているときに、反応剤圧力(pRea)が少なくとも排気圧力(pabg)を有しているかどうかが検査される請求項1に記載の運転方法。
- 反応剤締切弁(ReaCV)が閉鎖され且つ反応剤配量弁(ReaDV)が閉鎖されているときに、反応剤圧力(pRea)が反応剤供給源圧力(pQRea)よりも反応剤締切弁(ReaCV)における圧力降下(dpReaCV)だけ低下されて下方に存在するかどうかが検査される請求項1に記載の運転方法。
- それに続いて反応剤締切弁(ReaCV)が開放されたのちに、反応剤圧力(pRea)が少なくとも近似的に反応剤供給源圧力(pQRea)に対応しているかどうかが検査される請求項2または3に記載の運転方法。
- それに続いて反応剤締切弁(ReaCV)が閉鎖されおよびそれに続いて反応剤配量弁(ReaDV)が開放されたのちに、反応剤圧力(pRea)が少なくとも排気圧力(pabg)を有しているかどうかが検査される請求項4に記載の運転方法。
- 反応剤締切弁(ReaCV)および反応剤配量弁(ReaDV)が同時に開放されたときに、反応剤圧力(pRea)が反応剤供給源圧力(pQRea)よりも反応剤締切弁(ReaCV)における圧力降下(dpReaCV)だけ低下されて僅か下方に存在するかどうかが検査される請求項1に記載の運転方法。
- それに続いて反応剤締切弁(ReaCV)が閉鎖されおよびそれに続いて反応剤配量弁(ReaDV)が閉鎖されたのちに、反応剤圧力(pRea)が排気圧力(pabg)よりも上方に且つ反応剤供給源圧力(pQRea)よりも反応剤締切弁(ReaCV)における圧力降下(dpReaCV)だけ低下されて下方に存在するかどうかが検査される請求項6に記載の運転方法。
- 発生した反応剤圧力降下が所定の圧力勾配(dpRea/dt)を超えていないかどうかが検査される請求項7に記載の運転方法。
- 請求項1ないし8のいずれかに記載の運転方法を実施するために提供された少なくとも1つの制御装置(20)が設けられている、内燃機関の運転装置。
- 制御装置(20)が、診断制御(33)と、しきい値設定(32)と、並びに反応剤圧力(pRea)を少なくとも1つのしきい値(pU、pabg、dpReaCV、pQRea、dpRea/dt)と比較するための比較器(31)とを含む請求項9に記載の運転装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005001119.5A DE102005001119B4 (de) | 2005-01-10 | 2005-01-10 | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102005001119.5 | 2005-01-10 |
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JP2006194249A true JP2006194249A (ja) | 2006-07-27 |
JP4976694B2 JP4976694B2 (ja) | 2012-07-18 |
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US (1) | US7665295B2 (ja) |
JP (1) | JP4976694B2 (ja) |
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JP2020033919A (ja) * | 2018-08-29 | 2020-03-05 | 株式会社豊田自動織機 | 排気処理装置 |
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DE102006013293B4 (de) * | 2006-03-23 | 2016-08-18 | Robert Bosch Gmbh | Verfahren zur Diagnose einer Abgasnachbehandlungsvorrichtung und Vorrichtung zur Durchführung des Verfahrens |
EP2147202B1 (en) | 2007-04-19 | 2012-02-01 | Volvo Lastvagnar AB | Method and arrangement for monitoring of injector |
FR2920031A1 (fr) * | 2007-08-14 | 2009-02-20 | Peugeot Citroen Automobiles Sa | Perfectionnement aux circuits d'injection de carburant dans le conduit d'echappement d'un moteur de vehicule automobile fonctionnant en melange pauvre |
US7971426B2 (en) * | 2007-11-01 | 2011-07-05 | Ford Global Technologies, Llc | Reductant injection system diagnostics |
DE102008005988B4 (de) | 2008-01-24 | 2017-05-11 | Robert Bosch Gmbh | Verfahren zur Diagnose einer Abgasnachbehandlungsvorrichtung und Vorrichtung zur Durchführung des Verfahrens |
DE102008005989B4 (de) | 2008-01-24 | 2017-05-18 | Robert Bosch Gmbh | Verfahren zur Diagnose eines Dosierventils einer Abgasbehandlungsvorrichtung und Vorrichtung zur Durchführung des Verfahrens |
DE102008002490A1 (de) * | 2008-06-18 | 2009-12-24 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Druckbestimmung |
DE102008002508A1 (de) * | 2008-06-18 | 2009-12-24 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Reagenzmittel-Dosiereinrichtung und Vorrichtung zur Durchführung des Verfahrens |
JP4557063B2 (ja) | 2008-07-18 | 2010-10-06 | 株式会社デンソー | パティキュレートフィルタ再生装置及びその駆動方法 |
DE102008041612B4 (de) * | 2008-08-27 | 2023-08-17 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung einer Dosiereinrichtung |
DE102009029517A1 (de) * | 2009-09-16 | 2011-03-24 | Robert Bosch Gmbh | Anordnung und Verfahren zum Betreiben einer Abgasnachbehandlungsvorrichtung |
FR2965856B1 (fr) * | 2010-10-12 | 2017-03-24 | Peugeot Citroen Automobiles Sa | Procede de controle du fonctionnement d'un systeme de post-traitement des gaz d'echappement d'un moteur et vehicule adapte pour la mise en œuvre du procede |
DE102011076955B4 (de) | 2011-06-06 | 2013-05-23 | Robert Bosch Gmbh | Verfahren zur Diagnose eines Dosiersystems und Vorrichtung zur Durchführung des Verfahrens |
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DE102012206430B4 (de) | 2012-04-19 | 2015-10-08 | Robert Bosch Gmbh | Verfahren zur Diagnose eines Dosierventils und Vorrichtung zur Durchführung des Verfahrens |
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DE102005001119A1 (de) | 2006-07-20 |
US20060168941A1 (en) | 2006-08-03 |
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JP4976694B2 (ja) | 2012-07-18 |
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