CN100529340C - 修正吸附器再生的触发水平的方法 - Google Patents
修正吸附器再生的触发水平的方法 Download PDFInfo
- Publication number
- CN100529340C CN100529340C CNB2005800263858A CN200580026385A CN100529340C CN 100529340 C CN100529340 C CN 100529340C CN B2005800263858 A CNB2005800263858 A CN B2005800263858A CN 200580026385 A CN200580026385 A CN 200580026385A CN 100529340 C CN100529340 C CN 100529340C
- Authority
- CN
- China
- Prior art keywords
- adsorber
- numerical value
- catalyzer
- regeneration
- combustion engine
- 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
Links
- 230000008929 regeneration Effects 0.000 title claims abstract description 66
- 238000011069 regeneration method Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000001301 oxygen Substances 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 22
- 230000004044 response Effects 0.000 claims abstract description 3
- 239000000446 fuel Substances 0.000 claims description 82
- 238000002485 combustion reaction Methods 0.000 claims description 43
- 239000003638 chemical reducing agent Substances 0.000 claims description 34
- 238000012937 correction Methods 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000002912 waste gas Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000007850 degeneration Effects 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
-
- 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
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
-
- 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
-
- 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
- F01N2550/20—Monitoring artificially aged exhaust systems
-
- 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
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
-
- 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
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
-
- 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
- F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
-
- 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
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0402—Methods of control or diagnosing using adaptive learning
-
- 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
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1621—Catalyst conversion efficiency
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0806—NOx storage amount, i.e. amount of NOx stored on NOx trap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0811—NOx storage efficiency
-
- 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
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
- F02D41/028—Desulfurisation of NOx traps or adsorbent
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Separation Of Gases By Adsorption (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
本发明揭示了一种用于修正NOx吸附器(23)再生触发变量的方法。监测内燃机(20)工作状况,直到再生触发变量得到满足。该吸附器(23)被再生,且该吸附器的吸附效率随后被确定。修正再生触发变量以对应于吸附器效率的降低。可以使用根据经验的预定数值组或者通过使用一对氧气传感器(27,28)以确定传感器(27,28)上的氧气响应延迟,由此确定吸附器(23)效率。
Description
相关申请的交叉引用
本申请主张申请日为2004年6月8日题为METHOD FOR MODIFYINGTRIGGER LEVEL FOR ADSORBER REGENERATION的美国临时专利申请No.60/578,015的权益。该临时专利申请通过参考在此引入。
有关联邦政府赞助研究或开发的声明
美国政府依据美国能源部授予的合同No.DE-FC05-97OR22533而享有本发明的特定权利。
背景
本发明通常涉及氮氧化合物(NOx)吸附器催化剂的再生。更具体地,本发明涉及通过基于内燃机工作状况而调整再生触发变量,由此控制NOx吸附器再生周期频率的方法。
对于环境的关注导致政府部门对内燃机排放进行越来越严格的规定。为了满足政府规定,减小内燃机尾气排放中的NOx变得越来越重要。政府规定将变得更严格的趋势将进一步继续,这是大家广泛的共识。
传统的气缸内排放降低技术例如废气再循环和喷油速率调节(injection rate shaping)本身无法获得期望的低排放水平。科学家和工程师意识到必须采用后处理技术,并必须进一步研发后处理技术以满足柴油机将来的低排放要求。使用催化技术可以消除机动车辆中的NOx,其中该催化技术使用还原剂如下方程所示将NOx物质转换为双原子氮气(N2):
使用NOx吸附器催化剂除去NOx要求向催化剂提供碳氢化合物还原剂以转换NOx。通常,使用车载燃料(例如柴油燃料)作为还原剂。将燃料注入废气流中,在催化剂上与NOx反应。
因此需要用于内燃机的排放控制系统的进一步的技术改进。本发明旨在满足这一需求。
发明内容
本发明一方面提供了一种方法,包括:操作包括后处理系统的内燃机,该后处理系统具有NOx吸附器催化剂,该内燃机包括用于触发该NOx吸附器催化剂再生的内燃机工作状况阈值数值;确定该NOx吸附器催化剂的变化;以及基于所述确定动作而调整该内燃机工作状况阈值数值,以触发该NOx吸附器催化剂的再生。
本发明另一方面提供了一种方法,包括:操作包括后处理系统的柴油机,该后处理系统具有NOx吸附器催化剂;基于燃料消耗阈值数值触发NOx吸附器催化剂再生周期;确定在经过多个该NOx吸附器催化剂再生周期之后该NOx吸附器催化剂效率的减小;以及响应于所述确定动作修正该燃料消耗阈值数值。
本发明又一方面提供了一种系统,包括:消耗燃料并产生废气的柴油机;NOx吸附器,与该废气流体连通,用于吸附至少部分该废气;第一数值,用于触发所述NOx吸附器的第一再生周期;控制系统,用于确定所述NOx吸附器的吸附效率的降低并输出第二数值,该第二数值与所述NOx吸附器的吸附效率的降低相对应;以及控制器,基于所述第一数值和所述第二数值计算第三数值,所述第三数值触发所述NOx吸附器的第二再生周期,其中在每个所述再生周期内,还原剂被传送到所述NOx吸附器。
本发明再一方面提供了一种方法,包括:操作包括内燃机的车辆,该内燃机包括具有吸附器催化剂的后处理系统;确定该内燃机负载是否大于第一阈值;确定该内燃机是否参与攻击性驾驶(aggressivedriving)情形;以及只有当该内燃机不参与攻击性驾驶情形且负载不大于所述第一阈值时,再生该吸附器催化剂。
附图说明
图1为揭示了本发明一个实施方案的算法的流程图。
图2为包括本发明另一个实施方案的系统的示意性图示。
图3为示出了控制图2所示系统的算法的一个实施方案的流程图。
图4为包括本发明另一个实施方案的系统的示意性图示。
图5为示出了控制图4所示系统的算法的一个实施方案的流程图。
图6为示出了当内燃机工作状况非期望时防止再生的算法的一个实施方案流程图。
发明详述
为了促进对本发明原理的理解,将参考附图所示实施方案并使用具体语言描述这些实施方案。然而将会理解,本发明的范围并不因此受到限制,且本发明相关领域技术人员通常将会想到所示装置的变更和调整以及此处所述本发明原理的另外应用。
本申请意识到通过周期性注入还原剂再生NOx吸附器催化剂的更复杂问题之一为催化剂的吸附效率随时间退化。当这种情况发生时,每个再生周期之后,被吸附的NOx的数量减少。注入计时和注入的还原剂数量很快将不会恰当地追踪吸附在催化剂上的NOx的数量。无法恰当追踪NOx吸附器催化剂的再生需要,这导致了由于NOx吸附器无法吸附而使NOx排放增加。此外,由于当还原剂在不需要时被释放,因此浪费了还原剂。本申请提供了当催化剂退化时维持系统性能的方法。
参考图1,示出了通常描述本发明一种方法的算法10。触发修正算法10开始于区块11,该区块确定内燃机工作状况。本发明优选地利用被消耗的燃料数量作为内燃机工作状况。然而,可以使用其他内燃机工作状况,包括内燃机周期数目或内燃机空气质量流量。在区块12,作出关于内燃机工作状况是否满足再生触发数值的决定。如果不满足再生触发数值,则该算法返回到在区块11中确定内燃机工作状况。如果内燃机工作状况已经达到再生触发数值,则在区块13指示吸附器的再生。
在吸附器再生之后,在区块14确定吸附器效率的退化。通过使用包括存储于控制器内的退化方案的开环经验数据表,或者使用一对传感器以提供对吸附器状况的闭环评估,由此可以确定吸附器效率的退化。在本发明的一种形式中,该对传感器为氧气传感器,然而在另一个形式中,该对传感器为NOx传感器。NOx传感器着眼于直接测量NOx。在区块15,将该吸附器效率与最小阈值数值比较。如果满足该最小阈值数值,则该算法结束。如果不满足,则该算法继续进行到区块16,其中基于吸附器退化的数量而修正再生触发数值。在返回到区块11该算法的开始时,该算法随后使用新的再生触发数值。
参考图2,示出了本发明一个实施方案的示意图。内燃机20连接到燃料源21,该燃料源提供将在内燃机20内部燃烧的燃料。所示的内燃机仅仅是示意性的,而非限于基于该图示的内燃机。该内燃机可以但不限于具有一个或多个气缸的直列式或者V内燃机,可以是电火花点火或者压缩点火内燃机。另外,该内燃机可以使用气相或液相燃料。废气通过废气出口22从内燃机排放,并在继续穿过废气管24到达环境气氛之前穿过废气管24到达NOx吸附器23。包括NOx吸附器23的外壳包括入口31和出口32。从还原剂供给源25施加还原剂,并将还原剂通过注入器26注入到废气管24内。在优选形式中,还原剂源为燃料源21,该还原剂源与注入器26流动连通。在本发明另一个形式中,由内燃机燃料注入系统将还原剂直接传送到气缸内。另外,本申请考虑使用本领域技术人员已知的方法将还原剂提供到NOx吸附器23的入口31。
入口氧气传感器27测量入口31废气的氧气含量,出口氧气传感器28测量出口32废气的氧气含量。控制器29从燃料源21接收与内燃机20所消耗的燃料数量相对应的输入。从燃料源21到控制器29的信号被用于确定被消耗的燃料数量。在本申请的一个形式中,计算所消耗的燃料数量。优选地但是并不限制本申请,所消耗的燃料数量为离散数值的总和。此外,第一氧气传感器27和第二氧气传感器28的输出被输入到控制器29。控制器29随后确定供给还原剂的时间以及通过注入器26供给到NOx吸附器入口31的还原剂数量。控制器29随后发送输出信号到还原剂供给源25。尽管已经参照两个氧气传感器描述了本申请,但是还可以考虑利用来自一对NOx传感器的输出。
还原剂供给源25可进一步包括泵,从而向注入器26提供压缩数量的还原剂。在一个形式中,该系统包括辅助的泵以压缩还原剂。如前在本发明另一个形式中所述,通过内燃机燃料注入系统将还原剂传送到气缸内。该还原剂供给源可以是燃料源21,该燃料源21置成与注入器26流体连通。另外,此处可考虑使用本领域技术人员已知的其他方法将还原剂供给到NOx吸附器。如果来自第一氧气传感器27和第二氧气传感器28的输入表明吸附器的效率已经降低到最小水平以下,则将输出信号发送到显示器30以表明催化剂已经失灵。失灵会导致进一步的活动,例如脱硫事件或者替换催化剂。
参考图3,示出了用于控制图2所示系统的触发器修正算法34的一个实施方案。算法34开始于区块35,确定内燃机目前的燃料消耗。在图3中使用符号Fn表示内燃机目前的燃料消耗数值。区块36随后确定是否已经执行了至少一个再生周期。在图3中使用符号b表示再生周期的数目。如果未执行至少一个再生周期,则该算法进行到区块37。在区块37,将目前的燃料消耗数值与再生触发燃料消耗数值比较。在图3中使用符号Ft表示再生触发燃料消耗数值。如果燃料消耗数值大于或者等于再生触发燃料消耗数值,则在区块38表明吸附器再生。如果目前的燃料消耗数值小于再生触发燃料消耗数值,则控制系统返回确定新的目前燃料消耗数值。
在区块38再生NOx吸附器23之后,来自第一氧气传感器27和第二氧气传感器28的输入允许控制器确定传感器上的第一特性。在本发明的一个形式中,第一特性为延迟时间,然而此处还可以考虑其他特性。这在区块39中使用符号Dn表示。算法随后进行到区块40,决定是否实际延迟时间小于或者等于使用符号D0表示的最小延迟时间阈值数值。如果实际延迟时间小于或者等于该最小延迟时间阈值数值,则如区块41所示开始脱硫事件。在区块41脱硫事件之后,该算法随后进行到区块42,并再次确定氧气传感器上的实际延迟时间。在区块43,该算法确定氧气传感器上的实际延迟时间是否仍然小于或者等于最小延迟时间阈值数值。如果上述判断结果为真,则在区块44表明催化剂失灵/失效信号。在产生失效信号之后,该算法结束。
相反,如果在区块40或43确定传感器上的延迟大于最小延迟时间阈值数值D0,则该算法进行到区块45以计算百分比差值。通过先将预定基数的延迟时间减去实际延迟时间,随后将该差值除以该预定基数的延迟时间,由此计算该百分比差值。随后将该数值乘以100以确定该百分比差值。该预定基数的延迟时间对应于新鲜NOx吸附器上的延迟时间。在区块46,该算法随后计算修正的燃料消耗触发数值。使用符号Fideal表示该修正的燃料消耗触发数值。Fideal为比例常数a1、再生触发燃料消耗数值Ft和该百分比差值的函数。通过经验推导各类型内燃机和各种具体吸附器的比例常数a1。
在区块46计算Fideal之后,算法返回到区块35,并再次确定目前的燃料消耗。因为已经发生了一个再生周期,因此现在再生周期数目至少为1。因此,该算法进行到区块47,其中立即与目前的燃料消耗比较以确定是否大于或者等于修正的燃料消耗触发数值。这在区块47描述成Fn大于或者等于Fideal。如果该比较结果为真,则表明吸附器再生,且该算法进行到区块38。如果该比较结果不是真,则该算法返回且在区块35再次确定燃料消耗数值。
参考图4,示出了本发明另一个实施方案的示意图。读者将会注意到,使用相同特征数字描述前述的特征。如前所述,还原剂也可以直接传送到气缸内。内燃机20产生包含例如NOx污染物的废气,该废气从内燃机出口22排出并穿过NOx吸附器23。还原剂供给源25提供将被注入废气管24的还原剂,以帮助再生NOx吸附器23内的NOx吸附器催化剂。
控制器56包括根据经验确定的常数表以基于已经执行的再生周期数目修正预定燃料触发数值。一旦控制器确定再生周期被指示,输出信号被发送到还原剂供给源25,从而通过使用注入器26将还原剂注入到废气管路24。如前所述,还原剂供给源可以是燃料源21,该燃料源21将置成与注入器26流体连通。如果控制器56确定所执行的再生周期的数目表明NOx吸附器23的效率可能已经降低到小于预定的最小阈值,则输出信号被发送到显示器30以指示NOx吸附器23的失效。
参考图5,示出了用于控制图4所示系统的触发器修正算法62的一个实施方案。算法62开始于区块63,确定内燃机的当前燃料消耗。使用Fn代表内燃机的当前燃料消耗。算法接着进行到区块64,确定是否已经执行了至少一个再生周期。在图5中使用b代表再生周期的数目。如果尚未执行至少一个再生周期,则算法进行到区块65,将目前燃料消耗数值与再生触发燃料消耗数值比较。在图5中使用Ft代表再生触发燃料消耗数值。如果目前燃料消耗数值满足再生触发燃料消耗数值,则在区块66指示吸附器再生。如果该条件不满足,则算法返回到区块63以确定目前燃料消耗数值。
在指示并执行吸附器再生之后,该算法在区块67确定根据经验推导的修正常数。使用a2代表根据经验推导的修正常数。从包括修正常数表的控制器56提供该根据经验推导的修正常数。该算法随后接着进行到区块68,确定修正的燃料消耗触发数值。在图5使用Fideal代表修正的燃料消耗触发数值。Fideal为根据经验推导的修正常数a2和再生触发燃料消耗数值Ft的函数。在计算该修正的燃料消耗触发数值之后,该算法进行到区块69,将修正的燃料消耗触发数值与最小燃料触发数值比较。使用F0代表该最小燃料触发数值。在一个形式中,该最小燃料触发数值为固定数值或者从查找表获得的数值。在优选形式中,该最小燃料触发数值是基于经验的数值并构成表。
当修正的燃料消耗触发数值小于或者等于最小燃料触发数值F0时,该算法进行到区块70。区块70指示开始除硫事件。在发生该除硫事件之后,该算法进行到区块72,再次执行修正的燃料消耗触发数值与最小燃料触发数值之间的比较。当区块72确定修正的燃料消耗触发数值仍小于最小燃料触发数值F0时,算法进行到区块73,发送催化剂失效信号至显示器30。备选地,当区块69或72指示Fideal的数值大于最小燃料触发数值F0时,该算法返回到区块63以确定目前燃料消耗数值。
在返回到区块64时,再生周期的数目现在至少为一,该算法进行到区块74。在区块74,将目前燃料消耗数值与修正的燃料消耗触发数值Fideal比较。如果目前燃料消耗数值大于或者等于修正的燃料消耗触发数值,则在区块66指示吸附器再生。如果不满足该条件,则该算法返回到区块63。
尽管上述描述给出了本发明的一些实施方案,但是这些实施方案并不被认为是说明本发明的所有可能实施方案。例如,NOx吸附器催化剂可包含各种碱金属和贵金属,并可包含某些氧气存储化学品例如二氧化铈。氧气传感器可以是化学配比附近的开关类型、大范围加热氧气传感器(HEGO、WEGO)或者具有氧气检测信号的NOx传感器。可以构想可以检测空气燃料比率变化的任何传感器。
参考图6,示出了一个算法的一个实施方案,该算法将吸附器再生延迟直到不期望的工作状况已经过去。不期望的工作状况可以是例如内燃机负载或攻击性驾驶动作。在区块77,累计监测器基于与相关物质成比例的信号持续地对质量求和,该相关物质优选地为燃料消耗。在一些实施方案中,根据催化剂退化水平修正该累计数值。当累计监测器到达阈值时,设定标记以确定再生是否清除(clearance)了不期望的内燃机工作状况。为了保证在攻击性驾驶情形中使燃料效率最大化,监测该内燃机负载。只有当内燃机负载低于预定数值时,区块78发送清除信号进行再生。此外,在区块79,算法核查攻击性驾驶情形,且只有当该攻击性驾驶情形受到抑制时才发送清除信号进行再生。区块78和79将无限返回,直到其各个条件得到满足。只有当区块78或79提供清除信号时,区块80将随后开始吸附器再生。
尽管已经在图示和前述描述中详细示出和描述了本发明,但是这些图示和描述被认为是阐述性质而非限制性质,应当理解,仅仅示出和描述了优选实施方案,且落在本发明的精神范围内的所有改变和调整都期望得到保护。应该理解,上述描述中使用的优选的、优选地词语表示所描述的特征是更为期望的,但是所描述的特征并非必须的,而且没有所述特征的实施方案也应落在本发明的范围内。此外,当使用“至少一部分”和/或“一部分”的语言时,该项可包括一部分和/或整项,除非具体地作出相反意思的陈述。
Claims (23)
1.一种方法,包括:
操作包括后处理系统的内燃机,该后处理系统具有NOx吸附器催化剂,该内燃机包括用于触发该NOx吸附器催化剂再生的内燃机工作状况阈值数值;
确定该NOx吸附器催化剂的变化;以及
基于所述确定而调整该内燃机工作状况阈值数值,以触发该NOx吸附器催化剂的再生。
2.根据权利要求1所述的方法,其中所述确定是基于该NOx吸附器催化剂的效率变化。
3.根据权利要求1所述的方法,其中所述确定是开环操作。
4.根据权利要求1所述的方法,其中在所述确定动作中,由经验数据表获得该NOx吸附器催化剂的变化;以及
其中在所述确定中,由该NOx吸附器催化剂的效率变化确定该变化。
5.根据权利要求1所述的方法,其中所述确定动作是闭环操作。
6.根据权利要求1所述的方法,其中在所述确定动作内使用一对传感器。
7.根据权利要求6所述的方法,其中该对传感器为氧气传感器。
8.根据权利要求6所述的方法,其中该对传感器为NOx传感器。
9.根据权利要求1所述的方法,其中该内燃机工作状况阈值数值是基于该内燃机的燃料消耗。
10.根据权利要求1所述的方法,其中该内燃机工作状况阈值数值是基于内燃机周期数目。
11.根据权利要求1所述的方法,进一步包括,当该内燃机工作状况阈值数值得到满足时,触发该NOx吸附器催化剂的再生,其中所述触发包括将还原剂传送到该NOx吸附器催化剂。
12.一种方法,包括:
操作包括后处理系统的柴油机,该后处理系统具有NOx吸附器催化剂;
基于燃料消耗阈值数值触发NOx吸附器催化剂再生周期;
确定在经过多个该NOx吸附器催化剂再生周期之后该NOx吸附器催化剂效率的减小;以及
响应于所述确定修正该燃料消耗阈值数值。
13.根据权利要求12所述的方法,其中所述确定是开环操作。
14.根据权利要求12所述的方法,其中在所述确定动作中,使用经验数据表执行该NOx吸附器催化剂的效率减小。
15.根据权利要求12所述的方法,其中所述确定动作是闭环操作。
16.根据权利要求12所述的方法,其中在所述确定动作内使用一对传感器。
17.根据权利要求16所述的方法,其中该对传感器为氧气传感器。
18.根据权利要求16所述的方法,其中该对传感器为NOx传感器。
19.一种系统,包括:
消耗燃料并产生废气的柴油机;
NOx吸附器,与该废气流体连通,用于吸附至少部分该废气;
第一数值,用于触发所述NOx吸附器的第一再生周期;
控制系统,用于确定所述NOx吸附器的吸附效率的降低并输出第二数值,该第二数值与所述NOx吸附器的吸附效率的降低相对应;以及
控制器,基于所述第一数值和所述第二数值计算第三数值,所述第三数值触发所述NOx吸附器的第二再生周期,其中在每个所述再生周期内,还原剂被传送到所述NOx吸附器。
20.根据权利要求19所述的系统,其中所述第一数值是基于燃料消耗数值。
21.根据权利要求19所述的系统,其中所述控制系统包括两个传感器。
22.根据权利要求19所述的系统,其中所述控制系统包括经验表。
23.根据权利要求19所述的系统,进一步包括用于在柴油机工作期间将燃料输送到该柴油机内的燃料注入系统,其中所述燃料注入系统在每个所述再生周期内将还原剂传递到气缸内,且其中所述还原剂由该燃料界定。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57801504P | 2004-06-08 | 2004-06-08 | |
US60/578,015 | 2004-06-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009101598473A Division CN101598051B (zh) | 2004-06-08 | 2005-06-06 | 修正吸附器再生的触发水平的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101027465A CN101027465A (zh) | 2007-08-29 |
CN100529340C true CN100529340C (zh) | 2009-08-19 |
Family
ID=35510355
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009101598473A Expired - Fee Related CN101598051B (zh) | 2004-06-08 | 2005-06-06 | 修正吸附器再生的触发水平的方法 |
CNB2005800263858A Expired - Fee Related CN100529340C (zh) | 2004-06-08 | 2005-06-06 | 修正吸附器再生的触发水平的方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009101598473A Expired - Fee Related CN101598051B (zh) | 2004-06-08 | 2005-06-06 | 修正吸附器再生的触发水平的方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7721535B2 (zh) |
EP (1) | EP1753942B1 (zh) |
CN (2) | CN101598051B (zh) |
BR (1) | BRPI0511863A (zh) |
WO (1) | WO2005124113A2 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111417770A (zh) * | 2017-12-05 | 2020-07-14 | 法国大陆汽车公司 | 用于控制配备有选择性催化类型的废气后处理系统的内燃发动机的控制系统和方法 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2937378B1 (fr) * | 2008-10-16 | 2011-08-26 | Renault Sas | Procede de commande de purge d'un piege a oxydes d'azote |
FR2949812B1 (fr) * | 2009-09-10 | 2012-03-30 | Peugeot Citroen Automobiles Sa | Dispositif et procede de regulation de l'injection d'une quantite de reducteur en phase gaz |
WO2011075015A1 (en) * | 2009-12-18 | 2011-06-23 | Volvo Lastvagnar Ab | Method for controlling the reductant buffer level in an exhaust gas aftertreatment device |
GB2484505A (en) * | 2010-10-12 | 2012-04-18 | Gm Global Tech Operations Inc | Method and apparatus for regeneration of lean NOx trap in an internal combustion engine |
US9021779B2 (en) * | 2011-06-15 | 2015-05-05 | General Electric Company | Systems and methods for combustor emissions control |
US8631690B2 (en) * | 2011-10-28 | 2014-01-21 | GM Global Technology Operations LLC | Exhaust treatment methods and systems |
FR2985771A3 (fr) * | 2012-01-17 | 2013-07-19 | Renault Sa | Regeneration d'un piege a oxydes d'azote |
US10100689B2 (en) | 2015-03-27 | 2018-10-16 | Cummins Inc. | Systems and methods for desulfation of an oxidation catalyst for dual fuel engines |
GB2538961B (en) * | 2015-06-01 | 2017-10-11 | Ford Global Tech Llc | A method of adaptively controlling purging of a lean NOx trap |
WO2020150438A1 (en) | 2019-01-17 | 2020-07-23 | Ohio State Innovation Foundation | Systems, methods and materials for stable phase syngas generation |
CN110714822B (zh) * | 2019-11-21 | 2020-09-29 | 潍柴动力股份有限公司 | Dpf再生的控制方法及控制系统 |
GB2604602B (en) | 2021-03-08 | 2023-07-26 | Jaguar Land Rover Ltd | Apparatus and method for controlling a vehicle action |
Family Cites Families (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993007363A1 (fr) | 1991-10-03 | 1993-04-15 | Toyota Jidosha Kabushiki Kaisha | Dispositif pour purifier les gaz d'echappement d'un moteur a combustion interne |
US5784879A (en) | 1995-06-30 | 1998-07-28 | Nippondenso Co., Ltd. | Air-fuel ratio control system for internal combustion engine |
US5743084A (en) | 1996-10-16 | 1998-04-28 | Ford Global Technologies, Inc. | Method for monitoring the performance of a nox trap |
US5894725A (en) * | 1997-03-27 | 1999-04-20 | Ford Global Technologies, Inc. | Method and apparatus for maintaining catalyst efficiency of a NOx trap |
DE59800195D1 (de) * | 1998-01-09 | 2000-08-17 | Ford Global Tech Inc | Verfahren zur Regeneration einer Stickoxidfalle im Abgassystem eines Verbrennungsmotors |
JP3277881B2 (ja) * | 1998-04-06 | 2002-04-22 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE19816175A1 (de) | 1998-04-14 | 1999-10-21 | Degussa | Verfahren zur Überprüfung der Funktionstüchtigkeit eines Stickoxid-Speicherkatalysators |
US6244046B1 (en) | 1998-07-17 | 2001-06-12 | Denso Corporation | Engine exhaust purification system and method having NOx occluding and reducing catalyst |
US6651422B1 (en) * | 1998-08-24 | 2003-11-25 | Legare Joseph E. | Catalyst efficiency detection and heating method using cyclic fuel control |
DE19843879C2 (de) * | 1998-09-25 | 2003-05-08 | Bosch Gmbh Robert | Betrieb eines Verbrennungsmotors in Verbindung mit einem NOx-Speicherkatalysator und einem NOx-Sensor |
JP3750380B2 (ja) * | 1998-11-25 | 2006-03-01 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US6497092B1 (en) * | 1999-03-18 | 2002-12-24 | Delphi Technologies, Inc. | NOx absorber diagnostics and automotive exhaust control system utilizing the same |
FR2792033B1 (fr) * | 1999-04-12 | 2001-06-01 | Renault | Procede et dispositif de diagnostic de l'etat de fonctionnement d'un pot catalytique de traitement des gaz d'echappement d'un moteur a combustion interne |
JP3805562B2 (ja) | 1999-06-03 | 2006-08-02 | 三菱電機株式会社 | 内燃機関の排気浄化装置 |
JP2001050086A (ja) | 1999-08-09 | 2001-02-23 | Denso Corp | 内燃機関の空燃比制御装置 |
IT1310465B1 (it) * | 1999-09-07 | 2002-02-18 | Magneti Marelli Spa | Metodo autoadattativo di controllo di un sistema di scarico per motori a combustione interna ad accensione comandata. |
JP2001082135A (ja) * | 1999-09-09 | 2001-03-27 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2001241341A (ja) | 2000-02-28 | 2001-09-07 | Hitachi Ltd | 内燃機関の排気ガス浄化装置及び浄化方法 |
US6451602B1 (en) | 2000-03-02 | 2002-09-17 | Isis Pharmaceuticals, Inc. | Antisense modulation of PARP expression |
US6308515B1 (en) | 2000-03-17 | 2001-10-30 | Ford Global Technologies, Inc. | Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent |
US6487849B1 (en) | 2000-03-17 | 2002-12-03 | Ford Global Technologies, Inc. | Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency |
US6438944B1 (en) | 2000-03-17 | 2002-08-27 | Ford Global Technologies, Inc. | Method and apparatus for optimizing purge fuel for purging emissions control device |
US6499293B1 (en) * | 2000-03-17 | 2002-12-31 | Ford Global Technologies, Inc. | Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine |
US6327847B1 (en) | 2000-03-17 | 2001-12-11 | Ford Global Technologies, Inc. | Method for improved performance of a vehicle |
US6708483B1 (en) * | 2000-03-17 | 2004-03-23 | Ford Global Technologies, Llc | Method and apparatus for controlling lean-burn engine based upon predicted performance impact |
US6374597B1 (en) | 2000-03-17 | 2002-04-23 | Ford Global Technologies, Inc. | Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent |
US6481199B1 (en) | 2000-03-17 | 2002-11-19 | Ford Global Technologies, Inc. | Control for improved vehicle performance |
US6487850B1 (en) | 2000-03-17 | 2002-12-03 | Ford Global Technologies, Inc. | Method for improved engine control |
US6360530B1 (en) | 2000-03-17 | 2002-03-26 | Ford Global Technologies, Inc. | Method and apparatus for measuring lean-burn engine emissions |
US6477832B1 (en) | 2000-03-17 | 2002-11-12 | Ford Global Technologies, Inc. | Method for improved performance of a vehicle having an internal combustion engine |
US6370868B1 (en) | 2000-04-04 | 2002-04-16 | Ford Global Technologies, Inc. | Method and system for purge cycle management of a lean NOx trap |
JP2001355485A (ja) * | 2000-06-16 | 2001-12-26 | Isuzu Motors Ltd | 窒素酸化物吸蔵還元型触媒を備えた排気ガス浄化装置 |
US6427439B1 (en) * | 2000-07-13 | 2002-08-06 | Ford Global Technologies, Inc. | Method and system for NOx reduction |
DE10036453A1 (de) * | 2000-07-26 | 2002-02-14 | Bosch Gmbh Robert | Verfahren und Steuergerät zum Betreiben eines Stickoxid (NOx)-Speicherkatalysators |
US6422003B1 (en) | 2000-11-15 | 2002-07-23 | General Motors Corporation | NOX catalyst exhaust feedstream control system |
US6490858B2 (en) | 2001-02-16 | 2002-12-10 | Ashley J. Barrett | Catalytic converter thermal aging method and apparatus |
US6463733B1 (en) | 2001-06-19 | 2002-10-15 | Ford Global Technologies, Inc. | Method and system for optimizing open-loop fill and purge times for an emission control device |
US6539706B2 (en) | 2001-06-19 | 2003-04-01 | Ford Global Technologies, Inc. | Method and system for preconditioning an emission control device for operation about stoichiometry |
US6490860B1 (en) | 2001-06-19 | 2002-12-10 | Ford Global Technologies, Inc. | Open-loop method and system for controlling the storage and release cycles of an emission control device |
US6502387B1 (en) * | 2001-06-19 | 2003-01-07 | Ford Global Technologies, Inc. | Method and system for controlling storage and release of exhaust gas constituents in an emission control device |
US6487853B1 (en) * | 2001-06-19 | 2002-12-03 | Ford Global Technologies. Inc. | Method and system for reducing lean-burn vehicle emissions using a downstream reductant sensor |
US6467259B1 (en) | 2001-06-19 | 2002-10-22 | Ford Global Technologies, Inc. | Method and system for operating dual-exhaust engine |
US6604504B2 (en) | 2001-06-19 | 2003-08-12 | Ford Global Technologies, Llc | Method and system for transitioning between lean and stoichiometric operation of a lean-burn engine |
US6629409B2 (en) | 2001-06-20 | 2003-10-07 | Ford Global Technologies, Llc | System and method for determining set point location for oxidant-based engine air/fuel control strategy |
DE10139992B4 (de) * | 2001-08-16 | 2006-04-27 | Daimlerchrysler Ag | Verfahren zur Regelung der Gemischzusammensetzung für einen Ottomotor mit NOx-Speicherkatalysator während einer Regenerationsphase |
US6453663B1 (en) | 2001-08-16 | 2002-09-24 | Ford Global Technologies, Inc | NOx sensor monitoring |
US7111451B2 (en) * | 2004-09-16 | 2006-09-26 | Delphi Technologies, Inc. | NOx adsorber diagnostics and automotive exhaust control system utilizing the same |
-
2005
- 2005-06-06 BR BRPI0511863-8A patent/BRPI0511863A/pt not_active IP Right Cessation
- 2005-06-06 WO PCT/US2005/019850 patent/WO2005124113A2/en active Application Filing
- 2005-06-06 CN CN2009101598473A patent/CN101598051B/zh not_active Expired - Fee Related
- 2005-06-06 EP EP05784978.8A patent/EP1753942B1/en not_active Not-in-force
- 2005-06-06 CN CNB2005800263858A patent/CN100529340C/zh not_active Expired - Fee Related
-
2006
- 2006-12-08 US US11/636,184 patent/US7721535B2/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111417770A (zh) * | 2017-12-05 | 2020-07-14 | 法国大陆汽车公司 | 用于控制配备有选择性催化类型的废气后处理系统的内燃发动机的控制系统和方法 |
CN111417770B (zh) * | 2017-12-05 | 2022-03-01 | 法国大陆汽车公司 | 用于控制配备有选择性催化类型的废气后处理系统的内燃发动机的控制系统和方法 |
US11274587B2 (en) | 2017-12-05 | 2022-03-15 | Continental Automotive France | System and method for controlling an internal combustion engine provided with an exhaust gas post-treatment system of the selective catalysis type |
Also Published As
Publication number | Publication date |
---|---|
CN101598051B (zh) | 2013-03-06 |
EP1753942A4 (en) | 2008-10-29 |
US20070240407A1 (en) | 2007-10-18 |
WO2005124113A2 (en) | 2005-12-29 |
BRPI0511863A (pt) | 2008-01-15 |
EP1753942A2 (en) | 2007-02-21 |
US7721535B2 (en) | 2010-05-25 |
CN101027465A (zh) | 2007-08-29 |
CN101598051A (zh) | 2009-12-09 |
WO2005124113A3 (en) | 2006-06-15 |
EP1753942B1 (en) | 2015-01-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9475006B2 (en) | SCR catalyst ammonia surface coverage estimation and control | |
US7721535B2 (en) | Method for modifying trigger level for adsorber regeneration | |
CN101316993B (zh) | 废气净化系统的控制方法以及废气净化系统 | |
RU2667852C2 (ru) | Устройство и способ для воздействия на количество оксидов азота в выхлопных газах из двигателя внутреннего сгорания | |
CN106884702B (zh) | 氮氧化物还原系统的氨气排放管理方法 | |
US8020372B2 (en) | Apparatus and method for optimizing exhaust temperature control in a vehicle during particulate filter regneration | |
CN102486111B (zh) | 预测DeNOx催化剂中的NOx装载的方法及使用该方法的排放系统 | |
CN108691620B (zh) | 包括氨存储控制系统的排气处理系统 | |
CN101680329A (zh) | NOx净化系统的控制方法及NOx净化系统 | |
WO2010079592A1 (ja) | 内燃機関の排気浄化装置 | |
US9051865B2 (en) | Method for controlling a system for the treatment of exhaust gases from an internal combustion engine | |
US20130067890A1 (en) | Method of optimizing operating costs of an internal combustion engine | |
US9644513B2 (en) | Method of regenerating lean NOx trap of exhaust purification system provided with lean NOx trap and selective catalytic reduction catalyst and exhaust purification system | |
JP4174685B1 (ja) | 内燃機関の排気浄化装置 | |
US20180328252A1 (en) | Exhaust Gas Control System for Internal Combustion Engine and Method of Controlling Exhaust Gas Control System for Internal Combustion Engine | |
US20080202096A1 (en) | Particulate regeneration and engine control system | |
JP2009036055A (ja) | 排気処理装置の制御装置 | |
CN101676531A (zh) | 用于微粒过滤器再生的温度控制系统和方法 | |
US8806852B2 (en) | Method for controlling regeneration within an after-treatment component of a compression-ignition engine | |
KR101610114B1 (ko) | Lnt의 성능 유지를 위한 제어방법 및 이의 제어시스템 | |
JP2021050700A (ja) | N2o推定方法及び装置 | |
JP2018178774A (ja) | 排気浄化システム | |
KR20160044358A (ko) | 보일러 탈질설비 제어 시스템 | |
SE1450230A1 (sv) | Avgasbehandlingssystem och förfarande för behandling av en avgasström |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20120606 |