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51.发明授权Model-based diagnostics of NOx sensor malfunction for selective catalyst reduction system 有权用于选择性催化剂还原系统的基于模型的NOx传感器故障诊断公开(公告)号：US08555613B2
公开(公告)日：2013-10-15
申请号：US12395790
申请日：2009-03-02
IPC分类号： F01N3/00
CPC分类号： F01N11/007 , F01N11/005 , F01N2550/02 , F01N2560/026 , F02B29/0406 , F02B37/24 , F02D41/146 , F02D41/1463 , F02D41/1465 , F02D41/222 , F02D2041/1433 , F02M26/10 , F02M26/12 , F02M26/15 , F02M26/23 , Y02T10/40 , Y02T10/47
摘要： Methods and systems for detecting faults with nitrogen oxides sensors used to detect the presence of nitrogen oxides in an exhaust effluent gas stream emitted from a combustion engine during its operation include providing a virtual nitrogen oxides sensor measurement compared with actual nitrogen oxides content measured by nitrogen oxides sensors.
摘要翻译： 用于检测氮氧化物传感器的故障的方法和系统，用于检测在其操作期间从内燃机排放的排气流出气流中氮氧化物的存在，包括与氮氧化物测量的实际氮氧化物含量相比提供虚拟氮氧化物传感器测量值 传感器。
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52.发明授权公开(公告)号：US08511154B2
公开(公告)日：2013-08-20
申请号：US13109062
申请日：2011-05-17
申请人： Yue-Yun Wang , Ibrahim Haskara
发明人： Yue-Yun Wang , Ibrahim Haskara
IPC分类号： G01M15/04
CPC分类号： F02D41/0002 , F02B1/12 , F02B29/0406 , F02D41/0072 , F02D41/1446 , F02D41/1448 , F02D41/18 , F02D2200/0402 , F02D2200/0406 , F02D2200/0411 , F02D2200/0414 , F02D2200/101 , F02M26/47 , Y02T10/42 , Y02T10/47
摘要： A method for estimating a cylinder air charge for an internal combustion engine includes determining a first volumetric efficiency corresponding to engine operation with an open exhaust gas recirculation valve, determining a second volumetric efficiency corresponding to engine operation with a closed exhaust gas recirculation valve, determining a cylinder air charge using a selected one of the first and second volumetric efficiencies.
摘要翻译： 一种用于估计用于内燃机的气缸空气充量的方法包括：利用打开的废气再循环阀确定与发动机运转相对应的第一体积效率，利用封闭的废气再循环阀确定与发动机运转相对应的第二容积效率， 使用所选择的第一和第二容积效率之一的气缸空气充量。
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53.发明授权System and method for detecting low quality reductant and catalyst degradation in selective catalytic reduction systems 有权用于检测选择性催化还原体系中低质量还原剂和催化剂降解的系统和方法公开(公告)号：US08495862B2
公开(公告)日：2013-07-30
申请号：US12974366
申请日：2010-12-21
IPC分类号： F01N11/00
CPC分类号： F01N3/208 , F01N11/00 , F01N13/009 , F01N2550/02 , F01N2550/05 , F01N2900/1616 , F01N2900/1621 , Y02T10/24 , Y02T10/47
摘要： A control system for a selective catalytic reduction (SCR) system includes a conversion efficiency determination module, an ammonia slip determination module, and a diagnostic module. The conversion efficiency determination module determines a conversion efficiency of an SCR catalyst. The ammonia slip determination module determines an amount of ammonia slip across the SCR catalyst when the conversion efficiency is less than a predetermined threshold. The diagnostic module determines pass/fail statuses of a reductant supply and the SCR catalyst based on the amount of ammonia slip and at least one ammonia slip threshold.
摘要翻译： 用于选择性催化还原（SCR）系统的控制系统包括转换效率确定模块，氨滑移确定模块和诊断模块。 转换效率确定模块确定SCR催化剂的转换效率。 当转换效率小于预定阈值时，氨滑移确定模块确定SCR催化剂上的氨滑移量。 诊断模块基于氨滑移量和至少一个氨滑移阈值来确定还原剂供应源和SCR催化剂的通过/失败状态。
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公开(公告)号：US20120303206A1
公开(公告)日：2012-11-29
申请号：US13116055
申请日：2011-05-26
IPC分类号： F01N11/00
CPC分类号： F02D41/146 , F02D41/222 , Y02T10/40
摘要： A method that includes in-vehicle systems and practices for determining whether a NOx sensor in an exhaust stream is performing properly. The method uses the gain and/or the offset of the NOx sensor to determine its accuracy.
摘要翻译： 一种包括用于确定排气流中的NOx传感器是否正常执行的车载系统和实践的方法。 该方法使用NOx传感器的增益和/或偏移来确定其精度。
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55.发明申请OFFSET AND SLOW RESPONSE DIAGNOSTIC METHODS FOR NOx SENSORS IN VEHICLE EXHAUST TREATMENT APPLICATIONS 有权车辆排气处理应用中NOx传感器的偏差和慢响应诊断方法公开(公告)号：US20120255277A1
公开(公告)日：2012-10-11
申请号：US13081801
申请日：2011-04-07
IPC分类号： F01N11/00
CPC分类号： F02D41/222 , F01N3/0814 , F01N3/2066 , F01N2560/026 , F01N2560/06 , F02D41/123 , F02D41/1463 , F02D2041/228 , F02D2200/0614 , Y02A50/2325
摘要： A method that includes in-vehicle systems and practices for determining whether a NOx sensor in an exhaust stream is performing properly.
摘要翻译： 一种包括用于确定排气流中的NOx传感器是否正常执行的车载系统和实践的方法。
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56.发明授权Model-based control of airpath pressure limits by modulating a turbo charger by-pass valve and a variable-geometry turbine 有权通过调节涡轮增压器旁通阀和可变几何涡轮机，对空气路径压力极限进行模型控制公开(公告)号：US08209979B2
公开(公告)日：2012-07-03
申请号：US12409761
申请日：2009-03-24
CPC分类号： F02D41/0007 , F02B37/004 , F02B37/013 , F02B37/18 , F02B37/24 , F02D41/1446 , F02D41/1448 , F02M26/05 , F02M26/23 , F02M26/48 , Y02T10/144
摘要： Simultaneous or independent control of a by-pass valve and a variable-geometry forced induction component on a combustion engine is based on operational parameters measured by various sensors provided as inputs to a control module. Sudden loss of power due to low turbine efficiencies is prevented during transitions between operating conditions of engine speed and load. Excessive peak cylinder pressures are also prevented by controlling engine boost pressure to a permitted limit at high engine speed and load.
摘要翻译： 对内燃机上的旁通阀和可变几何强制感应部件的同时或独立的控制是基于由作为控制模块的输入提供的各种传感器测量的操作参数。 在发动机转速和负荷的运行条件之间的过渡期间，可以防止由于低涡轮机效率引起的突然的功率损失。 在高发动机转速和负载下，通过将发动机增压压力控制在允许的极限值，也可以防止过大的气缸压力。
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57.发明授权公开(公告)号：US08171720B2
公开(公告)日：2012-05-08
申请号：US12245830
申请日：2008-10-06
申请人： Yue-Yun Wang , Ognyan N. Yanakiev , Man-Feng Chang
发明人： Yue-Yun Wang , Ognyan N. Yanakiev , Man-Feng Chang
IPC分类号： F01N3/00
CPC分类号： F01N3/2066 , F01N9/00 , F01N11/00 , F01N2240/20 , F01N2550/02 , F01N2550/05 , F01N2610/00 , Y02T10/24 , Y02T10/47
摘要： A method for indicating a non-urea reductant fault in a powertrain including an internal combustion engine and an aftertreatment system having an aftertreatment device utilizing a catalyst to convert NOx includes monitoring a NOx content exiting the aftertreatment system subsequent to a powertrain start-up event through a test span, monitoring a measure of NOx content entering the aftertreatment system subsequent to a powertrain start-up event through the test span, and determining a measure of NOx conversion accomplished in the aftertreatment device based upon the NOx content exiting the aftertreatment system and the measure of NOx content entering the aftertreatment system. The method includes, through the test span, comparing the measure of NOx conversion determined at a start of the test span to the measure of NOx conversion at a later time within the test span. A non-urea reductant fault is indicated based upon the comparing identifying a reduction in NOx conversion accomplished in the aftertreatment device between the start of the test span and the later time within the test span.
摘要翻译： 一种用于指示包括内燃机和具有利用催化剂转化NOx的后处理装置的后处理装置的动力系中的非尿素还原剂故障的方法包括在动力系启动事件之后监测离开后处理系统的NOx含量，通过 测试跨度，监测在通过测试跨度的动力系启动事件之后进入后处理系统的NOx含量的量度，以及基于离开后处理系统的NOx含量确定在后处理装置中完成的NOx转化的量度， 测量进入后处理系统的NOx含量。 该方法包括，通过测试跨度，将在测试跨度开始时确定的NOx转化量与在测试范围内的稍后时间内的NOx转化量进行比较。 基于比较确定在测试跨度开始和测试跨度之后的后期处理装置中完成的NOx转化率的降低来指示非尿素还原剂故障。
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58.发明申请METHOD AND APPARATUS FOR MONITORING A REDUCTANT INJECTION SYSTEM IN AN EXHAUST AFTERTREATMENT SYSTEM 有权用于在排气系统中监测减少注射系统的方法和装置公开(公告)号：US20120067031A1
公开(公告)日：2012-03-22
申请号：US12885821
申请日：2010-09-20
CPC分类号： F01N11/00 , F01N3/208 , F01N2550/05 , F01N2900/0418 , F01N2900/1808 , F01N2900/1812 , F01N2900/1821 , Y02T10/24 , Y02T10/47
摘要： A reductant injector is configured to dispense a reductant into an exhaust gas feedstream of an internal combustion engine upstream of a selective catalytic reduction device. The reductant injector of a reductant injection system is monitored by generating injector pulsewidth commands corresponding to a prescribed reductant flowrate, monitoring the injector pulsewidth commands, verifying the prescribed reductant flowrate corresponds to the injector pulsewidth commands, monitoring a fluidic pressure in the reductant injection system, estimating a first injected quantity of the reductant corresponding to the injector pulsewidth commands, estimating a second injected quantity of the reductant corresponding to the fluidic pressure in the reductant injection system, and comparing the first and second injected quantities of reductant.
摘要翻译： 还原剂喷射器构造成将还原剂分配到选择性催化还原装置上游的内燃机的废气进料流中。 通过产生对应于规定的还原剂流量的喷射脉冲宽度命令来监测还原剂喷射系统的还原剂喷射器，监测喷射器脉冲宽度命令，验证与喷射器脉冲宽度命令对应的规定的还原剂流量，监测还原剂喷射系统中的流体压力， 估计对应于喷射脉冲宽度指令的还原剂的第一喷射量，估计与还原剂喷射系统中的流体压力对应的还原剂的第二喷射量，以及比较第一和第二喷射量的还原剂。
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公开(公告)号：US20120042850A1
公开(公告)日：2012-02-23
申请号：US12857900
申请日：2010-08-17
申请人： Ibrahim Haskara , Yue-Yun Wang
发明人： Ibrahim Haskara , Yue-Yun Wang
CPC分类号： F02D41/30 , F02B17/005 , F02D41/0072 , F02D41/04 , F02D41/107 , F02D41/1444 , F02D41/1445 , F02D41/182 , F02D41/3035 , F02D41/401 , F02D2041/1432 , F02D2200/0411 , F02D2200/0614 , F02D2200/10 , F02D2200/101 , F02D2250/21 , Y02T10/44 , Y02T10/47
摘要： A method for controlling a direct-injection internal combustion engine includes monitoring internal combustion engine operational parameters, determining a start of injection in response to the engine operational parameters, monitoring an intake air flow comprising a residual gas component, monitoring an exhaust gas flow, monitoring a fuel flow, determining a time constant corresponding to an intake air flow reaction time based upon the intake air flow, the exhaust gas flow, and the fuel flow, modifying the start of injection with the time constant, and operating the engine subject to the modified start of injection.
摘要翻译： 用于控制直喷式内燃机的方法包括监测内燃机运行参数，响应于发动机操作参数确定喷射开始，监测包括残余气体组分的进气流量，监测废气流量，监测 燃料流量，基于进气流量，排气流量和燃料流量确定对应于进气流量反应时间的时间常数，以时间常数修改喷射开始，并且对发动机进行操作， 修改注射开始。
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60.发明授权Robust design of diagnostic enabling conditions for SCR NOx conversion efficiency monitor 有权可靠的SCR可靠性设计，可用于SCR NOx转换效率监控公开(公告)号：US08091416B2
公开(公告)日：2012-01-10
申请号：US12355094
申请日：2009-01-16
IPC分类号： G01M15/10
CPC分类号： F01N3/2066 , F01N11/00 , Y02T10/24 , Y02T10/47
摘要： A method for controlling a malfunction catalyst diagnostic test that determines a malfunction status of a catalyst within a selective catalytic reduction device includes monitoring an exhaust gas flow within an aftertreatment system, estimating an effect of the exhaust gas flow on an estimated reductant storage on a catalyst within the selective catalytic reduction device, and selectively disabling the malfunction catalyst diagnostic test based upon the estimating the effect of the exhaust gas flow on the estimated reductant storage.
摘要翻译： 一种用于确定选择性催化还原装置内的催化剂的故障状态的故障催化剂诊断试验的方法包括监测后处理系统中的废气流，估计废气流对催化剂上估计的还原剂储存的影响 在选择性催化还原装置内，并且基于估计废气流对估计的还原剂储存器的影响，选择性地禁用故障催化剂诊断试验。
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