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91.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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92.发明申请公开(公告)号：US20080216557A1
公开(公告)日：2008-09-11
申请号：US11682377
申请日：2007-03-06
申请人： Yue-Yun Wang , Yongsheng He
发明人： Yue-Yun Wang , Yongsheng He
IPC分类号： G01N25/00
CPC分类号： F02D41/0072 , F02B29/0406 , F02D35/025 , F02D41/1405 , F02D41/1447 , F02D41/187 , F02M26/05 , F02M26/10 , F02M26/23 , F02M26/48 , F02M26/49 , Y02T10/47
摘要： The invention comprises a method and an article of manufacture to estimate exhaust gas temperature of an internal combustion engine during ongoing operation of the engine. This comprises determining states of a plurality of parameters of a combustion charge. A heat release of the combustion charge is estimated based thereon, and an exhaust gas temperature is estimated based upon the estimated heat release. Exemplary parameters of the combustion charge comprise engine speed, mass air flowrate, engine fueling and fuel injection timing, and, recirculated exhaust gas fraction.
摘要翻译： 本发明包括一种用于在发动机正在进行的操作期间估计内燃机的排气温度的方法和制品。 这包括确定燃烧装料的多个参数的状态。 基于此估计燃烧装料的放热，并且基于估计的热释放来估计废气温度。 燃烧装料的示例性参数包括发动机速度，质量空气流量，发动机燃料供应和燃料喷射正时以及再循环废气馏分。
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93.发明授权Offset and slow response diagnostic methods for NOx sensors in vehicle exhaust treatment applications 有权车辆尾气处理应用中NOx传感器的偏移和慢响应诊断方法公开(公告)号：US08930121B2
公开(公告)日：2015-01-06
申请号：US13081801
申请日：2011-04-07
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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公开(公告)号：US08694197B2
公开(公告)日：2014-04-08
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 of diagnosing vehicle NOx sensor faults that includes sensing that an exhaust gas recirculating (EGR) valve is closed and that fuel flow to a vehicle engine is above a predetermined rate using an electronic control unit (ECU) located on a vehicle; recording the output received from an NOx sensor relative to an amount of fuel consumption over a period of time using the ECU; calculating the mean of the NOx sensor output relative to fuel consumption recorded over the period of time using the ECU; performing a least-squares estimation (LSE) using the ECU for more than one calculated mean based on an expected NOx sensor output; generating a NOx sensor gain for the NOx sensor using the ECU based on the LSE; and determining whether the NOx sensor gain is above or below a predetermined threshold.
摘要翻译： 一种诊断车辆NOx传感器故障的方法，其包括使用位于车辆上的电子控制单元（ECU）感测废气再循环（EGR）阀关闭并且到车辆发动机的燃料流量高于预定速率; 使用ECU记录从NOx传感器接收的输出相对于一段时间内的燃料消耗量; 使用ECU计算相对于在一段时间内记录的燃料消耗的NOx传感器输出的平均值; 基于预期的NOx传感器输出，使用ECU对多于一个计算平均值执行最小二乘估计（LSE）; 使用基于LSE的ECU为NOx传感器生成NOx传感器增益; 以及确定NOx传感器增益是否高于或低于预定阈值。
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95.发明申请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系统中低质量降低和催化降解的系统和方法公开(公告)号：US20120085082A1
公开(公告)日：2012-04-12
申请号：US12974366
申请日：2010-12-21
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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96.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：US20110083424A1
公开(公告)日：2011-04-14
申请号：US12576399
申请日：2009-10-09
CPC分类号： F01N11/00 , F01N3/208 , F01N2550/05 , F01N2610/02 , F01N2610/144 , F01N2900/0418 , F01N2900/1806 , F01N2900/1808 , F01N2900/1812 , F01N2900/1822 , Y02T10/24 , Y02T10/47
摘要： An internal combustion engine operating at a lean air/fuel ratio includes a reductant injection system configured to dispense reductant into an exhaust gas feedstream upstream of a selective catalytic reduction device. The reductant injection system includes a reductant delivery system fluidly coupled to a reductant dispensing device that is configured to dispense the reductant. A method for monitoring the reductant injection system includes commanding the reductant dispensing device to dispense reductant at a prescribed reductant flowrate, controlling the reductant delivery system to a preferred operating state, monitoring operation of the reductant delivery system and estimating a reductant flowrate as a function of the monitored operation of the reductant delivery system, and diagnosing operation of the reductant injection system as a function of the prescribed reductant flowrate and the estimated reductant flowrate.
摘要翻译： 以稀薄空气/燃料比工作的内燃机包括还原剂喷射系统，其配置成将还原剂分配到选择性催化还原装置上游的废气进料流中。 还原剂注射系统包括流体耦合到还原剂分配装置的还原剂递送系统，其被配置成分配还原剂。 用于监测还原剂注射系统的方法包括命令还原剂分配装置以规定的还原剂流量分配还原剂，将还原剂递送系统控制到优选的操作状态，监测还原剂递送系统的操作并估计还原剂流量作为 还原剂输送系统的监测操作，以及根据规定的还原剂流速和估计的还原剂流速来诊断还原剂注入系统的操作。
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97.发明申请ON-BOARD DIAGNOSTICS OF TEMPERATURE SENSORS FOR SELECTIVE CATALYST REDUCTION SYSTEM 有权用于选择性催化还原系统的温度传感器的板上诊断公开(公告)号：US20100235141A1
公开(公告)日：2010-09-16
申请号：US12404400
申请日：2009-03-16
申请人： Yue-Yun Wang , Yongsheng He
发明人： Yue-Yun Wang , Yongsheng He
CPC分类号： F02D41/222 , F01N3/2066 , F01N2550/00 , F02D41/1441 , F02D41/1446 , Y02T10/40
摘要： Methods and systems for detecting faults in temperature sensors on engine systems provided with equipment for treatment of combustion products of an exhaust effluent stream during engine operation include determining sensor faults from differences in temperature between sensors present in such systems over time. Estimated exhaust gas temperatures may be compared against real time temperature measurements to arrive at a diagnostic residual value representing the difference between a modeled value and measured value, and deviation of the measured value from the modeled value is used to indicate a sensor fault.
摘要翻译： 用于检测发动机系统中温度传感器故障的方法和系统，其具有用于在发动机运行期间处理排气流出物流的燃烧产物的设备，其包括根据时间上存在于这些系统中的传感器之间的温度差来确定传感器故障。 可以将估计的废气温度与实时温度测量进行比较，以得出表示建模值和测量值之间的差异的诊断残值，并将测量值与建模值的偏差用于指示传感器故障。
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98.发明授权Method and apparatus for estimating exhaust pressure of an internal combustion engine 有权用于估计内燃机的排气压力的方法和装置公开(公告)号：US07438061B2
公开(公告)日：2008-10-21
申请号：US11466114
申请日：2006-08-22
申请人： Yue-Yun Wang , Anupam Gangopadhyay
发明人： Yue-Yun Wang , Anupam Gangopadhyay
CPC分类号： F02D23/02 , F01N3/021 , F01N3/106 , F01N2560/06 , F01N2560/08 , F02B29/0406 , F02B37/22 , F02D41/0007 , F02D41/0072 , F02D41/1445 , F02D41/145 , F02M26/05 , F02M26/23 , F02M26/47 , F02M26/48 , G01M15/106 , Y02T10/144 , Y02T10/47
摘要： A method and apparatus are provided, comprising an internal combustion engine equipped with a variable geometry intake air compressing device and a control module operative to estimate exhaust gas pressure during ongoing engine operation. The control module is adapted to monitor sensing devices of the internal combustion engine, and is adapted to execute algorithms. The method comprises monitoring signal inputs from the sensing devices, and determining operating parameters for exhaust flow and an exhaust pressure of the intake air compressing device. An exhaust pressure ratio is determined based upon the parameters for exhaust flow and the exhaust pressure of the intake air compressing device. An exhaust pressure is determined based upon the exhaust pressure ratio.
摘要翻译： 提供了一种方法和装置，其包括配备有可变几何形状的进气压缩装置的内燃机和用于在正在进行的发动机运转期间估计废气压力的控制模块。 控制模块适于监测内燃机的感测装置，并且适于执行算法。 该方法包括监测来自感测装置的信号输入，以及确定排气流动的运行参数和进气压缩装置的排气压力。 基于排气流量的参数和进气压缩装置的排气压力来确定排气压力比。 基于排气压力比确定排气压力。
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99.发明授权Method and apparatus for monitoring a reductant injection system in an exhaust aftertreatment system 有权用于在排气后处理系统中监测还原剂注射系统的方法和装置公开(公告)号：US08915062B2
公开(公告)日：2014-12-23
申请号：US12576399
申请日：2009-10-09
CPC分类号： F01N11/00 , F01N3/208 , F01N2550/05 , F01N2610/02 , F01N2610/144 , F01N2900/0418 , F01N2900/1806 , F01N2900/1808 , F01N2900/1812 , F01N2900/1822 , Y02T10/24 , Y02T10/47
摘要： An internal combustion engine operating at a lean air/fuel ratio includes a reductant injection system configured to dispense reductant into an exhaust gas feedstream upstream of a selective catalytic reduction device. The reductant injection system includes a reductant delivery system fluidly coupled to a reductant dispensing device that is configured to dispense the reductant. A method for monitoring the reductant injection system includes commanding the reductant dispensing device to dispense reductant at a prescribed reductant flowrate, controlling the reductant delivery system to a preferred operating state, monitoring operation of the reductant delivery system and estimating a reductant flowrate as a function of the monitored operation of the reductant delivery system, and diagnosing operation of the reductant injection system as a function of the prescribed reductant flowrate and the estimated reductant flowrate.
摘要翻译： 以稀薄空气/燃料比工作的内燃机包括还原剂喷射系统，其配置成将还原剂分配到选择性催化还原装置上游的废气进料流中。 还原剂注射系统包括流体耦合到还原剂分配装置的还原剂递送系统，其被配置为分配还原剂。 用于监测还原剂注射系统的方法包括命令还原剂分配装置以规定的还原剂流量分配还原剂，将还原剂递送系统控制到优选的操作状态，监测还原剂递送系统的操作并估计还原剂流量作为 还原剂输送系统的监测操作，以及根据规定的还原剂流速和估计的还原剂流速来诊断还原剂注入系统的操作。
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公开(公告)号：US20140067230A1
公开(公告)日：2014-03-06
申请号：US13605197
申请日：2012-09-06
IPC分类号： F02B37/12
CPC分类号： F02B37/18 , F02B37/004 , F02B37/013 , F02D23/00 , F02D41/0007 , Y02T10/144
摘要： A turbocharger control method includes: determining a first desired pressure ratio across a first compressor of a first turbocharger; based on the first desired pressure ratio, determining a first desired duty cycle for a first wastegate of the first turbocharger; determining a second desired pressure ratio across a second compressor of a second turbocharger based on the first desired pressure ratio; based on the second desired pressure ratio, determining a second desired duty cycle for a second wastegate of the second turbocharger; generating a first target duty cycle for the first wastegate based on the first desired duty cycle; opening the first wastegate based on the first target duty cycle; generating a second target duty cycle for the second wastegate based on the second desired duty cycle; and opening the second wastegate based on the second target duty cycle.
摘要翻译： 涡轮增压器控制方法包括：通过第一涡轮增压器的第一压缩机确定第一期望压力比; 基于所述第一期望压力比，确定所述第一涡轮增压器的第一废气门的第一期望占空比; 基于所述第一期望压力比确定第二涡轮增压器的第二压缩机的第二期望压力比; 基于第二所需压力比，确定第二涡轮增压器的第二废气门的第二期望占空比; 基于所述第一期望占空比为所述第一废气门产生第一目标占空比; 根据第一个目标工作周期开启第一个废气门; 基于所述第二期望占空比为所述第二废气门产生第二目标占空比; 并根据第二个目标工作周期打开第二个废气门。
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