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1.发明申请SYSTEM AND METHOD FOR MONITORING CATALYST EFFICIENCY AND POST-CATALYST OXYGEN SENSOR PERFORMANCE 有权用于监测催化剂效率和催化剂氧传感器性能的系统和方法公开(公告)号：US20110120095A1
公开(公告)日：2011-05-26
申请号：US12623013
申请日：2009-11-20
CPC分类号： F01N11/00 , F01N3/10 , F01N2430/06 , F01N2560/025 , F01N2900/1621 , Y02T10/47
摘要： A diagnostic system for an exhaust system of an engine includes a fuel control module and a diagnostic module. The fuel control module, in response to a request for a fuel inhibiting event, operates the engine in a first rich condition for a first period until a catalytic converter of the exhaust system is in a predetermined first rich state and subsequently operates the engine in a lean condition for a second period contiguous with the first period. The diagnostic module determines a catalyst efficiency of the catalytic converter based on an output of an oxygen sensor located downstream of said catalytic converter during the second period, and selectively adjusts a diagnostic status of the catalytic converter based on a comparison of the catalyst efficiency and a predetermined catalyst efficiency. The fuel inhibiting event may be a deceleration fuel-cutoff event. A related diagnostic method is also provided.
摘要翻译： 用于发动机排气系统的诊断系统包括燃料控制模块和诊断模块。 燃料控制模块响应于对燃料抑制事件的请求，在第一浓缩状态下操作发动机持续第一时间段，直到排气系统的催化转化器处于预定的第一富集状态并随后将发动机运行在 贫困状况与第一个周期相邻的第二个时期。 诊断模块基于在第二时段期间位于所述催化转化器下游的氧传感器的输出来确定催化转化器的催化剂效率，并且基于催化剂效率和催化剂效率的比较来选择性地调节催化转化器的诊断状态 预定的催化剂效率。 燃料抑制事件可以是减速燃料切断事件。 还提供了相关的诊断方法。
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2.发明授权System and method for monitoring catalyst efficiency and post-catalyst oxygen sensor performance 有权用于监测催化剂效率和催化后氧传感器性能的系统和方法公开(公告)号：US08516796B2
公开(公告)日：2013-08-27
申请号：US12623013
申请日：2009-11-20
IPC分类号： F01N11/00
CPC分类号： F01N11/00 , F01N3/10 , F01N2430/06 , F01N2560/025 , F01N2900/1621 , Y02T10/47
摘要： A diagnostic system for an exhaust system of an engine includes a fuel control module and a diagnostic module. The fuel control module, in response to a request for a fuel inhibiting event, operates the engine in a first rich condition for a first period until a catalytic converter of the exhaust system is in a predetermined first rich state and subsequently operates the engine in a lean condition for a second period contiguous with the first period. The diagnostic module determines a catalyst efficiency of the catalytic converter based on an output of an oxygen sensor located downstream of said catalytic converter during the second period, and selectively adjusts a diagnostic status of the catalytic converter based on a comparison of the catalyst efficiency and a predetermined catalyst efficiency. The fuel inhibiting event may be a deceleration fuel-cutoff event. A related diagnostic method is also provided.
摘要翻译： 用于发动机排气系统的诊断系统包括燃料控制模块和诊断模块。 燃料控制模块响应于燃料抑制事件的请求，在第一浓缩状态下操作发动机持续第一时间段，直到排气系统的催化转化器处于预定的第一富集状态，并随后将发动机运行在 贫困状况与第一个周期相邻的第二个时期。 诊断模块基于在第二时段期间位于所述催化转化器下游的氧传感器的输出来确定催化转化器的催化剂效率，并且基于催化剂效率和催化剂效率的比较来选择性地调节催化转化器的诊断状态 预定的催化剂效率。 燃料抑制事件可以是减速燃料切断事件。 还提供了相关的诊断方法。
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公开(公告)号：US07900439B2
公开(公告)日：2011-03-08
申请号：US11811451
申请日：2007-06-08
申请人： Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
发明人： Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
IPC分类号： F01N3/00
CPC分类号： F01N9/00 , F01N2570/16 , Y02T10/47
摘要： A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.
摘要翻译： 提供了一种用于包括催化剂和催化后氧传感器的排气系统的诊断系统。 该系统通常包括燃料控制模块，其指示燃料从富状态转换到稀薄状态，并且指令燃料从稀薄状态转换到富状态。 第一个诊断模块在从富状态转移到稀薄条件期间监测催化后氧传感器。 第二个诊断模块监测催化剂在从贫态到富状态的过渡期间。
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公开(公告)号：US20080302087A1
公开(公告)日：2008-12-11
申请号：US11811451
申请日：2007-06-08
申请人： Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
发明人： Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
IPC分类号： F01N7/00
CPC分类号： F01N9/00 , F01N2570/16 , Y02T10/47
摘要： A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.
摘要翻译： 提供了一种用于包括催化剂和催化后氧传感器的排气系统的诊断系统。 该系统通常包括燃料控制模块，其指示燃料从富状态转换到稀薄状态，并且指令燃料从稀薄状态转换到富状态。 第一个诊断模块在从富状态转移到稀薄条件期间监测催化后氧传感器。 第二个诊断模块监测催化剂在从贫态到富状态的过渡期间。
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公开(公告)号：US20100175664A1
公开(公告)日：2010-07-15
申请号：US12353636
申请日：2009-01-14
IPC分类号： F02P5/04
CPC分类号： F02P5/1506 , F02D41/0205 , F02D41/0255 , F02D2200/021 , F02P17/02 , Y02T10/26 , Y02T10/46
摘要： An engine control module includes a spark control module, an engine speed module, a residual determination module, and a metric determination module. The spark control module actuates spark plugs based on a commanded spark timing. The engine speed module determines a desired engine speed based on an engine temperature and a period of time an engine is in operation after a cold start. The residual determination module determines a desired spark timing based on the desired engine speed, and determines a residual spark timing based on a difference between the commanded spark timing and the desired spark timing. The metric determination module detects a spark timing fault based on the residual spark timing and a predetermined spark timing range.
摘要翻译： 发动机控制模块包括火花控制模块，发动机转速模块，残余确定模块和度量确定模块。 火花控制模块根据指令的火花定时启动火花塞。 发动机速度模块基于发动机温度和冷启动后发动机运行的时间段来确定期望的发动机转速。 剩余确定模块基于期望的发动机转速确定期望的火花正时，并且基于所指示的火花正时和期望的火花正时之间的差来确定剩余火花正时。 度量确定模块基于剩余火花正时和预定的火花定时范围来检测火花正时故障。
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公开(公告)号：US08127744B2
公开(公告)日：2012-03-06
申请号：US12353636
申请日：2009-01-14
CPC分类号： F02P5/1506 , F02D41/0205 , F02D41/0255 , F02D2200/021 , F02P17/02 , Y02T10/26 , Y02T10/46
摘要： An engine control module includes a spark control module, an engine speed module, a residual determination module, and a metric determination module. The spark control module actuates spark plugs based on a commanded spark timing. The engine speed module determines a desired engine speed based on an engine temperature and a period of time an engine is in operation after a cold start. The residual determination module determines a desired spark timing based on the desired engine speed, and determines a residual spark timing based on a difference between the commanded spark timing and the desired spark timing. The metric determination module detects a spark timing fault based on the residual spark timing and a predetermined spark timing range.
摘要翻译： 发动机控制模块包括火花控制模块，发动机转速模块，残余确定模块和度量确定模块。 火花控制模块根据指令的火花定时启动火花塞。 发动机速度模块基于发动机温度和冷启动后发动机运行的时间段来确定期望的发动机转速。 剩余确定模块基于期望的发动机转速确定期望的火花正时，并且基于所指示的火花正时和期望的火花正时之间的差来确定剩余火花正时。 度量确定模块基于剩余火花正时和预定的火花定时范围来检测火花正时故障。
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公开(公告)号：US20090241899A1
公开(公告)日：2009-10-01
申请号：US12334778
申请日：2008-12-15
申请人： Christopher E. Whitney , Robert J. Genslak , Edward Stuteville , Cheryl A. Williams , Robert C. Simon, JR.
发明人： Christopher E. Whitney , Robert J. Genslak , Edward Stuteville , Cheryl A. Williams , Robert C. Simon, JR.
CPC分类号： F02D41/10 , F02D37/02 , F02D41/0002 , F02D41/1475 , F02D2250/22 , F02P5/1504 , Y02T10/42 , Y02T10/46
摘要： A reserve torque system comprises a first module and a reserve torque module. The first module generates a first signal a predetermined period before an equivalence ratio (EQR) of an air/fuel mixture supplied to an engine is transitioned from a non-lean EQR to a lean EQR. The reserve torque module creates a reserve torque between when the first signal is generated and when the EQR is transitioned to the lean EQR.
摘要翻译： 备用扭矩系统包括第一模块和备用扭矩模块。 在第一模块在提供给发动机的空气/燃料混合物的等效比（EQR）从非稀薄EQR转变为稀薄EQR之前，预定的时间段产生第一信号。 备用扭矩模块在产生第一个信号和当EQR转换到稀疏EQR之间时产生一个备用扭矩。
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公开(公告)号：US09599006B2
公开(公告)日：2017-03-21
申请号：US13221135
申请日：2011-08-30
CPC分类号： F01N11/007 , F01N3/101 , F01N2550/02 , F02D41/0295 , F02D41/1441 , F02D41/1456 , F02D41/22 , F02D2200/0816 , Y02A50/2324 , Y02T10/22 , Y02T10/47
摘要： A system for a vehicle includes an oxygen storage capacity (OSC) determination module, a delay determination module, a correction module, and a fault detection module. The OSC determination module determines an OSC period of a catalyst of an exhaust system based on first and second amounts of oxygen measured using first and second oxygen sensors located upstream and downstream of the catalyst, respectively. The delay determination module determines a delay period of the second oxygen sensor. The correction module sets a corrected OSC period for the catalyst based on a difference between the OSC period and the delay period. The fault detection module selectively indicates that a fault is present in the catalyst based on the corrected OSC period.
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公开(公告)号：US08364376B2
公开(公告)日：2013-01-29
申请号：US12394716
申请日：2009-02-27
申请人： Lan Wang , Robert J. Genslak , Wenbo Wang , Matthew Squire , Jinchun Peng , Edward Stuteville , Kurt D. McLain
发明人： Lan Wang , Robert J. Genslak , Wenbo Wang , Matthew Squire , Jinchun Peng , Edward Stuteville , Kurt D. McLain
CPC分类号： F02D41/0255 , F02D41/1447 , F02D41/18 , F02D2200/0414 , F02D2200/0802 , Y02T10/26
摘要： A control system for an engine having a catalytic converter includes an energy calculation module that calculates a calculated mass air flow (MAF) of intake air of the engine based on a requested torque and a requested spark timing that correspond to a desired thermal energy of exhaust of the engine, and that determines an expected thermal energy of the exhaust based on the calculated MAF, and an energy residual module that determines a thermal energy residual of the exhaust based on the expected thermal energy and an estimated thermal energy of the exhaust, wherein the estimated thermal energy is based on a measured MAF of the intake air. The control system includes an energy evaluation module that determines a diagnostic result that indicates whether the catalytic converter is operating within a target temperature range based on the thermal energy residual. Related control methods are also provided.
摘要翻译： 一种用于具有催化转化器的发动机的控制系统，包括能量计算模块，该能量计算模块基于所要求的扭矩和与期望的排气热能相对应的所要求的火花正时来计算发动机的进气的计算质量空气流量（MAF） 并且基于所计算的MAF确定排气的预期热能;以及能量残余模块，其基于预期的热能和所估计的排气的热能来确定排气的热能残余，其中 估计的热能基于进气的测量MAF。 控制系统包括能量评估模块，该能量评估模块基于热能残差确定指示催化转化器是否在目标温度范围内运行的诊断结果。 还提供了相关的控制方法。
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公开(公告)号：US20130054083A1
公开(公告)日：2013-02-28
申请号：US13221135
申请日：2011-08-30
IPC分类号： G01M15/04
CPC分类号： F01N11/007 , F01N3/101 , F01N2550/02 , F02D41/0295 , F02D41/1441 , F02D41/1456 , F02D41/22 , F02D2200/0816 , Y02A50/2324 , Y02T10/22 , Y02T10/47
摘要： A system for a vehicle includes an oxygen storage capacity (OSC) determination module, a delay determination module, a correction module, and a fault detection module. The OSC determination module determines an OSC period of a catalyst of an exhaust system based on first and second amounts of oxygen measured using first and second oxygen sensors located upstream and downstream of the catalyst, respectively. The delay determination module determines a delay period of the second oxygen sensor. The correction module sets a corrected OSC period for the catalyst based on a difference between the OSC period and the delay period. The fault detection module selectively indicates that a fault is present in the catalyst based on the corrected OSC period.
摘要翻译： 一种用于车辆的系统包括储氧容量（OSC）确定模块，延迟确定模块，校正模块和故障检测模块。 OSC确定模块基于分别位于催化剂上游和下游的第一和第二氧传感器测量的第一和第二氧气量来确定排气系统的催化剂的OSC周期。 延迟确定模块确定第二氧传感器的延迟周期。 校正模块基于OSC周期和延迟周期之间的差异来设定催化剂的校正OSC周期。 故障检测模块基于校正的OSC周期选择性地指示催化剂中存在故障。
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