专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5899062A Catalyst monitor using arc length ratio of pre- and post-catalyst sensor signals 失效
标题翻译：催化剂监测器使用催化前和催化剂传感器信号的电弧长度比
公开(公告)号：US5899062A
公开(公告)日：1999-05-04
申请号：US785406
申请日：1997-01-22
申请人： Robert Joseph Jerger , Christopher Kirk Davey , Michael I. Kluzner , David R. Nader
发明人： Robert Joseph Jerger , Christopher Kirk Davey , Michael I. Kluzner , David R. Nader
IPC分类号： F01N11/00 , F01N3/20
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A method and system for monitoring the efficiency of a catalytic converter include determining a ratio of signal arc lengths from an upstream exhaust gas sensor and a downstream exhaust gas sensor which generate signals indicative of oxygen content in the exhaust upstream and downstream, respectively, relative to the converter. A controller processes the signals to determine the ratio of the arc length of the rear or downstream sensor signal to the arc length of the front or upstream sensor signal over a test period. The arc length is calculated by summing over the test period a series of incremental arc lengths for each incremental time interval in the test period. An incremental signal length may be calculated using the square root of the sum of the square of the change in value of a signal during an incremental time interval and the square of the duration of the incremental time interval. The ratio is indicative of the efficiency of the converter which may be compared with subsequently generated ratios to monitor converter efficiency over time.
摘要翻译：用于监测催化转化器的效率的方法和系统包括确定来自上游废气传感器和下游排气传感器的信号电弧长度的比率，其分别产生指示排气上游和下游的氧含量的信号，相对于转换器。控制器处理信号以确定在测试周期中后传感器信号与下游传感器信号的电弧长度与前传感器信号或上游传感器信号的电弧长度之比。通过在测试周期内对每个测试周期中每个增量时间间隔的一系列增量弧长进行求和来计算电弧长度。增量信号长度可以使用增量时间间隔内的信号值的平方和的平方和与增量时间间隔的持续时间的平方的平方根来计算。该比率表示转换器的效率，其可以与随后产生的比率进行比较，以随时间监视转换器效率。

2. 发明授权

US6112518A System and method for monitoring a catalytic converter 有权
标题翻译：用于监测催化转化器的系统和方法
公开(公告)号：US6112518A
公开(公告)日：2000-09-05
申请号：US340883
申请日：1999-06-28
申请人： Robert Joseph Jerger , Christopher Kirk Davey , Michael I. Kluzner , Donald Fenwick Dickison
发明人： Robert Joseph Jerger , Christopher Kirk Davey , Michael I. Kluzner , Donald Fenwick Dickison
IPC分类号： F01N11/00 , F02D41/14 , F02M25/07 , F01N3/00
CPC分类号： F02D41/1446 , F01N11/002 , F01N11/007 , F02D41/1441 , F02D41/1474 , F01N2550/02 , F01N2900/0421 , F02D2200/0804 , F02D41/0047 , Y02T10/47
摘要： A system and method for monitoring catalytic converter efficiency monitor the switch ratio of upstream and downstream exhaust gas oxygen sensors based on an acceptable temperature range of the catalytic converter. In one embodiment, catalytic converter temperature is determined based on exhaust gas temperature. The exhaust gas temperature may be used to infer the temperature of the catalytic converter mid-bed. The efficiency may be determined based on a correspondence with a number of mass air flow ranges. The system and method may also use vehicle speed and EGR to assure that the monitor samples data during repeatable, robust load-speed-temperature conditions. Switch data is stored in keep-alive memory to increase the confidence of the efficiency determination due to a larger data collection phase. A filter having a cycle based constant may be used to filter a current switch ratio before incorporating it into an average switch ratio.
摘要翻译：用于监测催化转化器效率的系统和方法基于催化转化器的可接受温度范围来监测上游和下游排气氧传感器的开关比。在一个实施方案中，催化转化器温度基于废气温度来确定。废气温度可用于推断催化转化器中间床的温度。可以基于与多个质量空气流量范围的对应关系来确定效率。该系统和方法还可以使用车辆速度和EGR来确保监视器在可重复，稳定的负载 - 速度 - 温度条件下采样数据。切换数据存储在保活存储器中，以增加由于较大的数据收集阶段而导致的效率确定的置信度。具有基于循环的常数的滤波器可以用于在将其并入平均开关比之前对电流开关比进行滤波。

3. 发明授权

US5974786A Adaptive time window to synchronize pre- and post-catalyst oxygen sensor switch counters 失效
标题翻译：自适应时间窗口，用于同步催化前和催化后氧传感器开关计数器
公开(公告)号：US5974786A
公开(公告)日：1999-11-02
申请号：US786597
申请日：1997-01-21
申请人： Michael I. Kluzner , Christopher Kirk Davey , David Robert Nader , Robert Joseph Jerger
发明人： Michael I. Kluzner , Christopher Kirk Davey , David Robert Nader , Robert Joseph Jerger
IPC分类号： F01N3/00 , F01N11/00
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A system and method for monitoring efficiency of a catalytic converter count switches of at least one upstream sensor interposed the engine and the converter and count switches of a downstream sensor, interposed the converter and atmosphere, during a definite time period after a switch of the at least one upstream sensor to account for propagation delay of exhaust gases traveling between the at least one upstream and downstream sensor. Upstream sensor switches may optionally be counted only if predetermined entry conditions are satisfied while downstream switches occurring during respective definite time periods after an upstream switch are counted without regard to the entry conditions. A switch ratio based on the number of switches of the at least one upstream sensor and switches of the downstream sensor is used to monitor conversion efficiency of the catalyst. The system and method may include selecting a current air flow range from a plurality of air flow ranges and associating sensor switches and/or switch ratios with corresponding air flow ranges to compensate for the propagation delay. In inferred sensor signal base on dual upstream sensors may be used to trigger the definite time periods and calculate the switch ratio(s).
摘要翻译：一种用于监测催化转化器的效率的系统和方法，其中，所述催化转化器计数开关在介于所述发动机和所述转换器之间的至少一个上游传感器的计数开关以及插入所述转换器和大气的下游传感器的计数开关中，至少一个上游传感器，以解释在所述至少一个上游和下游传感器之间行进的废气的传播延迟。只有在满足预定条件的情况下，上游传感器开关可以被选择性地进行计数，而在上游切换计数之后的各个确定时间段期间发生的下游交换机不考虑进入条件。使用基于至少一个上游传感器的开关数和下游传感器的开关的开关比来监测催化剂的转换效率。系统和方法可以包括从多个空气流量范围中选择当前空气流量范围，并将传感器开关和/或开关比与相应的空气流量范围相关联以补偿传播延迟。在基于双上游传感器的推断传感器信号中，可以用来触发确定的时间段并计算开关比。

4. 发明授权

US5953905A System and method for monitoring a catalytic converter 失效
标题翻译：用于监测催化转化器的系统和方法
公开(公告)号：US5953905A
公开(公告)日：1999-09-21
申请号：US785045
申请日：1997-01-17
申请人： Robert Joseph Jerger , Christopher Kirk Davey , Michael I. Kluzner , Donald Fenwick Dickison
发明人： Robert Joseph Jerger , Christopher Kirk Davey , Michael I. Kluzner , Donald Fenwick Dickison
IPC分类号： F01N11/00 , F02D41/14 , F02M25/07 , F01N3/00
CPC分类号： F02D41/1446 , F01N11/002 , F01N11/007 , F02D41/1441 , F02D41/1474 , F01N2550/02 , F01N2900/0421 , F02D2200/0804 , F02D41/0047 , Y02T10/47
摘要： A system and method for monitoring catalytic converter efficiency monitor the switch ratio of upstream and downstream exhaust gas oxygen sensors based on an acceptable temperature range of the catalytic converter mid-bed for each of a number of mass air flow ranges. The system and method also use vehicle speed and EGR to assure that the monitor samples data during repeatable, robust load-speed-temperature conditions. Switch data is stored in keep-alive memory to increase the confidence of the efficiency determination due to a larger data collection phase. A filter having a cycle based constant is used to filter a current switch ratio before incorporating it into an average switch ratio.
摘要翻译：用于监测催化转化器效率的系统和方法基于用于多个质量空气流量范围中的每一个的催化转化器中间层的可接受的温度范围来监测上游和下游排气氧传感器的开关比。该系统和方法还使用车辆速度和EGR来确保监视器在可重复，稳定的负载 - 速度 - 温度条件下采样数据。切换数据存储在保活存储器中，以增加由于较大的数据收集阶段而导致的效率确定的置信度。在将其并入平均开关比之前，使用具有基于循环的常数的滤波器来滤波电流开关比。

5. 发明授权

US5801295A On-board diagnostic test of oxygen sensor 失效
标题翻译：氧传感器的车载诊断测试
公开(公告)号：US5801295A
公开(公告)日：1998-09-01
申请号：US863221
申请日：1997-05-27
申请人： Christopher Kirk Davey , Anand J. Shah , Donald Fenwick Dickison , David R. Nader , Robert Joseph Jerger , Michael Igor Kluzner
发明人： Christopher Kirk Davey , Anand J. Shah , Donald Fenwick Dickison , David R. Nader , Robert Joseph Jerger , Michael Igor Kluzner
IPC分类号： F02D41/14 , G01M19/00
CPC分类号： F02D41/1495
摘要： An on-board diagnostic test for an exhaust gas oxygen sensor includes sensing the output of the oxygen sensor and summing the output over a specified period to determine the length of the trace of the sensor voltage versus time. Such length over a given time period indicates the activity of the sensor. This data is compared to a threshold to determine if the exhaust gas oxygen sensor meets certain performance requirements.
摘要翻译：用于排气氧传感器的车载诊断测试包括感测氧传感器的输出并在指定时间段内对输出进行求和以确定传感器电压与时间的迹线长度。在给定时间段内的这种长度表示传感器的活动。将该数据与阈值进行比较，以确定废气氧传感器是否满足某些性能要求。

6. 发明授权

US6018944A System and method for monitoring a catalytic converter using adaptable indicator threshold 失效
标题翻译：使用适应性指标阈值监测催化转化器的系统和方法
公开(公告)号：US6018944A
公开(公告)日：2000-02-01
申请号：US174179
申请日：1998-10-16
申请人： Christopher Kirk Davey , Robert Joseph Jerger
发明人： Christopher Kirk Davey , Robert Joseph Jerger
IPC分类号： F01N11/00 , F01N3/00
CPC分类号： F01N11/007 , F01N11/002 , F01N2550/02 , F01N2900/0402 , F01N2900/0421 , Y02T10/47
摘要： A system and method for monitoring emissions by monitoring performance of a catalytic converter using a predetermined indicated threshold value include determining a current value for the indicator based on signals generated by at least one exhaust gas sensor, modifying a historical indicator value based on the current value, and adjusting the predetermined indicator threshold based on the historical indicator value. The predetermined indicator threshold is adjusted provided various adapt criteria are satisfied. The historical indicator value is compared to the threshold to determine whether to generate a malfunction indicator signal. In one embodiment, emissions are indicated using a switch ratio based on the number of switches or transitions for upstream and downstream exhaust gas oxygen sensors.
摘要翻译：通过使用预定指示的阈值监测催化转化器的性能来监测排放的系统和方法包括基于由至少一个废气传感器产生的信号确定指示器的当前值，基于当前值修改历史指标值并且基于历史指标值调整预定指示符阈值。通过满足各种适应标准来调整预定的指标阈值。将历史指标值与阈值进行比较，以确定是否生成故障指示符信号。在一个实施例中，使用基于上游和下游排气氧传感器的开关数或转换次数的开关比来指示排放。

7. 发明授权

US06401452B1 Catalytic monitoring method 失效
标题翻译：催化监测方法
公开(公告)号：US06401452B1
公开(公告)日：2002-06-11
申请号：US09648055
申请日：2000-08-25
申请人： Christopher Kirk Davey , Robert Joseph Jerger , David Robert Nader , Michael Igor Kluzner
发明人： Christopher Kirk Davey , Robert Joseph Jerger , David Robert Nader , Michael Igor Kluzner
IPC分类号： F01N300
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0421 , Y02T10/47
摘要： A catalytic monitoring method for an engine having two engine banks of which each coupled to one of two catalytic converters using first and second exhaust gas oxygen sensors respectively, upstream and downstream of one catalytic converter. Third and fourth exhaust gas oxygen sensors are respectively coupled upstream and downstream of the other catalytic converter. Switch ratios are determined for each of the engine banks based on the switching ratios of each upstream and downstream pair of exhaust gas oxygen sensors. A combination of the switch ratios is used to determine overall catalytic converter system performance.
摘要翻译：一种用于具有两个发动机组的发动机的催化监测方法，每个发动机组分别与使用第一和第二排气氧传感器的两个催化转化器中的一个分别耦合到一个催化转化器的上游和下游。第三和第四废气氧传感器分别耦合在另一个催化转化器的上游和下游。基于每个上游和下游对排气氧传感器的切换比，确定每个发动机组的开关比。使用开关比的组合来确定总体催化转化器系统性能。

8. 发明授权

US06195986B1 Method and system for monitoring a catalytic converter 失效
标题翻译：用于监测催化转化器的方法和系统
公开(公告)号：US06195986B1
公开(公告)日：2001-03-06
申请号：US09337389
申请日：1999-06-21
申请人： Christopher Kirk Davey , David Robert Nader , Michael Igor Kluzner , Robert Joseph Jerger
发明人： Christopher Kirk Davey , David Robert Nader , Michael Igor Kluzner , Robert Joseph Jerger
IPC分类号： F01N300
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A method of detecting catalytic converter deterioration based on the ratio of the arc length or the number of transitions of signals from sensors upstream and downstream of the converter where ratio determination is restricted to predefined air mass ranges within corresponding predefined engine speed/load ranges in order to avoid areas of engine speed and load instability that might impair test to test repeatability of the deterioration detection.
摘要翻译：根据电弧长度或转换器上下游传感器信号的转换次数来检测催化转化器劣化的方法，其中比率确定被限制在相应的预定发动机转速/负载范围内的预定空气质量范围内以避免发动机转速和负载不稳定的区域，这可能会损害测试以测试劣化检测的可重复性。

9. 发明授权

US5865026A System and method for monitoring a catalytic converter using adaptable indicator threshold 失效
公开(公告)号：US5865026A
公开(公告)日：1999-02-02
申请号：US786493
申请日：1997-01-21
申请人： Christopher Kirk Davey , Robert Joseph Jerger
发明人： Christopher Kirk Davey , Robert Joseph Jerger
IPC分类号： F01N11/00 , F01N3/00
CPC分类号： F01N11/007 , F01N11/002 , F01N2550/02 , F01N2900/0402 , F01N2900/0421 , Y02T10/47
摘要： A system and method for monitoring emissions by monitoring performance of a catalytic converter using a predetermined indicated threshold value include determining a current value for the indicator based on signals generated by at least one exhaust gas sensor, modifying a historical indicator value based on the current value, and adjusting the predetermined indicator threshold based on the historical indicator value. The predetermined indicator threshold is adjusted provided various adapt criteria are satisfied. The historical indicator value is compared to the threshold to determine whether to generate a malfunction indicator signal. In one embodiment, emissions are indicated using a switch ratio based on the number of switches or transitions for upstream and downstream exhaust gas oxygen sensors.

10. 发明授权

US6138452A Catalytic monitoring method 有权
标题翻译：催化监测方法
公开(公告)号：US6138452A
公开(公告)日：2000-10-31
申请号：US263457
申请日：1999-03-05
申请人： Christopher Kirk Davey , Michael Igor Kluzner , Robert Roy Jentz , Robert Joseph Jerger
发明人： Christopher Kirk Davey , Michael Igor Kluzner , Robert Roy Jentz , Robert Joseph Jerger
IPC分类号： F01N11/00 , F01N13/04 , F01N13/10 , F02D41/14 , F01N3/00
CPC分类号： F02D41/1443 , F01N11/007 , F01N13/011 , F01N13/107 , F01N2550/02 , F01N2900/0421 , F02D41/1456 , Y02T10/47
摘要： An adaptive catalytic monitoring method for an engine having two engine banks each coupled to one of two catalytic converters uses first and second exhaust gas oxygen sensors respectively upstream and downstream of one catalytic converter. Third and fourth exhaust gas oxygen sensors are respectively coupled upstream and downstream of the other catalytic converter. Switch ratios are determined for each of the engine banks based the switching ratios of each upstream and downstream pair of exhaust gas oxygen sensors, with the switch ratio being adjusted by an adjustment gain that is a function of airflow and a catalytic converter characteristic. A combination of the adjusted switch ratios is used to determine overall catalytic converter system performance.
摘要翻译：一种用于具有两个发动机组的发动机的适应性催化监测方法，每个发动机组分别耦合到两个催化转化器中的一个，分别使用分别在一个催化转化器的上游和下游的第一和第二排气氧传感器。第三和第四废气氧传感器分别耦合在另一个催化转化器的上游和下游。基于每个上游和下游排气氧传感器对的切换比，确定每个发动机组的开关比，其中开关比通过作为气流和催化转化器特性的调节增益来调节。使用调整后的开关比的组合来确定总体催化转化器系统性能。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式