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1. 发明授权

US06912842B2 Oxygen storage capacity estimation 有权
标题翻译：储氧容量估算
公开(公告)号：US06912842B2
公开(公告)日：2005-07-05
申请号：US09884752
申请日：2001-06-19
申请人： David Karl Bidner , Grant Alan Ingram , Gopichandra Surnilla
发明人： David Karl Bidner , Grant Alan Ingram , Gopichandra Surnilla
IPC分类号： F01N11/00 , F02D41/08 , F02D41/14 , F02D41/32 , F01N3/00
CPC分类号： F02D41/1463 , F01N11/007 , F01N2550/02 , F01N2570/16 , F02D41/08 , F02D41/1441 , F02D41/1456 , F02D41/146 , F02D41/1474 , F02D41/187 , F02D41/32 , F02D2200/0404 , F02D2200/0406 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： A more precise method for determining the oxygen storage capacity of an exhaust gas aftertreatment device is presented. The most accurate capacity estimate is obtained while the engine is idling or during low load operation. The capacity is determined by integrating the output of an oxygen sensor located downstream of the device during a period of time that it takes to store more than a predetermined amount of oxygen in the device. The overall LNT efficiency can then be inferred from its oxygen storage capacity. This method allows for improved emission control and fuel economy.
摘要翻译：提出了一种用于确定废气后处理装置的储氧能力的更精确的方法。当发动机空转或低负载运行时，可以获得最准确的容量估计值。通过在设备下游存储氧气传感器的输出的一段时间内积分装置中存储超过预定量的氧气来确定容量。然后可以从其储氧能力推断总体LNT效率。这种方法可以改善排放控制和燃油经济性。

2. 发明授权

US06418711B1 Method and apparatus for estimating lean NOx trap capacity 失效
标题翻译：用于估计贫NOx捕集能力的方法和装置
公开(公告)号：US06418711B1
公开(公告)日：2002-07-16
申请号：US09649783
申请日：2000-08-29
申请人： Gopichandra Surnilla , David Karl Bidner , Grant Alan Ingram
发明人： Gopichandra Surnilla , David Karl Bidner , Grant Alan Ingram
IPC分类号： F01N300
CPC分类号： F01N3/0864 , F01N3/0842 , F01N3/0885 , F01N11/00 , F01N11/007 , F01N13/0097 , F01N2550/03 , F01N2570/04 , F01N2570/16 , F02D41/028 , F02D2200/0808 , F02D2200/0816 , Y02T10/24 , Y02T10/47
摘要： A method and apparatus for determining the capacity of a trap to store NOx based on the change in oxygen storage in the trap occurring as a result of sulfation of the trap.
摘要翻译：一种用于根据捕集器的硫酸化结果产生的捕集阱中氧储存的变化来确定捕集阱储存NOx的容量的方法和装置。

3. 发明授权

US06591604B2 Oxygen storage capacity estimation 失效
标题翻译：储氧容量估算
公开(公告)号：US06591604B2
公开(公告)日：2003-07-15
申请号：US09884592
申请日：2001-06-19
申请人： Gopichandra Surnilla , Grant Alan Ingram
发明人： Gopichandra Surnilla , Grant Alan Ingram
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N11/007 , F01N2550/02 , F01N2570/04 , F01N2570/14 , Y02A50/2324 , Y02T10/22 , Y02T10/47
摘要： An improved method for monitoring an efficiency of a three-way catalyst coupled in an exhaust passage of an internal combustion engine is presented. First, a reference efficiency estimate (shortly after a SOx purge) is generated based on several data points obtained during normal vehicle driving conditions over varying device temperatures. Next, a current efficiency estimate is obtained from several data points. The two estimates are compared to obtain a measure of reduction in the catalyst efficiency due to device sulfation.
摘要翻译：提出了一种用于监测联接在内燃机的排气通道中的三元催化剂的效率的改进方法。首先，基于在正常车辆驾驶条件下在变化的装置温度下获得的几个数据点来生成参考效率估计（在SOx吹扫之后不久）。接下来，从几个数据点获得电流效率估计。比较两个估计值以获得由于装置硫酸化引起的催化剂效率降低的量度。

4. 发明授权

US06574953B1 NOx purge air/fuel ratio selection 有权
标题翻译： NOx净化空气/燃料比选择
公开(公告)号：US06574953B1
公开(公告)日：2003-06-10
申请号：US10012577
申请日：2001-11-29
申请人： Grant Alan Ingram , Gopichandra Surnilla , Jeffrey Scott Hepburn , John M. Roth , Joseph Robert Theis
发明人： Grant Alan Ingram , Gopichandra Surnilla , Jeffrey Scott Hepburn , John M. Roth , Joseph Robert Theis
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/05 , F01N3/0814 , F01N3/0871 , F01N13/009 , F01N2240/02 , F01N2430/06 , F01N2430/08 , F01N2570/14 , F02D41/0275 , F02D41/1441 , F02D41/1456 , F02D2011/102 , F02D2041/0265 , F02D2200/0406 , Y02A50/2344 , Y02T10/22 , Y02T10/24
摘要： A method for improving a purge conversion efficiency of a Lean NOx Trap coupled downstream of a lean-burn internal combustion engine is presented. This method recognizes that during a purge of the LNT, its temperature increases due to the exothermic reactions in the LNT. Once the LNT temperature exceeds a certain threshold, further increases lead to a reduction in the NOx storage capacity, and therefore an increase in NOx emissions during the purge of the LNT. Therefore, it is proposed to cool the LNT temperature once the threshold is exceeded. This method improves emission control and fuel economy during purge.
摘要翻译：提出了一种用于提高在稀燃内燃机下游耦合的精益NOx捕集阱的净化转换效率的方法。该方法认识到，在LNT的吹扫期间，其温度由于LNT中的放热反应而增加。一旦LNT温度超过某一阈值，进一步的增加导致NOx储存容量的降低，并因此导致在清洗LNT期间NOx排放的增加。因此，建议在超过阈值后冷却LNT温度。这种方法可以改善排放控制和清洁过程中的燃油经济性。

5. 发明授权

US06553757B1 NOx purge air/fuel ratio selection 有权
标题翻译： NOx净化空气/燃料比选择
公开(公告)号：US06553757B1
公开(公告)日：2003-04-29
申请号：US09992257
申请日：2001-11-19
申请人： Gopichandra Surnilla , Grant Alan Ingram
发明人： Gopichandra Surnilla , Grant Alan Ingram
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N2430/06 , F02D41/0275 , F02D41/1441 , F02D41/1456 , F02D41/1463 , F02D41/187 , F02D2200/0404 , F02D2200/0406 , F02D2200/0804 , Y02T10/24
摘要： A method for improving a purge conversion efficiency of a Lean NOx Trap coupled downstream of a lean-burn internal combustion engine is presented. This method proposes adjusting the purge air-fuel ratio of the device based on its temperature. According to the proposed method, a less rich air-fuel ratio is provided at lower operating temperatures to reduce hydrocarbon emissions since within this temperature range air-fuel ratio does not have a significant affect on NOx emissions. At mid-range operating temperatures, the air-fuel ratio is gradually decreased (made more rich) to reduce NOx emissions. And, finally, at high operating temperatures, HC and NOx emissions are reduced, and therefore, the purge air-fuel is kept at a constant more rich value. This method improves emission control and fuel economy during purge.
摘要翻译：提出了一种用于提高在稀燃内燃机下游耦合的精益NOx捕集阱的净化转换效率的方法。该方法建议基于其温度来调节装置的吹扫空燃比。根据所提出的方法，在较低的操作温度下提供较不丰富的空燃比以减少碳氢化合物排放，因为在该温度范围内，空燃比对NOx排放没有显着影响。在中等工作温度下，空燃比逐渐下降（更丰富），以减少NOx排放。最后，在高运行温度下，HC和NOx的排放量减少，因此，净化空气燃料保持在更加丰富的恒定值。这种方法可以改善排放控制和清洁过程中的燃油经济性。

6. 发明授权

US06874312B2 Oxidant storage capacity estimation 有权
标题翻译：氧化剂存储容量估算
公开(公告)号：US06874312B2
公开(公告)日：2005-04-05
申请号：US10281927
申请日：2002-10-28
申请人： Grant Alan Ingram , Gopichandra Surnilla
发明人： Grant Alan Ingram , Gopichandra Surnilla
IPC分类号： F01N3/08 , F01N11/00 , F02D41/02 , F01N3/00
CPC分类号： F01N3/0842 , F01N3/0871 , F01N11/007 , F01N2550/03 , F02D41/0275 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： A method for determining the efficiency of a three-way catalyst is presented. It is shown that more accurate results are achieved if the efficiency estimates are performed when the engine is at idle or during low load operating conditions. The efficiency is inferred from the amount of fuel required to purge the device after it has been fully saturated with oxidants due to lean operation. Due to improved accuracy and reduced reductant waste, this method allows for improved emission control and fuel efficiency.
摘要翻译：提出了一种确定三元催化剂效率的方法。如果在发动机处于空转状态或在低负载运行条件下执行效率估计，则可以获得更准确的结果。效率来自于由于精馏操作已经被氧化剂完全饱和之后吹扫装置所需的燃料量。由于精度提高和还原剂废物减少，这种方法可以改善排放控制和燃油效率。

7. 发明授权

US06622476B2 Lean NOx storage estimation based on oxygen concentration corrected for water gas shift reaction 失效
公开(公告)号：US06622476B2
公开(公告)日：2003-09-23
申请号：US10016942
申请日：2001-12-14
申请人： Gopichandra Surnilla , Grant Alan Ingram
发明人： Gopichandra Surnilla , Grant Alan Ingram
IPC分类号： F01N300
CPC分类号： F01N3/0814 , F01N3/0842 , F01N13/009 , F01N2550/03 , F01N2570/14 , F02D41/0275 , F02D41/1441 , F02D41/1456 , F02D41/1458 , F02D2200/0806 , Y02A50/2344 , Y02T10/24
摘要： A method for estimating the amount of NOx stored in a lean NOx trap. The method includes determining a change in the oxygen concentration between an exhaust air/fuel ratio entering the lean NOx trap and exiting the lean NOx trap to determine the amount of NOx absorbed in the trap and correcting such determination for water gas shift reaction effects in such change in oxygen concentration determination.

8. 发明授权

US06594986B2 Oxidant storage capacity estimation 有权
标题翻译：氧化剂存储容量估算
公开(公告)号：US06594986B2
公开(公告)日：2003-07-22
申请号：US09884765
申请日：2001-06-19
申请人： Grant Alan Ingram , Gopichandra Surnilla
发明人： Grant Alan Ingram , Gopichandra Surnilla
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0871 , F01N11/007 , F01N2550/03 , F02D41/0275 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： A method for determining the efficiency of a three-way catalyst is presented. It is shown that more accurate results are achieved if the efficiency estimates are performed when the engine is at idle or during low load operating conditions. The efficiency is inferred from the amount of fuel required to purge the device after it has been fully saturated with oxidants due to lean operation. Due to improved accuracy and reduced reductant waste, this method allows for improved emission control and fuel efficiency.
摘要翻译：提出了一种确定三元催化剂效率的方法。如果在发动机处于空转状态或在低负载运行条件下执行效率估计，则可以获得更准确的结果。效率来自于由于精馏操作已经被氧化剂完全饱和之后吹扫装置所需的燃料量。由于精度提高和还原剂废物减少，这种方法可以改善排放控制和燃油效率。

9. 发明授权

US06594985B2 Exhaust gas aftertreatment device efficiency estimation 失效
标题翻译：废气后处理装置效率估算
公开(公告)号：US06594985B2
公开(公告)日：2003-07-22
申请号：US09884338
申请日：2001-06-19
申请人： Gopichandra Surnilla , Grant Alan Ingram
发明人： Gopichandra Surnilla , Grant Alan Ingram
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N11/00 , F01N11/007 , F01N2550/03 , F01N2570/16 , F02D37/02 , F02D41/0275 , F02D41/1441 , F02D41/1452 , F02D41/1456 , F02D41/1459 , F02D41/146 , F02D41/1462 , F02D41/1476 , F02D41/187 , F02D2200/0806 , F02P7/07 , Y02T10/22 , Y02T10/47
摘要： A method for monitoring efficiency of an exhaust gas aftertreatment device is presented. The efficiency is inferred from the amount of fuel required to perform purge of the device after it has been saturated with exhaust gas components such as NOx and oxygen to a predetermined level. The level of saturation is determined from the amount of tailpipe emissions as indicated by the tailpipe exhaust gas sensor. This method improves precision in determining device efficiency and therefore eliminates unnecessary sulfur purges and improves fuel economy. Also, better emission control is achieved since the tailpipe exhaust gas sensor allows closed loop monitoring of NOx emissions and prevents the device from overfilling.
摘要翻译：提出了一种用于监测废气后处理装置的效率的方法。效率是由装置在将NOx和氧气等废气组分饱和至预定水平后进行吹扫所需的燃料量推断出的。由尾管排气传感器指示的排气管排放量确定饱和度。该方法提高了确定装置效率的精度，因此消除了不必要的硫清洗并提高燃料经济性。此外，由于尾气排气传感器允许对NOx排放进行闭环监测并防止设备过度填充，因此实现更好的排放控制。

10. 发明授权

US06588200B1 Method for correcting an exhaust gas oxygen sensor 失效
标题翻译：废气氧传感器校正方法
公开(公告)号：US06588200B1
公开(公告)日：2003-07-08
申请号：US09783351
申请日：2001-02-14
申请人： Gopichandra Surnilla , Grant Alan Ingram
发明人： Gopichandra Surnilla , Grant Alan Ingram
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N13/009 , F01N2550/03 , F01N2570/14 , F02D41/0275 , F02D41/1441 , F02D41/1456 , F02D41/1458 , F02D2200/0806
摘要： An engine air/fuel controller is responsive to an exhaust gas oxygen sensor positioned upstream of a catalytic converter and a proportional exhaust gas oxygen sensor positioned downstream of the catalytic converter. An air/fuel ratio signal provided by the downstream exhaust gas oxygen sensor is adjusted by a correction bias value. A first preferred method of deriving the correction bias value includes calculating the difference between the average of the upstream and downstream air/fuel ratios when the upstream sensor indicates lean operation of the engine. The second preferred method includes deriving the correction bias according a pre-determined and pre-programmed correction bias function, which provides correction bias values as a function of the of the air/fuel ratio measured by the downstream sensor.
摘要翻译：发动机空气/燃料控制器响应位于催化转化器上游的排气氧传感器和位于催化转化器下游的比例排气氧传感器。由下游废气氧传感器提供的空气/燃料比信号通过校正偏置值进行调整。导出校正偏置值的第一优选方法包括计算当上游传感器指示发动机的稀薄运行时上游和下游空气/燃料比的平均值之间的差。第二优选方法包括根据预定和预编程的校正偏置函数导出校正偏置，其提供作为由下游传感器测量的空气/燃料比的函数的校正偏置值。

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