ON BOARD DIAGNOSTIC MONITOR OF NOX CONVERSION EFFICIENCY FOR AFTERTREATMENT DEVICE
    62.
    发明申请
    ON BOARD DIAGNOSTIC MONITOR OF NOX CONVERSION EFFICIENCY FOR AFTERTREATMENT DEVICE 有权
    用于后处理装置的NOX转换效率的板上诊断监视器

    公开(公告)号:US20100043397A1

    公开(公告)日:2010-02-25

    申请号:US12537390

    申请日:2009-08-07

    IPC分类号: F01N11/00

    摘要: A method for indicating a malfunctioning catalyst in a powertrain including an internal combustion engine and an aftertreatment system including an aftertreatment device utilizing a catalyst to convert NOx includes monitoring a NOx content entering the aftertreatment system, monitoring a NOx content exiting the aftertreatment system, determining an actual conversion efficiency based upon the NOx content entering the aftertreatment system and the NOx content exiting the aftertreatment system, monitoring factors affecting conversion efficiency within the aftertreatment device, determining a malfunction conversion efficiency indicative of the malfunctioning catalyst based upon the factors affecting conversion efficiency within the aftertreatment device, and indicating the malfunctioning catalyst based upon comparing the actual conversion efficiency to the malfunction conversion efficiency.

    摘要翻译: 一种用于指示包括内燃机的动力传动系故障催化剂的方法和包括利用催化剂转化NOx的后处理装置的后处理系统的方法,包括监测进入后处理系统的NOx含量,监测离开后处理系统的NOx含量, 基于进入后处理系统的NOx含量和离开后处理系统的NOx含量的实际转换效率,监测影响后处理装置中转换效率的因素,基于影响转换效率的因素确定指示故障催化剂的故障转换效率 后处理装置,并且基于将实际转换效率与故障转换效率进行比较来指示故障催化剂。

    Method and apparatus for estimating exhaust temperature of an internal combustion engine
    64.
    发明申请
    Method and apparatus for estimating exhaust temperature of an internal combustion engine 有权
    用于估计内燃机排气温度的方法和装置

    公开(公告)号:US20080216557A1

    公开(公告)日:2008-09-11

    申请号:US11682377

    申请日:2007-03-06

    IPC分类号: G01N25/00

    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。

    Method and apparatus for controlling engine operation during regeneration of an exhaust aftertreatment system
    65.
    发明申请
    Method and apparatus for controlling engine operation during regeneration of an exhaust aftertreatment system 有权
    用于在排气后处理系统的再生期间控制发动机运转的方法和装置

    公开(公告)号:US20080078167A1

    公开(公告)日:2008-04-03

    申请号:US11536006

    申请日:2006-09-28

    IPC分类号: F01N5/04 F01N3/00 F02D23/00

    CPC分类号: F01N3/00 Y02T10/20

    摘要: There is provided a method and apparatus for controlling operation of an internal combustion engine, comprising controlling engine torque during regeneration of an exhaust aftertreatment system. This comprises controlling post-injection of fuel into a combustion chamber effective to regenerate an exhaust aftertreatment device. Main fuel injection into each combustion chamber and boost are selectively controlled effective to maintain engine output torque.

    摘要翻译: 提供了一种用于控制内燃机的操作的方法和装置,包括在排气后处理系统的再生期间控制发动机扭矩。 这包括将燃料的后喷射控制到有效地再生废气后处理装置的燃烧室中。 主燃料喷射到每个燃烧室和升压被选择性地控制有效地保持发动机输出扭矩。

    Gain/amplitude diagnostics of NOx sensors
    68.
    发明授权
    Gain/amplitude diagnostics of NOx sensors 有权
    NOx传感器的增益/振幅诊断

    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

    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。

    Method and apparatus to determine a cylinder air charge for an internal combustion engine
    69.
    发明授权
    Method and apparatus to determine a cylinder air charge for an internal combustion engine 有权
    确定内燃机的气缸充气的方法和装置

    公开(公告)号:US08532910B2

    公开(公告)日:2013-09-10

    申请号:US13109040

    申请日:2011-05-17

    IPC分类号: F02D41/18

    摘要: A method for determining a cylinder air charge for an internal combustion engine includes determining engine operating parameters including an intake air charge density, an engine delta pressure as a ratio of an intake manifold pressure to an exhaust pressure, and an engine speed. An open-throttle volumetric efficiency corresponding to the engine operating parameters is determined, and a closed-throttle volumetric efficiency corresponding to the engine operating parameters is also determined. The cylinder air charge is determined using a selected one of the open-throttle volumetric efficiency and the closed-throttle volumetric efficiency.

    摘要翻译: 一种用于确定用于内燃机的气缸空气充量的方法包括确定发动机操作参数,其包括进气压力密度,作为进气歧管压力与排气压力的比率的发动机三角形压力和发动机转速。 确定与发动机工作参数对应的节气门开度的体积效率,并且还确定与发动机工作参数相对应的闭合节气门体积效率。 气缸空气充量是使用节气门开度的节气门容积效率和闭路节气门容积效率中的一个来确定的。

    ROBUST ESTIMATION OF BIODIESEL BLEND RATIO FOR ALTERNATIVE FUEL COMBUSTION
    70.
    发明申请
    ROBUST ESTIMATION OF BIODIESEL BLEND RATIO FOR ALTERNATIVE FUEL COMBUSTION 有权
    用于替代燃料燃烧的生物柴油混合比的鲁棒估计

    公开(公告)号:US20120303245A1

    公开(公告)日:2012-11-29

    申请号:US13113177

    申请日:2011-05-23

    IPC分类号: F02D41/30

    摘要: A method to control an internal combustion engine includes operating the engine with a fuel blend of a first fuel and a second fuel, monitoring a value of a first combustion parameter during engine operation, monitoring a first value for a second combustion parameter during engine operation, determining a second value for the second combustion parameter in accordance with a predetermined correspondence among the first combustion parameter, the second combustion parameter, and a predetermined fuel blend of the first fuel and the second fuel, determining the fuel blend based upon a difference between the first and second values for the second combustion parameter, and controlling the engine based upon the fuel blend.

    摘要翻译: 控制内燃机的方法包括:利用第一燃料和第二燃料的燃料混合来运行发动机,在发动机运转期间监测第一燃烧参数的值,在发动机运转期间监测第二燃烧参数的第一值, 根据所述第一燃烧参数,所述第二燃烧参数和所述第一燃料和所述第二燃料的预定燃料混合之间的预定对应关系,确定所述第二燃烧参数的第二值,基于所述第一燃料参数 用于第二燃烧参数的第一和第二值,以及基于燃料混合物来控制发动机。