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16 条记录 (耗时 0.013 秒)

    METHODS FOR REDUCING ENGINE EXHAUST EMISSIONS
    8.
    发明申请
    METHODS FOR REDUCING ENGINE EXHAUST EMISSIONS 有权
    减少发动机排气的方法

    公开(公告)号：US20100050605A1

    公开(公告)日：2010-03-04

    申请号：US12201564

    申请日：2008-08-29

    申请人： Eva Thanasiu ,  Carolyn Parks Hubbard ,  Shane Elwart

    发明人： Eva Thanasiu ,  Carolyn Parks Hubbard ,  Shane Elwart

    IPC分类号： F01N9/00

    CPC分类号： F01N9/00 ,  Y02T10/22 ,  Y02T10/47

    摘要： A method for controlling an internal combustion engine wherein, during an initial, relatively low temperature operating phase of the engine, the engine operates with a modulated air/fuel ratio established independently of the operating condition of the engine and wherein, during a subsequent higher temperature operating phase of the engine, the air/fuel ratio is modulated in as a function of the operating conditions of the engine.

    摘要翻译： 一种用于控制内燃机的方法，其中，在所述发动机的初始相对较低的温度运行阶段期间，所述发动机以独立于所述发动机的运行状态而建立的调制空气/燃料比工作，并且其中，在随后的较高温度 发动机的工作阶段，空燃比根据发动机的运行条件进行调制。

    Controlled Air-Fuel Ratio Modulation Air Fuel Sensor Input
    9.
    发明申请
    Controlled Air-Fuel Ratio Modulation Air Fuel Sensor Input 有权
    控制空燃比调制空气燃料传感器输入

    公开(公告)号：US20090107113A1

    公开(公告)日：2009-04-30

    申请号：US11926382

    申请日：2007-10-29

    申请人： Eva Thanasiu ,  Christian Thomas Goralski, JR. ,  Robert Joseph Jerger ,  Shane Elwart

    发明人： Eva Thanasiu ,  Christian Thomas Goralski, JR. ,  Robert Joseph Jerger ,  Shane Elwart

    IPC分类号： F01N3/00

    CPC分类号： F01N11/007 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/47

    摘要： A method is described for operating an engine and an emission control system downstream of the engine, the emission control system including a catalyst, an exhaust gas path coupling the engine to the catalyst, a first air-fuel ratio sensor positioned upstream of the catalyst and a second air-fuel ratio sensor positioned adjacent to or downstream of the catalyst. The method includes correlating variation in the catalyst performance across air-fuel ratios, as identified via the first and second sensors, to fuel composition of fuel combusted in the engine.

    摘要翻译： 描述了一种用于在发动机下游操作发动机和排放控制系统的方法，排放控制系统包括催化剂，将发动机耦合到催化剂的排气路径，位于催化剂上游的第一空燃比传感器，以及 位于催化剂附近或下游的第二空燃比传感器。 该方法包括将通过第一和第二传感器识别的空气 - 燃料比的催化剂性能的变化与在发动机中燃烧的燃料的燃料组成相关联。

    Method and system for monitoring a catalytic converter
    10.
    发明授权
    Method and system for monitoring a catalytic converter 失效
    用于监测催化转化器的方法和系统

    公开(公告)号：US06550237B1

    公开(公告)日：2003-04-22

    申请号：US10065190

    申请日：2002-09-25

    申请人： Andrew A. Adamczyk ,  Christian Thomas Goralski, Jr. ,  Eva Thanasiu

    发明人： Andrew A. Adamczyk ,  Christian Thomas Goralski, Jr. ,  Eva Thanasiu

    IPC分类号： F01N300

    CPC分类号： F02D41/1458 ,  F01N11/007 ,  F01N2550/02 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1474 ,  F02D41/1481 ,  F02D41/187 ,  F02D2200/0404 ,  Y02T10/47

    摘要： A method and system are provided for monitoring exhaust gas conversion efficiency of a catalytic converter during operation of an internal combustion engine coupled to the catalytic converter. The system includes an upstream exhaust gas sensor interposed the engine and the catalytic converter for generating a first signal based on the exhaust gas upstream of the converter. A downstream exhaust gas sensor is interposed the catalytic converter and atmosphere for generating a second signal based on the exhaust gas downstream of the converter. A phase shift detector is provided for estimating a phase shift between the first and second signals. A processor is provided for aligning the first and second signals such that the resulting phase shift between the first and second signals is substantially an integer multiple of &pgr; radians and for determining conversion efficiency of the catalytic converter based such phase aligned first and second signals. With such method and system, average error of the calculated index ratio using such system and method and the theoretical average error in index ration (IR) is minimized when the phase shift between the upstream and downstream sensor signals is substantially an integer multiple of &pgr; radians.

    摘要翻译： 提供了一种方法和系统，用于监测催化转化器在与催化转化器耦合的内燃机操作期间的排气转化效率。 该系统包括插入发动机和催化转化器的上游废气传感器，用于基于转炉上游的排气产生第一信号。 下游废气传感器插入催化转化器和气氛，用于基于转炉下游的废气产生第二信号。 提供了一种用于估计第一和第二信号之间的相移的相移检测器。 提供了一种用于对准第一和第二信号的处理器，使得在第一和第二信号之间产生的相移基本上是π弧度的整数倍，并且用于确定基于这种相位对准的第一和第二信号的催化转换器的转换效率。 使用这种方法和系统，当上游和下游传感器信号之间的相移基本上是pi弧度的整数倍时，使用这种系统和方法的计算指数比率的平均误差和指数比（IR）的理论平均误差被最小化 。