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    • 13. 发明授权
    • Apparatus and method for heating an automotive catalyst to an emission reactive condition
    • 将汽车催化剂加热到排放反应条件的装置和方法
    • US06272849B1
    • 2001-08-14
    • US09482299
    • 2000-01-13
    • Margherita Zanini-FisherEva ThanasiuJeffrey Scott Hepburn
    • Margherita Zanini-FisherEva ThanasiuJeffrey Scott Hepburn
    • F01N300
    • F01N3/2006B01D53/90B01D53/9495B01D2251/102B01D2251/202B01D2258/012F01N3/206F01N2610/04Y02A50/2322Y02T10/26
    • A method of conditioning an automotive catalyst by (a) electrolyzing water on-board the vehicle to derive and store separate quantities of hydrogen and oxygen at pressures in the range of 50-100 psi; (b) immediately upon initiation of engine starting, rapidly transferring stoichiometric proportions of the separated and stored hydrogen and oxygen to a front face location of a catalyst substrate to heat the catalyst substrate by spontaneous catalytic recombination of the hydrogen and oxygen and thereby raise the temperature of the catalyst substrate rapidly to a temperature at which certain emissions can be catalytically converted; (c) complete cranking of the engine to admit emissions laden with CO and HC to the catalyst substrate while continuing to transfer stoichiometric proportions of the hydrogen and oxygen to said front face location for raising the substrate temperature to about 300° C.; and ceasing introduction of the hydrogen and oxygen when the catalyst substrate has reached a full operational temperature for optimum emission conversion Apparatus for pre-heating an automotive catalyst, comprising: an on-board electrolysis system for producing and separately storing quantities of relatively pure hydrogen and oxygen in stoichiometric proportions and at generally equal pressures; a frontal catalyst face defining entrances to multi-channeled catalyst laden flow paths; controllable transfer lines for selectively communicating hydrogen and oxygen to the front face whereby efficient spontaneous exothermic recombination of hydrogen and oxygen may take place immediately.
    • 一种通过(a)在车辆上电解水来调节汽车催化剂的方法,以在50-100psi的压力下导出和存储分开的氢气和氧气量; (b)在发动机起动开始后立即将分离储存的氢和氧的化学计量比例快速地转移到催化剂底物的正面位置,以通过氢和氧的自发催化重组来加热催化剂底物,从而提高温度 的催化剂底物迅速地达到可以催化转化某些排放物的温度; (c)发动机的完整起动,以将含有CO和HC的排放物引入催化剂基质,同时继续将化学计量比例的氢和氧转移到所述前表面位置,以使衬底温度升高至约300℃; 并且当催化剂基底已经达到完全的工作温度以达到最佳的发射转化时,停止引入氢和氧。用于预热汽车催化剂的装置包括:用于生产和分别储存相对纯的氢和氧的量的车载电解系统 化学计量比和通常相等的压力; 正面催化剂面定义了多通道催化剂载流通道的入口; 用于选择性地将氢气和氧气连通到前面的可控输送管线,从而可以立即进行氢气和氧气的有效的自发放热复合。
    • 15. 发明授权
    • Method and system for monitoring a catalytic converter
    • 用于监测催化转化器的方法和系统
    • US06550237B1
    • 2003-04-22
    • US10065190
    • 2002-09-25
    • Andrew A. AdamczykChristian Thomas Goralski, Jr.Eva Thanasiu
    • Andrew A. AdamczykChristian Thomas Goralski, Jr.Eva Thanasiu
    • F01N300
    • F02D41/1458F01N11/007F01N2550/02F02D41/1441F02D41/1456F02D41/1474F02D41/1481F02D41/187F02D2200/0404Y02T10/47
    • 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.
    • 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 。