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    Engine exhaust gas purification apparatus
    58.
    发明公开
    Engine exhaust gas purification apparatus 审中-公开
    发动机废气净化装置

    公开(公告)号：EP1083323A3

    公开(公告)日：2003-04-02

    申请号：EP00119610.4

    申请日：2000-09-07

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Kitamura, Tooru ,  Mashiki, Zenichiro

    IPC分类号： F02D41/02 ,  F01N11/00 ,  F02D41/12

    CPC分类号： F01N3/0842 ,  F02D41/0275 ,  F02D41/126 ,  F02D2200/0806 ,  F02D2200/0808 ,  Y02T10/24

    摘要： An exhaust gas purification apparatus (60) estimates the amount (sNox) of NOx stored in a NOx catalytic converter (49) arranged in an exhaust passage (48) of an engine (2), based on an operating state of the engine. When the amount of stored NOx is greater than a predetermined storage limit (NoxCAP), the concentration of fuel in the air fuel mixture is increased so that the fuel concentration becomes higher than that of a stoichiometric mixture in order to reduce the amount of stored NOx. The apparatus includes a fuel cutting means (60, 22) that cuts the supply of fuel to the engine based on the operating state of the engine. A stored NOx reduction means (60, 22, 46) temporarily increases the fuel concentration of the air fuel mixture so that the fuel concentration becomes higher than that of a stoichiometric mixture at one point in a period from when the fuel cut is terminated to just before the stored amount of NOx exceeds the predetermined storage limit.

    摘要翻译： 排气净化装置（60）基于发动机的运转状态来估计在配置在发动机（2）的排气通路（48）中的NOx催化剂（49）中积存的NOx的量（sNox）。 当储存的NOx量大于预定的储存限度（NoxCAP）时，空气燃料混合物中的燃料浓度增加，使得燃料浓度变得高于化学计量混合物的浓度，以便减少储存的NOx量 。 该设备包括燃料切断装置（60,22），其基于发动机的运行状态切断向发动机供应的燃料。 所存储的NO x降低装置（60,22,46）暂时增加空气燃料混合物的燃料浓度，使得燃料浓度在从燃料切断终止到刚刚结束的时间段内的一个点处变为高于化学计量混合物的浓度 在储存的NOx量超过预定储存限度之前。

    NOx release index
    59.
    发明公开
    NOx release index 审中-公开
    NOx Abgabeindex

    公开(公告)号：EP1273337A1

    公开(公告)日：2003-01-08

    申请号：EP02012811.2

    申请日：2002-06-10

    申请人： Delphi Technologies, Inc.

    发明人： Balland, Jean

    IPC分类号： B01D53/94 ,  F01N3/08

    CPC分类号： F01N3/0842 ,  B01D53/9495 ,  F01N11/00 ,  F01N2550/03 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/1465 ,  F02D2200/0808 ,  F02D2200/0814 ,  Y02A50/2345 ,  Y02T10/47

    摘要： Method of monitoring the adsorptive capacity of a NO X adsorber of an internal combustion engine, comprising the following steps:

    1) identification of O 2 moles released from the adsorber during rich pulse regeneration,
    2) calculation of NO 2 moles released during rich pulse regeneration using the value from step 1 in a release model based on lambda deviation across the adsorber and the release chemistry of NO 2 from said adsorber
    3) optional storage of successive results of steps 1 and 2
    4) use of the results of step 2 and/or 3 to update an adaptative capacity model to control the duration of the lean phase and/or of the rich pulse.

    摘要翻译： 监测内燃机NO x吸附器的吸附能力的方法，包括以下步骤：1）在富脉冲再生期间鉴定从吸附器释放的氧气摩尔数，2）计算富脉冲再生时释放的NO 2摩尔数， 在基于吸附器上的λ偏差的释放模型中的步骤1和来自所述吸附器的NO 2的释放化学物质3）步骤1和2的连续结果的可选存储4）使用步骤2和/或3的结果来更新 适应能力模型来控制贫相和/或富脉冲的持续时间。