Filter regeneration control
    12.
    发明授权
    Filter regeneration control 有权
    过滤器再生控制

    公开(公告)号:US07322182B2

    公开(公告)日:2008-01-29

    申请号:US11013473

    申请日:2004-12-17

    IPC分类号: F01N3/00

    摘要: A regeneration control device which regenerates a filter (4) which traps particulate matter in the exhaust gas of an engine (1) is disclosed. The regeneration control device includes a first temperature sensor (16, 17), which detects one of an upstream temperature and a downstream temperature upstream and downstream of the filter (4) as a first temperature (Tin, Tout); a second temperature sensor (16, 17), which detects the other temperature as a second temperature (Tin, Tout); and a microcomputer. The microcomputer programmed to compute an estimated value (Tbede2) for the second temperature based on the first temperature detected by the first temperature sensor (16, 17), compute an estimated bed temperature (Tbed2) of the filter based on the second temperature detected by a second temperature sensor (16, 17) and the estimated value (Tbede2) for the second temperature, and perform engine control for increasing the temperature of the exhaust gas based on the estimated bed temperature (Tbed2).

    摘要翻译: 公开了一种对发动机(1)的废气中的颗粒物进行捕集的再生过滤器(4)的再生控制装置。 再生控制装置包括第一温度传感器(16,17),其将过滤器(4)的上游和下游的上游温度和下游温度中的一个检测为第一温度(Tin,Tout); 第二温度传感器(16,17),其将另一温度检测为第二温度(Tin,Tout); 和微型计算机。 计算机被编程为基于由第一温度传感器(16,17)检测到的第一温度来计算第二温度的估计值(Tbede 2),基于第二温度计算滤波器的估计床温(Tbed 2) 通过第二温度传感器(16,17)检测出第二温度的估计值(Tbede 2),并且基于估计的床温度(Tbed 2)进行用于提高废气温度的发动机控制。

    Regeneration control of diesel particulate filter
    14.
    发明授权
    Regeneration control of diesel particulate filter 有权
    柴油颗粒过滤器再生控制

    公开(公告)号:US07134275B2

    公开(公告)日:2006-11-14

    申请号:US11003349

    申请日:2004-12-06

    IPC分类号: F01N3/00

    摘要: A diesel particulate filter (41) traps particulate matter contained in the exhaust gas of a diesel engine (1) for a vehicle. The filter (41) is regenerated by raising the exhaust gas temperature so that the trapped particulate matter burns. A controller (31) calculates a particulate matter combustion amount PMr during regeneration, and in accordance with increases in the combustion amount PMr, raises the oxygen concentration of the exhaust gas by operating an intake throttle (42) and/or a variable nozzle (24) of a turbocharger (21). As a result, the filter (41) is held at an optimum temperature for regeneration regardless of the residual particulate matter amount, and hence the time required for regeneration can be shortened without damaging the heat resistance performance of the filter (41).

    摘要翻译: 柴油微粒过滤器(41)捕集包含在用于车辆的柴油发动机(1)的废气中的颗粒物质。 过滤器(41)通过提高废气温度再生,使得捕获的颗粒物质燃烧。 控制器(31)计算再生时的颗粒物燃烧量PMr,并根据燃烧量PMr的增加,通过操作进气节流阀(42)和/或可变喷嘴(24)来提高排气的氧浓度 )的涡轮增压器(21)。 结果,过滤器(41)被保持在用于再生的最佳温度,而与残留颗粒物质量无关,因此可以缩短再生所需的时间,而不损害过滤器(41)的耐热性能。

    Filter regeneration control
    15.
    发明申请
    Filter regeneration control 有权
    过滤器再生控制

    公开(公告)号:US20050143899A1

    公开(公告)日:2005-06-30

    申请号:US11013473

    申请日:2004-12-17

    摘要: A regeneration control device which regenerates a filter (4) which traps particulate matter in the exhaust gas of an engine (1) is disclosed. The regeneration control device includes a first temperature sensor (16, 17), which detects one of an upstream temperature and a downstream temperature upstream and downstream of the filter (4) as a first temperature (Tin, Tout); a second temperature sensor (16, 17), which detects the other temperature as a second temperature (Tin, Tout); and a microcomputer. The microcomputer programmed to compute an estimated value (Tbede2) for the second temperature based on the first temperature detected by the first temperature sensor (16, 17), compute an estimated bed temperature (Tbed2) of the filter based on the second temperature detected by a second temperature sensor (16, 17) and the estimated value (Tbede2) for the second temperature, and perform engine control for increasing the temperature of the exhaust gas based on the estimated bed temperature (Tbed2).

    摘要翻译: 公开了一种对发动机(1)的废气中的颗粒物进行捕集的再生过滤器(4)的再生控制装置。 再生控制装置包括第一温度传感器(16,17),其将过滤器(4)的上游和下游的上游温度和下游温度中的一个检测为第一温度(Tin,Tout); 第二温度传感器(16,17),其将另一温度检测为第二温度(Tin,Tout); 和微型计算机。 计算机被编程为基于由第一温度传感器(16,17)检测到的第一温度来计算第二温度的估计值(Tbede2),基于由第一温度检测到的第二温度计算滤波器的估计床温(Tbed2) 第二温度传感器(16,17)和第二温度的估计值(Tbede2),并且基于估计的床温度(Tbed2)进行用于提高废气温度的发动机控制。