Regeneration control of diesel particulate filter
    13.
    发明申请
    Regeneration control of diesel particulate filter 有权
    柴油颗粒过滤器再生控制

    公开(公告)号:US20050120712A1

    公开(公告)日:2005-06-09

    申请号:US11003349

    申请日:2004-12-06

    IPC分类号: F02D41/02 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 in engine exhaust gas purification device
    14.
    发明申请
    Filter regeneration in engine exhaust gas purification device 有权
    发动机废气净化装置过滤器再生

    公开(公告)号:US20050060991A1

    公开(公告)日:2005-03-24

    申请号:US10937272

    申请日:2004-09-10

    摘要: A regeneration control device which regenerates a filter (13) by increasing an exhaust gas temperature to burn exhaust gas particulates trapped in the filter, is disclosed. The filter (13) traps particulate matter in exhaust gas from an engine (1). The regeneration control device suppresses fuel cost-performance impairment due to filter regeneration. The regeneration control device has a load detection sensor (31) which detects an engine load and a microcomputer-based controller (22). The controller is programmed to perform engine control to adjust the exhaust gas temperature for regeneration of the filter (13), when a computed trapped amount is equal to or more than the first reference value (A) and less than the second reference value (B), and the detected load (Vsp) is equal to or more than a reference load (Vo); and perform engine control to adjust the exhaust gas temperature for regeneration of the filter (13) regardless of the detected load (Vsp), when the computed trapped amount is equal to or more than the second reference value (B).

    摘要翻译: 公开了一种再生控制装置,其通过增加废气温度来再生过滤器(13)以燃烧被捕获在过滤器中的废气微粒。 过滤器(13)捕集来自发动机(1)的废气中的颗粒物质。 再生控制装置抑制由过滤器再生引起的燃料成本性能损害。 再生控制装置具有检测发动机负荷的负载检测传感器(31)和基于微机的控制器(22)。 当计算出的捕获量等于或大于第一参考值(A)并小于第二参考值(B)时,控制器被编程为执行发动机控制以调节废气温度以再生过滤器(13) ),检测负载(Vsp)等于或大于参考负载(Vo); 并且当所计算的被捕获量等于或大于第二参考值(B)时,执行发动机控制以调节用于再生过滤器(13)的排气温度,而不管检测到的负载(Vsp)如何。

    Filter regeneration in engine exhaust gas purification device
    15.
    发明授权
    Filter regeneration in engine exhaust gas purification device 有权
    发动机废气净化装置过滤器再生

    公开(公告)号:US07219493B2

    公开(公告)日:2007-05-22

    申请号:US10937272

    申请日:2004-09-10

    IPC分类号: F01N3/00 F01N3/02

    摘要: A regeneration control device which regenerates a filter (13) by increasing an exhaust gas temperature to burn exhaust gas particulates trapped in the filter, is disclosed. The filter (13) traps particulate matter in exhaust gas from an engine (1). The regeneration control device suppresses fuel cost-performance impairment due to filter regeneration. The regeneration control device has a load detection sensor (31) which detects an engine load and a microcomputer-based controller (22). The controller is programmed to perform engine control to adjust the exhaust gas temperature for regeneration of the filter (13), when a computed trapped amount is equal to or more than the first reference value (A) and less than the second reference value (B), and the detected load (Vsp) is equal to or more than a reference load (Vo); and perform engine control to adjust the exhaust gas temperature for regeneration of the filter (13) regardless of the detected load (Vsp), when the computed trapped amount is equal to or more than the second reference value (B).

    摘要翻译: 公开了一种再生控制装置,其通过增加废气温度来再生过滤器(13)以燃烧被捕获在过滤器中的废气微粒。 过滤器(13)捕集来自发动机(1)的废气中的颗粒物质。 再生控制装置抑制由过滤器再生引起的燃料成本性能损害。 再生控制装置具有检测发动机负荷的负载检测传感器(31)和基于微机的控制器(22)。 当计算出的捕获量等于或大于第一参考值(A)并小于第二参考值(B)时,控制器被编程为执行发动机控制以调节废气温度以再生过滤器(13) ),检测负载(Vsp)等于或大于参考负载(Vo); 并且当所计算的被捕获量等于或大于第二参考值(B)时,执行发动机控制以调节用于再生过滤器(13)的排气温度,而不管检测到的负载(Vsp)如何。

    Regeneration control of diesel particulate filter
    17.
    发明授权
    Regeneration control of diesel particulate filter 失效
    柴油颗粒过滤器再生控制

    公开(公告)号:US07146805B2

    公开(公告)日:2006-12-12

    申请号:US10942010

    申请日:2004-09-16

    IPC分类号: F01N3/00 F01N3/02

    摘要: To regenerate a diesel particulate filter (10) which traps particulate matter contained in the exhaust gas of a diesel engine (20), a controller (16) raises the temperature of the exhaust gas through fuel injection control of a fuel injector (23), and thus burns the particulate matter trapped in the filter (10). The controller (16) cumulatively calculates the time during which the temperature of the filter (10) exceeds a target temperature as an effective regeneration time. By estimating the amount of particulate matter remaining in the filter (10) on the basis of the effective regeneration time, the controller (16) estimates the amount of remaining particulate matter with a high degree of precision and without consuming energy, whereupon regeneration of the filter (10) through fuel injection control ends.

    摘要翻译: 为了再生捕集柴油发动机(20)排气中的颗粒物质的柴油机微粒过滤器(10),控制器(16)通过燃料喷射器(23)的燃料喷射控制来升高废气的温度, 从而燃烧捕集在过滤器(10)中的颗粒物质。 控制器(16)累积地计算过滤器(10)的温度超过目标温度作为有效再生时间的时间。 通过基于有效再生时间估计过滤器(10)中剩余的颗粒物质的量,控制器(16)以高精度估计剩余颗粒物的量并且不消耗能量,由此再生 过滤器(10)通过燃油喷射控制结束。

    Regeneration control of diesel particulate filter
    19.
    发明申请
    Regeneration control of diesel particulate filter 失效
    柴油颗粒过滤器再生控制

    公开(公告)号:US20050056005A1

    公开(公告)日:2005-03-17

    申请号:US10934390

    申请日:2004-09-07

    摘要: A filter (10) which traps particulate matter contained in the exhaust gas of a diesel engine (20) for a vehicle is regenerated by fuel injection control. A controller (16) calculates a representative value of the operating condition of the diesel engine (20) during a latest predetermined time period, and determines the traveling condition of the vehicle on the basis of this representative value. When the representative value corresponds to a highway traveling condition, fuel injection control is performed in accordance with a pattern for burning all of the particulate matter trapped in the filter (10). Under any other conditions, fuel injection control is performed in accordance with another pattern. Hence optimum filter regeneration can be performed depending on the traveling condition of the vehicle.

    摘要翻译: 通过燃料喷射控制再生用于捕集车辆用柴油发动机(20)的废气中所含有的颗粒物质的过滤器(10)。 控制器(16)在最近的预定时间段内计算柴油发动机(20)的运转状态的代表值,并基于该代表值来确定车辆的行驶状态。 当代表值对应于高速公路行驶状态时,根据用于燃烧捕获在过滤器(10)中的所有颗粒物质的图案进行燃料喷射控制。 在任何其他条件下,根据另一种模式执行燃料喷射控制。 因此,可以根据车辆的行驶状况进行最佳的过滤器再生。