Filter regeneration in engine exhaust gas purification device
    14.
    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。

    Engine exhaust gas purification device
    16.
    发明授权
    Engine exhaust gas purification device 有权
    发动机废气净化装置

    公开(公告)号:US07147693B2

    公开(公告)日:2006-12-12

    申请号:US10823495

    申请日:2004-04-06

    IPC分类号: B01D46/00

    摘要: An engine exhaust gas purification device is disclosed. The purification device has a filter (13) which traps particulate matter contained in the exhaust gas from an engine; a differential pressure detection sensor (16) which detects a differential pressure of the filter; a sensor (14, 15, 21, 31, 33) which detects an engine running state, and a microcomputer (22). The microcomputer (22) is programmed to compute an estimated ash amount ASH_a of the filter based on the detected differential pressure; compute an oil consumption amount OC_total based on the detected engine running state; compute an ash density DENS_ASH from the oil consumption amount OC_total and estimated ash amount ASH_a, and compute an ash amount ASH of the filter based on the oil consumption amount OC_total and ash density DENS_ASH.

    摘要翻译: 公开了一种发动机废气净化装置。 净化装置具有过滤器(13),其收集来自发动机的废气中包含的颗粒物质; 差压检测传感器(16),其检测所述过滤器的压差; 检测发动机运转状态的传感器(14,15,21,31,33)和微计算机(22)。 微型计算机(22)被编程为基于检测到的差压来计算滤波器的估计灰分ASH_a; 基于检测到的发动机运转状态计算油耗量OC_total; 根据油耗量OC_to和估计灰分量ASH_a计算灰分浓度DENS_ASH,并基于油耗量OC_total和灰分浓度DENS_ASH计算过滤器的灰分ASH。

    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。

    Exhaust gas processing device and method for diesel engine
    19.
    发明授权
    Exhaust gas processing device and method for diesel engine 失效
    柴油机废气处理装置及方法

    公开(公告)号:US06990803B2

    公开(公告)日:2006-01-31

    申请号:US10815848

    申请日:2004-04-02

    IPC分类号: F01N3/00

    摘要: A controller (31) determines whether, during previous regeneration processing of a filter (41), the previous regeneration processing was interrupted or the previous regeneration processing was completed without interruption. An amount of DPM trapped in the filter (41) is estimated on the basis of a pressure loss in the filter (41) during running following uninterrupted completion of the previous regeneration processing in the previous regeneration processing of the filter (41), whereas the amount of DPM trapped in the filter (41) is estimated on the basis of an amount of discharged DPM during running following an interruption in the previous regeneration processing in the course of the previous regeneration processing of the filter (41).

    摘要翻译: 控制器(31)确定在过滤器(41)的先前的再生处理期间,先前的再生处理是否被中断或者先前的再生处理是否被中断而完成。 基于在过滤器(41)的先前再生处理中的先前再生处理的不间断完成之后的运行期间,基于过滤器(41)中的压力损失来估计捕获在过滤器(41)中的DPM的量, 基于在过滤器(41)的先前再生处理过程中的先前再生处理中断之后的运行期间的排出DPM的量来估计捕获在过滤器(41)中的DPM的量。