Exhaust gas purifying system of internal combustion engine
    22.
    发明授权
    Exhaust gas purifying system of internal combustion engine 失效
    内燃机排气净化系统

    公开(公告)号:US07153342B2

    公开(公告)日:2006-12-26

    申请号:US10752519

    申请日:2004-01-08

    IPC分类号: B01D46/00

    摘要: An exhaust gas purifying system of a diesel engine comprises a PM filter installed in an exhaust passage line of the engine to collect particulate matter (PM) in the exhaust gas from the engine; a pressure difference sensor for detecting a pressure difference between upstream and downstream portions of the PM filter; a control unit which comprises a collected PM amount estimating section that estimates an amount of collected PM in the PM filter based on the pressure difference; and a reactivation timing judging section that, based on the estimated amount of the collected PM, judges a reactivation time when the reactivation of the PM filter is needed; and a reactivation carrying out system that, upon judgment of the reactivation time, carries out a predetermined operation to increases the temperature of the PM filter thereby to burn the collected PM. The control unit further comprises a dispersion condition judging section that judges a dispersion condition of the collected PM in the PM filter; and a correction section that corrects the estimated amount of the collected PM in accordance with the judged dispersion condition of the collected PM.

    摘要翻译: 柴油发动机的废气净化系统包括安装在发动机的排气通道管线中的PM过滤器,以收集来自发动机的废气中的颗粒物质(PM); 用于检测PM过滤器的上游部分和下游部分之间的压力差的压力差传感器; 控制单元,其包括:收集的PM量估计部,其基于所述压差来估计所述PM滤波器中的所收集的PM的量; 以及再生时间判定部,其基于所估计的所收集的PM,判断需要PM滤波器的再激活时的再激活时间; 以及重新启动执行系统,其在重新启动时间的判断之后,执行预定的操作以增加PM过滤器的温度,从而燃烧所收集的PM。 所述控制单元还包括色散条件判断部,判断所述PM滤波器中所收集的PM的色散条件; 以及校正部,其根据所收集的PM的判定色散条件来校正所收集的PM的估计量。

    Regeneration of particulate filter
    23.
    发明授权
    Regeneration of particulate filter 有权
    颗粒过滤器的再生

    公开(公告)号:US07062906B2

    公开(公告)日:2006-06-20

    申请号:US10790119

    申请日:2004-03-02

    IPC分类号: F01N3/00

    摘要: A regeneration device for a filter (13) which traps particulate matter in an exhaust gas of an engine (1) is disclosed. The regeneration device has a sensor (25) which detects an engine running point containing an engine load and a controller (22) storing a map which defines a low load region (A) relating to engine running points. The controller (22) determines whether or not the detected engine running point is in the low load region referring to the map, when the deposition amount of particulate matter is more than a first reference amount (PMn). Further, the controller (22) immediately start a first filter regeneration control by raising a temperature of the exhaust gas, when the detected engine running point is not in the low load region, and start a second filter regeneration control by raising the temperature of the exhaust gas after the deposition amount of particulate matter exceeds a second reference amount (PMe), when the detected engine running point is in the low load region.

    摘要翻译: 公开了一种用于捕集发动机(1)的排气中的颗粒物质的过滤器(13)的再生装置。 再生装置具有检测包含发动机负荷的发动机运转点的传感器(25)和存储有与发动机运转点有关的低负荷区域(A)的映射的控制器(22)。 当颗粒物的沉积量大于第一参考量(PMn)时,控制器(22)参考地图确定检测到的发动机运转点是否在低负载区域。 此外,当检测到的发动机运转点不在低负荷区域时,控制器(22)通过提高废气的温度来立即开始第一过滤器再生控制,并且通过提高第二过滤器再生控制的温度来开始第二过滤器再生控制 当检测到的发动机运转点处于低负载区域时,颗粒物的沉积量之后的废气超过第二基准量(PMe)。

    Engine exhaust gas purification device
    26.
    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。

    Exhaust gas processing device and method for diesel engine
    28.
    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。

    Filter regeneration control
    30.
    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。