Engine exhaust gas purification device
    42.
    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
    44.
    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。

    Regeneration of particulate filter
    47.
    发明授权
    Regeneration of particulate filter 失效
    颗粒过滤器的再生

    公开(公告)号:US06851258B2

    公开(公告)日:2005-02-08

    申请号:US10452378

    申请日:2003-06-03

    摘要: An exhaust passage (2) of a diesel engine (1) is provided with a filter (41) for trapping particulate matter. Regeneration of the filter (41) is divided into first to third phases. In the first phase the filter temperature is raised to the combustion temperature of the particulate matter in a short period of time through control of the exhaust gas temperature. In the second phase, the oxygen concentration of the exhaust gas is held at a predetermined low level while the filter temperature is maintained so as to prevent excessive combustion of particulate matter. In the third phase, wherein the amount of trapped particulate matter has been reduced, the oxygen concentration of the exhaust gas is held at a predetermined high level while the filter temperature is maintained so as to complete the combustion of the trapped particulate matter.

    摘要翻译: 柴油发动机(1)的排气通道(2)设置有用于捕集颗粒物质的过滤器(41)。 过滤器(41)的再生分为第一至第三阶段。 在第一阶段,通过控制废气温度,过滤器温度在短时间内提高到颗粒物质的燃烧温度。 在第二阶段,将废气的氧浓度保持在预定的低水平,同时保持过滤器温度,以防止颗粒物质的过度燃烧。 在被捕获的颗粒物质的量减少的第三相中,将废气的氧浓度保持在预定的高水平,同时保持过滤器温度以完成被捕获的颗粒物质的燃烧。