Regeneration control of diesel particulate filter
    3.
    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。

    Regeneration control of diesel particulate filter
    9.
    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:US07200991B2

    公开(公告)日:2007-04-10

    申请号:US10934390

    申请日:2004-09-07

    IPC分类号: F01N3/02 F01N3/00

    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。

    Filter regeneration control
    10.
    发明授权
    Filter regeneration control 有权
    过滤器再生控制

    公开(公告)号:US07065959B2

    公开(公告)日:2006-06-27

    申请号:US10937271

    申请日:2004-09-10

    IPC分类号: F01N3/00 F02M25/06 F02N3/02

    摘要: A regeneration control device, which regenerates a filter (13) for trapping particulate matter in exhaust gas from an engine (1), is disclosed. The filter (13) supports a catalyst which oxidizes unburnt components in the exhaust gas. The regeneration control device has a temperature sensor (14) which detects a filter inlet exhaust gas temperature (Tdpf_in_mea); and a microcomputer (22). The microcomputer (22) is programmed to compute a filter outlet exhaust gas temperature (Tdpf_out_cal), not including temperature rise due to oxidation reaction of unburnt components based on the detected inlet exhaust gas temperature; compute the filter bed temperature (Tbed_cal) based on the detected inlet exhaust gas temperature and computed outlet exhaust gas temperature; compute a temperature rise (ΔThc1) due to oxidation reaction of unburnt components; correct the bed temperature based on the computed temperature rise (ΔThc1).

    摘要翻译: 公开了一种再生控制装置,其再生用于捕集来自发动机(1)的废气中的颗粒物质的过滤器(13)。 过滤器(13)支持催化剂,该催化剂氧化废气中的未燃烧成分。 再生控制装置具有检测过滤器入口排气温度(Tdpf_in_mea)的温度传感器(14)。 和微计算机(22)。 微型计算机(22)被编程为基于检测到的入口排气温度来计算过滤器出口排气温度(Tdpf_out_cal),不包括由于未燃组分的氧化反应引起的温度升高; 基于检测到的入口排气温度和计算出的排气温度计算滤床温度(Tbed_cal); 计算由于未燃组分的氧化反应引起的温升(DeltaThc 1); 根据计算出的温升来校正床温(DeltaThc 1)。