Filter regeneration in engine exhaust gas purification device
    31.
    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。

    Regeneration control of exhaust gas filter
    33.
    发明授权
    Regeneration control of exhaust gas filter 有权
    废气过滤器再生控制

    公开(公告)号:US07600374B2

    公开(公告)日:2009-10-13

    申请号:US11610390

    申请日:2006-12-13

    申请人: Shouichirou Ueno

    发明人: Shouichirou Ueno

    IPC分类号: F01N3/00

    摘要: A controller (70) controls regeneration of an exhaust gas filter (52) which traps particulate matter contained in exhaust gas to prevent the particulate matter from being discharged into the atmosphere. When regeneration of the exhaust gas filter (52) is underway and the engine (10) is decelerating, the controller (70) determines whether or not a catalyst (40) is active (S82) and whether the engine (10) is decelerating gently or rapidly (S83). When the engine (10) is decelerating gently, the controller (70) performs a post-injection following a main fuel injection (S824), and when the engine (10) is decelerating rapidly, the controller (70) performs the main fuel injection but stops the post-injection (S834). In so doing, the temperature of the filter does not rise excessively, and the filter can be prevented from melting.

    摘要翻译: 控制器(70)控制排出气体过滤器(52)的再生,该废气过滤器捕集废气中包含的颗粒物质,以防止颗粒物质排放到大气中。 当废气过滤器(52)的再生正在进行并且发动机(10)正在减速时,控制器(70)确定催化剂(40)是否有效(S82)以及发动机(10)是否缓慢减速 或快速(S83)。 当发动机(10)缓慢减速时,控制器(70)在主燃料喷射之后执行后喷射(S824),并且当发动机(10)快速减速时,控制器(70)执行主燃料喷射 但停止后注射(S834)。 在这样做时,过滤器的温度不会过度升高,并且可以防止过滤器熔化。