Diesel engine exhaust oxidizer
    2.
    发明授权
    Diesel engine exhaust oxidizer 失效
    柴油发动机尾气氧化器

    公开(公告)号:US5121601A

    公开(公告)日:1992-06-16

    申请号:US574891

    申请日:1990-08-30

    Inventor: Refaat A. Kammel

    Abstract: An oxidizing device with a microprocessor control means for removing soot and other particulates from the exhaust gases of a diesel engine having an enclosure with a forward inlet for receiving diesel engine exhaust, a main flow path through the enclosure having a medium for trapping soot and other particulates, a bypass through the enclosure for diverting flow from the main flow path, heating elements embedded in the trapping medium, and a microprocessor control means for selectively regenerating the trapping medium in accordance with certain sensed conditions relating to the status of engine operation and the condition of a particulate trapping medium that is disposed in the main flow path. The main flow path has an electrostatic precipitator that is disposed in underlying relationship to the particulate trapping medium in the main flow path and a series of vanes are disposed in underlying relationship to the electrostatic precipitator and serve to redirect the exhaust flow passing through the main flow path and distribute the exhaust flow over the electrostatic precipitator and the trapping medium.

    Abstract translation: 一种具有微处理器控制装置的氧化装置,用于从具有带有用于接收柴油发动机排气的正向入口的外壳的柴油发动机的排气中除去煤烟和其它颗粒物,通过外壳的主流路通过用于捕集煤烟等的介质 微粒,通过外壳的旁路,用于从主流路流动的流动,嵌入在捕集介质中的加热元件,以及微处理器控制装置,用于根据与发动机操作的状态相关的特定感测条件选择性地再生捕集介质, 设置在主流路中的微粒捕集介质的状态。 主流路具有静电除尘器,该静电除尘器与主流路中的颗粒捕集介质处于下面的关系中,并且一系列的叶片以静电除尘器的下面的关系设置,并且用于改变通过主流的排气流 路径并将排气流分布在静电除尘器和捕集介质上。

    Diesel engine exhaust oxidizer
    3.
    发明授权
    Diesel engine exhaust oxidizer 失效
    柴油发动机尾气氧化器

    公开(公告)号:US4969328A

    公开(公告)日:1990-11-13

    申请号:US265547

    申请日:1988-11-01

    Inventor: Refaat A. Kammel

    Abstract: A device for collecting and removing particulate emissions from diesel engine exhaust before the exhaust is discharged into the atmosphere. The device comprises an enclosure having an inlet, an outlet, a main flow path, containing a medium for trapping and removing particulate material, a by-pass for diverting the exhaust flow around the main flow path, a heating unit to initiate forced regeneration of the medium and a control system for regulating the forced regeneration of the medium and the flow through the main and by-pass flow paths. In a first aspect of the invention the regeneration of the medium and the flow through the main and by-pass flow paths are regulated by a pair of valves, a thermocouple, engine sensors, and a back-pressure switch. In a second aspect of the invention, a single valve and microcomputer are used in place of the pair of valves and in conjunction with the thermocouple regulate the flow through the main and by-pass flow paths and the regeneration of medium. In a third aspect, a compact enclosure is provided for installations where space is limited. An optional pre-converter, electrostatic precipitator, air injection and thermal stabilizer are disclsoed for enhancing performance and increasing the filtration efficiency of the device over a broad range of diesel engine applications.

    Abstract translation: 在废气排放到大气中之前,用于收集和去除柴油发动机废气中的颗粒物排放的装置。 该装置包括具有入口,出口,主流路,包含用于捕集和去除颗粒材料的介质的外壳,围绕主流路转向排气流的旁路;加热单元,用于启动强制再生 介质和用于调节介质的强制再生和通过主流和旁路流动路径的流量的控制系统。 在本发明的第一方面,介质的再生和通过主流和旁通流动路径的流动由一对阀,热电偶,发动机传感器和背压开关调节。 在本发明的第二方面中,使用单个阀和微型计算机代替一对阀,并结合热电偶调节通过主流和旁路流动路径的流动以及介质的再生。 在第三方面,为空间有限的安装提供紧凑的外壳。 可选的预转换器,静电除尘器,空气注入和热稳定器被用于在宽范围的柴油发动机应用中提高性能并提高装置的过滤效率。

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