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    Apparatus for sensing particulates in a gas flow stream
    1.
    发明申请
    Apparatus for sensing particulates in a gas flow stream 有权
    用于感测气流中的微粒的装置

    公开(公告)号：US20070163233A1

    公开(公告)日：2007-07-19

    申请号：US11335221

    申请日：2006-01-19

    Applicant: Shi-Wai Cheng

    Inventor： Shi-Wai Cheng

    IPC: F01N3/00 ,  F01N7/00

    CPC classification number: F01N11/00 ,  F01N3/021 ,  F01N11/002 ,  F01N2330/60 ,  F01N2560/05 ,  F01N2560/06 ,  F01N2560/20 ,  Y02T10/20 ,  Y02T10/47

    Abstract: A particulate sensor for sensing the presence of particulates in a gas flow stream is disclosed. The particulate sensor includes a housing having a flow divider to provide a first flow path and a second flow path. A heater is disposed and configured to provide uniform heating of the two flow paths. A first temperature sensor is disposed in the first flow path downstream of the heater. A second temperature sensor is disposed in the second flow path downstream of the heater. A fine filter is disposed within the second flow path and is configured to trap carbonaceous particulates.

    Abstract translation: 公开了一种用于感测气流中存在微粒的微粒传感器。 颗粒传感器包括具有分流器以提供第一流动路径和第二流动路径的壳体。 加热器被设置和配置成提供两个流动路径的均匀加热。 第一温度传感器设置在加热器下游的第一流路中。 第二温度传感器设置在加热器下游的第二流路中。 精细过滤器设置在第二流动路径内并且构造成捕获碳质颗粒。

    APPARATUS AND METHOD FOR LESSENING THE ACCUMULATION OF HIGH BOILING FRACTION FROM FUEL IN INTAKE VALVES OF COMBUSTION ENGINES
    2.
    发明申请
    APPARATUS AND METHOD FOR LESSENING THE ACCUMULATION OF HIGH BOILING FRACTION FROM FUEL IN INTAKE VALVES OF COMBUSTION ENGINES 有权
    用于燃烧燃料中燃烧高浓度燃料积聚的装置和方法

    公开(公告)号：US20050087164A1

    公开(公告)日：2005-04-28

    申请号：US10691364

    申请日：2003-10-22

    Applicant: Shi-Wai Cheng

    Inventor： Shi-Wai Cheng

    IPC: F01L3/00 ,  F01L3/08 ,  F01L3/12 ,  F01L3/24

    CPC classification number: F01L3/24 ,  F01L3/08

    Abstract: An intake valve for a combustion engine having an intake port is disclosed. The intake valve includes a valve guide having an end proximate the intake port, a valve shield extending from the end of the valve guide and into the intake port, and a valve stem arranged proximate the valve guide and valve shield. The valve guide and valve stem define a first clearance dimension therebetween, and the valve shield and valve stem define a second clearance dimension therebetween, wherein the second clearance dimension is equal to or greater than the first clearance dimension.

    Abstract translation: 公开了一种具有进气口的内燃机的进气阀。 进气阀包括具有靠近进气口的一端的阀导管，从阀导向件的端部延伸并进入进气口的阀屏蔽件，以及靠近阀导向器和阀屏蔽设置的阀杆。 阀引导件和阀杆在其间限定第一间隙尺寸，并且阀屏蔽件和阀杆在其间限定第二间隙尺寸，其中第二间隙尺寸等于或大于第一间隙尺寸。

    EXHAUST PARTICULATE FILTER
    3.
    发明申请
    EXHAUST PARTICULATE FILTER 有权
    废气颗粒过滤器

    公开(公告)号：US20070266701A1

    公开(公告)日：2007-11-22

    申请号：US11833558

    申请日：2007-08-03

    Applicant: Shi-Wai Cheng

    Inventor： Shi-Wai Cheng

    IPC: F01N3/00

    CPC classification number: F01N3/0253 ,  F01N3/0222 ,  F01N3/0231 ,  F01N3/027 ,  F01N3/035 ,  F01N9/002 ,  F01N2330/06 ,  F01N2510/0682 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2570/10 ,  F01N2610/03 ,  F02B37/00 ,  Y02T10/47

    Abstract: A method and system is disclosed for regenerating a particulate filter for an exhaust system. A source of hydrocarbon is injected into the exhaust flow upstream of the filter. The injected hydrocarbon within the filter is caused to oxidize and a temperature within the filter to rise, the temperature rise being initiated at a downstream end of the filter. A temperature change at the filter is sensed in response to the oxidation of the hydrocarbon. The amount of hydrocarbon being injected into the filter is adjusted to increase the temperature within the filter above a defined threshold from the downstream end to an upstream end of the filter, the defined threshold temperature being sufficient to oxidize soot. An operational parameter indicative of the filter regeneration being complete is sensed, and further injection of the hydrocarbon into the exhaust flow is prevented in response to the sensed operational parameter.

    Abstract translation: 公开了用于再生用于排气系统的颗粒过滤器的方法和系统。 将烃源注入过滤器上游的排气流中。 过滤器内的注入的碳氢化合物被氧化并且过滤器内的温度升高，温度升高是在过滤器的下游端开始的。 响应于烃的氧化来检测过滤器处的温度变化。 调节注入到过滤器中的碳氢化合物的量，以将过滤器内的温度升高到从过滤器的下游端到上游端的规定阈值之上，所定义的阈值温度足以氧化烟灰。 感测到指示过滤器再生完成的操作参数，并且响应于感测的操作参数来防止进入排气流中的烃的进一步注入。

    Exhaust particulate filter
    5.
    发明申请
    Exhaust particulate filter 失效
    排气微粒过滤器

    公开(公告)号：US20070044458A1

    公开(公告)日：2007-03-01

    申请号：US11335222

    申请日：2006-01-19

    Applicant: Shi-Wai Cheng

    Inventor： Shi-Wai Cheng

    IPC: F01N3/00 ,  F01N3/10

    CPC classification number: F01N3/027 ,  F01N3/0222 ,  F01N3/0231 ,  F01N3/035 ,  F01N2330/06 ,  F01N2510/0682 ,  F02B37/00

    Abstract: A particulate filter for an exhaust system configured to receive an exhaust flow is disclosed. The filter includes a wall-flow filtration element having a first regeneration zone and a second regeneration zone, the first zone being downstream of the second zone, and a heat source disposed at the first regeneration zone. In response to demand for regeneration, the wall-filtration element regenerates according to a staged regeneration such that the first zone initiates regeneration ahead of the second zone, and each zone regenerates in the direction of the exhaust flow.

    Abstract translation: 公开了一种用于接收废气流的排气系统的微粒过滤器。 过滤器包括具有第一再生区和第二再生区的壁流过滤元件，第一区位于第二区的下游，以及设置在第一再生区的热源。 响应于再生的需要，壁过滤元件根据分级再生再生，使得第一区域在第二区域之前启动再生，并且每个区域在排气流的方向上再生。

    Reductant distributor for lean NOx trap
    6.
    发明申请
    Reductant distributor for lean NOx trap 有权

    公开(公告)号：US20060123771A1

    公开(公告)日：2006-06-15

    申请号：US11009527

    申请日：2004-12-10

    Applicant: Shi-Wai Cheng

    Inventor： Shi-Wai Cheng

    IPC: F01N3/00

    CPC classification number: F01N3/0885 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N2610/03 ,  F01N2610/1453 ,  Y02T10/24

    Abstract: A lean NOx trap operating in a lean NOx exhaust stream is progressively regenerated, sector to sector, for efficient operation of the trap and conservation of reducing gas used in the regeneration. A reductant gas distributor is inserted in the exhaust upstream of the trap. Reductant gas is carried into the exhaust duct through a conduit portion and the reductant gas stream diverged and directed through a distributor into selected cells of the trap. The NOx in the selected cells is reduced to N2 while lean NOx exhaust continues to flow through the remainder of the trap. By relative movement of the reductant gas distributor and the trap, the entire trap is progressively and continually regenerated while still preforming as a NOx trap.

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