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公开(公告)号：US07404340B2
公开(公告)日：2008-07-29
申请号：US09905698
申请日：2001-07-10
IPC分类号： G01N1/00
CPC分类号： G01N15/0272 , G01M15/102 , G01N1/2202 , G01N1/2252 , G01N1/24 , G01N2001/2223
摘要： A gas sampling system 36 capable of testing and certifying internal combustion engines 16 under transient conditions is provided and includes a partial flow dilution tunnel 38, master and slave mass flow controllers 80,60 and a transient dilution air flow controlling arrangement 110. The transient dilution air flow controlling arrangement 110 measures the transient changes in intake air and varies the flow of diluent air to the partial flow dilution tunnel 38. By controlling the diluent air in this manner ensures that a particle sample can be taken at any time that is at a constant proportion to the exhaust flow rate.
摘要翻译： 提供能够在瞬态条件下测试和认证内燃机16的气体采样系统36，其包括部分流稀释通道38，主和从质量流量控制器80,60和瞬时稀释气流控制装置110.瞬时稀释 空气流量控制装置110测量进气的瞬时变化并改变稀释空气流向部分流稀释通道38的流动。通过以这种方式控制稀释空气确保可以在任何时候采集颗粒样品 与排气流量成正比。
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2.发明授权Dilution system test apparatus with added capability and method of operating same 有权具有附加功能的稀释系统测试装置和操作方法公开(公告)号：US08505395B2
公开(公告)日：2013-08-13
申请号：US12546744
申请日：2009-08-25
IPC分类号： G01N1/00
CPC分类号： G01N1/2252 , G01N1/2202 , G01N1/38 , G01N33/0018 , G01N33/0022 , G01N2001/2264
摘要： A partial dilution exhaust sampling system has an expanded ability to simultaneously perform two different evaluations on exhaust from a power source. Beyond testing for particulate matter production, the system may simultaneously evaluate exhaust for undesirable gaseous emissions such as NOx and carbon dioxide and/or concurrently evaluate particle size and distribution in the exhaust sample. After extracting sample flow from the exhaust stream of the power source and adding diluent to the sample flow, the diluted sample flow is divided into a first portion flow and a second portion flow. Depending upon whether the additional exhaust evaluation device is in parallel with the particulate measurement gravimetric filter or in series with the filter, a dilution flow actuator and/or an exit actuator may be adjusted to account for a fraction of diluted sample flow directed to the auxiliary exhaust evaluation device.
摘要翻译： 部分稀释排气采样系统具有扩展的能力，以同时对来自电源的排气进行两个不同的评估。 除了颗粒物质生产的测试之外，系统可以同时评估废气中的不期望的气体排放物，例如NOx和二氧化碳和/或同时评估废气样品中的粒度和分布。 在从电源的废气流中提取样品流并将稀释剂加入到样品流中之后，稀释的样品流被分成第一部分流和第二部分流。 取决于附加的废气评估装置是否与颗粒物测量重量过滤器并联或与过滤器串联，可以调节稀释流量致动器和/或出口致动器以解决指向辅助件的稀释样品流的一部分 排气评估装置。
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公开(公告)号：US06729195B2
公开(公告)日：2004-05-04
申请号：US09852815
申请日：2001-05-10
IPC分类号： G01N100
CPC分类号： G01N1/38 , G01N1/2205 , G01N1/2252 , G01N15/0205 , G01N15/065 , G01N2001/2264
摘要： An exhaust gas sampling system for use in connection with the sampling of an internal combustion engine exhaust gas streams has a plurality of diluters arranged in a serial array along an axial extent. A source of engine exhaust gas is fluidically connected to the plurality of serially arranged diluters so as to supply an engine exhaust gas stream into each one of the plurality of serially arranged diluters in a serial manner. A source of dilution air fluidically is connected to each one of the plurality of serially arranged diluters so as to supply dilution air into each one of the plurality of serially arranged diluters. The dilution air is supplied into the engine exhaust gas stream present within each one of the plurality of serially arranged diluters so as to progressively dilute the engine exhaust gas stream as the engine exhaust gas stream flows through the plurality of serially arranged diluters and thereby replicate engine exhaust gas stream pollutant atmospheric conditions, and sampling apparatus fluidically connected to each one of the plurality of serially arranged diluters for obtaining and analyzing a sample of diluted engine exhaust gas stream present within each one of the plurality of serially arranged diluters.
摘要翻译： 与内燃机废气流的取样结合使用的排气采样系统具有沿轴向排列成串联排列的多个稀释剂。 发动机废气源流体地连接到多个串列排列的稀释器，以便以串联的方式将发动机废气流提供给多个串联排列的稀释剂中的每一个。 稀释空气源流体地连接到多个连续排列的稀释剂中的每一个，以便将稀释空气供应到多个连续排列的稀释剂中的每一个中。 稀释空气被供应到存在于多个串联排列的每一个中的发动机废气流中，以便随着发动机废气流流过多个连续排列的稀释剂并逐渐稀释发动机废气流，从而复制发动机 废气流污染物大气条件和与多个串联排列的每一个流体连接的取样装置，用于获得和分析存在于多个连续排列的稀释剂中的每一个中的稀释的发动机废气流的样品。
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4.发明授权公开(公告)号：US07406885B2
公开(公告)日：2008-08-05
申请号：US11167788
申请日：2005-06-27
IPC分类号： G01N1/00
CPC分类号： G01N1/2252 , G01N2001/2264
摘要： A partial flow dilution tunnel in a gas sampling system is connected to the exhaust from an internal combustion engine. More accurate gas sampling results are enabled for accounting for a delay from when the engine produces an exhaust change to when that transient arrives at a probe location. Thus, an estimated time delay is determined, and the gas sampling system is operated at least in part based upon that estimated time delay for the exhaust to arrive at the sampling location.
摘要翻译： 气体采样系统中的部分流稀释通道连接到来自内燃机的排气。 启用更精确的气体采样结果，以计算从发动机产生排气变化到当瞬变到达探头位置时的延迟。 因此，确定估计的时间延迟，并且气体采样系统至少部分地基于用于到达采样位置的排气的估计时间延迟来操作。
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公开(公告)号：US5058440A
公开(公告)日：1991-10-22
申请号：US577226
申请日：1990-09-04
CPC分类号： G01N1/2252 , G01N1/24 , G01N1/38 , G01N2001/244
摘要： A gas sampling device includes a dilution tunnel of particularly effective construction that reduces contamination or soiling of the ducting leading to a filter assembly and improves the accuracy of the results. The gas sampling device has a sampling probe disposable in the gas stream of an engine or the like, and a controlled source of clean and pressurized diluent air. The dilution tunnel includes an air distribution tube defining a plurality of distribution holes therethrough, a collar defining a first annular chamber about the air distribution tube that is connected to the air source, and a porous center tube having a plurality of micron-sized pores connected between the sampling probe and the filter assembly. A second annular chamber is defined between both tubes, and the diluent air supplied thereto is uniformly passed through the porous center tube to effect good mixing of the exhaust gas and diluent air while providing a boundary layer of diluent air that keeps the center tube clean. An alternate embodiment gas sampling device employing master and slave mass flow controllers is also disclosed.
摘要翻译： 气体采样装置包括具有特别有效结构的稀释通道，其减少导致过滤器组件的管道的污染或污染，并提高结果的准确性。 气体采样装置具有在发动机等的气流中一次性使用的采样探针，以及清洁和加压的稀释空气的受控源。 稀释通道包括限定穿过其中的多个分配孔的空气分配管，限定连接到空气源的空气分配管周围的第一环形室的轴环和连接有多个微米尺寸孔的多孔中心管 在采样探头和过滤器组件之间。 在两个管之间限定第二环形室，并且供应到其中的稀释空气均匀地通过多孔中心管，以实现废气和稀释空气的良好混合，同时提供使中心管清洁的稀释空气的边界层。 还公开了采用主从质量流量控制器的替代实施例气体采样装置。
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6.发明授权Particulate sampling system and method of reducing oversampling during transients 有权微粒采样系统及其在瞬态过程中减少过采样的方法公开(公告)号：US08256307B2
公开(公告)日：2012-09-04
申请号：US12288962
申请日：2008-10-24
IPC分类号： G01N1/22
CPC分类号： G01N1/2252 , G01N2001/2264
摘要： Testing of engine particulate matter production during a transient is made more accurate by selecting an appropriate sized opening for a test probe of the sampling system located in the exhaust line upstream from a particulate trap. By examining the pressure signature at the test probe location and utilizing that information in conjunction with a desired volumetric flow rate into the sampling system, a flow opening size for the test probe can be selected that reduces potential oversampling which may be otherwise induced due to the back pressure increases in the exhaust line caused by the presence of the particulate trap. The flow opening into the test probe of the sampling system behaves relative unrestricted when pressure differentials at the test probe location are relatively low, such as during steady state operating conditions, but restricts flow into the sampling system when pressure differentials are relatively high, such as at a pressure during a transient event.
摘要翻译： 通过为位于微粒捕集器上游的排气管中的取样系统的测试探针选择适当尺寸的开口，使瞬态过程中的发动机颗粒物质生产测试更为准确。 通过检查测试探针位置处的压力特征并将该信息与所需的体积流速结合使用到采样系统中，可以选择用于测试探针的流动开口尺寸，其减少潜在的过采样，这可能由于 由于颗粒捕集器的存在引起的排气管道的背压增加。 当测试探头位置处的压力差相对较低时，例如在稳态运行条件下，采样系统的测试探头的流入口相对不受限制地行进，但是当压力差相对较高时限制进入采样系统的流量，例如 在瞬态事件期间的压力。
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公开(公告)号：US06752856B1
公开(公告)日：2004-06-22
申请号：US09302115
申请日：1999-04-29
IPC分类号： B01D5000
CPC分类号： F01M13/022 , B01D45/16 , B01D50/002 , F01M2013/0411 , F01M2013/0427 , F01M2013/0433 , F01M2013/0438 , Y10S55/19
摘要： An assembly for removing aerosol from crankcase gasses being returned to an air intake manifold is generally shown at and includes a housing having a housing wall defining a top portion and a base with at least one drain. An inlet line extends through the housing wall communicating with a crankcase. An outlet line extends through the top portion for communicating with an air intake manifold. An inertial separator generally shown at is attached to the inlet line and has a screen through which the crankcase gasses pass and an impacter plate for obstructing aerosol suspended in the gasses. A sheet wound in spaced convolutions to define a spiraled path from the exterior to a central space conveys gasses from the inertial separator to the central space. A thermal interception tube located in the central space receives gasses and has a tube wall for gasses to pass therethrough and an opening at one end for egress of gasses.
摘要翻译： 用于从返回到进气歧管的曲轴箱气体除去气溶胶的组件通常示出在并且包括壳体，壳体具有限定顶部的壳体壁和具有至少一个排水口的底座。 入口管线延伸穿过与曲轴箱连通的壳体壁。 出口管线延伸穿过顶部以与进气歧管连通。 通常示出的惯性分离器附接到入口管线并且具有通过曲轴箱气体通过的筛网和用于阻塞悬浮在气体中的气溶胶的搅拌板。 以间隔卷积缠绕以限定从外部到中心空间的螺旋路径的片材将气体从惯性分离器传送到中心空间。 位于中央空间的热拦截管接收气体，并具有用于气体通过的管壁和一端用于排出气体的开口。
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公开(公告)号：US06615677B2
公开(公告)日：2003-09-09
申请号：US09999710
申请日：2001-10-31
IPC分类号： G01N100
CPC分类号： G01N1/2252 , G01N1/2202 , G01N2001/2223 , G01N2001/2264 , G01N2015/0046
摘要： A method for controlling the dilution air supply to a partial flow dilution tunnel in a gas sampling system is provided. The gas sampling system is capable of testing and certifying internal combustion engines under transient conditions and includes a partial flow dilution tunnel, master and slave mass flow controllers and a transient dilution air flow controlling arrangement. The transient dilution air flow controlling arrangement measures the transient changes in intake air and varies the flow of diluent air to the partial flow dilution tunnel. By controlling the diluent air in this manner ensures that a particle sample can be taken at any time that is at a constant proportion to the exhaust flow rate.
摘要翻译： 提供了一种用于控制气体采样系统中的部分流稀释通道的稀释空气供应的方法。 气体采样系统能够在瞬态条件下对内燃机进行测试和认证，并包括部分流量稀释隧道，主从质量流量控制器和瞬时稀释气流控制装置。 瞬时稀释气流控制装置测量进气的瞬时变化，并改变稀释空气流向部分流稀释通道的流量。 通过以这种方式控制稀释剂空气确保可以在与排气流速成正比例的任何时间取出颗粒样品。
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公开(公告)号：US07549350B2
公开(公告)日：2009-06-23
申请号：US11353034
申请日：2006-02-14
IPC分类号： G01N1/20
CPC分类号： G01N1/2252 , G01N1/2202 , G01N1/24 , G01N15/0227 , G01N15/0266 , G01N15/0272 , G01N2001/2223 , G01N2001/2264
摘要： A dilution tunnel having a flow chamber structure with an inlet, an outlet, and an internal flow passage for a sample gas, the sample gas being adapted to flow in a flow direction between the inlet and the outlet. The flow chamber structure having a plurality of pores that communicate between an outside region external of the flow chamber structure and the internal flow passage. The pores are adapted to introduce a diluting gas from the outside region into the internal flow passage. The flow chamber structure is adapted to provide a diluting rate of the dilution tunnel that varies in the flow direction of the dilution tunnel.
摘要翻译： 一种具有流动室结构的稀释通道，其具有用于样品气体的入口，出口和内部流动通道，样品气体适于在入口和出口之间沿流动方向流动。 流动室结构具有在流动室结构外部的外部区域和内部流动通道之间连通的多个孔。 孔适于将稀释气体从外部区域引入内部流动通道。 流动室结构适于提供在稀释通道的流动方向上变化的稀释通道的稀释速率。
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公开(公告)号：US07243559B2
公开(公告)日：2007-07-17
申请号：US10692871
申请日：2003-10-24
IPC分类号： G01N1/00
CPC分类号： G01N15/0272 , G01M15/102 , G01N1/2202 , G01N1/2252 , G01N1/24 , G01N2001/2223
摘要： A gas sampling system 36 capable of testing and certifying internal combustion engines 16 under transient conditions is provided and includes a partial flow dilution tunnel 38, master and slave mass flow controllers 80,60 and a transient dilution air flow controlling arrangement 110. The transient dilution air flow controlling arrangement 110 measures the transient changes in intake air and varies the flow of diluent air to the partial flow dilution tunnel 38. By controlling the diluent air in this manner ensures that a particle sample can be taken at any time that is at a constant proportion to the exhaust flow rate.
摘要翻译： 提供能够在瞬态条件下测试和认证内燃机16的气体采样系统36，并且包括部分流稀释通道38，主和从质量流量控制器80,60和瞬时稀释气流控制装置110。 瞬时稀释气流控制装置110测量进气的瞬时变化并改变稀释空气流向部分流稀释通道38的流动。 通过以这种方式控制稀释剂空气确保可以在与排气流速成正比例的任何时间取出颗粒样品。
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