公开(公告)号：US20190353065A1

公开(公告)日：2019-11-21

申请号：US16476271

申请日：2017-01-24

申请人： Qunlong Dong ,  Chun Tai ,  VOLVO TRUCK CORPORATION

发明人： Qunlong DONG ,  Chun TAI

IPC分类号： F01N3/021 ,  F01N3/10

摘要： A method and engine arrangement are provided for monitoring components in an exhaust aftertreatment system (EATS) including a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and a selective catalytic reduction catalyst (SCR). A first 02 level is measured at a first location between the DOC and the DPF, a second 02 level is measured at a second location downstream of the SCR, a first NOx level is measured at. the first location, a second NOx level is measured at the second location, SCR efficiency is calculated based on the first and second NOx levels, and whether the DOC, the DPP. and the SCR are functioning property is determined based on whether the first 02 level is within a first 0:2 target, whether the second 02 level is within a second 02 target, and whether SCR efficiency is within an SCR efficiency target.

公开(公告)号：US09115631B2

公开(公告)日：2015-08-25

申请号：US14400604

申请日：2012-06-13

申请人： Qunlong Dong ,  Chun Tal

发明人： Qunlong Dong ,  Chun Tal

IPC分类号： F01N3/00 ,  F01N11/00 ,  F01N3/021 ,  F01N3/20 ,  F01N3/10 ,  F01N13/00

CPC分类号： F01N11/002 ,  F01N3/021 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N13/0097 ,  F01N2550/02 ,  F01N2550/04 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/1618 ,  F01N2900/1621 ,  F01N2900/1812 ,  Y02T10/24 ,  Y02T10/47

摘要： Components in an exhaust after treatment system (EATS) for a diesel engine are monitored by measuring heat released (QDOC) across a diesel oxidation catalyst (DOC) and heat released (QEATS) across the DOC and a diesel particulate filter (DPF) during an A Hi injection event, by calculating heat input from AHI fuel (QAHI) during performance of the AH I injection event with a fully functioning AHI nozzle, and by measuring NOX conversion efficiency (nSCR) from NOX to N2 by a selective catalytic reduction system (SCR) at a condition where a SCR is sensitive to feeding gas compositions while AHI is not in use. Malfunctioning components are identified using these measurements and calculations.

摘要翻译： 柴油发动机排气后处理系统（EATS）中的组分通过测量跨过DOC的柴油机氧化催化剂（DOC）和排放的热释放（QEATS）的热释放（QDOC）和柴油机微粒过滤器（DPF） 通过在具有完全功能的AHI喷嘴的AH I喷射事件执行期间通过计算从AHI燃料（QAHI）的热输入，以及通过选择性催化还原系统测量NOX转化为N 2的NO x转化效率（nSCR） SCR），其中SCR在不使用AHI的情况下对进料气体组成敏感。 使用这些测量和计算来识别故障组件。

公开(公告)号：US20150167517A1

公开(公告)日：2015-06-18

申请号：US14409286

申请日：2012-06-21

申请人： Qunlong Dong ,  Jeffrey Marley

发明人： Qunlong Dong ,  Jeffrey Marley

IPC分类号： F01N3/029 ,  G01N33/00 ,  G01M15/10

CPC分类号： F01N3/029 ,  F01N3/023 ,  F01N3/103 ,  F01N9/00 ,  F01N9/002 ,  F01N9/005 ,  F01N11/00 ,  F01N13/009 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2900/1606 ,  F02D41/0235 ,  F02D41/029 ,  F02D41/1445 ,  F02D41/1446 ,  F02D41/1448 ,  F02D41/1454 ,  F02D41/146 ,  F02D41/1467 ,  F02D2200/0414 ,  F02D2200/0618 ,  F02D2200/0812 ,  F02D2200/101 ,  G01M15/106 ,  G01N33/0037 ,  Y02A50/245 ,  Y02A50/25 ,  Y02T10/47

摘要： A method is provided for detecting abnormally frequent diesel particulate filter (DPF) regeneration. The method includes measuring a pressure drop across the DPF and using the measured pressure drop to calculate a pressure drop based soot load estimate, calculating soot output from an engine model and using the calculated soot output to calculate an emissions based soot load estimate, comparing the pressure drop based soot load estimate with the emissions based soot load estimate, and providing a warning if a difference between the pressure drop based soot load estimate and the emissions based soot load estimate exceeds a predetermined

摘要翻译： 提供了一种用于检测异常柴油颗粒过滤器（DPF）再生的方法。 该方法包括测量跨越DPF的压降，并使用测量的压降来计算基于压降的烟灰负荷估计，计算发动机模型的烟灰输出并使用所计算的烟灰输出来计算基于烟气负荷估计的排放，比较 基于排放量的烟灰负荷估计的基于压降的烟灰负荷估计，并且如果基于压降的烟灰负荷估计与基于烟度的排放负荷估计之间的差异超过预定的烟炱负荷估计，则提供警告

公开(公告)号：US10851692B2

公开(公告)日：2020-12-01

申请号：US16476271

申请日：2017-01-24

申请人： VOLVO TRUCK CORPORATION ,  Qunlong Dong ,  Chun Tai

发明人： Qunlong Dong ,  Chun Tai

IPC分类号： F01N11/00 ,  F01N3/021 ,  F01N3/10 ,  F01N3/20

摘要： A method and engine arrangement are provided for monitoring components in an exhaust aftertreatment system (EATS) including a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and a selective catalytic reduction catalyst (SCR). A first O2 level is measured at a first location between the DOC and the DPF, a second O2 level is measured at a second location downstream of the SCR, a first NOx level is measured at, the first location, a second NOx level is measured at the second location, SCR efficiency is calculated based on the first and second NOx levels, and whether the DOC, the DPP. and the SCR are functioning property is determined based on whether the first O2 level is within a first O:2 target, whether the second O2 level is within a second O2 target, and whether SCR efficiency is within an SCR efficiency target.

公开(公告)号：US09482124B2

公开(公告)日：2016-11-01

申请号：US14409286

申请日：2012-06-21

申请人： Qunlong Dong ,  Jeffrey Marley

发明人： Qunlong Dong ,  Jeffrey Marley

IPC分类号： F01N3/023 ,  F01N11/00 ,  F01N3/029 ,  F01N3/10 ,  F01N9/00 ,  F02D41/14 ,  F02D41/02 ,  G01M15/10 ,  G01N33/00 ,  F01N13/00

CPC分类号： F01N3/029 ,  F01N3/023 ,  F01N3/103 ,  F01N9/00 ,  F01N9/002 ,  F01N9/005 ,  F01N11/00 ,  F01N13/009 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2900/1606 ,  F02D41/0235 ,  F02D41/029 ,  F02D41/1445 ,  F02D41/1446 ,  F02D41/1448 ,  F02D41/1454 ,  F02D41/146 ,  F02D41/1467 ,  F02D2200/0414 ,  F02D2200/0618 ,  F02D2200/0812 ,  F02D2200/101 ,  G01M15/106 ,  G01N33/0037 ,  Y02A50/245 ,  Y02A50/25 ,  Y02T10/47

摘要： A method is provided for detecting abnormally frequent diesel particulate filter (DPF) regeneration. The method includes measuring a pressure drop across the DPF and using the measured pressure drop to calculate a pressure drop based soot load estimate, calculating soot output from an engine model and using the calculated soot output to calculate an emissions based soot load estimate, comparing the pressure drop based soot load estimate with the emissions based soot load estimate, and providing a warning if a difference between the pressure drop based soot load estimate and the emissions based soot load estimate exceeds a predetermined.

摘要翻译： 提供了一种用于检测异常柴油颗粒过滤器（DPF）再生的方法。 该方法包括测量跨越DPF的压降，并使用测量的压降来计算基于压降的烟灰负荷估计，计算发动机模型的烟灰输出并使用所计算的烟灰输出来计算基于烟气负荷估计的排放，比较 基于基于排放的烟灰负荷估计的基于压降的烟灰负荷估计，并且如果基于压降的烟灰负荷估计和基于排放的烟灰负荷估计之间的差异超过预定值则提供警告。

公开(公告)号：US20150192050A1

公开(公告)日：2015-07-09

申请号：US14414547

申请日：2012-07-26

申请人： Philip Meier ,  Walter Jacques ,  Qunlong Dong

发明人： Philip Meier ,  Walter Jacques ,  Qunlong Dong

IPC分类号： F01N3/20 ,  F01N11/00

CPC分类号： F01N3/2033 ,  F01N3/206 ,  F01N9/00 ,  F01N11/002 ,  F01N2610/03 ,  F01N2610/08 ,  F01N2610/146 ,  F01N2610/1493 ,  F01N2900/1404 ,  Y02T10/47

摘要： A method for operating an exhaust aftertreatment system injector to prevent coking includes steps of injecting fuel for heating the aftertreatment devices, when not injecting fuel, flowing air to purge and cool the nozzle to prevent carbon deposits when exhaust gas temperature is low, and substantially stop air flow to allow passive heating of the nozzle by the exhaust for oxidation of any accumulated carbon when exhaust temperature is high enough to support oxidation. Preferably, the nozzle has a catalytic material coating to reduce the temperature necessary for oxidation of the coking material.

摘要翻译： 用于操作排气后处理系统喷射器以防止焦化的方法包括喷射用于加热后处理装置的燃料的步骤，当不喷射燃料时，流动空气以吹扫和冷却喷嘴以防止排气温度低时的碳沉积，并且基本上停止 空气流动，以允许当废气温度足够高以支持氧化时通过排气来对喷嘴进行被动加热以氧化任何累积的碳。 优选地，喷嘴具有催化材料涂层以降低焦化材料氧化所需的温度。

公开(公告)号：US20150096283A1

公开(公告)日：2015-04-09

申请号：US14400604

申请日：2012-06-13

申请人： Qunlong Dong ,  Chun Tal

发明人： Qunlong Dong ,  Chun Tal

IPC分类号： F01N11/00 ,  F01N3/20 ,  F01N3/021

CPC分类号： F01N11/002 ,  F01N3/021 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N13/0097 ,  F01N2550/02 ,  F01N2550/04 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/1618 ,  F01N2900/1621 ,  F01N2900/1812 ,  Y02T10/24 ,  Y02T10/47

摘要： Components in an exhaust after treatment system (EATS) for a diesel engine are monitored by measuring heat released (QDOC) across a diesel oxidation catalyst (DOC) and heat released (QEATS) across the DOC and a diesel particulate filter (DPF) during an A Hi injection event, by calculating heat input from AHI fuel (QAHI) during performance of the AH I injection event with a fully functioning AHI nozzle, and by measuring NOX conversion efficiency (nSCR) from NOX to N2 by a selective catalytic reduction system (SCR) at a condition where a SCR is sensitive to feeding gas compositions while AHI is not in use. Malfunctioning components are identified using these measurements and calculations.

摘要翻译： 柴油发动机排气后处理系统（EATS）中的组分通过测量跨过DOC的柴油机氧化催化剂（DOC）和排放的热释放（QEATS）的热释放（QDOC）和柴油机微粒过滤器（DPF） 通过在具有完全功能的AHI喷嘴的AH I喷射事件执行期间通过计算从AHI燃料（QAHI）的热输入，以及通过选择性催化还原系统测量NOX转化为N 2的NO x转化效率（nSCR） SCR），其中SCR在不使用AHI的情况下对进料气体组成敏感。 使用这些测量和计算来识别故障组件。