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公开(公告)号：US07146804B2
公开(公告)日：2006-12-12
申请号：US10460208
申请日：2003-06-13
IPC分类号： F01N3/00
CPC分类号： F02D41/1448 , F01N3/023 , F01N9/002 , F02B29/0406 , F02B37/00 , F02D41/0007 , F02D41/029 , F02D41/1446 , F02D41/187 , F02D2200/0812 , F02D2200/501 , F02M26/15 , F02M26/23 , Y02T10/144 , Y02T10/47
摘要： An exhaust gas cleaning system for a diesel engine has a diesel particulate filter (DPF) disposed in an exhaust pipe. An electronic control unit of the system controls regeneration of the DPF. The DPF is heated and regenerated only when an operating state of the engine is in an area where temperature-increasing efficiency is high, in the case where a quantity of particulate matters collected by the DPF is equal to or greater than a first threshold and is less than a second threshold. The second threshold is greater than the first threshold. If the quantity of the collected particulate matters becomes equal to or greater than the second threshold, the regeneration is performed even if the operating state is not in the area of the high temperature-increasing efficiency.
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2.发明授权Exhaust gas filtering system having particulate filter for internal combustion engine 有权具有用于内燃机的微粒过滤器的废气过滤系统公开(公告)号：US06969413B2
公开(公告)日：2005-11-29
申请号：US10459556
申请日：2003-06-12
CPC分类号： B01D46/2418 , B01D46/0063 , B01D46/446 , B01D46/46 , B01D2279/30 , F02D41/0002 , F02D41/029 , F02D41/123 , Y02T10/42 , Y10S55/10 , Y10S55/30
摘要： A flow rate of gas supplied to a diesel particulate filter is increased when it is determined that rapid combustion of collected particulates, which are collected by the particulate filter, is likely to occur based on an operating state of an internal combustion engine. Alternatively, the flow rate of gas supplied to the filter is increased when it is determined that rapid combustion of the collected particulates is initiated based on a state of the particulate filter.
摘要翻译： 当确定基于内燃机的运行状态可能发生由颗粒过滤器收集的收集的颗粒的快速燃烧时，提供给柴油微粒过滤器的气体的流量增加。 或者，当确定基于颗粒过滤器的状态开始收集的微粒的快速燃烧时，提供给过滤器的气体的流量增加。
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公开(公告)号：US06829889B2
公开(公告)日：2004-12-14
申请号：US10460191
申请日：2003-06-13
IPC分类号： F01N300
CPC分类号： F01N9/005 , F01N9/002 , F01N11/00 , F01N11/002 , F01N11/005 , F01N2330/06 , F01N2430/085 , F01N2510/065 , F01N2550/00 , F02D41/029 , F02D41/1448 , F02D41/187 , F02D2200/0812 , Y02T10/47
摘要： The recycling timing schedule for a diesel particulate filter (DPF) can be easily and accurately determined. There is a differential pressure sensor that detects differential pressure &Dgr;P in the DPF, and an airflow meter that detects the flow velocity v in an exhaust path. An ECU calculates the quantity of deposited fine exhaust particles ML according to: ML=[&Dgr;P−(A&mgr;v+C&rgr;v2)]/(B&mgr;v+D&rgr;v2) Recycling of the filter is determined according to a determination formula used to compare the calculated deposited quantity ML to a reference quantity. In this way, the deposited quantity can be accurately obtained without using a map.
摘要翻译： 柴油颗粒过滤器（DPF）的回收时间表可以容易且准确地确定。 有一个差压传感器，用于检测DPF中的差压DeltaP，以及一个气流计，用于检测排气路径中的流速v。 ECU根据以下计算沉积的细排气颗粒ML的量：根据用于将计算出的沉积量ML与参考量进行比较的确定公式来确定过滤器的循环。 以这种方式，可以在不使用地图的情况下准确地获得沉积量。
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公开(公告)号：US06962046B2
公开(公告)日：2005-11-08
申请号：US10461394
申请日：2003-06-16
IPC分类号： F02D45/00 , B01D46/42 , F01N3/02 , F01N3/023 , F01N3/035 , F01N3/20 , F01N9/00 , F01N11/00 , F02D41/02 , F02D41/14 , F01N3/00
CPC分类号： F02D41/1448 , F01N3/023 , F01N3/035 , F01N9/002 , F01N11/002 , F01N2430/08 , F01N2430/085 , F02D41/029 , F02D41/1446 , F02D41/187 , F02D2200/0812 , Y02T10/47 , Y10S55/30
摘要： An electronic control unit (ECU) of an exhaust gas cleaning system for an internal combustion engine having a diesel particulate filter (DPF) determines whether collection quantity of exhaust particulate matters collected by the DPF is greater than a regeneration start value or not. The collection quantity is calculated from a pressure difference at the DPF and a flow rate of exhaust gas. If the collection quantity is determined to be greater than the regeneration start value, the ECU increases the temperature of the DPF to regenerate the DPF. The regeneration start value is set smaller as the detection accuracy of the collection quantity decreases. The regeneration start value is set smaller as the exhaust gas flow rate decreases and a rate of change in an accelerator position increases.
摘要翻译： 用于具有柴油机微粒过滤器（DPF）的内燃机排气净化系统的电子控制单元（ECU）确定由DPF收集的废气颗粒物质的收集量是否大于再生开始值。 收集量由DPF的压力差和排气的流量计算。 如果收集量被确定为大于再生开始值，则ECU增加DPF的温度以再生DPF。 随着收集量的检测精度降低，再生开始值被设定得更小。 随着废气流量的降低，加速器位置的变化率的增加，再生开始值被设定得较小。
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公开(公告)号：US06758039B2
公开(公告)日：2004-07-06
申请号：US10460207
申请日：2003-06-13
IPC分类号： F01N302
CPC分类号： F02D41/1445 , F01N3/023 , F01N3/035 , F01N9/002 , F01N11/002 , F01N2430/085 , F01N2900/0421 , F01N2900/0422 , F02D41/029 , F02D41/1448 , F02D41/187 , F02D2200/0404 , F02D2200/0812 , Y02T10/47
摘要： In an exhaust gas cleaning system of an internal combustion engine having a diesel particulate filter (DPF), measuring accuracy of a collection quantity of particulate matters collected by the DPF is estimated based on an accelerator position change rate and an exhaust gas flow rate. When the measuring accuracy is high, the collection quantity is calculated based on a pressure difference and the exhaust gas flow rate at the DPF. If the measuring accuracy is low, an increment value of the collection quantity is calculated based on a quantity of the particulate matters discharged from an engine main body. Then, the collection quantity is calculated by adding the collection quantity increment value to the previous collection quantity calculated based on the pressure difference and the exhaust gas flow rate while the measuring accuracy is high.
摘要翻译： 在具有柴油机微粒过滤器（DPF）的内燃机的废气净化系统中，基于加速器位置变化率和废气流量来推定由DPF收集的颗粒物质的收集量的测量精度。 当测量精度高时，基于DPF的压力差和排气流量来计算收集量。 如果测量精度低，则基于从发动机主体排出的颗粒物的量来计算收集量的增量值。 然后，通过将采集量增量值与在测量精度高时基于压差和排气流量计算的先前收集量相加来计算收集量。
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公开(公告)号：US20060021334A1
公开(公告)日：2006-02-02
申请号：US11183961
申请日：2005-07-19
IPC分类号： F01N3/00
CPC分类号： F02D41/029 , F01N3/0231 , F01N9/002 , F02D2200/0812 , Y02T10/47
摘要： The amount of accumulated particulate matter, which is accumulated in a particulate filter, is computed based on the amount of exhausted particulate matter, which is exhausted from an engine, and the amount of reduced particulate matter, which is reduced in the filter. The amount of reduced particulate matter includes the amount of reduced particulate matter, which is reduced through oxidizing reaction of the accumulated particulate matter with NO2. At the time of computing this amount, reduction of the particulate matter through oxidizing reaction with adsorbed NO2, which is adsorbed by the accumulated particulate matter, is concerned in addition to reduction of the particulate matter through oxidizing reaction with NO2, which is present in the surrounding atmosphere around the accumulated particulate matter.
摘要翻译： 基于从发动机排出的排出的颗粒物质的量和在过滤器中减少的减少的颗粒物质的量来计算积聚在颗粒过滤器中的累积颗粒物的量。 减少的颗粒物质的量包括减少的颗粒物质的量，其通过NO 2的累积颗粒物质的氧化反应而减少。 在计算该量时，除了通过氧化反应还原颗粒物之外，还涉及通过被累积的颗粒物质吸附的吸附的NO 2氧化物反应的颗粒物质的减少 其中存在于累积颗粒物周围的周围大气中的NO 2 2。
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公开(公告)号：US06735941B2
公开(公告)日：2004-05-18
申请号：US10420867
申请日：2003-04-23
IPC分类号： F01N300
CPC分类号： F02D41/029 , F01N3/023 , F01N2330/06 , F02D2200/0812
摘要： An engine control unit of an exhaust gas purification system of an internal combustion engine measures a pressure difference between an upstream and a downstream of a diesel particulate filter (DPF) after heating the DPF at least to a predetermined temperature and maintaining the DPF at the temperature for a while. The DPF is disposed in an exhaust pipe of the engine. A soluble organic fraction included in particulate matters in exhaust gas can be eliminated at the predetermined temperature. The ECU calculates a quantity of the particulate matters trapped by the DPF from the measured pressure difference. Thus, the quantity of the trapped particulate matters is calculated precisely, independently of a composition of the particulate matters or a state of the soluble organic fraction.
摘要翻译： 内燃机的排气净化系统的发动机控制单元在DPF加热至少达到预定温度之后测量柴油机微粒过滤器（DPF）的上游和下游之间的压差，并将DPF维持在温度 一段时间。 DPF设置在发动机的排气管中。 废气中的颗粒物中包含的可溶性有机馏分可以在预定温度下消除。 ECU根据测量的压力差计算由DPF捕集的颗粒物质的量。 因此，与颗粒物质的组成或可溶性有机部分的状态无关地精确地计算被捕获的颗粒物质的量。
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公开(公告)号：US07051519B2
公开(公告)日：2006-05-30
申请号：US11183961
申请日：2005-07-19
IPC分类号： F01N3/00
CPC分类号： F02D41/029 , F01N3/0231 , F01N9/002 , F02D2200/0812 , Y02T10/47
摘要： The amount of accumulated particulate matter, which is accumulated in a particulate filter, is computed based on the amount of exhausted particulate matter, which is exhausted from an engine, and the amount of reduced particulate matter, which is reduced in the filter. The amount of reduced particulate matter includes the amount of reduced particulate matter, which is reduced through oxidizing reaction of the accumulated particulate matter with NO2. At the time of computing this amount, reduction of the particulate matter through oxidizing reaction with adsorbed NO2, which is adsorbed by the accumulated particulate matter, is concerned in addition to reduction of the particulate matter through oxidizing reaction with NO2, which is present in the surrounding atmosphere around the accumulated particulate matter.
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公开(公告)号：US20060048507A1
公开(公告)日：2006-03-09
申请号：US11220596
申请日：2005-09-08
IPC分类号： F01N3/00
CPC分类号： F02D41/029 , F01N3/023 , F01N3/035 , F01N9/002 , F01N11/002 , F02D41/1441 , F02D41/1448 , Y02T10/47
摘要： In an exhaust gas purifying apparatus for a diesel engine having a diesel particulate filter provided in an exhaust pipe, a pressure loss at the filter is detected. An accumulated amount of diesel particulates in the filter is calculated based on the pressure loss and a map for a relationship between the pressure loss and the accumulated amount. A compulsory re-generating operation is carried out when the calculated accumulated amount reaches at a predetermined threshold value, which is decreased to a smaller value depending on a combustion amount of the diesel particulates which are combusted and removed from the filter as a natural re-generating operation.
摘要翻译： 在具有设置在排气管中的柴油机微粒过滤器的柴油机废气净化装置中，检测过滤器处的压力损失。 基于压力损失和压力损失与累积量之间的关系的映射图来计算过滤器中的柴油微粒的累积量。 当计算出的累计量达到预定阈值时，根据从过滤器燃烧和除去的柴油微粒的燃烧量减少到较小值，进行强制再生作业， 生成操作。
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公开(公告)号：US06571765B2
公开(公告)日：2003-06-03
申请号：US10261627
申请日：2002-10-02
IPC分类号： F01L134
CPC分类号： F02D35/025 , F02B29/0406 , F02D15/00 , F02D41/0065 , F02D41/086 , F02D41/1446 , F02D41/401 , F02D2041/0067 , F02D2250/36 , F02M26/05 , F02M26/10 , F02M26/28 , F02M26/33 , Y02T10/44 , Y02T10/47
摘要： The engine control system has an ECU that supplies relatively large amount of EGR gas and delays an injection timing in order to decrease temperature in a combustion chamber. When an engine is operated under a warming up operation or a low engine load, the ECU deactivates an EGR cooler to increase intake air temperature in order to stabilize engine operation. When the engine is operated under a high engine load, the ECU activates the EGR cooler, delays a closing timing of an intake valve, and increases a boost pressure of a forced induction system. As a result, both of a compression end temperature and a maximum combustion temperature are decreased so that emissions of NOx and particulates are reduced.
摘要翻译： 发动机控制系统具有提供相对大量的EGR气体并延迟喷射正时以便降低燃烧室中的温度的ECU。 当发动机在预热操作或低发动机负荷下操作时，ECU停用EGR冷却器以增加进气温度，以稳定发动机运转。 当发动机在高发动机负荷下操作时，ECU启动EGR冷却器，延迟进气门的关闭时间，并且增加强制感应系统的增压压力。 结果，减小了压缩端温度和最大燃烧温度，从而降低了NOx和微粒的排放。
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