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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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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：US06826903B2
公开(公告)日：2004-12-07
申请号：US10440140
申请日：2003-05-19
IPC分类号： F01N300
摘要： An exhaust gas recirculation (EGR) system of an internal combustion engine has an EGR cooler in an EGR passage connecting an exhaust manifold with an intake manifold. The EGR cooler cools EGR gas recirculated through the EGR passage. Cooling performance detecting means included in an electronic control unit (ECU) determines that cooling performance of the EGR cooler is degraded when intake pressure measured by an intake pressure sensor is lower than a normal intake pressure by at least a predetermined value. When the degradation of the cooling performance is detected, cooling performance regeneration controlling means included in the ECU increases the temperature inside the EGR cooler by heating the exhaust gas to eliminate soot or unburned hydrocarbon by oxidization. Thus, the cooling performance of the EGR cooler is regenerated.
摘要翻译： 内燃机的废气再循环（EGR）系统在排气歧管与进气歧管连接的EGR通路中具有EGR冷却器。 EGR冷却器冷却通过EGR通道再循环的EGR气体。 包括在电子控制单元（ECU）中的冷却性能检测装置确定当由进气压力传感器测量的进气压力低于正常进气压力至少预定值时，EGR冷却器的冷却性能降低。 当检测到冷却性能的劣化时，包括在ECU中的冷却性能再生控制装置通过加热废气以通过氧化来消除烟灰或未燃烧的烃来增加EGR冷却器内部的温度。 因此，再生EGR冷却器的冷却性能。
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公开(公告)号：US06951100B2
公开(公告)日：2005-10-04
申请号：US10722569
申请日：2003-11-28
CPC分类号： F02D41/029 , F01N9/002 , F01N2330/06 , F01N2430/06 , F01N2430/08 , F01N2430/085 , F01N2510/065 , F02D41/0055 , F02D41/1446 , F02D41/1448 , F02D41/187 , F02D2200/0812 , F02D2200/602 , F02M26/13
摘要： An electronic control unit (an ECU) detects an operating condition of an engine and quantity of particulate matters accumulated in a diesel particulate filter (a DPF) having an oxidation catalyst from a pressure difference across the DPF. The ECU operates temperature increasing means for regenerating the DPF based on the above detection results. During a low speed and light load operation, the ECU does not perform temperature increasing operation similar to an operation performed during a middle load operation. Instead, the ECU performs operation such as reduction of recirculated exhaust gas quantity in order to inhibit an increase in the quantity of the accumulated particulate matters. When the operating condition is changed afterward, the temperature increasing means is operated, so safe regeneration of the DPF is achieved.
摘要翻译： 电子控制单元（ECU）从DPF的压力差检测发动机的运转状态和积聚在具有氧化催化剂的柴油机微粒过滤器（DPF）中的颗粒物质的量。 ECU根据上述检测结果，操作升温装置，再生DPF。 在低速轻负载操作期间，ECU不执行类似于在中间负载操作期间执行的操作的升温操作。 替代地，ECU执行诸如减少再循环废气量的操作，以便抑制积聚的颗粒物质的量的增加。 当操作条件变化之后，升温装置被操作，从而实现了DPF的安全再生。
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5.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：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：US07197868B2
公开(公告)日：2007-04-03
申请号：US10923776
申请日：2004-08-24
申请人： Shigeto Yahata , Makoto Saito , Masumi Kinugawa
发明人： Shigeto Yahata , Makoto Saito , Masumi Kinugawa
IPC分类号： F01N3/00
CPC分类号： B01D46/0086 , B01D2279/30 , F01N3/035 , F01N9/002 , F01N2900/0422 , F02B37/00 , F02D41/029 , F02D41/401 , F02D41/405 , F02D2200/0812 , Y02T10/47 , Y10S55/30
摘要： An electronic control unit estimates progress of growth in a particle diameter of an ash accumulated in a diesel particulate filter (a DPF), based on an operating state of an engine. If it is determined that an estimated particle diameter of the ash achieved through the progress of the growth is greater than a predetermined value, regeneration of the DPF is compulsorily performed even when a quantity of particulate matters accumulated in the DPF is lower than a reference value, at which the DPF should be regenerated. Thus, the particulate matters are eliminated through combustion, and the ashes are discharged from the DPF.
摘要翻译： 电子控制单元基于发动机的运行状态来估计累积在柴油机微粒过滤器（DPF）中的灰分的粒径的增长的进度。 如果确定通过生长进程实现的灰分的估计粒径大于预定值，则即使当积聚在DPF中的颗粒物质的量低于参考值时也强制执行DPF的再生 ，DPF应重新生成。 因此，通过燃烧消除了颗粒物质，灰尘从DPF中排出。
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公开(公告)号：US20050044846A1
公开(公告)日：2005-03-03
申请号：US10923776
申请日：2004-08-24
申请人： Shigeto Yahata , Makoto Saito , Masumi Kinugawa
发明人： Shigeto Yahata , Makoto Saito , Masumi Kinugawa
IPC分类号： F02D45/00 , B01D46/00 , B01D46/42 , F01N3/02 , F01N3/035 , F01N9/00 , F02B37/00 , F02D41/02 , F02D41/40 , F01N3/00
CPC分类号： B01D46/0086 , B01D2279/30 , F01N3/035 , F01N9/002 , F01N2900/0422 , F02B37/00 , F02D41/029 , F02D41/401 , F02D41/405 , F02D2200/0812 , Y02T10/47 , Y10S55/30
摘要： An electronic control unit estimates progress of growth in a particle diameter of an ash accumulated in a diesel particulate filter (a DPF), based on an operating state of an engine. If it is determined that an estimated particle diameter of the ash achieved through the progress of the growth is greater than a predetermined value, regeneration of the DPF is compulsorily performed even when a quantity of particulate matters accumulated in the DPF is lower than a reference value, at which the DPF should be regenerated. Thus, the particulate matters are eliminated through combustion, and the ashes are discharged from the DPF.
摘要翻译： 电子控制单元基于发动机的运行状态来估计累积在柴油机微粒过滤器（DPF）中的灰分的粒径的增长的进度。 如果确定通过生长进行实现的灰分的估计粒径大于预定值，则即使当积聚在DPF中的颗粒物质的量低于参考值时也强制进行DPF的再生 ，DPF应重新生成。 因此，通过燃烧消除了颗粒物质，灰尘从DPF中排出。
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9.发明授权Exhaust gas filter regenerating apparatus effectively burning particulate material 失效废气过滤器再生装置有效地燃烧颗粒物质公开(公告)号：US06854265B2
公开(公告)日：2005-02-15
申请号：US10337895
申请日：2003-01-08
申请人： Makoto Saito , Shigeto Yahata , Masumi Kinugawa
发明人： Makoto Saito , Shigeto Yahata , Masumi Kinugawa
IPC分类号： F02M25/07 , F01N3/02 , F01N3/025 , F01N3/027 , F01N9/00 , F02D9/02 , F02D21/08 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/38 , F02D43/00 , F01N3/00
CPC分类号： F02D41/1448 , F01N3/025 , F01N3/027 , F01N9/002 , F01N2330/06 , F01N2430/06 , F01N2430/085 , F01N2900/0421 , F02D41/029 , F02D41/1446 , F02D41/187 , F02D41/38 , F02D2041/0017 , F02D2041/0022 , Y02T10/47 , Y10S55/30
摘要： Particulate material collected in a filter (PM) is burnt through a selected one of partial and perfect regenerating processes. The partial regenerating process starts, when an amount of PM is predicted to exceed a value between 2 to 10 g/l, and terminates, when the amount of PM is predicted to fall below a value between 1 to 4 g/l, whereby a part of PM is burned to an extent that incombustible ash contained in the filter (ASH) can not easily pass through the filter. The perfect regenerating process starts, when an amount of ASH is predicted to exceed a value between 0.05 to 0.25 g/l, and terminates, when the amount of PM is predicted to fall below 1 g/l, whereby a substantially entire part of PM is burnt to an extent that ASH can easily pass through the filter.
摘要翻译： 在过滤器（PM）中收集的颗粒材料通过选择的部分和完美的再生过程中的燃烧。 当预测PM的量超过2至10g / l的值时，部分再生过程开始，并且当PM的量被预测为低于1至4g / l之间的值时终止，从而a PM的一部分燃烧到过滤器（ASH）中包含的不可燃灰不能容易地通过过滤器的程度。 当预测ASH的量超过0.05至0.25g / l的值时，完美的再生过程开始，并且当预测PM的量低于1g / l时终止，从而PM的基本上全部部分 被燃烧到ASH可以容易地通过过滤器的程度。
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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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