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公开(公告)号：US20160265411A1
公开(公告)日：2016-09-15
申请号：US15031032
申请日：2014-08-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihisa TSUKAMOTO , Kazuhiro ITOH , Hiromasa NISHIOKA , Daichi IMAI , Hiroshi OTSUKI , Yasumasa NOTAKE
CPC classification number: F01N9/002 , B01D46/2429 , B01D2046/2437 , F01N3/0222 , F01N3/0232 , F01N3/0238 , F01N3/0293 , F01N3/05 , F01N3/22 , F01N3/32 , F01N2330/06 , F01N2330/30 , F01N2330/60 , F01N2510/068 , F01N2900/0412 , F01N2900/1406 , F01N2900/1606 , F01N2900/1611 , F02D41/029 , F02D41/1445 , F02D2200/0812 , Y02T10/47
Abstract: Micropore zones ZMI are defined at upstream sides of partition walls 72 of a particulate filter and macropore zones ZMA are defined at downstream sides of partition walls. The pore size of the partition walls at the micropore zones is set so that the particulate matter and the ash can be trapped by the partition walls at the micropore zones, while the pore size of the partition walls at the macropore zones is set so that the ash can pass through the partition walls at the macropore zones. When a quantity of trapped particulate matter is smaller than a limit quantity, control for increasing gas which temporarily increases the flow rate of the gas which flows into the particulate filter in order to remove the ash from the particulate filter, is performed.
Abstract translation: 微孔区域ZMI被限定在颗粒过滤器的分隔壁72的上游侧，并且大孔区域ZMA被限定在分隔壁的下游侧。 微孔区域的隔壁的孔径被设定为使得微孔区域中的分隔壁可以捕获颗粒物质和灰分，同时将大孔区域的隔壁的孔径设定为使得 灰分可以穿过大孔区域的隔墙。 当捕获的颗粒物质的量小于限制量时，执行用于增加气体的控制，其暂时增加流入微粒过滤器中的气体的流量以从微粒过滤器除去灰分。
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公开(公告)号：US20200072156A1
公开(公告)日：2020-03-05
申请号：US16508609
申请日：2019-07-11
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Toshihiro MORI
Abstract: The exhaust gas purification system includes a catalyst having an NOx storage and reduction function, an EGR passage, and a controller configured to control combustion of the internal combustion engine. The controller is configured to switch the operation mode from the lean burn operation to the rich burn operation, when a request for execution of the rich burn operation is issued during the lean burn operation. The controller is configured to perform, when the request the execution of the rich burn operation is issued, an NOx-increasing process in which the combustion of the internal combustion engine is controlled so that an in-cylinder NOx amount is equal to or larger than a required in-cylinder NOx amount prior to switching to the rich burn operation.
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Patent Agency Ranking
公开(公告)号：US20160281565A1
公开(公告)日：2016-09-29
申请号：US15030724
申请日：2014-08-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiromasa NISHIOKA , Kazuhiro ITO , Yoshihisa TSUKAMOTO , Hiroshi OTSUKI , Yasumasa NOTAKE , Daichi IMAI , Ryota KOUTAKE
CPC classification number: F01N3/0814 , F01N3/0842 , F01N3/2013 , F01N3/2066 , F01N2410/06 , F01N2900/1631 , Y02T10/26
Abstract: An exhaust purification device for an internal combustion engine is provided with an NOx adsorbent for adsorbing NOx in exhaust gas and an NOx purifying catalyst for purifying NOx in exhaust gas, which are arranged in an engine exhaust passage. An electric heater is provided for raising the temperature of the NOx adsorbent. When a signal requesting startup of an internal combustion engine is issued, the device starts to supply electric power to the electric heater before the internal combustion engine completely warms up, and supplies the electric heater with a quantity of electric power making the temperature of the NOx adsorbent equal to or higher than the moisture desorption temperature but lower than the NOx desorption temperature.
Abstract translation: 内燃机的排气净化装置具备吸附排气中的NOx的NOx吸附剂和配置在发动机排气通路内的排气净化用NOx净化用催化剂。 提供用于提高NOx吸附剂的温度的电加热器。 当发出请求启动内燃机的信号时，在内燃机完全升温之前，该装置开始向电加热器供电，并向电加热器供电一定量的电力，使得NOx的温度 吸附剂等于或高于湿气解吸温度，但低于NOx解吸温度。
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公开(公告)号：US20160273436A1
公开(公告)日：2016-09-22
申请号：US15071668
申请日：2016-03-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Hiromasa NISHIOKA , Kiyoshi FUJIWARA , Yoshio YAMASHITA
CPC classification number: F01N9/002 , F01N3/021 , F01N3/023 , F01N3/027 , F01N11/002 , F01N2550/04 , F01N2560/08 , F01N2900/0408 , F01N2900/0416 , F01N2900/0422 , F01N2900/08 , F01N2900/1406 , F01N2900/1606
Abstract: An exhaust emission control system of an internal combustion engine may include a filter, a temperature raising device, a differential pressure detecting device, and an electronic control unit. The filter may include a first region as a part of the filter, and a second region as another part of the filter. The electronic control unit may be configured to calculate a first deposition amount such that a calculated deposition amount is larger as a proportion of a magnitude of the first differential pressure reduction amount to the length of the first oxidation period is larger. The electronic control unit may be configured to calculate an amount of the particulate matter deposited in the second region based on a length of the second oxidation period and a second differential pressure reduction amount.
Abstract translation: 内燃机的废气排放控制系统可以包括过滤器，升温装置，差压检测装置和电子控制单元。 过滤器可以包括作为过滤器的一部分的第一区域和作为过滤器的另一部分的第二区域。 电子控制单元可以被配置为计算第一沉积量，使得计算的沉积量随着第一压差降低量的大小与第一氧化周期的长度的比例较大而更大。 电子控制单元可以被配置为基于第二氧化时段的长度和第二差压减小量来计算沉积在第二区域中的颗粒物质的量。
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公开(公告)号：US20190195101A1
公开(公告)日：2019-06-27
申请号：US16207891
申请日：2018-12-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Hiroshi KOBAYASHI
Abstract: An exhaust gas purification apparatus for an internal combustion engine includes: a controller comprising at least one processor is configured to carry out rich spike; wherein the controller carries out supply control to supply a reducing agent to a post-stage catalyst, wherein in cases where a temperature of an NSR catalyst becomes less than a predetermined determination temperature in at least a part of a determination period of time, the controller carries out the supply control according to the execution of current rich spike; wherein the controller controls such that in cases where the storage amount of NOx is the same, an amount of supply of the reducing agent in the supply control is made larger as a period of time in which the temperature of the NSR catalyst becomes less than the predetermined determination temperature in the determination period of time becomes longer.
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公开(公告)号：US20170138235A1
公开(公告)日：2017-05-18
申请号：US15311252
申请日：2015-05-20
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshihisa TSUKAMOTO , Kazuhiro ITOH , Hiromasa NISHIOKA , Daichi IMAI , Hiroshi OHTSUKI , Yasumasa NOTAKE
CPC classification number: F01N3/0232 , B01D46/0078 , B01D46/446 , B01D46/46 , B01D2279/30 , F01N3/023 , F01N3/0234 , F01N3/027 , F01N9/002 , F01N9/007 , F01N11/002 , F01N2550/04 , F01N2900/0412 , F01N2900/0601 , F01N2900/1404 , F01N2900/1406 , F01N2900/1602 , F01N2900/1606 , F02D41/024 , F02D41/029 , Y02T10/26 , Y02T10/47
Abstract: An estimated trapped amount (PM) that is an estimated value of an amount of particulate matter that is trapped in a particulate filter arranged in an engine exhaust passage is calculated based on an engine operating state, and PM removal control is performed when the estimated trapped amount exceeds an upper limit amount. Reference temperature increase control is performed to remove the particulate matter from the particulate filter, and an actual temperature that is the temperature of the particulate filter while the reference temperature increase control is being performed is detected. A reference temperature that is the temperature of the particulate filter when it is assumed that the reference temperature increase control has been performed when the amount of particulate matter trapped in the particulate filter is a reference initial trapped amount is stored in advance. The estimated trapped amount is corrected based on the actual temperature and the reference temperature.
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公开(公告)号：US20160298511A1
公开(公告)日：2016-10-13
申请号：US15036540
申请日：2014-09-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Kazuhiro ITOU , Hiromasa NISHIOKA
CPC classification number: F01N3/0222 , F01N3/021 , F01N3/0253 , F01N9/002 , F01N2330/06 , F01N2330/60 , F01N2510/068 , F01N2510/0682 , F01N2560/08 , Y02T10/20 , Y02T10/47
Abstract: The risk of a particulate filter from being damaged is reduced while an increase in pressure loss of the particulate filter due to ash is suppressed. Micropore zones are defined at upstream sides of partition walls of a particulate filter and macropore zones are defined at downstream sides of partition walls. The pore size of the partition walls at the micropore zones is set so that the particulate matter and the ash can be trapped by the partition walls at the micropore zones, while the pore size of the partition walls at the macropore zones is set so that the ash can pass through the partition walls at the macropore zones. When the difference dQPM between the quantity of the particulate matter which is trapped at the micropore zones and the quantity of particulate matter which is trapped at the macropore zones exceeds a predetermined threshold value, PM removal control is executed.
Abstract translation: 颗粒过滤器被损坏的风险降低，同时由于灰分导致的颗粒过滤器的压力损失的增加被抑制。 微孔区限定在颗粒过滤器的隔壁的上游侧，大孔区限定在隔墙的下游侧。 微孔区域的隔壁的孔径被设定为使得微孔区域中的分隔壁可以捕获颗粒物质和灰分，同时将大孔区域的隔壁的孔径设定为使得 灰分可以穿过大孔区域的隔墙。 当在微孔区域捕获的颗粒物质的量与在大孔区域被捕获的颗粒物质的量之间的差dQPM超过预定阈值时，执行PM去除控制。
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