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公开(公告)号：US10125647B2
公开(公告)日：2018-11-13
申请号：US15039462
申请日：2014-11-27
摘要： An exhaust gas purification apparatus for an internal combustion engine comprises: a selective catalytic reduction (SCR) catalyst selectively reducing NOx in an exhaust gas of the internal combustion engine using ammonia as a reducing agent; a supply device adding an additive agent, such as ammonia, to the exhaust gas at an upstream side of the SCR catalyst; and a controller, when a temperature of SCR catalyst is higher than a predetermined temperature, increases a NOx concentration of the exhaust gas flowing into the SCR catalyst and increases an amount of addition of the additive agent in such a manner that a ratio of an amount of ammonia with respect to an amount of NOx contained in the exhaust gas flowing into the SCR catalyst, becomes large, as compared to when the temperature is equal to or less than the predetermined temperature.
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公开(公告)号：US10648391B2
公开(公告)日：2020-05-12
申请号：US16221684
申请日：2018-12-17
发明人： Ryohei Ono , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
摘要： A controller estimates a first estimated adsorption amount which is an amount of adsorption of ammonia in the SCR catalyst at the time when the SCR catalyst is assumed to be in a predetermined abnormal state, estimates a second estimated adsorption amount at the time when the SCR catalyst is assumed to be in a predetermined normal state, calculates a first slip development temperature based on the first estimated adsorption amount, and calculates a second slip development temperature based on the second estimated adsorption amount. The controller, when carrying out an abnormality diagnosis based on a concentration of ammonia in an exhaust gas at the downstream side of the SCR catalyst, carries out diagnostic temperature control so as to control the temperature of the SCR catalyst to a temperature which is equal to or more than the first slip development temperature and is less than the second slip development temperature.
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公开(公告)号：US10337376B2
公开(公告)日：2019-07-02
申请号：US15527891
申请日：2015-12-15
IPC分类号： F01N3/20 , F01N3/025 , F01N3/035 , F01N3/08 , F01N9/00 , F02D41/02 , F02D41/40 , F01N3/10 , F01N13/00 , B01D46/00 , B01D53/94
摘要： An exhaust gas purification system comprises a first fuel supply unit to supply fuel to exhaust gas flowing in an exhaust passage by a supply valve arranged in the exhaust passage, and a second fuel supply unit to supply fuel to exhaust gas by adjusting a fuel injection condition, wherein in a temperature raising stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, first control is performed in which fuel is supplied by the first fuel supply unit, and in a temperature holding stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, at least second control is performed in which the ratio of an amount of fuel supply by the second fuel supply unit with respect to an amount of fuel supply by the first fuel supply unit becomes higher in comparison with that when performing the first control.
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公开(公告)号：US20190195114A1
公开(公告)日：2019-06-27
申请号：US16221684
申请日：2018-12-17
发明人： Ryohei ONO , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
IPC分类号： F01N11/00
CPC分类号： F01N11/007 , F01N11/002 , F01N2550/02 , F01N2550/03
摘要： A controller estimates a first estimated adsorption amount which is an amount of adsorption of ammonia in the SCR catalyst at the time when the SCR catalyst is assumed to be in a predetermined abnormal state, estimates a second estimated adsorption amount at the time when the SCR catalyst is assumed to be in a predetermined normal state, calculates a first slip development temperature based on the first estimated adsorption amount, and calculates a second slip development temperature based on the second estimated adsorption amount. The controller, when carrying out an abnormality diagnosis based on a concentration of ammonia in an exhaust gas at the downstream side of the SCR catalyst, carries out diagnostic temperature control so as to control the temperature of the SCR catalyst to a temperature which is equal to or more than the first slip development temperature and is less than the second slip development temperature.
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公开(公告)号：US09512769B2
公开(公告)日：2016-12-06
申请号：US14736687
申请日：2015-06-11
CPC分类号： F01N11/00 , F01N3/2066 , F01N3/208 , F01N3/2896 , F01N13/0093 , F01N13/011 , F01N2610/02 , F01N2610/144 , F01N2610/146 , F01N2610/1486 , F01N2610/1493 , F01N2900/1808 , F01N2900/1822 , Y02T10/24
摘要： A pump share-type urea water supply system includes a first supply valve and a second supply valve. A urea water tank is connected with the respective supply valves by a urea water supply path that includes a first supply path for the first supply valve and a second supply path for the second supply valve. The second supply path has a larger capacity than the first supply path by a predetermined volume. A suck-back control controls opening and closing of the respective supply valves such that a first estimated valve-opening time of the first supply valve for suck-back control in the first supply valve and supply path is shorter than a second estimated valve-opening time of the second supply valve for suck-back control in the second supply valve and in-the-second supply path by at least a first control time corresponding to the predetermined volume.
摘要翻译： 泵共用型尿素水供给系统包括第一供给阀和第二供给阀。 尿素水箱通过包括第一供给阀的第一供给路径和第二供给阀的第二供给路径的尿素水供给路径与各供给阀连接。 第二供应路径具有比第一供应路径大一预定体积的容量。 回吸控制控制各个供给阀的打开和关闭，使得第一供给阀和供给通道中的用于吸回控制的第一供给阀的第一估计开阀时间比第二估计开阀时间短 第二供给阀用于在第二供给阀和第二供给路径中进行至少第一控制时间的第二供给阀的时间。
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公开(公告)号：US20150290587A1
公开(公告)日：2015-10-15
申请号：US14443179
申请日：2012-11-16
申请人： Akira MIKAMI , Shigeki NAKAYAMA , Nobumoto OHASHI , Keishi TAKADA , Kenji SAKURAI , Yoshihisa TUKAMOTO , Hiroshi OTSUKI , Junichi MATSUO , Ichiro YAMAMOTO , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Akira Mikami , Shigeki Nakayama , Nobumoto Ohashi , Keishi Takada , Kenji Sakurai , Yoshihisa Tsukamoto , Hiroshi Otsuki , Junichi Matsuo , Ichiro Yamamoto
CPC分类号： B01D53/9477 , B01D53/0415 , B01D53/9418 , B01D53/944 , B01D53/9463 , B01D53/9468 , B01D2251/2062 , B01D2255/1021 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/904 , B01D2255/911 , B01D2257/406 , B01D2257/502 , B01D2257/702 , B01D2258/012 , F01N3/021 , F01N3/035 , F01N3/0814 , F01N3/0828 , F01N3/103 , F01N3/106 , F01N3/108 , F01N3/2066 , F01N13/009 , F01N13/0097 , F01N2510/063 , F01N2510/0684 , F01N2560/06 , F01N2560/14 , F01N2570/18 , F01N2610/02 , Y02T10/24
摘要： An object of the present invention is to appropriately remove, from an exhaust gas, HC, CO, and ammonia flowing out from a filter (SCRF) on which an SCR catalyst is carried. In the present invention, a post-catalyst 8 is provided for an exhaust gas passage of an internal combustion engine on a downstream side from SCRF along with a flow of the exhaust gas. The post-catalyst 8 is constructed to include an adsorption reduction part 81c which adsorbs ammonia and which reduces NOx by using ammonia as a reducing agent, a first oxidation part 81b which oxidizes ammonia, and a second oxidation part 82 which oxidizes HO and CO.
摘要翻译： 本发明的目的是从排出气体中适当地除去从其上载有SCR催化剂的过滤器（SCRF）流出的HC，CO和氨。 在本发明中，为了将内燃机的排气通路与SCRF的下游侧连同废气流一起设置有后催化剂8。 后催化剂8被构造为包括吸附氨并通过使用氨作为还原剂而还原NOx的吸附还原部分81c，氧化氨的第一氧化部分81b和氧化HO和CO的第二氧化部分82。
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公开(公告)号：US11312245B2
公开(公告)日：2022-04-26
申请号：US17188208
申请日：2021-03-01
发明人： Akira Mikami , Shota Fuchigami
摘要： A vehicle power supply system includes a power storage device, a plurality of devices including a plurality of noise generators, and a power distribution circuit connecting the power storage device and the devices. Each of the noise generators is connected to the power distribution circuit via a noise filter. The noise filter includes a first impedance element and a Y capacitor provided closer to the noise generators than the first impedance element. The first impedance element provided for each of the noise generators is an impedance element having a shape and a material that increase a first system impedance of each of the devices to be higher than a predetermined lower limit impedance at least in an amplitude modulation band.
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公开(公告)号：US20190186316A1
公开(公告)日：2019-06-20
申请号：US16210008
申请日：2018-12-05
发明人： Ryohei ONO , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
摘要： An exhaust gas purification apparatus for an internal combustion engine includes the adsorbent, the catalyst and the heat generating element, wherein in cases where the residual capacity of the battery is smaller than a first predetermined value required for raising the temperature of the catalyst to an activation temperature thereof, and in cases where the residual capacity of the battery is larger than a second predetermined value which is smaller than the first predetermined value and which is required for raising the temperature of the adsorbent to a predetermined temperature at which the adsorbent exhibits adsorption performance required at the time of starting of the internal combustion engine, an amount of electric power to be supplied to the heat generating element from the battery is adjusted such that the temperature of the adsorbent becomes the predetermined temperature.
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公开(公告)号：US10753249B2
公开(公告)日：2020-08-25
申请号：US16258721
申请日：2019-01-28
发明人： Ryohei Ono , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
摘要： An exhaust emission control device for an internal combustion engine according to the present disclosure includes an exhaust emission control catalyst provided in an exhaust passage in an internal combustion engine and divided into a preceding catalyst and a succeeding catalyst, and a heating device provided in the exhaust passage between the preceding catalyst and the succeeding catalyst. The exhaust emission control catalyst is divided into the preceding catalyst and the succeeding catalyst so that a ratio of a capacity of the preceding catalyst to a total displacement of the internal combustion engine is from 0.3 to 1.5.
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公开(公告)号：US10677125B2
公开(公告)日：2020-06-09
申请号：US16210008
申请日：2018-12-05
发明人： Ryohei Ono , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
摘要： An exhaust gas purification apparatus for an internal combustion engine includes the adsorbent, the catalyst and the heat generating element, wherein in cases where the residual capacity of the battery is smaller than a first predetermined value required for raising the temperature of the catalyst to an activation temperature thereof, and in cases where the residual capacity of the battery is larger than a second predetermined value which is smaller than the first predetermined value and which is required for raising the temperature of the adsorbent to a predetermined temperature at which the adsorbent exhibits adsorption performance required at the time of starting of the internal combustion engine, an amount of electric power to be supplied to the heat generating element from the battery is adjusted such that the temperature of the adsorbent becomes the predetermined temperature.
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