-
公开(公告)号：US20190301330A1
公开(公告)日：2019-10-03
申请号：US16360434
申请日：2019-03-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masataka OGUSHI , Keiichiro AOKI , Toshihiro MORI , Hiroshi KOBAYASHI
Abstract: An exhaust gas control apparatus for an internal combustion engine includes a NOx storage reduction catalyst, a selective catalytic reduction catalyst, and an electronic control unit configured to shift an operation state of the engine from a rich operation state to a lean operation state, in a case where an acquired temperature of the NOx storage reduction catalyst is higher than a storage limit temperature, and an acquired NH3 adsorption amount is equal to or larger than a lower limit adsorption amount when a lean operation restart request is made, and not to shift the operation state from the rich operation state to the lean operation state in a case where the acquired temperature of the NOx storage reduction catalyst is higher than the storage limit temperature and the acquired NH3 adsorption amount is smaller than the lower limit adsorption amount when the lean operation restart request is made.
-
2.发明申请公开(公告)号：US20180128143A1
公开(公告)日：2018-05-10
申请号：US15807808
申请日：2017-11-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , THE DOSHISHA
Inventor： Kazuhiro UMEMOTO , Toshihiro MORI , Hiromasa NISHIOKA , Jiro SENDA , Eriko MATSUMURA
IPC: F01N3/20
Abstract: An exhaust gas control apparatus for an internal combustion engine is provided. The exhaust gas control apparatus is equipped with a NOx reduction catalyst, a reducing agent tank, a reducing agent supply device, a booster, a heater, and an electronic control unit. The electronic control unit is configured to perform control of raising a temperature of a reducing agent to a first target temperature such that the reducing agent supplied by the reducing agent supply device is brought into a gas-liquid mixed state in an exhaust passage, when energy of exhaust gas is lower than a first threshold.
-
公开(公告)号：US20190195103A1
公开(公告)日：2019-06-27
申请号：US16210012
申请日：2018-12-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi KOBAYASHI , Toshihiro MORI , Daichi IMAI , Keiichiro AOKI
Abstract: Rich spike is carried out in an efficient manner. In an exhaust gas purification apparatus for an internal combustion engine which performs lean burn operation, the apparatus includes an NOx storage reduction catalyst, a controller to carry out rich spike, to calculate a storage amount of NOx, to calculate a storage amount of nitrates, and calculate a nitrate ratio, wherein the controller controls a timing at which the rich spike is carried out, based on the nitrate ratio.
-
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.
-
公开(公告)号：US20190234268A1
公开(公告)日：2019-08-01
申请号：US16254956
申请日：2019-01-23
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toshihiro MORI , Hiroshi KOBAYASHI , Masataka OGUSHI
IPC: F01N3/20 , F01N9/00 , F02B37/02 , F02D41/02 , F02D41/38 , F01N3/025 , B01D46/00 , B01D53/94 , F01N3/035
Abstract: An exhaust purification system of an internal combustion engine 1 comprises a catalyst 28 arranged in an exhaust passage 27 of the internal combustion engine, a fuel supply device supplying fuel to the catalyst through the exhaust passage, and a control device 80 configured to control the supply of fuel by the fuel supply device. The control device is configured to calculate a concentration in exhaust gas of fuel supplied to the exhaust passage by the fuel supply device and a saturation vapor pressure concentration of the fuel and supply fuel from the fuel supply device to the catalyst only if the concentration in the exhaust gas is higher than the saturation vapor pressure concentration.
-
Patent Agency Ranking
公开(公告)号：US20170211442A1
公开(公告)日：2017-07-27
申请号：US15405597
申请日：2017-01-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuhiro UMEMOTO , Toshihiro MORI
CPC classification number: F01N3/0232 , B01D46/0027 , B01D46/006 , B01D46/46 , B01D2279/30 , B01J23/56 , B01J23/58 , B01J35/0006 , B01J35/04 , F01N3/023 , F01N3/025 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/106 , F01N9/002 , F01N2900/1602 , F01N2900/1606 , F01N2900/1611 , F02D41/024 , F02D41/025 , F02D41/029 , F02D2200/0812 , Y02T10/26 , Y02T10/47
Abstract: An exhaust emission control apparatus for an engine includes an ECU. The ECU is configured to: execute particulate matter removal control by controlling the engine such that a temperature of a particulate filter is increased to a predetermined PM removal temperature in order to reduce an amount of particulate matter collected in the particulate filter; and when the ECU determines that the amount of particulate matter collected in the particulate filter is smaller than or equal to a predetermined set collection amount, execute ash desorption control by controlling the engine such that the temperature of the particulate filter is increased to a predetermined ash desorption temperature and is kept at the ash desorption temperature or higher in order to reduce an amount of ash deposited in the particulate filter. The ash desorption temperature is a temperature suitable for converting the ash into calcium oxide.
-
公开(公告)号：US20160326930A1
公开(公告)日：2016-11-10
申请号：US15066164
申请日：2016-03-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuhiro UMEMOTO , Toshihiro MORI , Hiroshi KOBAYASHI , Shigeki NAKAYAMA
CPC classification number: F01N3/2073 , F01N3/0814 , F01N3/0842 , F01N3/10 , F01N3/106 , F01N3/108 , F01N3/2066 , F01N9/00 , F01N13/008 , F01N13/009 , F01N13/0097 , F01N13/16 , F01N2430/06 , F01N2560/06 , F01N2570/14 , F01N2570/145 , F01N2570/18 , F01N2610/03 , F01N2900/1602 , F01N2900/1621 , Y02T10/24 , Y02T10/47
Abstract: In an engine exhaust passage, in order from an exhaust upstream side, an NOx storage and reduction catalyst, NO oxidation catalyst, NO2 reduction catalyst, and selective reduction catalyst may be arranged. An air-fuel ratio of an exhaust gas which flows into the NOx storage and reduction catalyst may be temporarily switched to a rich air-fuel ratio which may be adapted for generating ammonia from NOx which may be stored in the NOx storage and reduction catalyst. The ammonia, which may be generated by the NOx storage and reduction catalyst, may be held at the selective reduction catalyst. The NOx which flows into the selective reduction catalyst may be reduced by the ammonia. The NO oxidation catalyst and NO2 reduction catalyst may be used to make an NO ratio of the exhaust gas which flows into the selective reduction catalyst approach an optimum ratio of the selective reduction catalyst.
Abstract translation: 在发动机排气通路中，从排气上游侧起，可以配置NOx还原催化剂，NO氧化催化剂，NO 2还原催化剂和选择还原催化剂。 流入NOx储存还原催化剂的废气的空燃比可以暂时切换为浓缩空燃比，其可以适于从可能存储在NOx储存还原催化剂中的NOx产生氨。 可以由NOx储存和还原催化剂产生的氨可以保留在选择还原催化剂上。 可以通过氨还原流入选择还原催化剂的NOx。 可以使用NO氧化催化剂和NO 2还原催化剂使流入选择还原催化剂的废气的NO比达到选择还原催化剂的最佳比例。
-
公开(公告)号：US20180238218A1
公开(公告)日：2018-08-23
申请号：US15869428
申请日：2018-01-12
Applicant: SOKEN INC. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tetsuro SERAI , Kenichi TOMOMATSU , Takayoshi KOJIMA , Naoki TODA , Kazuhiro UMEMOTO , Toshihiro MORI , Hiromasa NISHIOKA
IPC: F01N3/20
CPC classification number: F01N3/2033 , F01N3/36 , F01N9/00 , F01N2610/03 , F01N2610/1433 , F01N2610/144 , F01N2900/1404 , Y02T10/26 , Y02T10/47
Abstract: The fuel addition system comprises: a fuel addition valve, a fuel tank, a first pressure storage chamber storing fuel to be supplied to a fuel injector, a supply pump increasing a pressure of fuel inside the fuel tank and supplying the fuel to the first pressure storage chamber, a pressure reduction valve discharging fuel stored in the first pressure storage chamber, a pressure reduction fuel passage supplying fuel discharged from the first pressure storage chamber to the fuel addition valve, and a control device controlling the fuel addition valve and the pressure reduction valve. The control device detects or estimates a temperature of fuel supplied to the fuel addition valve and, when injecting fuel from the fuel addition valve, controls an amount of fuel discharged from the first pressure storage chamber through the pressure reduction valve so that the temperature of the fuel becomes a reference temperature or more.
-
公开(公告)号：US20180179937A1
公开(公告)日：2018-06-28
申请号：US15809203
申请日：2017-11-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryohei YAMAMOTO , Toshihiro MORI
CPC classification number: F01N3/2033 , F01N3/021 , F01N3/0253 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/103 , F01N3/36 , F01N9/002 , F01N11/002 , F01N13/009 , F01N2250/02 , F01N2260/04 , F01N2550/02 , F01N2560/06 , F01N2610/03 , Y02T10/47
Abstract: An exhaust purification system of an internal combustion engine 1 comprises: a filter 29 arranged in an exhaust passage of the internal combustion engine and trapping particulate matter contained in exhaust gas, a catalyst 28 arranged in the exhaust passage at an upstream side from the filter in a direction of exhaust flow or supported on the filter, a fuel feed device 3, 35 feeding fuel to the catalyst, and a control device 80 configured to control the feed of fuel by the fuel feed device. The control device is configured to feed fuel from the fuel feed device to the catalyst so as to burn off particulate matter trapped at the filter as processing for filter regeneration, and feed liquid state fuel from the fuel feed device to the catalyst after the processing for filter regeneration.
-
公开(公告)号：US20180179934A1
公开(公告)日：2018-06-28
申请号：US15841634
申请日：2017-12-14
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryohei YAMAMOTO , Toshihiro MORI
CPC classification number: F01N3/0253 , F01N3/2033 , F01N9/002 , F01N2260/04 , F01N2610/03 , F01N2900/1404 , F01N2900/1606 , Y02T10/26 , Y02T10/47
Abstract: The exhaust purification system of an internal combustion engine 1 comprises: a catalyst 28 arranged in an exhaust passage 27 of the internal combustion engine, a fuel feed device 3, 35 feeding fuel to the catalyst, and a control device 80 configured to control the feed of fuel by the fuel feed device. The control device is configured to feed liquid state fuel from the fuel feed device to the catalyst when judging that a ratio of high viscosity components in particulate matter deposited on the catalyst is a predetermined value or less.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.016 seconds)
