公开(公告)号：US20180112569A1

公开(公告)日：2018-04-26

申请号：US15681821

申请日：2017-08-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinichi TAKESHIMA ,  Hiromasa NISHIOKA ,  Kiyoshi FUJIWARA

IPC: F01N3/10

CPC classification number: F01N3/106 ,  F01N3/021 ,  F01N3/023 ,  F01N3/025 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/105 ,  F01N3/2006 ,  F01N3/2033 ,  F01N3/206 ,  F01N3/2066 ,  F01N3/2073 ,  F01N3/22 ,  F01N3/30 ,  F01N3/306 ,  F01N9/00 ,  F01N11/00 ,  F01N11/002 ,  F01N13/009 ,  F01N2240/02 ,  F01N2240/14 ,  F01N2240/30 ,  F01N2610/03 ,  F01N2610/04 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

Abstract: An exhaust purification system of an internal combustion engine comprising an exhaust treatment catalyst (13) arranged in an engine exhaust passage and a heat and hydrogen generation device (50) able to feed only heat or heat and hydrogen to the exhaust treatment catalyst (13). When the warm-up operation of the heat and hydrogen generation device (50) is completed and a reforming action by a reformer catalyst (54) becomes possible, if the temperature of the exhaust treatment catalyst (13) is a preset activation temperature or more, a partial oxidation reaction is performed at the heat and hydrogen generation device (50) and the generated heat and hydrogen are fed to the exhaust treatment catalyst (50). At this time, if the temperature of the exhaust treatment catalyst (13) is less than the preset activation temperature, a complete oxidation reaction by a lean air-fuel ratio is continued and a heat is fed to the exhaust treatment catalyst (13).

公开(公告)号：US20180073726A1

公开(公告)日：2018-03-15

申请号：US15651252

申请日：2017-07-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinichi TAKESHIMA ,  Hiromasa NISHIOKA ,  Kiyoshi FUJIWARA

IPC: F23C5/08 ,  F23C7/00 ,  F23C7/06 ,  F23C9/00 ,  C01B3/32

CPC classification number: F23C5/08 ,  C01B3/323 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/0811 ,  C01B2203/0827 ,  C01B2203/10 ,  C01B2203/1604 ,  C01B2203/1619 ,  C01B2203/169 ,  F23C7/008 ,  F23C7/06 ,  F23C13/02 ,  F23C2900/03002 ,  F23C2900/03005 ,  F23L15/02 ,  F23N1/022

Abstract: A heat and hydrogen generation device comprising a burner combustion chamber (3), a burner (7) for feeding fuel and air into the burner combustion chamber (3), and a reformer catalyst (4). The target value of the O2/C molar ratio of air and fuel which are made to react in the burner combustion chamber (3) is preset as the target O2/C molar ratio. The actual O2/C molar ratio at the time of warm-up operation is estimated from the rate of temperature rise of the reformer catalyst (4) etc., when performing warm-up operation. When the estimated actual O2/C molar ratio deviates from the target O2/C molar ratio at the time of warm-up operation, the ratio of feed between the amount of feed of air for burner combustion and the amount of feed of fuel for burner combustion is corrected, in a direction making the estimated actual O2/C molar ratio approach the target O2/C molar ratio at the time of warm-up operation.

公开(公告)号：US20180001289A1

公开(公告)日：2018-01-04

申请号：US15635616

申请日：2017-06-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinichi TAKESHIMA ,  Hiromasa NISHIOKA ,  Kiyoshi FUJIWARA

IPC: B01J8/02 ,  C01B3/38

CPC classification number: B01J8/0278 ,  B01J8/0285 ,  B01J2208/00168 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/0838 ,  C01B2203/0883 ,  C01B2203/1247 ,  C01B2203/1614 ,  C01B2203/169

Abstract: A burner combustion chamber (3), a burner (7) for performing a burner combustion in the burner combustion chamber (3) a reformer catalyst (4) to which burner combustion gas is fed, and a heat exchange part (13a) for heating the air fed to the burner (7) are provided. A switching device (16, 17) able to switch an air flow route for introducing the outside air to the burner (7) between a high temperature air flow route (13) for introducing the outside air flowing within the heat exchange part (13a) and heated at the heat exchange part(13a) to the burner (7) and a low temperature air flow route (14) for feeding the outside air, which does not flow within the heat exchange part (13a) and thereby is lower in temperature than the outside air heated at the heat exchange part (13a), to the burner (7) is provided.

公开(公告)号：US20240183323A1

公开(公告)日：2024-06-06

申请号：US18466593

申请日：2023-09-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinichi TAKESHIMA

IPC: F02D41/14

CPC classification number: F02D41/1475 ,  F02D41/1454 ,  F02D41/1459 ,  F02D2200/0802 ,  F02D2200/0814

Abstract: An air-fuel ratio control apparatus includes an air-fuel ratio control unit controlling an air-fuel ratio of exhaust gas flowing into an exhaust gas control catalyst of the internal combustion engine includes an air-fuel ratio control unit controlling the air-fuel ratio of the exhaust gas flowing into the exhaust gas control catalyst. The air-fuel ratio control unit alternately repeats a rich process for controlling the air-fuel ratio that is richer than a stoichiometric air-fuel ratio and a lean process for controlling the air-fuel ratio hat is leaner than the stoichiometric air-fuel ratio. The air-fuel ratio control unit, during the rich process, executes a lean pulse process for controlling, over a period shorter than a period of one execution of the lean process, the air-fuel ratio of the exhaust gas to reach a lean air-fuel ratio having a higher lean level than the air-fuel ratio during the lean process.

公开(公告)号：US20230086873A1

公开(公告)日：2023-03-23

申请号：US17857182

申请日：2022-07-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinichi TAKESHIMA ,  Hiromasa NISHIOKA

IPC: B01D53/94 ,  F01N3/08

Abstract: An exhaust gas control system according to the present disclosure includes: a first exhaust gas control catalyst layer that controls an exhaust gas emitted from an internal combustion engine; and a second exhaust gas control catalyst layer that further controls the exhaust gas that has been controlled by the first exhaust gas control catalyst layer. The second exhaust gas control catalyst layer contains an oxygen storage material. The ratio of the amount (mmol—CO2/m2) of base points per specific surface area (m2/g) of the oxygen storage material to the specific surface area is equal to or less than 4.50×10−5.

公开(公告)号：US20180179974A1

公开(公告)日：2018-06-28

申请号：US15798781

申请日：2017-10-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyoshi FUJIWARA ,  Shinichi TAKESHIMA ,  Hiromasa NISHIOKA

IPC: F02D41/02 ,  F01N3/20

CPC classification number: F02D41/0255 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/2006 ,  F01N3/2033 ,  F01N3/206 ,  F01N3/2066 ,  F01N9/00 ,  F01N11/002 ,  F01N2240/02 ,  F01N2240/30 ,  F01N2610/02 ,  F01N2610/04 ,  F01N2900/1411 ,  F01N2900/1602 ,  F01N2900/18 ,  F02D41/027 ,  Y02T10/26 ,  Y02T10/47

Abstract: An exhaust treatment catalyst (13) arranged in an engine exhaust passage and a heat and hydrogen generation device (50) are provided. The amount of fuel fed to the heat and hydrogen generation device (50), which is required for making the temperature of the exhaust treatment catalyst (13) rise by exactly a predetermined temperature rise by heat and hydrogen fed from the heat and hydrogen generation device (50) when the exhaust treatment catalyst (13) is not poisoned and does not thermally deteriorate, is calculated based on the amount of exhaust gas. When fuel of the reference feed fuel amount corresponding to the amount of exhaust gas is fed to the heat and hydrogen generation device (50) and the temperature rise of the exhaust treatment catalyst (13) fails to reach the predetermined temperature rise, the treatment for restoration from poisoning of the exhaust treatment catalyst (13) is performed.

公开(公告)号：US20180128147A1

公开(公告)日：2018-05-10

申请号：US15701607

申请日：2017-09-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyoshi FUJIWARA ,  Yuji MIYOSHI ,  Shinichi TAKESHIMA ,  Hiromasa NISHIOKA

IPC: F01N3/20

CPC classification number: F01N3/2066 ,  B01D53/90 ,  B01D53/9431 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/202 ,  B01D2259/122 ,  F01N3/021 ,  F01N3/035 ,  F01N13/009 ,  F01N2240/02 ,  F01N2240/30 ,  F01N2610/04 ,  F01N2610/06 ,  Y02T10/24

Abstract: An exhaust purification system of an internal combustion engine comprising at least two exhaust treatment catalysts arranged in an engine exhaust passage, a hydrogen feed source, and a plurality of hydrogen feed passages for feeding hydrogen from the hydrogen feed source to the exhaust treatment catalysts. When warming up the exhaust treatment catalysts, hydrogen is fed from the hydrogen feed source through the corresponding hydrogen feed passage to the exhaust treatment catalyst with the larger rise of the exhaust removal rate when hydrogen is fed among the exhaust treatment catalysts.

公开(公告)号：US20180002175A1

公开(公告)日：2018-01-04

申请号：US15635756

申请日：2017-06-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinichi TAKESHIMA ,  Hiromasa NISHIOKA ,  Kiyoshi FUJIWARA

IPC: C01B3/38

CPC classification number: C01B3/38 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/0811 ,  C01B2203/0883 ,  C01B2203/1614 ,  C01B2203/1619 ,  C01B2203/169

Abstract: A burner combustion chamber (3), a reformer catalyst (4) to which burner combustion gas is fed, and a heat exchange part (13a) for heating the air fed to the burner (7) are provided. When the temperature of the reformer catalyst (4) exceeds the allowable catalyst temperature (TX) or when it is predicted the temperature of the reformer catalyst (4) will exceed the allowable catalyst temperature (TX), the air circulation route for guiding air to the burner (7) is switched from a high temperature air circulation route (13) for guiding air heated by the heat exchange part (13a) to the burner (7) to a low temperature air circulation route (14) for guiding air not flowing within the heat exchange part (13a) and lower in temperature than the air heated at the heat exchange part (13a) to the burner (7).