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21. 发明专利

JPH09303142A EXHAUST PURIFIER FOR DIESEL ENGINE 失效
公开(公告)号：JPH09303142A
公开(公告)日：1997-11-25
申请号：JP12350696
申请日：1996-05-17
申请人： TOYOTA MOTOR CORP
发明人： IWATA YOICHI , ARAKI YASUSHI , MIZUNO TATSUJI
IPC分类号： F01N3/36
摘要： PROBLEM TO BE SOLVED: To effectively attain the reduction of NO2 in exhaust gas, by supplying a reducing agent from the upstream of an oxidation catalyst when deciding a flow amount of the outside air fetched to a Diesel engine in a prescribed value or less and a temperature of the oxidation catalyst or exhaust gas in a prescribed value or more. SOLUTION: During operation of an engine, a CPU72 reads a catalytic temperature and an intake flow amount from a catalytic temperature sensor 66 and an air flow meter 61, the catalytic temperature is decided for whether it is within a prescribed temperature or not. Here, in the case of deciding YES, next, the intake flow amount is decided for whether it is smaller than a prescribed preset value or not, in the case of this decision YES, successively, a fuel injection pump 16 is drive controlled, a prescribed amount of light oil is injected into an intake passage 6 from a fuel injection valve 15. Injected light oil works as a reducing agent in an oxidation catalyst 14, produced NO2 is reduced to NO with oxygen taken by light oil. On the other hand, the light oil is further oxidized by the oxidation catalyst 14, to be decomposed to H2 , CO2 , etc.

22. 发明专利

JPH08103635A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH08103635A
公开(公告)日：1996-04-23
申请号：JP24276394
申请日：1994-10-06
申请人： TOYOTA MOTOR CORP
发明人： MIZUNO TATSUJI , UENO HIDEAKI
IPC分类号： B01D53/86 , B01D53/94 , B01J29/12 , B01J29/46 , B01J29/76 , B01J29/80
摘要： PURPOSE: To expand the temp. range for attaining high removing rate of NOx and to more efficiently remove NOx. CONSTITUTION: The catalyst for purifying exhaust gas is made by depositing a catalyst metal on a porous carrier, copper is deposited in the upstream side of the exhaust gas flow as a catalyst A metal and platinum is deposited in the downstream side as a catalyst B metal. It is through that both actions of copper and platinum are exhibited at the maximum by depositing copper having excellent NOx removing performance at a high temp. range in the upstream side and platinum having excellent NOx removing performance at a low temp. range in the downstream side and the catalyst shows high NOx removing performance from low temp. to high temp.

23. 发明专利

JP2007130637A Exhaust gas cleaning filter 有权
标题翻译：排气净化过滤器
公开(公告)号：JP2007130637A
公开(公告)日：2007-05-31
申请号：JP2007010566
申请日：2007-01-19
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： ARAKI YASUSHI , MIZUNO TATSUJI
IPC分类号： B01J23/58 , B01D39/14 , B01D53/94 , B01J35/04 , F01N3/02 , F01N3/24
摘要： PROBLEM TO BE SOLVED: To provide a wall-flow exhaust gas cleaning filter that can combust and remove particulates in the pore interiors of the partition walls. SOLUTION: There is provided a wall-flow exhaust gas cleaning filter having many cells formed in an exhaust flow direction, in which the cells are alternately plugged and opened at the exhaust gas inlet, with the plugged cells being opened at the exhaust gas outlet and the opened cells being plugged at the exhaust gas outlet. The entire surface in a pore formed in the interior of a partition wall between the cells is covered with a coat layer for catalyst support. On the coat layer are carried a catalyst and a NO x absorber that emits NO x components absorbed as a form of NO 2 at a predetermined temperature or higher. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够燃烧和除去分隔壁的孔内部的微粒的壁流废气净化过滤器。解决方案：提供了一种壁排气净化过滤器，其具有沿排气流动方向形成的许多单元，其中单元在废气入口处交替地插入和打开，封闭单元在排气口处打开气体出口，开放的电池被插在废气出口处。形成在细胞之间的分隔壁内部的孔中的整个表面被用于催化剂载体的涂层覆盖。在涂层上载有催化剂和NOS SB x x SB吸收剂，其以预定温度作为NOS SB 2的形式吸收NO x SB x 2 O 3 或更高。版权所有（C）2007，JPO＆INPIT

24. 发明专利

JP2002047957A INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002047957A
公开(公告)日：2002-02-15
申请号：JP2000314029
申请日：2000-10-13
申请人： TOYOTA MOTOR CORP
发明人： KATO KENJI , ITO TAKAAKI , TSUJI SHINJI , MIZUNO TATSUJI , TAKEUCHI MASAHIKO , OGURA YOSHITSUGU , KAWAMURA TETSUO
IPC分类号： F02M25/00 , F01N3/08 , F01N3/18 , F01N3/28 , F02D19/12 , F02D41/04
摘要： PROBLEM TO BE SOLVED: To provide an internal combustion engine capable of suppressing SOx poisoning phenomenon of exhaust gas purifying catalyst of NOx storage reduction type and improving a purification rate of exhaust gas further. SOLUTION: This internal combustion engine 1 burning air-fuel mixture in which air and fuel are mixed in a cylinder 3 to obtain an output is provided with the exhaust gas purifying catalyst 39 of NOx storage reduction type for purifying exhaust gas exhausted from the cylinder 3 after the combustion of the air-fuel mixture and sulfur component solidifying means 16, 41, 42 for solidifying sulfur component which becomes the cause for generating sulfur oxide after the combustion in the internal combustion engine. The sulfur component solidifying means 16, 41, 42 solidify 70% or more of sulfur component that exhaust gas contains before exhaust gas flows into the exhaust gas purifying catalyst 39.

25. 发明专利

JPH11132074A INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION SYSTEM 失效
公开(公告)号：JPH11132074A
公开(公告)日：1999-05-18
申请号：JP29876697
申请日：1997-10-30
申请人： TOYOTA MOTOR CORP
发明人： MIZUNO TATSUJI , GOTO MASAHITO , KIBE KAZUYA
IPC分类号： F02D45/00 , F01N3/08 , F01N3/24 , F01N3/28 , F02D41/02 , F02D41/04 , F02D41/22 , F02D41/38
摘要： PROBLEM TO BE SOLVED: To prevent an clarification reducing agent injected into a cylinder from adhering on the inner wall of the cylinder, by stopping injection of the reducing agent from a reducing agent injecting means, when temperature in the cylinder detected by an in-cylinder temperature detecting means is lower than a set temperature. SOLUTION: Fuel is previously injected from each of fuel injection valves 2a-2d at a given crank angle (pre-injection angle) just before a compression top dead center of each cylinder. Next, main injection is performed at a given crank angle (main-injection angle) near the compression top dead center after pre-injected fuel is ignited. In a third cylinder #3, sub injection is performed after the main injection, fuel supplied into the third cylinder #3 is supplied to a NOx catalyst 12 as a reducing agent. A water temperature sensor 21 for detecting in-cylinder temperature is provided. When temperature in the cylinder is lower than a set temperature and the water temperature sensor 21 is judged to be abnormal, and after starting of an engine, injection of a reducing agent is stopped before passing of set time.

26. 发明专利

JPH11107837A REDUCING AGENT SUPPLY CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11107837A
公开(公告)日：1999-04-20
申请号：JP26709697
申请日：1997-09-30
申请人： TOYOTA MOTOR CORP
发明人： GOTO MASAHITO , MIZUNO TATSUJI , KIBE KAZUYA
IPC分类号： F01N3/20 , F02D41/04 , F02D41/34
摘要： PROBLEM TO BE SOLVED: To supply reducing agents to a catalyst without overheating the same even if an abnormality exists in a downstream temperature sensor when temperature sensors are provided respectively in the upstream and downstream of the catalyst and the supply of reducing agents to the catalyst is controlled based on the output of each temperature sensor in an internal combustion engine having a lean NOX catalyst in an exhaust system and capable of performing lean combustion. SOLUTION: If an abnormality in the downstream temperature sensor is detected (FTHCO=1), the estimated value THCE of a catalyst flow-out exhaust gas temperature is calculated by annealing a catalyst flow-in exhaust gas temperature THCI detected by an upstream temperature sensor, a value obtained by adding a specified margin ΔT to the estimated value THCE is substituted for a catalyst flow-out exhaust gas temperature THCO.

27. 发明专利

JPH10317950A FUEL INJECTION CONTROL DEVICE OF DIRECT INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10317950A
公开(公告)日：1998-12-02
申请号：JP26708397
申请日：1997-09-30
申请人： TOYOTA MOTOR CORP
发明人： KIBE KAZUYA , MIZUNO TATSUJI , HIROTA SHINYA , TANAKA TOSHIAKI , IWATA YOICHI
IPC分类号： F02B37/02 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/24 , F01N3/28 , F01N3/36 , F02D41/02 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To always supply a proper quantity of reductant by interposing upper stream side catalyst purifying exhaust gas by reductant on an exhaust passage on the upper stream side of a confluent part where the exhaust passage of two cylinder groups meet, and computing the quantity of reductant to be supplied to this catalyst based on engine speed and intake air pressure. SOLUTION: During operation of an internal combustion engine 1, a CPU 42 computes the exhaust gas volume passing through NOx catalyst 10a on the upper stream side based on supercharging pressure detected by a pressure sensor 72 and engine speed obtained from the output of a crank angle sensor. The higher the supercharging pressure is, the larger the gas volume is, and the higher the engine speed, the larger the volume. Next, an HC quantity to be supplied to the NOx catalyst 10a on the upper stream side is computed based on the exhaust gas volume. Further, based on the difference of the detected temperature of the respective NOx catalyst 10a, 10b on the upper stream and the downstream, the HC quantity for NOx cleaning to be injected by sub-injection is corrected. Namely when the upper stream side temperature is higher than the downstream side temperature in the NOx catalyst, the HC quantity for NOx cleaning is corrected so as to be restrained.

28. 发明专利

JPH10280943A CATALYST REGENERATOR FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10280943A
公开(公告)日：1998-10-20
申请号：JP8815097
申请日：1997-04-07
申请人： TOYOTA MOTOR CORP
发明人： HIROTA SHINYA , MIZUNO TATSUJI , KIBE KAZUYA , TANAKA TOSHIAKI
IPC分类号： F02D43/00 , F01N3/20 , F01N3/24 , F01N3/36 , F02D41/04 , F02D41/34 , F02D41/40 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To regenerate a catalyst in a simple structure. SOLUTION: An engine has a fuel injection valve 9 which directly injects fuel into a cylinder, and an exhaust emission purifying catalyst 16 is placed in an engine exhaust path. Auxiliary fuel injection is performed form a fuel injection valve 9 to ATDC 150 deg. to supply hydrocarbon to the exhaust emission purifying catalyst 16, which reduces NOx entered exhaust gas. By judging whether the exhaust emission purifying catalyst 16 suffers from position using the hydrocarbon, when its suffering from position is determined, by hastening the auxiliary fuel injection time up to ATDC 90 deg., and by increasing temperature of exhaust gas entering the exhaust emission purifying catalyst 16, the exhaust emission purifying catalyst 16 is regenerated.

29. 发明专利

JPH10238336A EXHAUST GAS CLEANING DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10238336A
公开(公告)日：1998-09-08
申请号：JP4248897
申请日：1997-02-26
申请人： TOYOTA MOTOR CORP
发明人： HIROTA SHINYA , TANAKA TOSHIAKI , MIZUNO TATSUJI
IPC分类号： B01D53/86 , B01D53/94 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/24 , F02B1/04 , F02B23/10 , F02B37/18 , F02B75/12 , F02D9/04 , F02D21/08 , F02D41/02 , F02D41/34 , F02D41/40 , F02D43/00 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To clean exhaust gas to an excellent state by controlling a pressure in an exhaust gas cleaning catalyst. SOLUTION: An exhaust manifold 18 is connected to an exhaust gas cleaning catalyst 19, and an exhaust throttle valve 23 is arranged in an exhaust pipe 21 arranged downstream from the exhaust gas cleaning catalyst 19. The exhaust gas cleaning catalyst 19 adsorbs hydrocarbon in exhaust gas effecting inflow when a pressure in the exhaust gas cleaning catalyst 19 and discharges adsorbed hydrocarbon when a pressure in the exhaust gas cleaning catalyst 19 is reduced. When hydrocarbon is to be adsorbed in the exhaust gas cleaning catalyst 19, the opening of the exhaust throttle valve 23 is reduced to increase a pressure in the exhaust gas cleaning catalyst 19 and simultaneously, a fuel injection valve 9 effects injection of fuel at an engine expansion stroke or an exhaust stroke. When adsorbed hydrocarbon is to be discharged from the exhaust gas cleaning catalyst 19, the exhaust throttle valve 23 is fully opened.

30. 发明专利

JPH10121950A EXHAUST EMISSION CONTROL DEVICE FOR CYLINDER DIRECT INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10121950A
公开(公告)日：1998-05-12
申请号：JP27035796
申请日：1996-10-11
申请人： TOYOTA MOTOR CORP
发明人： KIBE KAZUYA , HIROTA SHINYA , MIZUNO TATSUJI
IPC分类号： F02M45/08 , F01N3/08 , F01N3/24 , F01N3/28 , F02D41/38 , F02D41/40 , F02M61/14 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To prevent fuel from mixing with lubricating oil by injection fuel even at an expansion stroke or an exhaust stroke while injecting fuel from fuel injection means at an intake stroke or a compression stroke, and controlling an injection range of a second injection fuel for prevent fuel from arriving to a wall surface in a cylinder. SOLUTION: In the case where an injector 1 is driving-controlled, a timing signal for showing a start timing of fuel injection (main injection) is outputted from an injection timing means 29. A start timing of the main injection is set to, for example, near a top dead center of compression. A timing signal for showing a start timing of fuel injection (auxiliary injection) is outputted from an injection timing means 30. The start timing of auxiliary injection is set at a final period of an expansion stroke or an initial period of an exhaust stroke. A total auxiliary injection rate is decided by an injection control means 32, and then, injection pressure is controlled by an injection range control means 31 when the total auxiliary injection rate is injected. Fuel is thus controlled so as to prevent fuel from arriving to a wall surface of a cylinder 2.

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