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11. 发明专利

JPH0442809A HEAT-RESISTANT FIBROUS ALUMINA HAVING HIGH SURFACE AREA AND ITS PRODUCTION 失效
公开(公告)号：JPH0442809A
公开(公告)日：1992-02-13
申请号：JP14859390
申请日：1990-06-08
申请人： CATALER IND CO
发明人： SATO MASAYASU , MATSUURA SHINJI , TATEISHI SHIYUUJI , UENO AKISHI , TSUNODA NORIYOSHI
IPC分类号： B01J21/04 , B01J35/06 , C01F7/02
摘要： PURPOSE:To obtain thermally stable alumina having high specific surface area by atomizing a solution of alumina sol comprising fibrous aluminum hydroxide and burning. CONSTITUTION:Alumina sol comprising fibrous aluminum hydroxide is prepared. The alumina sol is atomized, instantly dried with air and burnt to give the title alumina having >=30m /g specific surface area after burning at

12. 发明专利

JPH07299360A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH07299360A
公开(公告)日：1995-11-14
申请号：JP9766394
申请日：1994-05-11
申请人： CATALER IND CO , DAIHATSU MOTOR CO LTD
发明人： SATOU HIRONORI , MATSUURA SHINJI , TAKI KENICHI , TANAKA HIROHISA , TAKAHASHI ICHIRO
IPC分类号： B01D53/86 , B01D53/94 , B01J23/56 , B01J23/63
摘要： PURPOSE:To obtain a ternary catalyst for an internal combustion engine high in durability. CONSTITUTION:A catalyst carrier is coated with a mixture consisting of catalytically active components prepared by supporting platinum and/or palladium on cerium oxide stabilized by rare earth metal (excepting zirconium and cerium) and zirconium and refractory inorg. oxide based on activated alumina and, thereafter, rhodium and/or rhodium and a platinum group metal are further supported on the carrier to obtain the objective catalyst for purifying exhaust gas. Since platinum and/or palladium are preliminarily supported on stabilized cerium oxide, the sintering of platinum and palladium is suppressed and catalytic activity can be kept long.

13. 发明专利

JPS63134058A CATALYST FOR CLEANING EXHAUST GAS 失效
公开(公告)号：JPS63134058A
公开(公告)日：1988-06-06
申请号：JP28062386
申请日：1986-11-27
申请人： CATALER IND CO
发明人： MATSUURA SHINJI , SATO MASAYASU
IPC分类号： B01D53/94 , B01J23/56 , B01J23/63
摘要： PURPOSE:To improve high-temp. durability of a catalyst by using alumina essentially consisting of La-beta-Al2O3 which is the compound oxide of aluminum and lanthanum to alumina which is a catalyst carrier. CONSTITUTION:A catalyst contg. at least 2 kinds selected from cerium, rhodium, platinum and palladium is prepd. by using the alumina essentially consisting of La-beta-Al2O3. Formation of LaAlO3 and and (CeLa)AlO3 is then prevented by applying the alumina essentially consisting of La-beta-Al2O3 to the carrier, by which the phase change of the carrier is suppressed and the high-temp. durability is improved. The catalyst which simultaneously removes NOx, carbon monoxide and hydrocarbon is thus obtd.

14. 发明专利

JPS59138713A Control method of diesel exhaust particulate purifier 失效
标题翻译：柴油机颗粒净化器的控制方法
公开(公告)号：JPS59138713A
公开(公告)日：1984-08-09
申请号：JP1391183
申请日：1983-01-31
申请人： Toyota Motor Corp
发明人： OBATA KIYOSHI , TAKAMA KENICHIROU , MATSUURA SHINJI
IPC分类号： F01N3/02 , F01N3/027 , F01N3/032 , F01N9/00
CPC分类号： F01N3/032 , F01N3/027 , F01N9/00 , Y02T10/47
摘要： PURPOSE:To prevent injury caused melting of a trap which collects particulates in exhaust gas by opening a trap bypass passage when the temperature of exhaust gas at the inlet of the trap exceeds a set value at a specified rate or more during a specified period and when the concentration of oxygen in exhaust gas is increased. CONSTITUTION:A trap which collects particulates within exhaust gas is provided in the exhaust pipe 3 of a Diesel engine 11 and a particulate burning heater 5 is mounted at the upstream side of the trap. Based on a negative pressure signal Sv, a suction throttle valve opening signal Sd, a water temperature signal St, a load signal Sl, a revolution speed signal Sn and so on, a controller 25, at the regenerating time of the trap, electrifies and heats the heater 5 and opens an opening and closing valve 15 which is disposed in a trap bypass passage 13. In addition, based on an inflow gas temperature signal Se sent from an exhaust temperature sensor 51 and a signal Sa informing any increase of 02 concentration, the controller 25 opens, regardless of the regeneration required, the opening and closing valve 15 when the temperature of the inflow gas exceeds a set value at a specified rate or more during a specified period and when the concentration of 02 within exhaust gas is increased.
摘要翻译：目的：为了防止在特定时间段内当陷阱入口处的废气温度超过规定值或更高的设定值时，通过打开捕集器旁路通道来收集废气中的微粒而产生的伤害，废气中的氧浓度增加。构成：在柴油发动机11的排气管3中设置有收集废气中的微粒的捕集器，在捕集器的上游侧安装有微粒燃烧加热器5。基于负压信号Sv，抽吸节流阀开启信号Sd，水温信号St，负载信号S1，转速信号Sn等，控制器25在捕集器的再生时间通电和加热加热器5并打开设置在捕集器旁通通道13中的开闭阀15.另外，基于从排气温度传感器51发送的流入气体温度信号Se和通知任何氧浓度增加的信号Sa 当规定的时间内，当流入气体的温度超过规定的速度以上且在废气中的浓度增加时，控制器25打开，而不管所需要的再生时的开闭阀15 。

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