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61. 发明专利

JP2005061309A Exhaust emission control device for compression ignition internal combustion engine 审中-公开
标题翻译：用于压缩点火内燃机的排气控制装置
公开(公告)号：JP2005061309A
公开(公告)日：2005-03-10
申请号：JP2003291810
申请日：2003-08-11
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： HASEGAWA AKIRA , ITOU HISANORI , FUJIWARA KIYOSHI , MATSUMOTO TAKASHI
IPC分类号： F02B1/12 , F01N3/02 , F02B23/02 , F02D41/02 , F02D41/38 , F02M61/14
CPC分类号： Y02T10/125 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of further appropriately removing particulates accumulated on a filter, in an exhaust emission control device for a compression ignition internal combustion engine having the filter for collecting particulates in exhaust gas on an exhaust passage and performing combustion after forming premixed air-fuel mixture. SOLUTION: The exhaust emission control device for the compression ignition internal combustion engine is provided with the filter collecting particulates in exhaust gas and arranged on the exhaust passage and an accumulated amount estimating means for estimating amount of particulates accumulated on the filter. First fuel supply is performed during a period from an intake stroke to the latter stage of a compression stroke, and second fuel supply is performed near a top dead center of the compression stroke. Premixed air-fuel mixture of intake gas and fuel are formed inside a cylinder by fuel supplied by the first fuel supply, and combustion is performed after the premixed air-fuel mixture is formed. When the amount of the particulates accumulated on the filter exceeds predetermined amount (S101), fuel to be supplied by the first fuel supply is increased (S102) to increase fuel concentration of the premixed air-fuel mixture. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决问题的方案为了提供一种能够进一步适当地除去积聚在过滤器上的微粒的技术，在具有用于收集排气通道中的排气中的微粒的过滤器的压缩点火式内燃机的废气排放控制装置中，以及在形成预混合的空气 - 燃料混合物之后进行燃烧。解决方案：压缩式点火式内燃机的废气排放控制装置设置有排气中的过滤器收集微粒并排列在排气通道上，以及累积量估计装置，用于估计积聚在过滤器上的微粒量。在从进气冲程到压缩冲程后期的期间进行第一燃料供给，在压缩冲程的上止点附近进行第二燃料供给。进气和燃料的预混合空气 - 燃料混合物通过由第一燃料供应的燃料在气缸内形成，并且在形成预混合空气 - 燃料混合物之后进行燃烧。当积存在过滤器上的微粒量超过预定量时（S101），由第一燃料供给供给的燃料增加（S102），以增加预混合空气 - 燃料混合物的燃料浓度。版权所有（C）2005，JPO＆NCIPI

62. 发明专利

JPH0549929A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH0549929A
公开(公告)日：1993-03-02
申请号：JP21384191
申请日：1991-08-26
申请人： TOYOTA MOTOR CORP
发明人： ITOU HISANORI
IPC分类号： B01D53/94 , B01J23/46 , B01J35/04
摘要： PURPOSE:To provide the subject catalyst excellent in heat resistance, reduced in the thermal deterioration of its catalytically active component and enhanced in a purifying rate. CONSTITUTION:A catalyst for purifying exhaust gas is formed into a monolithic structure having a catalyst supported layer mainly composed of activated alumina, and palladium and rhodium are supported on said structure on the exhaust gas inflow side thereof and platinum and rhodium are supported thereon on the exhaust gas outflow side thereof. The support amount of rhodium of the catalyst supported layer on the outlet side is larger than that on the inlet side.

63. 发明专利

JPH0368448A CATALYST FOR PURIFICATION OF EXHAUST GAS 失效
公开(公告)号：JPH0368448A
公开(公告)日：1991-03-25
申请号：JP20642989
申请日：1989-08-09
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： ITOU HISANORI , MATSUMOTO SHINICHI , SHINJO HIROBUMI , KIMURA MAREO
IPC分类号： B01D53/94 , B01J23/44 , B01J23/46
摘要： PURPOSE:To prevent the poisoning deterioration of a catalyst at the time of purification of exhaust gas by forming a silica layer supporting Pd and an alumina layer supporting at least one of Pt and Rh on the base material of a carrier to obtain the catalyst. CONSTITUTION:The base material 11 of a monolithic cordierite carrier is dipped in an amorphous silica slurry, dried and fired to form a silica layer. The base material is then dipped in an aq. palladium nitrate soln., dried and calcined at a prescribed temp. to form a silica layer 21 supporting Pd. The base material is further dipped in an activated alumina slurry, dried and fired to form an alumina layer. The base material is then dipped in an aq. dinitrodiamine platinum soln., dried, dipped in an aq. rhodium chloride soln. and dried. An alumina layer 31 supporting Pt and Rh is formed and a catalyst for purification of exhaust gas is obtd.

64. 发明专利

JPH02102735A CATALYST FOR PURIFICATION OF EXHAUST GAS 失效
公开(公告)号：JPH02102735A
公开(公告)日：1990-04-16
申请号：JP25546688
申请日：1988-10-11
申请人： TOYOTA MOTOR CORP
发明人： ITOU HISANORI , MATSUMOTO SHINICHI
IPC分类号： F01N3/28 , B01D53/94 , B01J23/46
摘要： PURPOSE:To effectively utilize noble metals and to obtain durable high activity catalyst for purification of exhaust gas by incorporating Pd-Nd multiple oxide and Rh-La multiple oxide into an alumina coated layer on a fireproof carrier. CONSTITUTION:A proper reagent such as ammonium carbonate is added to a soln. contg. a easily soluble Pd compd. such as palladium nitrate and a easily soluble Nd compd. such as neodymium nitrate to form a Pd-Nd coprecipitate. An Rh-La coprecipitate is similarly formed. The coprecipitates are added to an alumina slurry and a fireproof carrier is coated with the slurry, dried and calcined to obtain a catalyst. Since the mixed state of Pd and Nd and that of Rh and La are very satisfactory and the growth of Pd and Rh grains is inhibited, the noble metals are effectively utilized without waste and the activity and durability of the catalyst are enhanced.

65. 发明专利

JPH01139145A CATALYST FOR CONTROLLING EXHAUST EMISSION 失效
公开(公告)号：JPH01139145A
公开(公告)日：1989-05-31
申请号：JP29642287
申请日：1987-11-25
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： ITOU HISANORI , MATSUMOTO SHINICHI , MURAKI HIDEAKI , KONDO SHIRO
IPC分类号： B01D53/94 , B01J29/06 , B01J35/04
摘要： PURPOSE:To improve the ability eliminating NOx, CO, etc., by arranging a catalyst carrying transition metal on zeolite by ion-exchanging, on the exhaust inlet side and an oxidation catalyst or a ternary catalyst carrying a catalytic component on alumina, on the exhaust outlet side. CONSTITUTION:The catalyst for controlling exhaust emission is composed by arranging the reduction catalyst 1 on the exhaust inlet side of a catalyst vessel 3 and the oxidation catalyst or ternary catalyst 2 on the exhaust outlet side of the catalyst vessel 3, leaving a space. The reduction catalyst 1 is formed by exchanging Na in the zeolite for transition metal such as Cu, Co, Ni, Cr by ion-exhanging, and by carrying. The oxidation catalyst or ternary catalyst is formed by carrying nobel metal such as Pt, Pd, Ph, Ru, or base metal such as La, Ce on alumina such as activated alumina. The obtd. catalyst for controlling exhaust emission can remove NOx with the reduction catalyst, CO and HC with the oxidation catalyst, and NOx, CO and CH with the ternary catalyst.

66. 发明专利

JPH01115454A MONOLITHIC CATALYST FOR PURIFICATION OF EXHAUST GAS 失效
公开(公告)号：JPH01115454A
公开(公告)日：1989-05-08
申请号：JP27397487
申请日：1987-10-29
申请人： TOYOTA MOTOR CORP
发明人： ITOU HISANORI , MATSUMOTO SHINICHI
IPC分类号： B01D53/94 , B01J23/56 , B01J23/63
摘要： PURPOSE:To increase ability to purity exhaust gas by forming an activated alumina layer mixed with acidic powder and basic powder on the surface of a monolithic carrier and by supporting Pd on the acidic powder and Rh on the basic powder. CONSTITUTION:The base material of a monolithic carrier such as a monolithic cordierite carrier is dipped in an activated alumina slurry, dried and calcined to form an activated alumina layer mixed with acidic powder and basic powder on the surface of the base material. The resulting monolithic carrier is dipped in an ag. soln. of a tetranitropalladic potassium salt, etc., to support Pd on the acidic powder in the activated alumina layer. The carrier is further dipped in an aq. soln. of hexamminerhodium (III) nitrate, etc., to support Rh on the basic powder in the activated alumina layer. Thus, a monolithic catalyst for purification of exhaust gas is obtd.

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