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1. US20120240561 - EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE

官庁 アメリカ合衆国
出願番号 13499115
出願日 01.12.2009
公開番号 20120240561
公開日 27.09.2012
公報種別 A1
IPC
F01N 3/035
F機械工学;照明;加熱;武器;爆破
01機械または機関一般;機関設備一般;蒸気機関
N機械または機関のためのガス流消音器または排気装置一般;内燃機関用ガス流消音器または排気装置
3排気の清浄,無害化または他の処理をする手段をもつ排気もしくは消音装置
02排気を冷却するためのもの,または排気の固体成分を除去するためのもの
021フィルタを用いるもの
033他の装置と組み合わせたもの
035触媒反応装置を備えたもの
CPC
F01N 3/0814
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
0807by using absorbents or adsorbents
0814combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
B01D 53/944
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
944Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
B01D 53/9477
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9459Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
9477with catalysts positioned on separate bricks, e.g. exhaust systems
B01D 53/9486
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9481Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
9486for storing hydrocarbons
B01D 2253/108
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2253Adsorbents used in seperation treatment of gases and vapours
10Inorganic adsorbents
106Silica or silicates
108Zeolites
B01D 2255/102
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
10Noble metals or compounds thereof
102Platinum group metals
出願人 Sobue Yuichi
Imai Daichi
Oshikawa Katsuhiko
Otsuki Hiroshi
Asanuma Takamitsu
Sugawara Kou
発明者 Sobue Yuichi
Imai Daichi
Oshikawa Katsuhiko
Otsuki Hiroshi
Asanuma Takamitsu
Sugawara Kou
発明の名称
(EN) EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
要約
(EN)

An exhaust purification system of an internal combustion engine which is controlled so that a combustion air-fuel ratio becomes lean at the time of ordinary operation, provided with an adsorption part which adsorb unburned fuel which is contained in exhaust gas and an oxidation part which has catalyst particles of a metal which oxidizes carbon monoxide. The adsorption part includes zeolite which substantially adsorbs the lower olefins which are contained in the exhaust gas. The adsorption part and the oxidation part are arranged so that the exhaust gas contacts the adsorption part, then contacts the oxidation part.