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Title:
EXHAUST EMISSION CONTROL METHOD OF AN INTERNAL COMBUSTION ENGINE USING ALCOHOL MIXED FUEL AND EXHAUST EMISSION CONTROL DEVICE USING THE SAME METHOD
Document Type and Number:
Japanese Patent JP2013119845
Kind Code:
A
Abstract:

To enhance the purification performance of the exhaust emission control device by using an adsorbent capable of efficiently adsorbing unburnt alcohol contained in a discharged exhaust gas.

A first adsorbent, a second adsorbent and an exhaust purification catalyst are arranged in order from the upstream side of the flow of the exhaust gas, the first adsorbent and the send adsorbent comprise zeolite having specific SiO2/Al2O3 molar ratio in a prescribed range and the molar ratio SiO2/Al2O3 of the zeolite comprising the first adsorbent is smaller than the molar ratio SiO2/Al2O3 of the second adsorbent to increase the alcohol adsorption of the first adsorbent and the second adsorbent as the whole and as a result, even in the cold start or the like, the unburnt alcohol contained in the exhaust gas is efficiently removed by the exhaust purification catalyst.


Inventors:
TSUKAMOTO KOJI
MIYOSHI NAOTO
MIYATA SUSUMU
Application Number:
JP2011269622A
Publication Date:
June 17, 2013
Filing Date:
December 09, 2011
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F01N3/18; B01D53/44; B01D53/81; B01J20/18; B01J20/30; F01N3/24; B01D53/94
Domestic Patent References:
JPS62189309A1987-08-19
JPH03288544A1991-12-18
JP2004011443A2004-01-15
JP2010031820A2010-02-12
JP2007002022A2007-01-11
JP2008261255A2008-10-30
JP2004008855A2004-01-15
JP2009274003A2009-11-26
JP2012148273A2012-08-09
JPS62189309A1987-08-19
JPH03288544A1991-12-18
JP2004011443A2004-01-15
JP2010031820A2010-02-12
JP2007002022A2007-01-11
JP2008261255A2008-10-30
JP2004008855A2004-01-15
JP2009274003A2009-11-26
JP2012148273A2012-08-09
Attorney, Agent or Firm:
Patent business corporation Prospec patent office



 
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