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Title:
APPARATUS FOR DETERMINATION OF COMPONENT PASSING THROUGH CATALYST, AND EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2010/079621
Kind Code:
A1
Abstract:
Disclosed is an apparatus for determining a component that passes through a catalyst, which comprises: a selective reduction NOX catalyst (C1) which is arranged in a flow path (P) of an exhaust gas and can exhibit a NOX-purifying ability in the presence of ammonia; an oxidation catalyst (C2) which is arranged downstream from the selective reduction NOX catalyst (C1); an upstream-side sensor (S1) which is arranged between the selective reduction NOX catalyst (C1) and the oxidation catalyst (C2) and has a property to detect ammonia and NOX; a downstream-side sensor (S2) which is arranged downstream from the oxidation catalyst (C2) and has a property to detect ammonia and NOX; and a determination means for determining a component that passes through the selective reduction NOX catalyst based on the correlation between an output of the upstream-side sensor (S1) and an output of the downstream-side sensor (S2).

Inventors:
SATO MASAAKI (JP)
ODA TOMIHISA (JP)
ASAURA SHINYA (JP)
TOSHIOKA SHUNSUKE (JP)
Application Number:
PCT/JP2009/050257
Publication Date:
July 15, 2010
Filing Date:
January 09, 2009
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
SATO MASAAKI (JP)
ODA TOMIHISA (JP)
ASAURA SHINYA (JP)
TOSHIOKA SHUNSUKE (JP)
International Classes:
F01N3/08
Domestic Patent References:
WO2008120649A12008-10-09
WO2008078645A12008-07-03
Foreign References:
JP2003293743A2003-10-15
JP2005127256A2005-05-19
Attorney, Agent or Firm:
TANI, Yoshikazu et al. (JP)
Valley Yoshikazu (JP)
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