SOX POISONING REGENERATION METHOD FOR EXHAUST GAS PURIFYING CATALYST

Title:

SOX POISONING REGENERATION METHOD FOR EXHAUST GAS PURIFYING CATALYST

Document Type and Number:

Japanese Patent JP2006161789

Kind Code:

A

Abstract:

To provide technology for suppressing worsening of SOx poisoning regeneration efficiency by suppressing fluctuation of temperature of absorption reduction type NOx catalyst in SOx poisoning regeneration and suppressing worsening of fuel economy in SOx poisoning regeneration.

When performing SOx poisoning regeneration, a SOx poisoning regeneration place is decided (S102) and target combustion A/F and target amount of reducing agent addition are set (S105, S106) in accordance with a position of the decided SOx poisoning regeneration place (S104) in the absorption reduction type NOx catalyst 10.

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Inventors:

FUKUDA KOICHIRO
MATSUOKA HIROKI
SUYAMA KINGO
MIYAKE TERUHIKO

Application Number:

JP2004358829A

Publication Date:

June 22, 2006

Filing Date:

December 10, 2004

Export Citation:

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Assignee:

TOYOTA MOTOR CORP

International Classes:

F01N3/20; B01D53/86; B01D53/94; F01N3/08; F01N3/18; F01N3/28

Attorney, Agent or Firm:

Yoshiyuki Kawaguchi
Hidemi Matsukura
Mayuko Wakuda
Kazunobu Sera
Tsutomu Toyama

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