Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP6897605
Kind Code:
B2
Abstract:
An exhaust gas purification apparatus for an internal combustion engine includes a filter supporting the catalyst with an oxygen storage capacity, an air fuel ratio sensor to detect an air fuel ratio of exhaust gas at the downstream side of the filter, and a controller configured to change an air fuel ratio of exhaust gas flowing into the filter, to estimate an amount of particulate matter deposited in an interior of a partition wall of the filter, estimate a maximum storable oxygen amount of the catalyst from a change of the air fuel ratio of exhaust gas obtained by the air fuel ratio sensor at the time when the air fuel ratio of exhaust gas is changed by the controller, and correct the maximum storable oxygen amount of the catalyst based on the amount of particulate matter deposited in the interior of the partition wall of the filter.
Inventors:
Hironari Hashimoto
Shuntaro Okazaki
Shuntaro Okazaki
Application Number:
JP2018038588A
Publication Date:
June 30, 2021
Filing Date:
March 05, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/20; F01N3/035; F02D43/00
Domestic Patent References:
| JP2017115810A | ||||
| JP2017110596A | ||||
| JP2005264808A | ||||
| JP2001329832A | ||||
| JP2003301717A | ||||
| JP2011226312A | ||||
| JP2009270503A |
Foreign References:
| US20120304623 |
Attorney, Agent or Firm:
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Atsushi Kokubo
Hironobu Yazawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Atsushi Kokubo
Hironobu Yazawa