Title:
Filter abnormality decision device
Document Type and Number:
Japanese Patent JP6256421
Kind Code:
B2
Abstract:
A filter malfunction determination apparatus includes a calculator that calculates, upon determination that a rapid output increase has occurred, an amount of change of a parameter value output from a sensor before and after the rapid output increase. The calculator calculates, based on the calculated amount of change, a correction value for correcting at least one of the parameter value output from the sensor and a malfunction determination threshold. The filter malfunction determination apparatus includes an offset corrector configured to perform, based on the correction value, offset correction of at least one of the parameter value output from the sensor and the malfunction determination threshold after determination that the rapid output increase has occurred.
Inventors:
Masahiro Yamamoto
Manabu Yoshidome
Masayuki Tamura
Miyagawa Go
Manabu Yoshidome
Masayuki Tamura
Miyagawa Go
Application Number:
JP2015132866A
Publication Date:
January 10, 2018
Filing Date:
July 01, 2015
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F01N3/18; F01N3/023
Domestic Patent References:
| JP201180439A | ||||
| JP201237373A | ||||
| JP2010275877A |
Foreign References:
| WO2012114518A1 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita