Title:
EXHAUST EMISSION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021181766
Kind Code:
A
Abstract:
To efficiently execute both filter reproduction processing for removing soot accumulated inside a filter, and soot burning processing for removing soot accumulated at a portion of a gap between the filter and an exhaust pipe.SOLUTION: A controller 27 that controls the energization of a filter 19 and a fuel addition valve 17 in an exhaust emission control device executes filter reproduction processing when an electric resistance value between a pair of electrodes 21 and 24 fixed to the outer peripheral surface of the filter 19 is less than the default reproduction determination value; and execute soot burning processing when the electric resistance value is less than a soot burning determination value preset as a value larger than the reproduction determination value and equal to or more than the reproduction determination value.SELECTED DRAWING: Figure 1
Inventors:
SADAMITSU TAKAHIRO
Application Number:
JP2020087448A
Publication Date:
November 25, 2021
Filing Date:
May 19, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F01N3/18; F01N3/025; F01N3/027; F01N3/035; F01N3/20; F02D41/04; F02D41/30
Domestic Patent References:
| JPS60110617U | 1985-07-26 | |||
| JP2015014253A | 2015-01-22 | |||
| JP2002021537A | 2002-01-23 | |||
| JPH0650130A | 1994-02-22 | |||
| JP2016075240A | 2016-05-12 |
Foreign References:
| WO2014064758A1 | 2014-05-01 | |||
| WO1993013303A1 | 1993-07-08 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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