Title:
ＰＭ堆積検出装置
Document Type and Number:
Japanese Patent JP6794050
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a PM accumulation detection device which can accurately detect the accumulation of PMs while being excellent in terms of a cost and a size compared with a constitution which uses a pressure loss at the detection of the accumulation of the PMs at a plasma reactor.SOLUTION: When a voltage is applied between electrodes of a plasma reactor 1, electrical discharge is generated between the electrodes, and a plasma is generated by the electrical discharge. PMs contained in an exhaust gas of an engine are oxidized and removed by an oxidation action of the plasma. A current flowing in the electrodes is changed depending on a state of the electrical discharge between the electrodes. When a minimum value of the current flowing in the electrodes at the electrical discharge of the plasma reactor 1 is not smaller than a prescribed threshold, a PM accumulation determination part 45 determines that the PMs are accumulated on a surface of an electrode panel of the plasma reactor 1.SELECTED DRAWING: Figure 3
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Inventors:
Tetsuya Sato
Kazuya Naito
Ryoichi Shimamura
Sho Matsuyama
Fujisaki Junto
Taniguchi Shoji
Kazuya Naito
Ryoichi Shimamura
Sho Matsuyama
Fujisaki Junto
Taniguchi Shoji
Application Number:
JP2017014719A
Publication Date:
December 02, 2020
Filing Date:
January 30, 2017
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
F01N3/023; B01D46/42; F01N3/01; F01N11/00; H05H1/24
Domestic Patent References:
| JP201716858A | ||||
| JP2001314749A |
Foreign References:
| WO2017002828A1 | ||||
| WO2009119845A1 |
Attorney, Agent or Firm:
Yuichi Minagawa