PARTICULATE-MATTER PROCESSING DEVICE

Title:

PARTICULATE-MATTER PROCESSING DEVICE

Document Type and Number:

WIPO Patent Application WO/2012/124091

Kind Code:

A1

Abstract:

The present invention estimates the amount of aggregation of particulate matter with high precision. Said particulate-matter processing device, wherein a processing unit containing an electrode is provided in the exhaust passage of an internal combustion engine, aggregates particulate matter by producing a potential difference between said electrode and processing unit and is provided with: a power supply that is connected to and applies a voltage to the electrode; a current-detection device that detects current flowing through the electrode; an estimation device that estimates the amount of aggregation of particulate matter on the basis of the current detected when a voltage is applied to the electrode; an air-fuel ratio detection device that detects or estimates the air-fuel ratio of exhaust emissions flowing through the exhaust passage; and a prohibition device that prohibits the abovementioned estimation on the part of the estimation device when the air-fuel ratio is rich.

Inventors:

MITANI SHINICHI (JP)
NOMURA HIROSHI (JP)
MURASE EIJI (JP)

Application Number:

PCT/JP2011/056300

Publication Date:

September 20, 2012

Filing Date:

March 16, 2011

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
MITANI SHINICHI (JP)
NOMURA HIROSHI (JP)
MURASE EIJI (JP)

International Classes:

B03C3/02; F01N3/02

Foreign References:

JP2006046281A	2006-02-16
JP2006194116A	2006-07-27
JP2006105081A	2006-04-20
JP2006194116A	2006-07-27

Other References: