PARTICULATE-MATTER PROCESSING DEVICE

Title:

PARTICULATE-MATTER PROCESSING DEVICE

Document Type and Number:

WIPO Patent Application WO/2012/124087

Kind Code:

A1

Abstract:

In the present invention, a particulate-matter processing device (1) is used to estimate the concentration of hydrocarbons in exhaust emissions with high precision. Said particulate-matter processing device (1), wherein a processing unit (3) containing an electrode (5) is provided in the exhaust passage (2) of an internal combustion engine, aggregates particulate matter by producing a potential difference between said electrode (5) and processing unit (3) and is provided with: a power supply (6) that is connected to and applies a voltage to the electrode (5); an insulating part (4) that electrically insulates the processing unit (3) and the exhaust passage (2) from each other; a grounding part (53) that grounds the processing unit (3); a detection device (9) that detects current in the grounding part (53); and an estimation device (7) that estimates the concentration of hydrocarbons in exhaust emissions on the basis of the current detected by the detection device (9) when the power supply (6) applies a voltage to the electrode (5).

Inventors:

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

Application Number:

PCT/JP2011/056294

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
JP2007009865A	2007-01-18
JP2001336467A	2001-12-07
JP2006194116A	2006-07-27
JP2006105081A	2006-04-20
JPH06173635A	1994-06-21
JPH08261048A	1996-10-08

Other References: