PARTICULATE SUBSTANCE DETECTOR - HONDA MOTOR CO LTD

Title:

PARTICULATE SUBSTANCE DETECTOR

Document Type and Number:

Japanese Patent JP2010151554

Kind Code:

A

Abstract:

To provide a PM sensor capable of stably detecting the concentration of a PM without depending on the operation state or the exhaust temperature of an engine.

The PM sensor has a sensor electrode provided at the exhaust pipe of the engine and detects the concentration of PM in an exhaust gas on the basis of electrical characteristics of the sensor electrode to which PM contained in the exhaust gas is adhered. The PM sensor measures the electrostatic capacity change quantity ΔC of the sensor electrode to which the PM is adhered (S8) and detects the concentration D of the PM in the exhaust gas on the basis of the measured electrostatic capacity change quantity ΔC and the detected electrode temperature TAafter the dust collection of the sensor electrode (S9 and S10).

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Inventors:

MIKI MASANOBU
OKAYAMA TATSUYA
IWAMA KEIZO
OZAWA HIDETAKA
HATTORI MAKOTO

Application Number:

JP2008328812A

Publication Date:

July 08, 2010

Filing Date:

December 24, 2008

Export Citation:

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Assignee:

HONDA MOTOR CO LTD

International Classes:

G01N15/06; G01N25/18; G01N27/02

Domestic Patent References:

JP2008223495A	2008-09-25
JP2008139294A	2008-06-19

Foreign References:

WO2008096853A1

2008-08-14

Attorney, Agent or Firm:

Masayuki Masabayashi
Hayashi Ichiyoshi

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