EXHAUST PARTICULATE MATTER MEASURING APPARATUS

Title:

EXHAUST PARTICULATE MATTER MEASURING APPARATUS

Document Type and Number:

WIPO Patent Application WO2007132334

Kind Code:

A8

Abstract:

A PM sensor (62) for measuring particle matter in exhaust gas is disposed between a three-way catalyst (49) and a muffler (5) in an exhaust pipe (47), and has an oxidation catalyst (71) and an electrical heater (72) that are stacked together, and a temperature sensor (73) that measures a temperature of the oxidation catalyst (71) interposed between the oxidation catalyst (71) and the electrical heater (72). The oxidation catalyst (71) carries a ceria as an oxygen-storing agent that occludes oxygen in the exhaust gas, and a ECU (51) calculates a sediment amount of the exhaust particulate matter based on an amount of temperature rise when the electrical heater (72) heats the oxidation catalyst (71) and an accumulated value of an intake air amount.

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Inventors:

MIZOGUCHI HIROAKI (JP)
FUJIWARA TAKAHIKO (JP)

Application Number:

PCT/IB2007/001240

Publication Date:

February 21, 2008

Filing Date:

May 14, 2007

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
MIZOGUCHI HIROAKI (JP)
FUJIWARA TAKAHIKO (JP)

International Classes:

G01N25/00; G01N15/06

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