| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a particulate matter detection device detecting particulate matter highly accurately without lowering output of an internal combustion engine and fuel economy. Ž<P>SOLUTION: This particulate matter detection device 1 includes: an exhaust gas main passage 10 through which exhaust gas containing the particulate matter flows; an exhaust gas branch passage 12 provided and branched from the exhaust gas main passage 10, through which a part of the exhaust gas flows; a particulate matter concentration device 15 provided in the middle of the exhaust gas branch passage 12, for increasing a concentration of the particulate matter in the exhaust gas; and a particulate matter detection sensor 11 provided downstream of the particulate matter concentration device 15 in the exhaust gas branch passage 12, for detecting the concentration of the particulate matter in the exhaust gas. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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