| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a particulate sensor element capable of accurately detecting the amount of particulate and a failure detection device. <P>SOLUTION: The particulate sensor element 1 for detecting the amount of particulate and the failure detection device using the same are provided. The particulate sensor element 1 includes a base material 11 made of ceramics, primary and secondary cells 12, 13 provided on the base material 11 and collecting particulate, a heater 14 heating and burning particulate collected by the same, and a differential heat detection means 15 detecting differencial heat during combustion of particulate collected by the primary and the secondary cells 12, 13. The primary cell 12 supports a particulate combustion catalyst 16 consisting of a mixture of zeolite and alkali metal element source and/or alkali earth metal element source, or consists of sodalite, which are fired at a temperature of not less than 600°C. The secondary cell 13 supports no particulate combustion catalyst. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
