Tubular structure for fixing particulate matter detection device

摘要

There is disclosed a particulate matter detection device fixing tubular structure which is excellent in heat release properties. A particulate matter detection device fixing tubular structure 100 includes a tubular first holding tube 1 having a fixing structure portion 4 at a first end 2 as one end thereof; and a tubular second holding tube 11 having one end 12 fixed to a second end 3 as the other end of the first holding tube 1 so that the second holding tube is coaxial with the first holding tube 1. A particulate matter detection device 21 made of a ceramic material, prolonged in one direction and having a detecting portion 22 of a particulate matter at one end thereof and a takeout portion 23 of a wiring line at the other end thereof is disposed in the tubular structure so that the detecting portion 22 projects to the outside from the first end 2 of the first holding tube 1 and so that the takeout portion 23 of the wiring line is positioned in the second holding tube 11, and the particulate matter detection device is fixed to a pipe of an exhaust gas by the fixing structure portion 4 of the first holding tube 1 so that the detecting portion 22 of the particulate matter detection device 21 is positioned in the pipe of the exhaust gas.