Exhaust emission control device

Abstract

An object is to make it possible to accurately detect temperature of exhaust directly flowing through a particulate filter stored in a muffler. In an exhaust emission control device with the particulate filter 9 stored in the muffler 1 which in turn is incorporated in an exhaust pipe, a recess is formed by a cup 21 at a temperature detecting area on a casing 2 of the muffler 1. The recess is concave up to a position in proximity to the particulate filter 9 in the casing 2. A temperature sensor 22 is arranged to penetrate a deepest portion of the recess formed by the cup 21.

1 . An exhaust emission control device with a particulate filter stored in a muffler which in turn is incorporated in an exhaust pipe, comprising a recess at a temperature detecting area on a casing of the muffler, said recess being concave up to a position in proximity to the particulate filter in the casing, and a temperature sensor arranged to penetrate a deepest portion of said recess.  
   
   
       2 . The exhaust emission control device as claimed in  claim 1 , wherein the recess is in the form of a cup and an operation space is secured around the temperature sensor penetrating the recess to allow for operation of a tool for attachment/detachment of said temperature sensor.