| abstract |
An object of the present invention is to provide an insertion hole through which a sensor can be inserted on the end face of a honeycomb structure so that the temperature, oxygen concentration, etc. of the honeycomb structure can be directly measured. Provided are a honeycomb structure and a honeycomb filter that can be easily mounted, can be mounted with various types of sensors according to the measurement application, such as OBD measurement, oxygen concentration, NO X concentration, etc. There is. In particular, when used in a DPF, it can be suitably used without soot leakage. A honeycomb structure is formed by a plurality of cells that are partitioned by a porous partition wall and serve as a fluid flow path. An insertion hole 9 into which the sensor can be inserted is formed on the end face of the honeycomb structure, and breakage prevention means 17 is provided on the inner periphery or in the vicinity of the insertion hole. [Selection] Figure 4A |