| 摘要 |
<p>PROBLEM TO BE SOLVED: To produce an exhaust gas filter easy in temp. control at the time of reproduction and excellent in durability by forming a honeycomb structure by using aluminum titanate as a main component, stopping one end part of each cell formed in the structure and also setting its thermal conductivity within a specified range. SOLUTION: In the exhaust gas filter for purifying the exhaust gas exhausted from the diesel engine of an automobile, ship, etc., the honeycomb structure consisting essentially of the aluminum titanate is formed, and one end part of each cell 1 formed in the honeycomb structure is sealed. Then, the thermal conductivity of the honeycomb stricture is set to 0.07-0.17kcal/mh deg.C, preferably 0.11-0.13kcal/mh deg.C. That is, the thermal conductivity is kept in an optimum range by setting porosity with in a range of 25-65%, preferably 45-55%, and the number of cells 1 within the range of 70-250/inch<2> , especially preferably 100-200/inch<2> and cell wall 2 thickness within the range of 0.15-0.75mm.</p> |
