EXHAUST EMISSION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce the cost for taking a measure against thermal affection by installing a sensor on the outer cylinder of a muffler in its limited area receiving less thermal affection. SOLUTION: An exhaust emission control device is structured so that an aeration type purifying material such as particulate filter for purifying the exhaust gas by allowing it to pass through is installed in the muffler 5 and that the sensor such as a pressure sensor 18 is mounted on the outer cylinder 7 of the muffler 5, wherein the sensor installation is made in a muffler outer cylinder area of 360 degs centering its axis x of the outer cylinder 7 belonging to either the range G1 of 30 degs. upward and the range G2 of 75 degs. downward by reference to the horizontal line y perpendicularly intersecting the axis x from the zero deg. position to the left and right pinching the axis x on the horizontal line y.