| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor capable of highly accurately detecting an amount of PM contained in exhaust gas and an exhaust gas temperature.SOLUTION: A sensor comprises: a filter member 31 including a plurality of cells disposed in an exhaust passage 110 of an internal combustion engine 100 and collecting particulate matter (PM) contained in exhaust gas; at least a pair of electrode members 32 and 33 disposed to face each other across the cells and forming a capacitor; an exhaust-gas-temperature estimation and computation unit 41 estimating an exhaust gas temperature on the basis of a capacitance between the electrode members 32 and 33; and a PM-amount estimation and computation unit 43 estimating the PM in the exhaust gas on the basis of the capacitance between the electrode members 32 and 33.SELECTED DRAWING: Figure 2 |
