| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a state determining device for a hydrocarbon adsorbent for accurately determining the state including the deterioration of the hydrocarbon adsorbent independently of a change in the flow rate of exhaust gas by compensating for a variation in moisture adsorbing capability of the hydrocarbon adsorbent resulting from the change in flow rate of the exhaust gas. <P>SOLUTION: The state determining device for the hydrocarbon adsorbent is provided in an exhaust system 2 for an internal combustion engine 1 for determining the state of the hydrocarbon adsorbent 16 capable of adsorbing hydrocarbon and moisture in exhaust gas. It comprises a humidity detecting means 22 for detecting a humidity VHUMR of the exhaust gas passing through the hydrocarbon adsorbent 16, flow rate parameter detecting means 24, 25, 26 for detecting flow rate parameters Vgrad representing the flow rates of the exhaust gas, and adsorbent state determining means 25 for determining the state of the adsorbent 16 depending on the detected humidity and flow rate parameters of the exhaust gas. <P>COPYRIGHT: (C)2004,JPO</p> |
