| 摘要 |
<p>The present invention aims at improving a misfire detecting accuracy by making a detector learn a misfire level constituting a misfire judgement standard. An indicated mean effective pressure is calculated by integrating an inner pressure of a cylinder. A judgement is made as to whether a fuel has been cut or not. When a fuel has not been cut, a misfire level is retrieved from a misfire level map drawn by the rotational speeds of an engine, and the indicated mean effective pressure and misfire level are compared with each other to make a judgement concerning the occurrence of misfire. When a fuel supply has been stopped the data in the misfire level map are rewritten with the indicated mean effective pressure during the fuel-stop period used as a misfire level corresponding to an actual rotational speed of the engine.</p> |
