| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure a learning opportunity of misfire determination more reliably, and to determine a misfire in an engine regardless of a secular change more properly. <P>SOLUTION: If a user indicates ''ready-off'' (S200), the engine is independently run at target rotation speed Ne* and fuel cut to a specific cylinder is performed to bring about a pseudo misfire state (S210 to S270), and a threshold for misfire determination is learned on the basis of a rotation variation RF of the engine detected in the pseudo misfire state. Then, when the learning is completed (S280), the engine is stopped to assume a ready-off state (S310, S320). Thereby, the learning opportunity of misfire determination can be secured more reliably, and the misfire of the engine can be determined properly regardless of the secular change. <P>COPYRIGHT: (C)2013,JPO&INPIT |
