| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine the presence of a misfire of an engine with high accuracy even during execution of vibration damping control controlling a second MG (motor generator) to suppress vibration of a power transmission system, in a hybrid vehicle loaded with the engine, and first and second MGs. <P>SOLUTION: When comparing engine rotation fluctuation information (engine rotation fluctuation or information having relevance thereto) with a misfire decision value to perform misfire decision determining the presence of the misfire of the engine 11, this controller determines that the engine rotation fluctuation becomes small during the execution of the vibration damping control, and changes the misfire decision value during the execution of the vibration damping control to a misfire decision value easy to be determined that the misfire is present as compared to a normal misfire decision value (a misfire decision value during a stop of the vibration damping control). Thereby, it is possible to determine the presence of the misfire of the engine 11 with high accuracy even during the execution of the vibration damping control, so that it can be prevented that a state that the engine rotation fluctuation becomes small due to an effect of the vibration damping control is erroneously determined as the misfire absence though the misfire actually occurs. <P>COPYRIGHT: (C)2011,JPO&INPIT |
