| 摘要 |
PROBLEM TO BE SOLVED: To provide an air/fuel ratio controller of a hybrid vehicle that can improve restartability and drivability of an engine.SOLUTION: There is provided an air/fuel ratio controller of a hybrid vehicle that includes an internal combustion engine and a rotary electric machine as power sources, and starts the internal combustion engine when a start condition is met and intermittently stops the internal combustion engine when an intermittent stop condition is met, the air/fuel ratio controller changes modes of control over the internal combustion engine at an intermittent stop (steps S5, S7, and S8) so as to optimize an air/fuel ratio when the internal combustion engine is started next time according to a difference between a richest value of an air/fuel ratio waveform at the start of the internal combustion engine and a preset reference richest value of the air/fuel ratio waveform (steps S4, S6). |
