| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid-vehicular control apparatus capable of holding vibration caused by an internal combustion engine within a permissible range while improving a system efficiency by changing a shift stage.SOLUTION: A ratio of engine power mechanically transmitted to a drive shaft 23 from an internal combustion engine 2 to output power of the drive shaft 23 is defined as a direct transmission ratio. Further, in a case where a motor rotation speed of a first motor-generator 3 approaches zero from the current speed by changing shift stages of an automatic transmission 10 at current output power of the drive shaft 23, with a shift stage, with which the direct transmission ratio falls within a permissible range of vibration caused by the internal combustion engine 2, existing as a candidate, a control apparatus applied to a hybrid vehicle 1 controls an automatic transmission 10 so that the shift stage is changed to the candidate.SELECTED DRAWING: Figure 1 |
