CONTROL APPARATUS FOR HYBRID VEHICLE AND METHOD FOR AVOIDING MUFFLED NOISE

摘要

An muffled noise generation region is set in advance as a region in which muffled noise caused by driving of the motor generates. An hysteresis region is sets between a start line (Lb) and a stop line (Lc, Ld) outside the muffled noise generation region. An electronic control unit starts to change an engine operating point and a motor operating point such that the motor operating point is distanced from the muffled noise generation region when the motor operating point has reached the start line. The electronic control unit sets at least one of the start line (Lb) and the stop line (Lc, Ld) such that at least one of the start line (Lb) and the stop line (Lc, Ld) when an engine output keeping control is being implemented to keep an engine output at a predetermined value, is closer to the muffled noise generation region than that when the engine output keeping control is not being implemented.