CONTROLLER FOR SWITCHING MODE OF HYBRID VEHICLE

PROBLEM TO BE SOLVED: To extend electric vehicle (EV) running time according to acceleration intention by correcting an accelerator opening as a control factor without depending on expansion of an electric vehicle (EV) mode region. SOLUTION: In S16, it is checked whether the accelerator opening speed APO is less than a set speed APOa (a weak acceleration intention I) or at a standard or strong acceleration intention II or III of APO≥ APOa. In case of I, in S17, a driving force is controlled based on a control input accelerator opening cAPO with smaller delay opening property for an actual accelerator opening APO, and in S18, it is checked whether cAPO is less than a set basic accelerator opening APOa (accelerator operation type I-2) or larger than the same (accelerator operation type I-1). In case of I-1, in S19, HEV running is performed by a mode switch control based on comparison of the smaller cAPO and APOa, and in case of I-2, in S2, EV running is performed by a mode switch based on comparison of the smaller cAPO and APOa. Accordingly, in case of the weak acceleration intention I, mode is switched equivalently to expansion of the EV region, and the EV running can be expanded according to the weak acceleration intention along with the driving force control based on the smaller cAPO at S17. COPYRIGHT: (C)2008,JPO&INPIT