摘要 |
<P>PROBLEM TO BE SOLVED: To improve fuel cost of a hybrid vehicle having an engine and a generator motor as a driving source. <P>SOLUTION: Concerning a transmission gear ratio determined based on transmission gear ratio information from a transmission control unit, a plurality of candidates of a power generation torque of the generator motor and a plurality of candidates of an assist torque are calculated, and each combination candidate on a driving pattern between a plurality of engine output torque candidates and the plurality of power generation torque candidates and on a driving pattern between the plurality of engine output torque candidates and the plurality of assist torque candidates is operated, relative to the determined transmission gear ratio, and a fuel consumption equivalent amount is calculated in each combination candidate of the driving patterns, and a driving pattern wherein the fuel consumption equivalent amount becomes minimum is determined, to thereby always drive the vehicle with the best fuel cost. <P>COPYRIGHT: (C)2008,JPO&INPIT |