Control apparatus for hybrid vehicle, hybrid vehicle, and control method for hybrid vehicle

A hybrid vehicle comprising:

• a pair of front wheels;
• a pair of rear wheels;
• an engine and a first motor configured to output a first driving force to one pair of wheels out of the pair of front wheels and the pair of rear wheels;
• a second motor configured to output a second driving force to the other pair of wheels out of the pair of front wheels and the pair of rear wheels;
• a battery configured to supply electric power to the first motor and the second motor;
• and
• a mode selector switch configured to switch between a charge depleting mode and a charge sustaining mode;
• and
• an electronic control unit configured to
• control the engine, the first motor, and the second motor such that the hybrid vehicle travels with requested driving force requested for traveling of the hybrid vehicle, and
• execute control such that a first driving force ratio becomes larger than a second driving force ratio when the hybrid vehicle travels in the charge depleting mode, the first driving force ratio being a ratio of the second driving force to the requested driving force when the hybrid vehicle travels in the charge depleting mode, the second driving force ratio being a ratio of the second driving force to the requested driving force when the hybrid vehicle travels in the charge sustaining mode switched from the charge depleting mode by the mode selector switch.

A control method for a hybrid vehicle, the hybrid vehicle including

• a pair of front wheels,
• a pair of rear wheels,
• an engine and a first motor configured to output a first driving force to one pair of wheels out of the pair of front wheels and the pair of rear wheels,
• a second motor configured to output a second driving force to the other pair of wheels out of the pair of front wheels and the pair of rear wheels,
• a battery configured to supply electric power to the first motor and the second motor, and
• a mode selector switch configured to switch between a charge depleting mode and a charge sustaining mode, and
• an electronic control unit,
• the control method comprising:
• controlling, by the electronic control unit, the engine, the first motor, and the second motor such that the hybrid vehicle travels with requested driving force requested for traveling of the hybrid vehicle;
• and
• executing, by the electronic control unit, control such that a first driving force ratio becomes larger than a second driving force ratio when the hybrid vehicle travels in the charge depleting mode, the first driving force ratio being a ratio of the second driving force to the requested driving force when the hybrid vehicle travels in the charge depleting mode, the second driving force ratio being a ratio of the second driving force to the requested driving force when the hybrid vehicle travels in the charge sustaining mode switched from the charge depleting mode by the mode selector switch.