A hybrid vehicle includes a controller configured to control an engine and an electric motor in one of a plurality of control modes. The controller is configured to execute a switching control to switch the control mode in accordance with a traveling plan. The controller is configured to report at least one of first information and second information using a report device, the first information indicating that the switching control is capable of being executed, the second information indicating that the switching control is not executed. The controller is configured to report third information using the report device in a case where the first information is reported by the report device, the third information being relevant to the switching control, and not to report the third information in a case where the second information is reported by the report device.

A hybrid vehicle includes a controller configured to control an engine and an electric motor in one of a plurality of control modes. The controller is configured to execute a switching control to switch the control mode in accordance with a traveling plan. The controller is configured to report at least one of first information and second information using a report device, the first information indicating that the switching control is capable of being executed, the second information indicating that the switching control is not executed. The controller is configured to report third information using the report device in a case where the first information is reported by the report device, the third information being relevant to the switching control, and not to report the third information in a case where the second information is reported by the report device.

A first electric power generation device configured to produce an accessory voltage according to a first instruction voltage. A second electric power generation device configured to produce the accessory voltage according to a second instruction. An electric control unit is configured to execute crank position stop control for stopping a crank of the engine at a target position when the engine is stopped by controlling the first electric power generation device such that a current is circulated in the first electric power generation device and the rotating electric machine generates braking torque. The electric control unit is configured to execute the crank position stop control in a state in which the second instruction voltage is equal to or higher than the first instruction voltage.

An electronic control unit stores a vehicle load at the time when the vehicle is switched into an ignition off state, stops operation of an electric oil pump when the vehicle load is small, and operates the electric oil pump when the vehicle load is large. Thus, a decrease in service life due to an increase in the number of times of the start of the electric oil pump is suppressed, and, when it is estimated that the vehicle load is large, the response of the start of a vehicle, which makes a driver experience a feeling of strangeness, is improved by starting the electric oil pump together with switching the vehicle into an ignition on state.

A power distribution management method includes receiving accelerator pedal opening information sent by a hybrid vehicle; on the basis of the accelerator pedal opening information, respectively compiling statistics on a first opening change rate when the accelerator pedal opening is in a starting interval and when the accelerator pedal opening is increased and a second opening change rate when the accelerator pedal opening is in an overtaking interval and when the accelerator pedal opening is increased, the starting interval corresponding to a first preset range of the accelerator pedal opening, and the overtaking interval corresponding to a second preset range of the accelerator pedal opening; calculating a driver feature coefficient on the basis of the first opening change rate and the second opening change rate; and sending the driver feature coefficient to the hybrid vehicle.

A power distribution management method includes receiving accelerator pedal opening information sent by a hybrid vehicle; on the basis of the accelerator pedal opening information, respectively compiling statistics on a first opening change rate when the accelerator pedal opening is in a starting interval and when the accelerator pedal opening is increased and a second opening change rate when the accelerator pedal opening is in an overtaking interval and when the accelerator pedal opening is increased, the starting interval corresponding to a first preset range of the accelerator pedal opening, and the overtaking interval corresponding to a second preset range of the accelerator pedal opening; calculating a driver feature coefficient on the basis of the first opening change rate and the second opening change rate; and sending the driver feature coefficient to the hybrid vehicle.

A hybrid electric vehicle includes an engine, a motor, a clutch provided between the engine and the motor, a battery for charging regenerative electric power of the motor, and a control device that controls the engine, the motor, and the clutch. The control device includes a charge determination unit that determines whether the battery is chargeable when there is a deceleration request, and a deceleration control unit that executes, in a negative determination, a first deceleration process to decelerate the hybrid electric vehicle by friction torque of the engine, and executes, in a positive determination, a second deceleration process to decelerate the hybrid electric vehicle by regenerative torque of the motor. In the second deceleration process, the deceleration control unit causes the motor to output the friction torque at a rotational speed of the engine corresponding to a rotational speed of the motor as the regenerative torque.

A hybrid electric vehicle includes an engine, a motor, a clutch provided between the engine and the motor, a battery for charging regenerative electric power of the motor, and a control device that controls the engine, the motor, and the clutch. The control device includes a charge determination unit that determines whether the battery is chargeable when there is a deceleration request, and a deceleration control unit that executes, in a negative determination, a first deceleration process to decelerate the hybrid electric vehicle by friction torque of the engine, and executes, in a positive determination, a second deceleration process to decelerate the hybrid electric vehicle by regenerative torque of the motor. In the second deceleration process, the deceleration control unit causes the motor to output the friction torque at a rotational speed of the engine corresponding to a rotational speed of the motor as the regenerative torque.

A control device of a hybrid vehicle includes a pressing torque applying portion configured to control the first rotating machine to output a pressing torque acting in a predetermined backlash elimination direction in backlash elimination in which one of tooth surfaces of meshing gears is pressed against the other at a meshing portion during motor running, so that the pressing torque is applied on the electric transmission mechanism. When an electrical angle of the first rotating machine is within a predetermined electrical angle range in which a cogging torque of the first rotating machine generated in accordance with rotation of the first rotating machine is equal to or greater than a predetermined torque required for the backlash elimination in the predetermined backlash elimination direction, the pressing torque applying portion makes the pressing torque smaller as compared to when the electrical angle is outside the predetermined electrical angle range.

A cruise control method for a hybrid vehicle is provided. The method includes detecting a preceding vehicle and estimating the speed of the preceding vehicle from the information input from a preceding vehicle detecting unit in the on state of a cruise mode and a PnG mode. An upper limit target vehicle speed and a lower limit target vehicle speed are determined from the estimated speed of the preceding vehicle. The driving source of the vehicle is operated to alternately repeat the acceleration (pulse phase) and deceleration (glide phase) of the vehicle between the determined upper limit target vehicle speed and lower limit target vehicle speed.