Hybrid vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShunya Kato, Masaya Sugai
Life of this patent
Estimating the term…
Abstract
A drivability target engine speed is set based on a shift stage based on an accelerator opening level and a vehicle speed and the vehicle speed, and a base driving force is set based on an accelerator required driving force and the drivability target engine speed. When an elapsed time after an accelerator depression amount increases is less than a threshold value, a correction driving force is set based on an increase in accelerator depression amount and an engine, a first motor, and a second motor are controlled such that an effective driving force obtained by adding the correction driving force to the base driving force is output to a drive shaft for a hybrid vehicle to travel.
Claims10
A hybrid vehicle including an accelerator pedal operable by a driver, the hybrid vehicle comprising:
- an engine;
- a first motor;
- a planetary gear mechanism in which three rotary elements of the planetary gear mechanism are connected to an output shaft of the engine, a rotary shaft of the first motor, and a drive shaft connected to an axle of the hybrid vehicle, respectively;
- a second motor configured to input and output power to and from the drive shaft;
- a battery configured to exchange electric power with the first motor and the second motor;
- and
- an electronic control unit configured to
- (i) set a shift stage based on an accelerator depression amount and a vehicle speed of the hybrid vehicle, or an operation of the driver,
- (ii) set a target rotation speed of the engine based on the shift stage and the vehicle speed,
- (iii) set a base driving force based on the accelerator depression amount, the vehicle speed, and the target rotation speed,
- (iv) set a correction driving force such that the correction driving force increases with an increase in the accelerator depression amount, and
- (v) control the engine, the first motor, and the second motor such that a driving force obtained by adding the correction driving force to the base driving force is output to the drive shaft for the hybrid vehicle to travel.
Dependencies are inferred from the claim text.