Vehicle control system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYukari OKAMURA
Life of this patent
Estimating the term…
Abstract
A vehicle control system configured to achieve a required drive force and a required brake force in the process of shifting the operating mode. A first ratio is defined as a ratio of: an electric power exchanged between the first motor and a battery; to a power of a first motor to shift an operating mode. A second ratio is defined as a ratio of: an electric power exchanged between the second motor and the battery; to a power of a second motor to achieve a required power to drive or decelerate the vehicle. The first ratio is reduced smaller than the second ratio when a condition to shift the operating mode from a disconnecting mode to another mode.
Claims7
A vehicle control system that is applied to a vehicle comprising:
- a first motor;
- an engagement device that selectively interrupt torque transmission between the first motor and a pair of drive wheels;
- a second motor that is connected to the pair of drive wheels or another pair of drive wheels;
- and
- an electric storage device that is electrically connected with the first motor and the second motor,
- wherein an operating mode is shifted from a first mode to a second mode while disengaging the engagement device to interrupt the torque transmission between the first motor and the pair of drive wheels, and while changing a speed of the first motor,
- the control system comprising a controller that controls the first motor and the second motor,
- a first ratio is defined as a ratio of:
- an electric power exchanged between the first motor and the electric storage device;
- to a power of the first motor to shift the operating mode,
- a second ratio is defined as a ratio of:
- an electric power exchanged between the second motor and the electric storage device;
- to a power of the second motor to achieve a required power to drive or decelerate the vehicle, and
- the controller is configured to reduce the first ratio smaller than the second ratio when a condition to shift the operating mode from the first mode to the second mode is satisfied.
Dependencies are inferred from the claim text.