Vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHirotatsu Kitabatake
Life of this patent
Estimating the term…
Abstract
The vehicle includes a first motor that applies a driving force to the first wheel via the first speed reducer, a second motor that applies a driving force to the second wheel via the second speed reducer, and a control device that controls the driving force of the first motor and the driving force of the second motor. A maximum driving force that is outputtable by the first motor is greater than a maximum driving force that is outputtable by the second motor. When a temperature parameter correlated with a temperature of the first speed reducer and a temperature of the second speed reducer is lower than a predetermined temperature, the control device drives the second motor with priority over the first motor.
Claims4
A vehicle, comprising:
- a first motor configured to apply driving force to a first wheel via a first speed reducer;
- a second motor configured to apply driving force to a second wheel via a second speed reducer;
- and
- a control device configured to
- control the driving force of the first motor and the driving force of the second motor, wherein a maximum driving force of the first motor is greater than a maximum driving force of the second motor,
- drive the second motor with priority over the first motor in a case where a temperature parameter correlated with a temperature of the first speed reducer and a temperature of the second speed reducer is lower than a predetermined temperature,
- determine whether a first condition is satisfied in a case where requested driving force requested to the vehicle is generated by the first motor and the second motor, wherein the first condition is satisfied in a case where the temperature parameter is lower than the predetermined temperature, and the requested driving force is no greater than the maximum driving force of the second motor,
- stop the first motor and generate the requested driving force by the second motor in a case where a determination is made that the first condition is satisfied,
- determine whether a second condition is satisfied in a case where a determination is made that the first condition is not satisfied, wherein the second condition is satisfied in a case where the temperature parameter is lower than the predetermined temperature, and the requested driving force is greater than the maximum driving force of the second motor and no greater than the maximum driving force of the first motor,
- stop the second motor and generate the requested driving force by the first motor in a case where a determination is made that the second condition is satisfied, and
- in a case where the second motor is driven with priority over the first motor and the first motor is in a stopped state,
- determine whether the temperature parameter is higher than a second predetermined temperature and whether the requested driving force is larger than a predetermined value that is less than the maximum driving force of the second motor, and
- place both the first motor and the second motor in a running state in a case where determinations are made that the temperature parameter is higher than the second predetermined temperature and that the requested driving force is larger than the predetermined value.
Dependencies are inferred from the claim text.