Hybrid electric vehicle and a driving control method therefor
AssigneesHyundai Motor Company, Kia Corporation
InventorJee Wook Huh
Life of this patent
Estimating the term…
Abstract
A hybrid electric vehicle and a driving control method therefor are disclosed. The hybrid electric vehicle includes an engine clutch connected at one end of the engine clutch to a first motor, which is directly connected to an engine, and connected at the other end of the engine clutch to a second motor. The hybrid electric vehicle also includes a battery electrically connected to the first motor and the second motor. The hybrid electric vehicle also includes a controller configured to determine an operating point of the second motor, an operating point of the engine, and an operating point of the first motor.
Claims4
A hybrid electric vehicle comprising:
- an engine clutch connected at one end of the engine clutch to a first motor and connected at another end of the engine clutch to a second motor, the first motor being directly connected to an engine;
- a battery electrically connected to the first motor and the second motor;
- and
- a controller configured, when supply of fuel to the engine is interrupted in an engaged state of the engine clutch, to:
- determine total motor torque to be output by a motor unit comprising the first motor and the second motor based on torque of the engine according to interruption of supply of fuel to the engine and requested deceleration torque, and
- determine, based on output efficiency of each of the first motor and the second motor, an operating point of each of the first motor and the second motor such that total motor applied torque causing the motor unit to output the total motor torque is equal to or greater than a predetermined value.
A method of controlling driving of a hybrid electric vehicle, the method comprising:
- controlling engagement and disengagement of an engine clutch and driving of an engine based on whether a predetermined condition is satisfied, wherein the engine clutch is connected at one end of the engine clutch to a first motor and connected at another end of the engine clutch to a second motor, and the first motor is directly connected to the engine;
- when the engine is driven in a disengaged state of the engine clutch, determining an operating point of the second motor based on requested driving power, an operating point of the engine based on output efficiency of each of the engine and the first motor and charging efficiency of a battery, and an operating point of the first motor based on an amount of discharge of the battery according to output of the second motor and torque of the engine according to the operating point of the engine;
- and
- when the engine is driven in an engaged state of the engine clutch, determining an operating point of the engine based on a predetermined efficiency map, total motor torque to be output by a motor unit comprising the first motor and the second motor based on the operating point of the engine, and an operating point of each of the first motor and the second motor based on total motor applied torque causing the motor unit to output the total motor torque and whether the battery is charged or discharged.
Dependencies are inferred from the claim text.