Back to results
US 11,654,882 B2Granted
Device for controlling driving of an electric four-wheel drive vehicle at the time of shift
AssigneesHyundai Motor Company, Kia Corporation
InventorJee Wook Huh
Life of this patent
Estimating the term…
Abstract
A device for controlling driving of an electric four-wheel drive vehicle at the time of shift is provided. The device controls driving of an electric four-wheel drive vehicle to minimize energy loss occurring on a power transmission path during shift, thereby improving fuel efficiency.
Claims18
A device for controlling driving of an electric four-wheel drive vehicle at the time of shift, comprising:
- a front wheel powertrain including an engine, a front wheel motor, and a transmission configured to shift powers of the engine and the front wheel motor and to output the shifted powers to front wheels;
- a rear wheel powertrain including a rear wheel motor and a decelerator configured to decelerate power of the rear wheel motor and to output the decelerated power to rear wheels;
- and
- a controller configured to,
- when shift of the transmission starts during traveling through driving of the engine,
- command the rear wheel motor to output a portion of driver demand power corresponding to power capable of being output by the rear wheel motor;
- and
- command the front wheel motor to output power obtained by subtracting the output power commanded to the rear wheel motor and engine output power from the driver demand power;
- and
- in response to determining that a sum of maximum power capable of being output by the front wheel motor and maximum power capable of being output by the rear wheel motor is less than the driver demand power, drive the engine and command the engine to output power determined according to an operating line map.
7 more elements
A device for controlling driving of electric four-wheel drive vehicle at the time of shift, comprising:
- a front wheel powertrain including an engine and a transmission configured to shift power of the engine and to output the shifted power to front wheels;
- a rear wheel powertrain including a rear wheel motor and a decelerator configured to decelerate power of the rear wheel motor and to output the decelerated power to rear wheels;
- and
- a controller configured to,
- when shift of the transmission starts during traveling through driving of the engine,
- command the rear wheel motor to output a portion of driver demand power corresponding to power capable of being output by the rear wheel motor;
- and
- command the engine to output power obtained by subtracting the rear wheel motor output power from the driver demand power;
- and
- in response to determining that maximum power capable of being output by the rear wheel motor is equal to or greater than the driver demand power at the time of shift, command the rear wheel motor to output the driver demand power and stop the engine.
7 more elements
A device for controlling driving of an electric four-wheel drive vehicle at the time of shift, comprising:
- a front wheel powertrain including an engine, a front wheel motor, and a transmission configured to shift powers of the engine and the front wheel motor and to output the shifted powers to front wheels;
- a rear wheel powertrain including a rear wheel motor and a decelerator configured to decelerate power of the rear wheel motor and to output the decelerated power to rear wheels;
- and
- a controller configured to,
- when shift of the transmission starts during traveling through driving of the engine,
- command the rear wheel motor to output a portion of driver demand power corresponding to power capable of being output by the rear wheel motor;
- and
- command the front wheel motor to output power obtained by subtracting the output power commanded to the rear wheel motor and engine output power from the driver demand power;
- when shift of the transmission starts during traveling using only the power of the front wheel motor, command the rear wheel motor to output the portion of the driver demand power corresponding to the power capable of being output by the rear wheel motor and command the front wheel motor to output power obtained by subtracting the rear wheel motor output power from the driver demand power;
- and
- in response to determining that the maximum rear wheel motor power is equal to or greater than the driver demand power at the time of shift, command the rear wheel motor to output the driver demand power.
8 more elements
Dependencies are inferred from the claim text.