Driving control method for hybrid vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorMin Seok Song
Life of this patent
Estimating the term…
Abstract
A driving control method for a hybrid vehicle is capable of improving fuel efficiency of the hybrid vehicle and increasing acceleration/deceleration responsiveness of the vehicle according to a demand of a driver by more appropriately selecting a point of time at which an engine is turned on/off in the hybrid vehicle in response to a driving situation, and controlling driving of the engine and a motor accordingly.
Claims8
A driving control method for a hybrid vehicle, the driving control method comprising:
- an expected velocity calculation step of calculating, by a controller, an expected velocity of a corresponding vehicle based on a driver average vehicle velocity, which is an average vehicle velocity of a vehicle which is being driven and a road average vehicle velocity, which is an average vehicle velocity of a road on which the vehicle is being driven;
- a driving situation determination step of determining, by the controller, whether or not the vehicle is in a transition driving situation or a steady driving situation based on a current velocity of the vehicle and the expected velocity;
- a reference value correction step of correcting, by the controller, a basic engine-on reference value which is set to turn on an engine and a basic engine-off reference value which is set to turn off the engine according to a required power of a driver to a corrected engine-on reference value and a corrected engine-off reference value in consideration of the expected velocity and the current velocity, respectively, when it is determined that the vehicle is in the steady driving situation as a result of performing the driving situation determination step;
- and
- an engine-on/off step of turning on, by the controller, the engine when the required power of the driver is increased and reaches the corrected engine-on reference value during driving of the vehicle and turning off, by the controller, the engine when the required power of the driver is decreased and reaches the corrected engine-off reference value during the driving of the vehicle.
A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
- program instructions that calculate an expected velocity of a corresponding vehicle based on a driver average vehicle velocity, which is an average vehicle velocity of a vehicle which is being driven and a road average vehicle velocity, which is an average vehicle velocity of a road on which the vehicle is being driven;
- program instructions that determine whether or not the vehicle is in a transition driving situation or a steady driving situation based on a current velocity of the vehicle and the expected velocity;
- program instructions that correct a basic engine-on reference value which is set to turn on an engine and a basic engine-off reference value which is set to turn off the engine according to a required power of a driver to a corrected engine-on reference value and a corrected engine-off reference value in consideration of the expected velocity and the current velocity, respectively, when it is determined that the vehicle is in the steady driving situation as a result of performing the driving situation determination step;
- and
- program instructions that turn on the engine when the required power of the driver is increased and reaches the corrected engine-on reference value during driving of the vehicle and turn off the engine when the required power of the driver is decreased and reaches the corrected engine-off reference value during the driving of the vehicle.
Dependencies are inferred from the claim text.