AUTO CRUISE CONTROL AND SYSTEM FOR HYBRID ELECTRIC VEHICLES
First Claim
1. An auto cruise control method for a hybrid electric vehicle, comprising:
- turning on, by a controller, an auto cruise control mode in response to receiving a user input of a target vehicle speed in the hybrid electric vehicle using an engine and a driving motor as vehicle driving sources, and turning on a pulse and glide (PnG) mode;
providing, by the controller, a user interface (UI) device to allow user selection of any one of a PnG coast mode, a PnG glide mode and a PnG constant-speed cruise mode; and
operating, by the controller, the hybrid vehicle in a selected mode based on user selected through the UI device,wherein in the PnG coast mode, a pulse phase that corresponds a vehicle acceleration section and a coast phase that corresponds to a vehicle deceleration section are alternately repeated between set upper and lower limit target vehicle speeds, and coasting of the hybrid electric vehicle by inertia of the hybrid electric vehicle is performed in the coast phase,wherein in the PnG glide mode, the pulse phase that corresponds a vehicle acceleration section and a glide phase that corresponds to a vehicle deceleration section are alternately repeated between the set upper and lower limit target vehicle speeds, and deceleration driving of the hybrid electric vehicle based on a speed profile, set by inertia of the hybrid electric vehicle and torque assistance of the driving motor, is performed in the glide phase, andwherein in the PnG constant-speed cruise mode, the controller is configured to maintain the target vehicle speed using the vehicle driving sources.
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Accused Products
Abstract
An auto cruise control method and system for hybrid electric vehicles are provided. Particularly, a PnG driving pattern in consideration of characteristics of hybrid electric vehicles is applied to maximize improvement in fuel efficiency and to satisfy both drivability and improvement in fuel efficiency. The auto cruise control method includes turning on an auto cruise control mode by receiving a user set target vehicle speed using an engine and a driving motor as vehicle driving sources, and turning on a pulse and glide (PnG) mode. A user interface (UI) device is provided to receive a selection of any one of a PnG coast mode, a PnG glide mode and a PnG constant-speed cruise mode, and, when the driver selects one mode through the UI device, the hybrid electric vehicle is operated in the selected mode.
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Citations
15 Claims
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1. An auto cruise control method for a hybrid electric vehicle, comprising:
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turning on, by a controller, an auto cruise control mode in response to receiving a user input of a target vehicle speed in the hybrid electric vehicle using an engine and a driving motor as vehicle driving sources, and turning on a pulse and glide (PnG) mode; providing, by the controller, a user interface (UI) device to allow user selection of any one of a PnG coast mode, a PnG glide mode and a PnG constant-speed cruise mode; and operating, by the controller, the hybrid vehicle in a selected mode based on user selected through the UI device, wherein in the PnG coast mode, a pulse phase that corresponds a vehicle acceleration section and a coast phase that corresponds to a vehicle deceleration section are alternately repeated between set upper and lower limit target vehicle speeds, and coasting of the hybrid electric vehicle by inertia of the hybrid electric vehicle is performed in the coast phase, wherein in the PnG glide mode, the pulse phase that corresponds a vehicle acceleration section and a glide phase that corresponds to a vehicle deceleration section are alternately repeated between the set upper and lower limit target vehicle speeds, and deceleration driving of the hybrid electric vehicle based on a speed profile, set by inertia of the hybrid electric vehicle and torque assistance of the driving motor, is performed in the glide phase, and wherein in the PnG constant-speed cruise mode, the controller is configured to maintain the target vehicle speed using the vehicle driving sources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An auto cruise control system for a hybrid electric vehicle, comprising:
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a memory configured to store program instructions; and a processor configured to execute the program instructions, the program instructions when executed configured to; turn on an auto cruise control mode in response to receiving a user input of a target vehicle speed in the hybrid electric vehicle using an engine and a driving motor as vehicle driving sources, and turning on a pulse and glide (PnG) mode; provide a user interface (UI) device to allow user selection of any one of a PnG coast mode, a PnG glide mode and a PnG constant-speed cruise mode; and operate the hybrid vehicle in a selected mode based on user selected through the UI device, wherein in the PnG coast mode, a pulse phase that corresponds a vehicle acceleration section and a coast phase that corresponds to a vehicle deceleration section are alternately repeated between set upper and lower limit target vehicle speeds, and coasting of the hybrid electric vehicle by inertia of the hybrid electric vehicle is performed in the coast phase, wherein in the PnG glide mode, the pulse phase that corresponds a vehicle acceleration section and a glide phase that corresponds to a vehicle deceleration section are alternately repeated between the set upper and lower limit target vehicle speeds, and deceleration driving of the hybrid electric vehicle based on a speed profile, set by inertia of the hybrid electric vehicle and torque assistance of the driving motor, is performed in the glide phase, and wherein in the PnG constant-speed cruise mode, the target vehicle speed is maintained using the vehicle driving sources.
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Specification