START CONTROL APPARATUS AND METHOD FOR A HYBRID ELECTRIC VEHICLE
First Claim
1. A start control apparatus of a hybrid electric vehicle including an engine, a motor, and a transmission, the start control apparatus comprising:
- an operation information detector for detecting vehicle state information and environmental information of a travel region of the vehicle;
a battery manager for detecting voltages, currents, and temperatures of respective cells constituting a battery and for managing a state of charge (SOC) of the battery; and
a controller for analyzing the vehicle state information and the environmental information detected by the operation information detector, and the SOC of the battery detected by the battery manager, and for executing start control by selectively shifting a gearshift of the transmission to a first gear ratio or a second gear ratio when the vehicle stops and then starts.
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Accused Products
Abstract
Disclosed is a start control apparatus and method for a hybrid electric vehicle which provides starting of a second gear ratio or a first ratio based on an inclination of a road surface, a travel environment, and a state of the vehicle when the hybrid electric vehicle stops and then starts. The method includes: determining a state of the hybrid electric vehicle, a travel environment condition, and a state of charge (SOC) of a battery when a start request is detected in a stopped state while the vehicle maintains ignition on; determining whether the state of the hybrid electric vehicle, the travel environment condition, and the SOC of the battery satisfy start conditions of a second gear ratio; and when the start conditions are satisfied, controlling output torques of a motor and an engine corresponding to a torque requested from an accelerator pedal in an EV mode or an HEV mode.
25 Citations
17 Claims
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1. A start control apparatus of a hybrid electric vehicle including an engine, a motor, and a transmission, the start control apparatus comprising:
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an operation information detector for detecting vehicle state information and environmental information of a travel region of the vehicle; a battery manager for detecting voltages, currents, and temperatures of respective cells constituting a battery and for managing a state of charge (SOC) of the battery; and a controller for analyzing the vehicle state information and the environmental information detected by the operation information detector, and the SOC of the battery detected by the battery manager, and for executing start control by selectively shifting a gearshift of the transmission to a first gear ratio or a second gear ratio when the vehicle stops and then starts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling start of a hybrid electric vehicle executed by a processor within a controller, the method comprising:
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when the hybrid electric vehicle is in a stopped state while maintaining ignition on and a start request is detected, determining a state of the hybrid electric vehicle, a travel environment condition, and a state of charge (SOC) of a battery; determining whether the state of the hybrid electric vehicle, the travel environment condition, and the SOC of the battery satisfy predetermined start conditions of a second gear ratio; and when the state of the hybrid electric vehicle, the travel environment condition, and the SOC of the battery satisfy the predetermined start conditions of the second gear ratio, controlling output torques of a motor and an engine corresponding to a torque requested from an accelerator pedal in an EV mode or an HEV mode. - View Dependent Claims (10, 11, 12)
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13. A method of controlling start of a hybrid electric vehicle executed by a processor within a controller, the method comprising:
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when the hybrid electric vehicle is in a stopped state while maintaining ignition on, when a neutral to drive shift is detected, detecting an inclination of a road surface, a temperature of an outside air of the vehicle, and a state of charge (SOC) of a battery; determining whether the inclination, the temperature of air outside the vehicle, and the SOC of the battery satisfy predetermined start conditions of a second gear ratio when the neutral to drive shift is detected in a stopped state while maintaining ignition; and controlling start of the vehicle so that a gearshift of a transmission is shifted to the second gear ratio when the inclination, the temperature of the air outside the vehicle, and the SOC of the battery satisfy the start condition of the second gear ratio. - View Dependent Claims (14, 15, 16)
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17. A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
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program instructions that determine a state of the hybrid electric vehicle, a travel environment condition, and a state of charge (SOC) of a battery of the hybrid electric vehicle; program instructions that determine whether the state of the hybrid electric vehicle, the travel environment condition, and the SOC of the battery satisfy predetermined start conditions of a second gear ratio; and program instructions that control output torques of a motor and an engine corresponding to a torque requested from an accelerator pedal in an EV mode or an HEV mode when the predetermined start conditions are satisfied.
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Specification