Apparatus and method for controlling torque reduction of hybrid electric vehicle
First Claim
1. A method for controlling torque reduction of a hybrid electric vehicle including a motor and an engine as a power source, comprising:
- determining whether a traction control system (TCS) is operating;
calculating a demand torque of the TCS when the TCS is operating;
determining an engine operating point according to the demand torque of the TCS as a value to maintain a state of charge (SOC) of a battery of the vehicle while the TCS is operating;
maintaining an engine torque according to the engine operating point;
comparing a difference between the demand torque of the TCS and the engine torque according to the engine operating point with a charging limit torque of the motor; and
performing torque reduction using a motor torque and the engine torque based on a result of the comparison.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for controlling torque reduction of a hybrid electric vehicle including a motor and an engine as a power source includes: determining whether a traction control system (TCS) is operating; calculating a demand torque of the TCS when the TCS is operating; determining an engine operating point according to the demand torque of the TCS; maintaining an engine torque according to the engine operating point; comparing a difference between the demand torque of the TCS and the engine torque according to the engine operating point with a charging limit torque of the motor; and performing torque reduction using a motor torque and the engine torque based on a result of the comparison.
8 Citations
11 Claims
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1. A method for controlling torque reduction of a hybrid electric vehicle including a motor and an engine as a power source, comprising:
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determining whether a traction control system (TCS) is operating; calculating a demand torque of the TCS when the TCS is operating; determining an engine operating point according to the demand torque of the TCS as a value to maintain a state of charge (SOC) of a battery of the vehicle while the TCS is operating; maintaining an engine torque according to the engine operating point; comparing a difference between the demand torque of the TCS and the engine torque according to the engine operating point with a charging limit torque of the motor; and performing torque reduction using a motor torque and the engine torque based on a result of the comparison. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for controlling torque reduction of a hybrid electric vehicle including a motor and an engine as a power source, comprising:
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a driving information detector detecting a running state of the vehicle and demand information of a driver of the vehicle; a traction control system (TCS) preventing a wheel slip of the vehicle; and a controller controlling an output torque of the engine and the motor based on a signal from the driving information detector determining an engine operating point according to a demand torque of the TCS to maintain a state of charge (SOC) of a battery of the vehicle when the TCS is operating, maintaining an engine torque according to the engine operating point, comparing a difference between the demand torque of the TCS and the engine torque according to the engine operating point with a charging limit torque of the motor, and performing torque reduction using a motor torque and the engine torque based on a result of the comparison. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer readable medium containing program instructions for controlling torque reduction of a hybrid electric vehicle including a motor and an engine as a power source, the computer readable medium comprising:
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program instructions that determine whether a traction control system (TCS) is operating; program instructions that calculate a demand torque of the TCS when the TCS is operating; program instructions that determine an engine operating point according to the demand torque of the TCS as a value to maintain a state of charge (SOC) of a battery of the vehicle while the TCS is operating; program instructions that maintain an engine torque according to the engine operating point; program instructions that compare a difference between the demand torque of the TCS and the engine torque according to the engine operating point with a charging limit torque of the motor; and program instructions that perform torque reduction using a motor torque and the engine torque based on a result of the comparison.
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Specification