Apparatus and method for controlling driving of hybrid electric vehicle on slope
First Claim
1. An apparatus for controlling driving of a hybrid electric vehicle on a slope, comprising:
- an acceleration position sensor to detect a position of an accelerator pedal and output the position as an electric signal;
a brake pedal sensor to detect operation of the break pedal and output the operation as an electric signal;
a slope degree sensor to detect a slope degree and output the slope degree as an electric sensor;
an SOC sensor to detect an SOC of a battery and output the SOC as an electric signal;
a hybrid electric vehicle control unit to receive the electric signals input from the acceleration position sensor, the brake pedal sensor, the slope degree sensor, and the SOC sensor, and to output control signals thereto; and
a driving unit to drive an engine, a generator, and an electric motor, wherein, when the hybrid electric vehicle travels on a slope, the hybrid electric vehicle control unit selects one driving mode among an engine-motor combined driving mode, an engine driving mode, and a motor driving mode by using the electric signals input from the slope degree sensor and the SOC sensor, and controls the driving unit with the selected mode.
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Accused Products
Abstract
An apparatus and a method for controlling driving of a hybrid electric vehicle on a slope are disclosed. With the apparatus and the method, the hybrid electric vehicle travels on the slope in one mode selected from an engine-motor combined driving mode, an engine driving mode, and a motor driving mode according to an SOC of the battery and a degree of the slope. Accordingly, when traveling on the slope, a driving mode can be determined according to the degree of the slope and the SOC of the battery, thereby previously preventing motor torque from being abruptly increased while traveling on the slope. As a result, a travel distance of the electric motor can be increased, and the start of the internal combustion engine is minimized, thereby enhancing the fuel efficiency by reducing the fuel consumption.
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Citations
8 Claims
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1. An apparatus for controlling driving of a hybrid electric vehicle on a slope, comprising:
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an acceleration position sensor to detect a position of an accelerator pedal and output the position as an electric signal;
a brake pedal sensor to detect operation of the break pedal and output the operation as an electric signal;
a slope degree sensor to detect a slope degree and output the slope degree as an electric sensor;
an SOC sensor to detect an SOC of a battery and output the SOC as an electric signal;
a hybrid electric vehicle control unit to receive the electric signals input from the acceleration position sensor, the brake pedal sensor, the slope degree sensor, and the SOC sensor, and to output control signals thereto; and
a driving unit to drive an engine, a generator, and an electric motor, wherein, when the hybrid electric vehicle travels on a slope, the hybrid electric vehicle control unit selects one driving mode among an engine-motor combined driving mode, an engine driving mode, and a motor driving mode by using the electric signals input from the slope degree sensor and the SOC sensor, and controls the driving unit with the selected mode. - View Dependent Claims (2, 3, 4)
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5. A method for controlling driving of a hybrid electric vehicle on a slope is provided, the method comprising the steps of:
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determining whether or not the hybrid electric vehicle travels on a slope of a preset slope degree or more by using a signal input from a slope degree sensor;
detecting an SOC of a battery by using a signal input from an SOC sensor, and a degree of the slope by using a signal input from the slope degree sensor if it is determined that the hybrid electric vehicle travels on the slope; and
selecting one mode from an engine-motor combined driving mode, an engine driving mode, and a motor driving mode according to the detected SOC of the battery and the degree of the slope. - View Dependent Claims (6, 7, 8)
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Specification