METHOD AND APPARATUS FOR CONTROLLING SPEED CHANGE OF HYBRID VEHICLE
First Claim
1. An apparatus for controlling a speed change of a vehicle, comprising:
- an engine for combustion of fuel to generate power;
a motor configured to supplement the power from the engine, and operate as a generator during braking of the vehicle to generate electrical energy and store the generated electrical energy to a battery;
a transmission configured to convert the power from the engine to a required torque based on a speed and transmitting the power to wheels, and connected in series to the motor; and
a controller configured to operate the transmission to shift in a constant power section of the motor when the motor is performing regenerative braking.
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Accused Products
Abstract
A method and apparatus for controlling a speed change of a hybrid vehicle are provided. The apparatus includes an engine for combustion of fuel to generate power and a motor that is configured to supplement the power from the engine and operate as a generator during braking to generate electrical energy and store the generated electrical energy generated a battery. A transmission is configured to convert the power from the engine to a required torque based on a speed and transmit the power to wheels and is directly connected to the motor. In addition, a controller is configured to operate the transmission to shift in a constant power section of the motor when the motor is performing regenerative braking. The apparatus minimizes the sense of difference felt by a driver by shifting in the constant power section of the motor during the regenerative braking of a hybrid vehicle.
61 Citations
16 Claims
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1. An apparatus for controlling a speed change of a vehicle, comprising:
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an engine for combustion of fuel to generate power; a motor configured to supplement the power from the engine, and operate as a generator during braking of the vehicle to generate electrical energy and store the generated electrical energy to a battery; a transmission configured to convert the power from the engine to a required torque based on a speed and transmitting the power to wheels, and connected in series to the motor; and a controller configured to operate the transmission to shift in a constant power section of the motor when the motor is performing regenerative braking. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling a speed change of a vehicle driven by engine power and motor power which supplements the engine power, comprising:
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sensing, by a controller, a vehicle speed, a transmission stage of a transmission, and available power from a battery; and shifting, by the controller, the transmission stage of the transmission in a constant power section of the motor from the vehicle speed, the present transmission stage of the transmission, and the available power from a battery during regenerative braking. - View Dependent Claims (8, 9, 10, 11)
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12. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:
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program instructions that sense a vehicle speed, a transmission stage of a transmission, and available power from a battery for a vehicle driven by engine power and motor power which supplements the engine power; and program instructions that shift the transmission stage of the transmission in a constant power section of the motor from the vehicle speed, the present transmission stage of the transmission, and the available power from a battery during regenerative braking. - View Dependent Claims (13, 14, 15, 16)
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Specification