Patent ID: 9481371
Filing Date: 2016-11-01
CPC Classification: B60W,Y02T,Y10S

Claim Text:
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, wherein the controller is configured to compare the present vehicle speed to a final target speed and shift the present transmission stage when the present vehicle speed is less than the final target speed, and wherein the final target speed is set as one having a greater value selected from a target speed calculated from the present transmission stage and the present vehicle speed, and a value obtained by addition of a margin to a threshold speed of the moor calculated from the present transmission stage of the transmission and available power from the battery.