公开(公告)号：US10151389B2

公开(公告)日：2018-12-11

申请号：US15645476

申请日：2017-07-10

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

发明人： Sang Hee Shin ,  Se Jin Kim ,  Young Joon Kim ,  Kyung Moo Lee ,  Hyun Suk Kim ,  Chan Hyuk Song

IPC分类号： F16H61/662

摘要： A method for controlling a shift speed of a continuous variable transmission includes: a first calculating step for calculating a surplus oil pump RPM based on a transmission oil temperature, an engine RPM, and a turbine torque; a second calculating step to calculate a surplus oil amount based on the surplus oil pump RPM, the transmission oil temperature, the engine RPM, and a line pressure; a third calculating step to calculate an allowable shift speed based on the surplus oil amount and a current gear ratio; a shift speed comparing step to compare the shift speed of a vehicle with the allowable shift speed; and a shift speed controlling step in which the controller varies the shift speed or the allowable shift speed to control the shift speed to be equal to or less than the allowable shift speed when the shift speed exceeds the allowable shift speed.