公开(公告)号：US12110814B2

公开(公告)日：2024-10-08

申请号：US17420777

申请日：2020-01-02

申请人： Vitesco Technologies GmbH

发明人： YoungMo Lee ,  HaMyeong Song ,  JaeWon Choi

IPC分类号： F01L1/344 ,  F01L13/00 ,  F02D13/02 ,  F02D41/24 ,  F02D41/00 ,  F02D41/20

CPC分类号： F01L1/3442 ,  F01L13/0015 ,  F02D13/0215 ,  F02D41/2464 ,  F01L2001/34426 ,  F01L2001/3443 ,  F01L2001/34433 ,  F01L2201/00 ,  F01L2800/00 ,  F01L2820/041 ,  F02D2041/001 ,  F02D2041/2027 ,  F02D2041/2055 ,  Y02T10/12

摘要： Various embodiments of the teachings herein include a method for controlling a cam using an ECU (electronic control unit) comprising: learning a holding region in which linearity is not ensured by increasing or decreasing a PWM signal while the cam maintains a holding state; based on the results of the learning, generating a final PWM signal; and transmitting the final PWM signal to an oil control valve. The final PWM signal comprises a sum of a minimum PWM signal for the cam to leave the holding region and a control PWM signal for the cam to reach a desired position.

公开(公告)号：US20220065141A1

公开(公告)日：2022-03-03

申请号：US17420777

申请日：2020-01-02

申请人： Vitesco Technologies GmbH

发明人： YoungMo Lee ,  HaMyeong Song ,  JaeWon Choi

IPC分类号： F01L1/344 ,  F02D41/24

摘要： Various embodiments of the teachings herein include a method for controlling a cam using an ECU (electronic control unit) comprising: learning a holding region in which linearity is not ensured by increasing or decreasing a PWM signal while the cam maintains a holding state; based on the results of the learning, generating a final PWM signal; and transmitting the final PWM signal to an oil control valve. The final PWM signal comprises a sum of a minimum PWM signal for the cam to leave the holding region and a control PWM signal for the cam to reach a desired position.