公开(公告)号：US11643950B2

公开(公告)日：2023-05-09

申请号：US17319185

申请日：2021-05-13

Applicant: BorgWarner Inc.

Inventor： Andrew Morris ,  Jiju Alexander ,  Daniel Brown

IPC: F01L9/20 ,  F01L1/344 ,  F02D13/08 ,  F01L1/352

CPC classification number: F01L9/20 ,  F01L1/344 ,  F02D13/08 ,  F01L1/352 ,  F01L2800/01 ,  F01L2820/032 ,  F01L2820/041 ,  F01L2820/044

Abstract: A method includes determining a value of an operational motor current limit and setting a value of a startup current limit equal to a predetermined value in excess of the value of the operational motor current limit if a set of predetermined conditions is satisfied. The method includes determining that operation of the engine has been interrupted, operating the electric motor of the variable valve timing mechanism with a current having a magnitude that is less than or equal to the startup current limit after determining that operation of the engine has been interrupted, determining that operation of the engine has resumed, and operating the electric motor of the variable valve timing mechanism with a current having a magnitude that is less than or equal to the operational motor current limit after determining that operation of the engine has resumed.

公开(公告)号：US20220364485A1

公开(公告)日：2022-11-17

申请号：US17319185

申请日：2021-05-13

Applicant: BorgWarner Inc.

Inventor： Andrew Morris ,  Jiju Alexander ,  Daniel Brown

IPC: F01L9/20 ,  F01L1/344

Abstract: A method includes determining a value of an operational motor current limit and setting a value of a startup current limit equal to a predetermined value in excess of the value of the operational motor current limit if a set of predetermined conditions is satisfied. The method includes determining that operation of the engine has been interrupted, operating the electric motor of the variable valve timing mechanism with a current having a magnitude that is less than or equal to the startup current limit after determining that operation of the engine has been interrupted, determining that operation of the engine has resumed, and operating the electric motor of the variable valve timing mechanism with a current having a magnitude that is less than or equal to the operational motor current limit after determining that operation of the engine has resumed.