公开(公告)号：US20170268434A1

公开(公告)日：2017-09-21

申请号：US15532237

申请日：2014-12-08

Applicant: Wärtsilä Finland Oy

Inventor： Sören HEDVIK ,  Magnus SUNDSTEN

IPC: F02D13/02 ,  F01L1/26 ,  F01L1/16 ,  F01L1/14

CPC classification number: F02D13/02 ,  F01L1/08 ,  F01L1/146 ,  F01L1/16 ,  F01L1/26 ,  F01L9/025 ,  F01L2013/0089 ,  F01L2820/01 ,  F02D13/0234

Abstract: A method of controlling an operation of an inlet valve system arranged in connection with each cylinder of an internal combustion piston engine, includes monitoring at least one parameter relating to engine load conditions, controlling using a primary control procedure an opening and closing timing of an inlet valve in response to the at least one parameter, and feeding charge air into the cylinder when the inlet valve is open. In a secondary control procedure a parameter relating to engine load conditions is measured and the closing timing of the inlet valve of the inlet valve system is controlled in response to the at least parameter independently from and with higher priority than the primary control procedure.