公开(公告)号：US20210148258A1

公开(公告)日：2021-05-20

申请号：US17146574

申请日：2021-01-12

Applicant: Eaton Intelligent Power Limited

Inventor： James E. McCarthy, JR. ,  Edwin Scott Brownell ,  Nikhil Saggam ,  Susheel Dharmadhikari

IPC: F01L13/00 ,  F01L1/08 ,  F01L1/18 ,  F01L1/24

Abstract: A method of providing a rocker arm set for a valvetrain includes providing a first rocker arm configured as a switching rocker arm for a first intake valve, and providing a second rocker arm configured as a fixed rocker arm for a second intake valve, the second rocker arm operating in a normal Otto cycle mode. The first rocker arm operates in a late intake valve closing (LIVC) mode where the first rocker arm is configured to close the first intake valve later than the second intake valve.