公开(公告)号：US10731517B2

公开(公告)日：2020-08-04

申请号：US15877145

申请日：2018-01-22

Applicant: Eaton Intelligent Power Limited

Inventor： Petr Liskar ,  Dale Arden Stretch ,  James Edward McCarthy ,  Nicholas Peter Gillette ,  Andrei Dan Radulescu

IPC: F01L1/18 ,  F01L1/20 ,  F01L1/053 ,  H01F7/02 ,  H01F7/08 ,  F01L13/00 ,  F01L1/24 ,  H01F7/06 ,  H01F7/16 ,  F01L1/46

Abstract: A valvetrain includes a rocker arm assembly having a rocker arm and an electromagnetic latch assembly. A magnet of the latch assembly is housed within a chamber formed by the rocker arm. The chamber may be a retrofit hydraulic chamber. The magnet may be an electromagnet or a permanent magnet. A flux shifting bi-stable latch provides a sufficiently compact design. Isolation of the magnet within the rocker arm chamber may provide protection from metal particles carried by oil in an operating environment for the rocker arm assembly.