公开(公告)号：US10731518B2

公开(公告)日：2020-08-04

申请号：US16460886

申请日：2019-07-02

Applicant: Eaton Intelligent Power Limited

Inventor： Petr Liskar ,  Jiri Cecrle ,  Dale Arden Stretch ,  Michael J. Campbell ,  Tomas Drabek ,  James Edward McCarthy, Jr. ,  Austin Robert Zurface ,  Robert Philip Benjey ,  Eric John Yankovic ,  Brian Karl Vandeusen ,  Nicholas Peter Gillette ,  Michael James Stanton ,  Thomas Michael Tembreull ,  Anthony Leon Spoor

IPC: F01L1/18 ,  F01L1/22 ,  F01L1/053 ,  F01L13/00 ,  F01L1/24 ,  F01L3/24

Abstract: A valvetrain for an internal combustion engine of the type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, and a camshaft includes a rocker arm assembly, a pivot providing a fulcrum for a rocker arm of the rocker arm assembly, and a latch assembly. An electrical device mounted to the rocker arm assembly receives power or communicates through a circuit that includes an electrical connection formed by abutment between surfaces of two distinct parts. The rocker arm assembly is operative to move one of the two abutting surfaces relative to the other in response to actuation of the cam follower. Forming an electrical connection through abutting surfaces that are free to undergo relative motion may reduce or eliminate the need to run wires to a mobile portion of the rocker arm assembly.

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.