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1. (WO2017156125) INDUCTIVE COUPLING TO ROCKER ARM ASSEMBLIES

Pub. No.:    WO/2017/156125    International Application No.:    PCT/US2017/021357
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: F01L 9/04
F01L 1/18
Applicants: EATON INTELLIGENT POWER LIMITED
Inventors: MCCARTHY, James Edward, Jr.
RHINEHART, Phillip A.
Title: INDUCTIVE COUPLING TO ROCKER ARM ASSEMBLIES
Abstract:
An internal combustion engine includes a cylinder head and a valvetrain including a poppet valve, a cam shaft on which is mounted a cam, and a rocker arm assembly. The rocker arm assembly includes a rocker arm and a cam follower configured to engage the cam as the cam shaft rotates. The rocker arm assembly is operative to transmit force from the cam to actuate the valve and includes an electrical device mounted to the rocker arm. A first electrical circuit includes the electrical device and a first conductor mounted to the rocker arm and a second electrical circuit includes a second conductor mounted off the rocker arm. The first and second conductors are inductively coupled to an extent that enables effective power transfer or communication between them. Inductive power transfer avoids the use of wires that could become caught, clipped, or fatigued and consequently short out.