Valvetrain with rocker arm housing magnetically actuated latch

US10180089B2 · kind B2 · utility

Assignee

• Eaton Intelligent Power Limited · IE

Inventors

• Petr Liskar · Praha, CZ
• Mark A. Juds · New Berlin, US
• Mustafa Huseyin · Karlsruhe, DE
• Peter J. Theisen · West Bend, US
• Amogh Vilas Kank · Jamkhed, IN
• Dale Arden Stretch · Novi, US
• Andrei Dan Radulescu · Marshall, US
• Douglas Anthony Hughes · Novi, US
• Otto Schultheis · Albion, US
• Kyle Crayne · Bloomfield Hills, US
• James E. McCarthy, Jr. · Canton, US

Key dates

• Filing date: Aug 18, 2015
• Grant date: Jan 15, 2019
• Expiry date: Jan 30, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2820/031
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valvetrain includes a rocker arm assembly having an electromagnetic latch housed in a chamber formed by a rocker arm. The chamber may be a retrofit hydraulic chamber. A flux shifting bi-stable latch provides a sufficiently compact design. Isolation of the magnetic elements within the rocker arm chamber may provide protection from metal particles carried by oil in an operating environment for the rocker arm assembly. Wiring connections to the rocker arms may be made through spring posts on the rocker arms. Connection to the rocker arms may be made with springs that can endure the rapid motion induced by the rocker arms. A wiring harness for the rocker arms may attach to hydraulic lash adjusters of the rocker arm assemblies. The rocker arm assemblies and their wiring may be formed into a unitary module that facilitates installation.