Electromagnetic actuator, including sound muffling means, for operating a cylinder valve

US5878704A · kind A · utility

Assignee

• FEV Motorentechnik GmbH & Co., KG · DE

Inventors

• Michael Schebitz · Attendorn, DE
• Franz Pischinger · Aachen, DE

Key dates

• Filing date: Dec 18, 1997
• Grant date: Mar 9, 1999
• Expiry date: Dec 18, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2301/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An electromagnetic actuator, particularly for operating a cylinder valve of an internal-combustion engine, includes an electromagnet for generating an attracting electromagnetic force; an armature movable into contact with and away from the electromagnet; a spring arrangement connected to the armature and opposing the electromagnetic force; and a sound muffling device attached to the electromagnet for reducing sound transmission by body vibration from the electromagnet.