Actuator for camless valve drive in an internal combustion engine

An actuator for a camshaft-less valve drive in an internal combustion engine has an anchor shaft (20) with a main section and an end section, each of different materials. The material of the end section has a greater hardness than that of the main section. The sections are firmly connected to each o...

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Bibliographic Details
Main Authors GEBAUER, KLAUS, STRZODA, WALTER
Format Patent
LanguageEnglish
French
German
Published 02.05.2007
Subjects
BLASTING
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:An actuator for a camshaft-less valve drive in an internal combustion engine has an anchor shaft (20) with a main section and an end section, each of different materials. The material of the end section has a greater hardness than that of the main section. The sections are firmly connected to each other. The end section material can be steel, highly alloyed steel, ceramic and have a Vickers hardness of at least 750 N/mm2. The valve arrangement involves a gas exchange valve (12) with a valve shaft (22) in a cylinder head (10). The valve is operated by an electro-magnetic actuator (14). The actuator has two electro-magnets (16,18), through which an anchor shaft (20) extends, which at its lower end acts on the valve shaft.
Bibliography:Application Number: EP20030003192