Verfahren und Vorrichtung zum Steuern der kontinuierlich variablen Ventileinstellung eines Motors

The method involves calculating an estimated oil temperature on the basis of a coolant temperature at starting of an engine and a period of time elapsed after starting of the engine. The estimated oil temperature is stored in a memory and continuously variable valve timing is controlled based on the...

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Bibliographic Details
Main Author PARK, YONG-JUNG
Format Patent
LanguageGerman
Published 06.12.2007
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
ENGINE PLANTS IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
STEAM ENGINES
WEAPONS
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Summary:The method involves calculating an estimated oil temperature on the basis of a coolant temperature at starting of an engine and a period of time elapsed after starting of the engine. The estimated oil temperature is stored in a memory and continuously variable valve timing is controlled based on the estimated oil temperature. The estimated temperature is modified if a vehicle speed is greater than a predetermined speed. An independent claim is also included for an apparatus for controlling continuously variable valve timing of a vehicle engine.
Bibliography:Application Number: DE20031016061