Method for diagnosing the operational state of a two-step variable valve lift device

A method for diagnosing an operational state of a variable valve lift (WL) device in an engine, wherein the WL device is capable of operating in two modes of operation. The method includes measuring a rotational speed of an engine crankshaft while the engine is running or cranking, correlating the m...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WATERS, JAMES P, DARROW, JON C
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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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