Method for adjusting a camshaft of an internal combustion engine and internal combustion engine with an adjustable camshaft

Abstract

A method for adjusting a camshaft of an internal combustion engine during a stop phase and during a subsequent new startup phase of the internal combustion engine. Such methods are used, in particular, in so-called start-stop designs for combustion engines. The camshaft controls intake valves and/or exhaust valves of the internal combustion engine and is adjustable by a camshaft adjuster. By a desired startup position of the camshaft adjuster, control time points of the intake valves and/or the exhaust valves are defined in which mechanical work necessary for starting the internal combustion engine is reduced and/or pollutant emissions of the internal combustion engine are reduced. In the method according to the invention it is provided that the camshaft adjuster is set in a desired stop position during the stop phase. During a first section of the startup phase, the camshaft adjuster is set from the desired stop position into the desired startup position. During a second section of the startup phase, a setting of the camshaft adjuster is performed as a function of measured operating parameters of the internal combustion engine. Furthermore, the invention relates to an internal combustion engine with a camshaft that can be adjusted by a camshaft adjuster.