CAMSHAFT WITH CAMSHAFT ADJUSTER

摘要

The invention relates to a camshaft for actuating the gas exchange valves of an internal combustion engine, said camshaft comprising a camshaft tube (1), a hydraulic camshaft adjuster (2), a valve (3) for controlling the hydraulic fluid supplied to the camshaft adjuster (2) and an actuation device (5), arranged in the interior (4) of the camshaft tube (1), for actuating the valve (3), said actuation device being secured against displacement in the axial direction. The aim of the invention is to devise a camshaft which is light-weight and wherein functional elements in addition to the actuation device and optionally the valve can be integrated into the interior of the camshaft. It should furthermore be possible to arrange an oil or vacuum pump at the end of the camshaft opposite the camshaft adjuster, said pump being drivable by the camshaft. According to the invention, the actuation device (5) is designed as an electromagnetic, piezoelectric or electrical actuator and is connected to the camshaft tube (1) such that they rotate together.