Patent ID: 7004130

Claim:
A camshaft adjuster for an internal combustion engine comprising: a) a camshaft; b) a setting unit comprising: i) an inner body coupled to said camshaft so as to rotate with it; and ii) an outer body that is coupled to said inner body and mounted in an outer region relative to said inner body and said camshaft; c) a control unit for adjusting an angle of said camshaft; and d) at least one insert part disposed inside an inner region of said camshaft, wherein said insert is formed from a sheet metal reinforced plastic component, wherein said insert part and said camshaft form a plurality of hydraulic medium guides, wherein at least one hydraulic medium guide is in communication with said control unit and wherein said setting unit is in communication with least one hydraulic medium guide so that said setting unit can be controlled by said control unit to set an angle of said camshaft and wherein said hydraulic medium guides are formed non-coaxially such that said hydraulic medium guides form a variable channel cross section across an axial length of said camshaft.