Patent ID: 6418897
Filing Date: 2002-07-16
Classification: F01L

Abstract:
A device for the angular adjustment of a camshaft relative to the crankshaft of an internal combustion engine including a vane-type adjuster (1) comprising:a drive pinion (11) that is connected in driving relationship to the crankshaft of the internal combustion engine by a traction element and a toothed rim (12), in which drive pinion (11), a plurality of hydraulic working chambers (21) are formed by a hollow cylindrical outer ring (16) having a plurality of radial intermediate walls (15) and two side plates (13, 14) bearing against the outer ring, the vane-type adjuster (1) further comprising a vane rotor (18) that is rotationally fixed to the camshaft of the internal combustion engine, a plurality of vanes (20) being arranged radially on a hub ring (17) of the vane rotor (18), said vanes extending into the working chambers (21) of the drive pinion (11) and dividing each working chamber (21) into two oppositely acting hydraulic pressure chambers (19a, 19b), an axially displaceable fixing pin (33) having a compression spring (35) being arranged in one of the vanes (20) of the vane rotor (18), which fixing pin can be displaced into a locking bore (36) in one of the side plates (13, 14) of the drive pinion (11) when pressure medium pressure falls short of a defined value, so that the vane rotor (18) and the drive pinion (11) are mechanically coupled to each other, characterized in thatthe hollow cylindrical outer ring (16) with the radial intermediate walls (15) and the side plates (13, 14) of the drive pinion (11) of the vane-type adjuster (1) are enclosed pressure medium-tight by an additional housing (2), the housing (2) comprises a camshaft-proximate housing part (3) and a camshaft-distal housing part (4), both these housing parts being made as sheet steel deep drawn parts that are connected to each other by a flange connection, the toothed rim (12) of the drive pinion (11) is fixed to this flange connection by which the side plates (13, 14), at least one of which is a flat, appropriately sized axial tolerance compensating washer being braced against the outer ring (16) by force-locking.