ROTOR FOR VARIABLE VALVE TIMING SYSTEM AND VVT SYSTEM COMPRISING THE ROTOR

摘要

The invention relates to rotor body for a variable valve timing system, comprising a main body comprising a front side, a back side and vanes tips, made from a fibrous reinforced polymeric material, a central part comprising an (axial) bore hole made of metal, and sealing elements made of a non-reinforced polymeric material at the vain tips and at the front side and back side. The invention also relates to a variable valve timing system comprising an assembly of a rotor and a stator receiving the rotor on a camshaft, wherein the rotor is a rotor body as described above, wherein an end part of the camshaft and/or a fixing element is received in the bore hole and the rotor is fixed at the end part of the camshaft with the fixing element.

主权项

1. Rotor body for a variable valve timing system for an engine, comprising
a main body comprising
a front side for engaging with a front side cover and a back side for engaging with a back side cover,vanes for defining variable oil or air pressure chambers inside a stator housing, having vane tips for engaging with the stator housing,channels for oil or air transport from one pressure chamber to other pressure chambers, and a central part comprising an (axial) bore hole running from the front side to the back side for receiving a camshaft or a bolt for fixing to the camshaft, wherein the main body is comprised of a fibrous reinforced polymeric material and the central part comprising the axial bore is made of metal, the rotor body comprises
dynamic sealing elements (i) at the vane tips for engaging with the stator housing, anddynamic sealing elements (ii) at the front side and the back side for engaging with the front side cover and the back side coverwherein the dynamic sealing elements (i) and (ii) are made of a non-reinforced plastic material, and wherein the metallic central part comprises protrusions protruding into the fibrous reinforced polymeric material and/or holes filled with the fibrous reinforced material.