Patent ID: 9670833
Date: 2017-06-06
CPC Classifications: F02B,F02M,F16K,Y02T,Y10T

Claim:
1. An actuator for an exhaust gas recirculation valve, wastegate or variable turbine geometry device of a turbocharger, comprising: a drive; at least one rotatable threaded element; at least one output element that can be driven in translation thereby, wherein the threaded element has at least two regions of differing pitch and a rotational axis of the threaded element is inclined relative to a translational axis of the output element; wherein the two regions of differing pitch comprise a finer pitch region and a coarser pitch region, wherein the finer pitch region extends between a starting position at a first end of a thread of the threaded element and an ending position of between 40 degrees and 70 degrees; and a transition region defined by a transition pitch that extends between the finer pitch region and the coarser pitch region, wherein the transition pitch increases continuously from the finer pitch region to the coarser pitch region.