Patent ID: 8336309

Claim:
A turbocharger wastegate valve assembly comprising: a first bypass port communicating with a first portion of an exhaust inlet; a first valve member engaging and sealing a first valve seat surrounding the first bypass port; a second bypass port communicating with a second portion of an exhaust inlet; a second valve member engaging and sealing a second valve seat surrounding the second port; and a shaft supporting each valve member for rotation about a shaft axis to lift both the first and second valve members from sealing engagement with the first and second valve seats respectively; wherein: the first valve seat is inclined relative to the second valve seat and the shaft has freedom of movement in the axial direction; the first valve seat lies in a first plane and the second valve seat lies in a second plane; and said shaft axis extends in a direction substantially orthogonal to a direction of a line of intersection of the first and second planes.