Turbocharger with dual wastegate
AssigneeCummins Turbo Technologies Limited
InventorsJim McEwan, Lee Robinson
Life of this patent
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Abstract
A turbocharger wastegate valve assembly comprises a first bypass port communicating with a first portion of an exhaust inlet and a first valve member adapted for engaging and sealing a first valve seat surrounding the first bypass port. The valve assembly further comprises a second bypass port communicating with a second portion of an exhaust inlet and a second valve member adapted for engaging and sealing a second valve seat surrounding the second port. A shaft supports 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. The first valve seat is inclined relative to the second valve seat and the shaft has freedom of movement in the axial direction.
Claims20
A turbocharger wastegate valve assembly comprising:
- a first bypass port communicating with a first portion of an exhaust inlet;
- a first valve member adapted for 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 adapted for engaging and sealing a second valve seat surrounding the second port;
- 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.
Dependencies are inferred from the claim text.