Turbocharger system having an air-cooled wastegate actuator
AssigneeFord Global Technologies, LLC
InventorsShuya Shark Yamada, Timothy J. Gardner, Christopher David Tiernan, Matthew Coon, Shawn Michael Spannbauer
Life of this patent
Estimating the term…
Abstract
A system and methods for a vehicle are provided for adjusting each of a speed of a radiator fan and a position of grille shutters of the vehicle responsive to a temperature at a wastegate exceeding a temperature threshold. In one example, a system may include a radiator fan at a front end of a vehicle, an engine coupled to an exhaust passage, a turbine in the exhaust passage having a bypass conduit, a wastegate positioned in the turbine conduit, and the wastegate receiving airflow from downstream of the radiator fan via a cooling duct.
Claims20
A system, comprising:
- a radiator fan at a front end of a vehicle;
- an engine coupled to an exhaust passage;
- a turbine positioned in the exhaust passage;
- a bypass conduit in fluidic communication with a turbine inlet and a turbine outlet;
- a wastegate positioned in the bypass conduit;
- and
- a wastegate actuator adjusting a position of the wastegate, the wastegate actuator receiving airflow from downstream of the radiator fan via a cooling duct.
A method for a boosted engine in a vehicle, comprising:
- adjusting each of a speed of a radiator fan and a position of grille shutters of the vehicle responsive to a temperature at a wastegate exceeding a temperature threshold.
A method for a boosted engine in a vehicle, comprising:
- following engine shut down to an engine-off condition,
- estimating a temperature at a wastegate;
- and
- if the temperature at the wastegate exceeds a threshold temperature,
- increasing a speed of a radiator fan for a pre-determined duration;
- and
- directing cooling airflow towards the wastegate via a cooling duct.
Dependencies are inferred from the claim text.