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US 2014/0174073 A1Published application
Exhaust pressure estimation from wastegate motor current
AssigneeFord Global Technologies, LLC
InventorsAmey Y. Karnik, Yan Wang, Vladimir V. Kokotovic, James Alfred Hilditch, Allan Roy Gale
Life of this patent
Estimating the term…
Abstract
In one embodiment, a method for an engine comprises adjusting an engine operating parameter based on exhaust pressure, the exhaust pressure estimated based on wastegate actuator motor current.
Claims20
A method for an engine, comprising:
- adjusting an engine operating parameter based on exhaust pressure, the exhaust pressure estimated based on wastegate actuator motor current.
An engine system comprising:
- a turbocharger including a turbine coupled to a compressor;
- a wastegate actuated by an electric actuator coupled across the turbine;
- and
- a controller including instructions to:
- determine an amount of current drawn by a motor of the electric actuator;
- estimate an exhaust pressure acting on the wastegate based on the current;
- and
- adjust an operating parameter based on the estimated exhaust pressure.
5 more elements
A method for an engine, comprising:
- estimating exhaust pressure based on an average motor current of a wastegate actuator;
- and
- adjusting wastegate position based on the estimated exhaust pressure.
Dependencies are inferred from the claim text.