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US 10,240,516 B2Granted
System for wastegate control
AssigneeFord Global Technologies, LLC
InventorsHamid-Reza Ossareh, Baitao Xiao, Mrdjan J. Jankovic, Dave G. Hagner, Julia Helen Buckland
Life of this patent
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Abstract
Methods and systems are provided for controlling a wastegate coupled to a turbine. In one example, a method may include during steady engine operation, actuating a wastegate to introduce an oscillation in boost pressure, and updating gain of a wastegate feedback controller responsive to the oscillation in boost pressure.
Claims5
An engine system, comprising:
- a turbocharger;
- a wastegate coupled to a turbine of the turbocharger;
- a throttle controlling air intake to an engine intake manifold;
- a sensor upstream of the throttle for sensing a boost pressure;
- and
- an engine controller configured with computer readable instructions stored on non-transitory memory for:
- actuating the wastegate via a wastegate feedback controller;
- during steady engine operation, actuating the wastegate to induce boost pressure oscillation, and actuating the throttle responsive to the boost pressure oscillation;
- and
- updating the gain of the wastegate feedback controller based on the boost pressure oscillation.
7 more elements
Dependencies are inferred from the claim text.