System and method for boost control
AssigneeFord Global Technologies, LLC
InventorsJulia Helen Buckland, Baitao Xiao, Tyler Kelly, David Bell
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for improving surge control in a boosted engine system configured with an electric motor to provide electrical boost assistance. Tip-in and tip-out surge are addressed by increasing the opening of a compressor recirculation valve and coordinating the recirculation valve opening with adjustments to an exhaust waste-gate position and a power output by the electric motor. The adjustments enable an intake airflow to be provided that operates the compressor outside a surge region while providing a target boost pressure as operator torque demand increases or decreases.
Claims9
A method, comprising:
- responsive to a predicted boost overshoot,
- adjusting each of a regenerative torque output by an electric motor coupled to a boosting device and
- an opening of a continuously variable compressor recirculation valve (CCRV), the adjusting based on a state of charge (SOC) of a battery coupled to the electric motor.
Dependencies are inferred from the claim text.