Ford Global Technolgoies, LLC

Kevin Payne

Joseph Norman Ulrey

Gregory McConville

Julia Helen Buckland

Robert Andrew Wade

Keith D Miazgowicz

Ahsanul Karim

Adam Michael Christian

Methods and systems are provided for recirculating compressed air across a compressor through a high flow and a low flow compressor recirculation path. Flow through the recirculation paths is controlled via respective valves and valve opening is adjusted based on a throttle mass flow so as to maintain a compressor flow rate at or above a surge constrained flow rate. By maintaining a sufficiently high compressor flow rate during steady state and transient conditions, the compressor state can be maintained outside a surge region.

Methods and systems for surge control

Systems and methods for controlling compressor inlet flow in a turbocharger of an engine are described. In one example, a method for controlling a compressor inlet flow of an engine turbocharger system includes: directing air from a high pressure source to an inlet upstream of a compressor wheel via a conduit coupled to the inlet and the high pressure source, where the conduit is obliquely coupled to the inlet.

Turbocharger compressor inlet flow control

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Belleville, MI, United States of America

Kevin Payne