Ford Global Technolgoies, LLC

Vincent Mariucci

John Eric Rollinger

Karen Willard

Tyler Kelly

Methods and systems are provided for improving transient performance in a boosted engine having staged air compression systems. An electric supercharger compressor is staged downstream of a turbocharger compressor in a bypass, airflow diverted from a main intake passage to the bypass via closure of a bypass valve. During selected conditions when the supercharger compressor is not being spun, the bypass valve may be closed to direct air to the engine after flowing through the supercharger in a stand-by mode, thereby enabling a transient increase in torque demand to be rapidly met.

Method and system for a boosted engine

A method comprising in response to coolant loss in a turbocharged engine, deactivating one or more engine cylinders while limiting engine load of one or more active cylinders based on an engine speed, and a cylinder head temperature.

Reducing turbocharged engine overheating

An engine system and method for reducing soot produced by an engine is disclosed. In one example, during purging of stored fuel vapors, a number of fuel injections to a cylinder during a cylinder cycle are maximized to reduce soot formation. The system and method may reduce soot formation within an engine.

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Canton, MI, United States of America

Vincent Mariucci