Delphi Technologies, Inc.

Vijay Ramappan

Sergio E Garcia

Philip Allen Karau

Brian R Lovegrove

A method and control system to accomplish knock control on a multi-cylinder spark-ignition internal combustion engine equipped variable cam phasing system, comprising monitoring cam position, crankshaft position, and, engine knock signal, determining cam position relative to crankshaft position, and implementing either a global cylinder knock control strategy or an individual cylinder knock control strategy, based upon whether the determined cam position relative to crankshaft position is near a default position, the determined cam position indicates the variable cam phasing system is operating in a transient mode, or, the determined cam position relative to crankshaft position is substantially different from the default position.

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Pittsford, NY, United States of America

Vijay Ramappan