Ford Global Technolgoies, LLC

Rama Sanghvi

Chris Paul Glugla

Robert Baskins

Paul A Pietrzyk

James Matthew Kindree

Mark Paul Guerrier

Joseph Lyle Thomas

Gregory Blin

Joseph Michael DeAngelis

Michael Ryan Scannell

Methods and systems are provided for addressing pre-ignition occurring while operating with blow-though air delivery. A variable cam timing device used to provide positive intake to exhaust valve overlap is adjusted in response to an indication of pre-ignition to transiently reduce valve overlap. Pre-ignition mitigating load limiting and enrichment applied during a blow-through mode is adjusted differently from those applied when blow-through air is not being delivered.

Method and system for pre-ignition control

A method for controlling an internal combustion engine based on the amount of un-burned fuel dissolved in the engine oil, and returned into the manifold through the PCV valve as the engine oil temperature rises via adjusting fuel injection into a cylinder from a fuel injector, in a fuel delivery system. The fuel dilution in engine oil and the amount of fuel entering the intake manifold through the PCV valve can be determined based on one or more of oil volume, fuel composition (e.g., ethanol content), oil temperature, engine temperature, engine speed, engine load, engine run time, injected fuel mass, and exhaust gas composition.

Controlling an internal combustion engine through modeling compensation of PCV fuel flow due to oil dilution

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Northville, MI, United States of America

Rama Sanghvi