Cummins Emission Solutions Inc.

Cummins Engine Company, Inc.

Paul C McAvoy

Baohua Qi

Mickey R McDaniel

Balbahadur Singh

Clyde W Xi

Systems and methods are disclosed for determining or diagnosing a reagent dosing system failure to provide sufficient reagent to an exhaust aftertreatment system that includes an SCR catalyst to satisfy a reagent dosing command.

Reagent doser diagnostic system and method

A cylinder head for a valve-controlled internal combustion engine having a bottom surface which faces into an associated combustion chamber and a plurality of spaced valve openings therethrough and also an injector bore for induction of fuel or ignition spark through the combustion face of said cylinder head into the cylinder, said bottom surface or combustion face of said cylinder head having a circular cut-out portion located radially spaced between said injector bore and the center lines of said valve openings, with said cut-out possibly intersecting each of said valve openings.

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Columbus, IN, United States of America

Paul C McAvoy