Cummins Inc.

Cummins Emission Solutions Inc.

Joseph Andrew Hudson

Tony James Hall

Atul S Abhyankar

Thomas R Nelson

Sandeep Sarabudla

Brian James Witsaman

Paul M Hauser

A dosing control system includes a shut-off valve, a reductant pump, a reductant injector, and a recirculation conduit. The shut-off valve is configured to receive reductant from a reductant tank. The reductant pump is configured to selectively receive the reductant from the shut-off valve. The reductant pump is configured to selectively be in a reductant pump command state. The reductant injector is configured to selectively receive the reductant from the reductant pump. The recirculation conduit is coupled to the reductant injector and the reductant tank. The recirculation conduit is configured to selectively provide the reductant from the reductant injector to the reductant tank. The shut-off valve is configured to prevent a flow of the reductant to the reductant pump when the reductant pump is not in the reductant pump command state.

Systems and methods for controlling a shut-off valve of a dosing control system

A combustion system (), a control module () for a combustion system () and a method of operating the combustion system () are disclosed. The method may be implemented by the control module () in the combustion system (). The method comprises predicting an iced condition of the pressure sensor assembly (); responsive to predicting the iced condition, controlling exhaust emissions without using a pressure parameter sensed with the pressure sensor assembly () in the iced condition; predicting a de-iced condition of the pressure sensor assembly (); and responsive to predicting the de-iced condition, controlling the exhaust emissions using the pressure parameter sensed with the pressure sensor assembly () in the de-iced condition.

System and method to detect and respond to iced sensors in exhaust after-treatment system

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Columbus, IN, United States of America

Joseph Andrew Hudson