Deere + Company

Josh C Schmitt

Scott Allen Chase

Taner Tuken

Scott A Chase

A method for injecting a reductant into an exhaust gas of a power system. The method includes oscillating injections of the reductant between a higher reductant injection rate and a lower reductant injection rate. The higher injection rate is high enough to result in storage of a decomposed form of the reductant on a selective catalytic reduction on-filter ('SCR+F'), and the lower injection rate being low enough to result in depletion of the decomposed form of the reductant on the SCR+F. The SCR+F includes a diesel particular filter and a selective catalytic reduction catalyst applied thereto.

Method for injecting reductant into an exhaust gas of an engine

A method for injecting a reductant into an exhaust gas of a power system. The method includes injecting the reductant at a commanded flow rate, while simultaneously oscillating a supply pressure of the reductant between a higher supply pressure and a lower supply pressure.

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Waterloo, IA, United States of America

Josh C Schmitt