Vehicle-Based Strategy for Removing Urea Deposits from an SCR Catalyst

A method is provided for controlling regeneration of an SCR catalyst. The method includes coordinating the regeneration duration and temperature (e.g., longer/shorter regenerations and/or lower/higher temperatures) to the urea deposit loading. In this way, improved regeneration may be achieved due t...

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Hauptverfasser: ELWART SHANE, GRAHAM GEORGE WADE, WATKINS WILLIAM LEWIS HENDERSON, XU LIFENG
Format: Patent
Sprache:eng
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Zusammenfassung:A method is provided for controlling regeneration of an SCR catalyst. The method includes coordinating the regeneration duration and temperature (e.g., longer/shorter regenerations and/or lower/higher temperatures) to the urea deposit loading. In this way, improved regeneration may be achieved due to the particular nature of urea deposits on SCR catalysts.