SYSTEMS AND METHODS FOR DETERMINING THE QUANTITY OF A COMBUSTION PRODUCT IN A VEHICLE EXHAUST
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United States of America Patent
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Feb 17, 2017
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Mar 15, 2013
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Abstract
Exhaust after treatment systems for internal combustion engine powered vehicles are provided. One system includes logic in the form of one or more routines implemented by one or more of the system's components for determining the quantity of certain combustion products present in the exhaust that exits an oxidation catalyst, such as a diesel oxidation catalyst (DOC), without the use of a specific sensor for each combustion product. Results from such a determination may then be used to estimate the amount of soot present in the particulate filter. This estimated value of soot present in the particulate filter can then be subsequently used to determine when the particulate filter should be actively regenerated.
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