Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 20, 2007
Patent Application Number
11017363
Date Filed
December 20, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
A reductant dosing control system, for use in a Selective Catalytic Reduction (SCR) system of a motor vehicle includes an input receiving a NOx feedback signal from an NOx sensor provided to the SCR system. A base dosing module calculates a required quantity of reductant to inject in front of a SCR catalyst of the SCR system based on the NOx feedback signal. The SCR catalyst has ammonia storage properties. An output signals a reductant metering mechanism to periodically or continuously inject excess reductant based on the required quantity of reductant.
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