Patent ID: 9046021
Filing Date: 2015-06-02
Classification: B01J,F01N,Y02T

Abstract:
1. An exhaust treatment system comprising: an exhaust gas particulate filter; an exhaust gas oxidation catalyst in fluid communication with said exhaust gas particulate filter; a hydrocarbon injector supplying a dose of hydrocarbon fuel to said exhaust gas particulate filter; a regeneration management module controlling said hydrocarbon injector; said regeneration management module receiving signals indicative of an outlet temperature of said exhaust gas oxidation catalyst and an outlet temperature of said exhaust gas particulate filter; said regeneration management module setting a reference temperature as one of said outlet temperature of said exhaust gas oxidation catalyst and said outlet temperature of said exhaust gas particulate filter; said regeneration management module initializing a regeneration temperature target and a closed loop temperature targeting regime that indexes said regeneration temperature target based on a profile time and said reference temperature such that said regeneration temperature target increases as a function of time and is ramped up non-linearly with time in response to a rise in said reference temperature; and said regeneration management module determining said dose of hydrocarbon fuel based on said regeneration temperature target.