Mitigation of diesel emission fluid (DEF) deposition in exhaust system for engine

An exhaust system 24 for an engine includes an exhaust conduit 26, a selective catalytic reduction (SCR) device 32 in the exhaust conduit 26, and a diesel emission fluid (DEF) system 34 which includes a DEF delivery controller 60 structured to receive a condition signal indicative of a DEF depositio...

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Bibliographische Detailangaben
1. Verfasser:	Keith D. Hogan
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	An exhaust system 24 for an engine includes an exhaust conduit 26, a selective catalytic reduction (SCR) device 32 in the exhaust conduit 26, and a diesel emission fluid (DEF) system 34 which includes a DEF delivery controller 60 structured to receive a condition signal indicative of a DEF deposition risk condition in the exhaust system 24, and to command an increased heat energy output of a preheater 42 to preheat DEF to be admitted into the exhaust conduit 26, such that a temperature of the DEF is increased to a deposition-mitigation temperature; Related methodology and control logic is also disclosed.