Ammonia (NH3) storage control system and method at low nitrogen oxide (NOx) mass flow rates

A control system comprising an ammonia (NH3) storage level determination module that determines a NH3 storage level in an exhaust system, a desired NH3 storage level determination module that determines a desired NH3 storage level based on an exhaust temperature, and a nitrogen oxide (NOx) mass flow...

Full description

Saved in:
Bibliographic Details
Main Author SOLBRIG CHARLES E
Format Patent
LanguageEnglish
Published 17.01.2012
Subjects
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
STEAM ENGINES
WEAPONS
Online AccessGet full text

Cover

More Information
Summary:A control system comprising an ammonia (NH3) storage level determination module that determines a NH3 storage level in an exhaust system, a desired NH3 storage level determination module that determines a desired NH3 storage level based on an exhaust temperature, and a nitrogen oxide (NOx) mass flow rate control module that controls a NOx mass flow rate based on a difference between the NH3 storage level and the desired NH3 storage level. A method comprising determining a NH3 storage level in an exhaust system, determining a desired NH3 storage level based on an exhaust temperature, and controlling a NOx mass flow rate based on a difference between the NH3 storage level and the desired NH3 storage level.
Bibliography:Application Number: US20080273751