Controller and method for configuring pump and doser of aftertreatment system

A controller for use in an aftertreatment system that includes a doser configured to dose reductant into a decomposition chamber and a pump configured to supply the reductant to the doser is configured to be operatively coupled to the doser and the pump and programmed to cause the pump and the doser...

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Bibliographic Details
Main Authors Kerang Wang, Li Liu
Format Patent
LanguageEnglish
Published 28.08.2024
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
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Summary:A controller for use in an aftertreatment system that includes a doser configured to dose reductant into a decomposition chamber and a pump configured to supply the reductant to the doser is configured to be operatively coupled to the doser and the pump and programmed to cause the pump and the doser to operate in an idle mode in which the pump supplies the reductant from a reductant tank to the doser at steady state, the doser does not dose the reductant, and the reductant supplied to the doser by the pump is recirculated to the reductant tank. The controller is also programmed to, while the pump and the doser operate in the idle mode, determine a first speed of the pump required to achieve a predetermined target pressure. The controller is also programmed to cause the pump and the doser to operate in a dosing mode.
Bibliography:Application Number: GB20240007883