公开(公告)号：US09903247B2

公开(公告)日：2018-02-27

申请号：US14985736

申请日：2015-12-31

Applicant: Cummins Emission Solutions Inc.

Inventor： Royce V. Koshy ,  Shireen Faizi ,  Jeremy D. Harris ,  Aditya Hegde

IPC: F01N3/00 ,  F01N3/20

CPC classification number: F01N3/208 ,  F01N3/2066 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/0412 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1411 ,  Y02T10/24

Abstract: A system for apportioning reductant dosing amounts in multi-doser architectures includes an engine, an aftertreatment system in fluid communication with the engine, and a controller. The aftertreatment system includes a first doser configured to dose reductant into a first decomposition reaction member and a second doser configured to dose reductant into a second decomposition reaction member. The controller receives engine operating conditions and determines a total reductant amount based on the engine operating conditions. The controller also apportions the total reductant amount into a first apportioned reductant amount based on a first maximum reductant dosing amount for the first doser and a second apportioned reductant amount based on a second maximum reductant dosing amount for the second doser. The controller outputs a first apportioned reductant dosing command to the first doser and a second apportioned reductant dosing command to the second doser.

公开(公告)号：US20170191393A1

公开(公告)日：2017-07-06

申请号：US14985736

申请日：2015-12-31

Applicant: Cummins Emission Solutions Inc.

Inventor： Royce V. Koshy ,  Shireen Faizi ,  Jeremy D. Harris ,  Aditya Hegde

IPC: F01N3/20

CPC classification number: F01N3/208 ,  F01N3/2066 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2900/0412 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1411 ,  Y02T10/24

Abstract: A system for apportioning reductant dosing amounts in multi-doser architectures includes an engine, an aftertreatment system in fluid communication with the engine, and a controller. The aftertreatment system includes a first doser configured to dose reductant into a first decomposition reaction member and a second doser configured to dose reductant into a second decomposition reaction member. The controller receives engine operating conditions and determines a total reductant amount based on the engine operating conditions. The controller also apportions the total reductant amount into a first apportioned reductant amount based on a first maximum reductant dosing amount for the first doser and a second apportioned reductant amount based on a second maximum reductant dosing amount for the second doser. The controller outputs a first apportioned reductant dosing command to the first doser and a second apportioned reductant dosing command to the second doser.