公开(公告)号：WO2018106812A1

公开(公告)日：2018-06-14

申请号：PCT/US2017/064923

申请日：2017-12-06

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： JOHNSON, Samuel ,  KHALED, Nassim ,  HUDSON, Patrick C.

IPC: F01N3/08 ,  F01N3/10 ,  F01N3/20

Abstract: A system for controlling reductant spray momentum for a target spray distribution includes an exhaust system having an exhaust conduit with exhaust flowing therethrough, a reductant injection system for injecting reductant into the exhaust flowing through the exhaust system based on one or more injection parameters, a reductant supply system for supplying reductant to the reductant injection system based on one or more supply parameters, and a controller. The controller is configured to access current vehicle, engine, exhaust, or reductant condition parameters, determine one or more control parameters based on a control model and the accessed current vehicle, engine, exhaust, or reductant condition parameters, and modify a value of the one or more injection parameters or the one or more supply parameters to control the reductant spray.

公开(公告)号：WO2019156690A1

公开(公告)日：2019-08-15

申请号：PCT/US2018/017841

申请日：2018-02-12

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： HUDSON, Patrick C.

IPC: F01N3/00 ,  F01N3/08 ,  F01N3/10 ,  F01N3/18 ,  F01N3/20

Abstract: A reductant insertion assembly comprises a reductant bladder defining a bladder internal volume for holding a reductant. The reductant bladder comprises a bladder inlet and a bladder outlet. A pressure sensor is positioned downstream of the bladder outlet. The pressure sensor is operable to sense a pressure of the reductant downstream of the reductant bladder, and generate a pressure signal indicative of the pressure. A compression mechanism is operably coupled to the reductant bladder. The compression mechanism is configured to selectively exert a compressive force on the reductant bladder so as to expel the reductant therefrom via the bladder outlet. The compression mechanism exerts the compressive force in response to the pressure signal.

公开(公告)号：WO2016178648A1

公开(公告)日：2016-11-10

申请号：PCT/US2015/028775

申请日：2015-05-01

Applicant: CUMMINS EMISSION SOLUTIONS, INC.

Inventor： HUDSON, Patrick C. ,  KHALED, Nassim

IPC: F01N9/00 ,  F01N11/00 ,  F01N99/00

CPC classification number: F01N3/208 ,  F01N9/00 ,  F01N2610/1406 ,  F01N2610/148 ,  F01N2900/1808 ,  F01N2900/1812 ,  F01N2900/1814 ,  Y02T10/24 ,  Y02T10/47

Abstract: An auto-calibration controller configured to automatically tune a dosing unit of an aftertreatment system. The auto-calibration controller is configured to command the dosing unit to dose reductant at a first dosing command rate at a first input pressure value based on a dosing command value of a dosing command table. The auto-calibration controller is further configured to interpret a parameter indicative of an actual amount of dosed reductant by the dosing unit and compare the actual amount of dosed reductant to an expected amount of dosed reductant. The auto-calibration controller is further configured to update the dosing command value of the dosing command table of a control module of the aftertreatment system responsive to the comparison of the actual amount of dosed reductant to the expected amount of dosed reductant.

Abstract translation: 自动校准控制器，被配置为自动调整后处理系统的计量单元。 自动校准控制器被配置为基于配量命令表的配量命令值，以第一输入压力值以第一剂量命令速率对剂量单元进行剂量还原剂。 自动校准控制器还被配置为解释指示给药单元的计量还原剂的实际量的参数，并将计量的还原剂的实际量与预计的剂量还原剂量进行比较。 自动校正控制器进一步被配置为响应于实际的剂量还原剂量与预计的剂量还原剂量的比较来更新后处理系统的控制模块的给药指令表的给药指令值。