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公开(公告)号：US10337385B2
公开(公告)日：2019-07-02
申请号：US15828883
申请日：2017-12-01
Applicant: Perkins Engines Company Limited
Inventor： Siddharth Subhash Gharpure , Stuart Smith , James K. McCloskey , Tom Carlill
Abstract: A method for monitoring an SCR injection system is disclosed. The method includes operating a pump, and measuring a first pressure drop value in the SCR injection system during actuation of a reductant injector. A second pressure drop value in the SCR injection system is measured during a further actuation of the reductant injector. It is determined to perform a deposit mitigation strategy based on the first pressure drop value and the second pressure drop value.
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公开(公告)号：US20180163605A1
公开(公告)日：2018-06-14
申请号：US15828883
申请日：2017-12-01
Applicant: Perkins Engines Company Limited
Inventor： Siddharth Subhash Gharpure , Stuart Smith , James K. McCloskey , Tom Carlill
CPC classification number: F01N11/002 , F01N3/208 , F01N3/2896 , F01N11/00 , F01N2550/05 , F01N2610/144 , F01N2610/146 , F01N2610/1493 , F01N2900/1808 , Y02T10/24 , Y02T10/47
Abstract: A method for monitoring an SCR injection system is disclosed. The method includes operating a pump, and measuring a first pressure drop value in the SCR injection system during actuation of a reductant injector. A second pressure drop value in the SCR injection system is measured during a further actuation of the reductant injector. It is determined to perform a deposit mitigation strategy based on the first pressure drop value and the second pressure drop value.
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3.发明申请Method and Apparatus for Estimating the Amount of Reductant Slip in a Selective Catalytic Reduction Device 审中-公开用于估计选择性催化还原装置中的还原剂滑移量的方法和装置公开(公告)号：US20150190749A1
公开(公告)日：2015-07-09
申请号：US14407703
申请日：2013-06-26
Applicant: Perkins Engines Company Limited
Inventor： Gavin Williams , Matthew Nicholson , Stuart Smith
CPC classification number: B01D53/346 , B01D53/56 , B01D53/8625 , B01D2251/2062 , B01D2257/404 , F01N3/208 , F01N9/00 , F01N2550/05 , F01N2560/026 , F01N2610/02 , F01N2900/1402 , F01N2900/1616 , G01N33/0004 , Y02A50/2325 , Y02T10/24 , Y02T10/47 , Y10T436/175383
Abstract: The present disclosure provides a method and apparatus for estimating the amount of ammonia output from an SCR device by determining a NOx conversion efficiency of the SCR device using a variance of a NOx input measurement and a variance of a NOx output measurement, obtaining an estimate of NOx output from the SCR device using the NOx conversion efficiency and using that estimate to determine an estimate of ammonia output from the SCR device.
Abstract translation: 本公开提供了一种用于通过使用NOx输入测量的方差和NOx输出测量的方差来确定SCR装置的NOx转换效率来估计来自SCR装置的氨输出量的方法和装置，获得 使用NOx转化效率从SCR装置输出NOx，并使用该估计来确定来自SCR装置的氨输出的估计。
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