公开(公告)号：US20150143884A1

公开(公告)日：2015-05-28

申请号：US14403090

申请日：2013-06-20

Applicant: Perkins Engines Company Limited

Inventor： David Heaton ,  Michail Soumelidis ,  Bastian Maass ,  Thomas Steffen

IPC: F01N3/20 ,  G01M15/10

CPC classification number: F01N3/2066 ,  F01N3/208 ,  F01N11/007 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/0411 ,  F01N2900/0416 ,  F01N2900/0601 ,  F01N2900/1402 ,  G01M15/102 ,  Y02A50/2325 ,  Y02C20/10 ,  Y02T10/24 ,  Y02T10/47

Abstract: A method for determining if a selective catalytic reduction (SCR) device that is dosed with a reductant is being mis-dosed by considering an expected exhaust gas output state from the SCR device and measured exhaust gas output state, a NOx sensor sensitivity figure that is an indication of how sensitive the measured exhaust gas output state is to dosing errors and performing cross-correlation operations.

Abstract translation: 通过考虑来自SCR装置的预期排气输出状态和测量的废气输出状态来确定是否配备有还原剂的选择性催化还原（SCR）装置的错误计算方法，即NOx传感器灵敏度图 测量的排气输出状态对给定误差和执行互相关操作的敏感度的指示。