An on-engine method for dynamic characterisation of NOx concentration sensors

被引：13

作者：

Galindo, J. ^{[1
]}

Serrano, J. R. ^{[1
]}

Guardiola, C. ^{[1
]}

Blanco-Rodriguez, D. ^{[1
]}

Cuadrado, I. G. ^{[2
]}

机构：

[1] Univ Politecn Valencia, CMT Motores Term, E-46022 Valencia, Spain

[2] Univ Rovira & Virgili, CREVER Grp Appl Thermal Engn, Dept Mech Engn, Tarragona 43007, Spain

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2011年 / 35卷 / 03期

关键词：

Combustion engine; NOx; ZrO2; sensor; SOI; Measurement techniques; Sensor calibration; On-board diagnostics; EXHAUST-GAS SENSORS; EMISSIONS; CYCLE;

D O I：

10.1016/j.expthermflusci.2010.11.010

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An on-engine method for dynamic characterisation of automotive NOx concentration sensors is presented. Steps in start of injection on a diesel engine are employed to achieve step-like NOx concentration variations on exhaust flow. On the basis of the sensor response, delay and dynamic response can be easily identified; the paper shows a simple least squares procedure although other models and identification techniques could be used. Application data is presented for three NOx sensors: a research-grade chemiluminescence exhaust gas analyser, and two different commercial ZrO2-based sensors. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：470 / 476

页数：7

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