CLC number: TK421.5
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2019-03-19
Cited: 0
Clicked: 6049
Citations: Bibtex RefMan EndNote GB/T7714
Yan-xiang Yang, Bing-qian Tan, Chang-wen Liu, Ping Zhang, Qi-jiang Le, Ben-xi Zhang. A T3 metering theory used for diesel exhaust fluid dosing and failure diagnosis in selective catalyst reduction dosing systems[J]. Journal of Zhejiang University Science A, 2019, 20(5): 334-346.
@article{title="A T3 metering theory used for diesel exhaust fluid dosing and failure diagnosis in selective catalyst reduction dosing systems",
author="Yan-xiang Yang, Bing-qian Tan, Chang-wen Liu, Ping Zhang, Qi-jiang Le, Ben-xi Zhang",
journal="Journal of Zhejiang University Science A",
volume="20",
number="5",
pages="334-346",
year="2019",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1800518"
}
%0 Journal Article
%T A T3 metering theory used for diesel exhaust fluid dosing and failure diagnosis in selective catalyst reduction dosing systems
%A Yan-xiang Yang
%A Bing-qian Tan
%A Chang-wen Liu
%A Ping Zhang
%A Qi-jiang Le
%A Ben-xi Zhang
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 5
%P 334-346
%@ 1673-565X
%D 2019
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1800518
TY - JOUR
T1 - A T3 metering theory used for diesel exhaust fluid dosing and failure diagnosis in selective catalyst reduction dosing systems
A1 - Yan-xiang Yang
A1 - Bing-qian Tan
A1 - Chang-wen Liu
A1 - Ping Zhang
A1 - Qi-jiang Le
A1 - Ben-xi Zhang
J0 - Journal of Zhejiang University Science A
VL - 20
IS - 5
SP - 334
EP - 346
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1800518
Abstract: In this paper, a new dosing unit is presented for diesel exhaust fluid (DEF) dosing in combustion engine exhaust emission selective catalyst reduction (SCR) systems. The dosing unit is a plunger-sleeve pump nozzle system driven by a charged solenoid, and is pump-end controlled by pulse width modulation (PWM) signals. The core characteristics of the unit include both metering precision control and failure diagnosis methods. In this study, both physical-mathematical analysis and experiments were carried out. A so-called whole state t3 metering theory was developed by studying the system using a physical-mathematical model based on energy conservation. The study showed that the liquid discharge, which is associated with the plunger-sleeve relative position, correlates well with a measurable variable T3. Experimental investigations verified that the metering results were independent of the state variations in some range and that metering is controlled with high precision. Two typical DEF dosing systems based on the dosing unit and some specific failure modes are introduced. Significant variation of the parameter T3 in the T3 model is useful for the detection of specific failure modes.
This manuscript presents a model-based theory used for DEF dosing and failure diagnosis in SCR dosing system. The investigation is based on a plunger-sleeve pump nozzle system which is used for SCR. A measurable variable T3 can be well correlated with DEF amount in this paper. Moreover, the significant variation of parameter T3 in T3 model is also available for failure detection for this dosing unit. This manuscript elaborates the whole process of the modeling, which will be beneficial for future research.
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