Cycle by cycle NOx model for diesel engine control

被引：37

作者：

Guardiola, C. ^{[1
]}

Martin, J. ^{[1
]}

Pla, B. ^{[1
]}

Bares, P. ^{[1
]}

机构：

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

来源：

APPLIED THERMAL ENGINEERING | 2017年 / 110卷

关键词：

Reciprocrating engines; NOx; Trapped mass; Adiabatic flame temperature; Resonance; CYLINDER PRESSURE; COMBUSTION; EMISSIONS; METHODOLOGY; RELEASE; PEMS;

D O I：

10.1016/j.applthermaleng.2016.08.170

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents a model for on-line NOx estimation. The method uses both, low frequency components and high frequency components of in-cylinder pressure signal: it harnesses in-cylinder pressure resonance to estimate the trapped mass, and based on this measurement, a NOx model is adapted to estimate NOx emissions cycle by cycle. In addition of the in-cylinder pressure signal, the procedure only requires from lambda and air mass flow to estimate NOx, so it can give a direct estimation of NOx or improve transient response and aging of current NOx sensors. The method was validated on a CI engine with high pressure EGR loop under steady and transient conditions showing errors below 10% and cycle by cycle time response. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1011 / 1020

页数：10

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