A reduced combustion kinetic model for the methanol-gasoline blended fuels on SI engines.

被引：0

作者：

LING XinChen ^{[1
]}

WU Feng ^{[1
]}

YAO DongWei ^{[1
]}

机构：

[1] Power Machinery & Vehicular Engineering Institute, Zhejiang University

来源：

Science China(Technological Sciences) | 2016年 / 01期

基金：

中国国家自然科学基金;

关键词：

Methanol-gasoline; chemical mechanism; SI engine; CFD simulation;

D O I：

暂无

中图分类号：

TK46 [其他燃料的内燃机];

学科分类号：

080703 ;

摘要：

A reduced combustion kinetic model for the methanol-gasoline blended fuels for SI engines was developed. Sensitivity analysis and rate constant variation methods were used to optimize the kinetic model. Flame propagation, shock-tube and jet-stirred reactor systems were modeled in CHEMKIN. The laminar flame speed, ignition delay time and change in concentrations of species were simulated using the reduced kinetic model. The simulation results of reduced chemical mechanism agreed well with the relevant experimental data published in the literature. The experimental investigations on engine bench were also carried out. The in-cylinder pressure and exhaust emissions were obtained by using a combustion analyzer and an FTIR(Fourier transform infrared spectroscopy) spectrometer. Meanwhile, an engine in-cylinder CFD model was established in AVL FIRE and was coupled with the proposed reduced chemical mechanism to simulate the combustion process of methanol-gasoline blends. The simulated combustion process showed good agreement with the engine experimental results and the predicted emissions were found to be in accordance with the FTIR results.

引用

页码：81 / 92

页数：12

共 34 条

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