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The second law analysis of a spark ignition engine fueled with compressed natural gas.

机译:用压缩天然气为燃料的火花点火发动机的第二定律分析。

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摘要

This thesis presents a fundamental thermodynamic modeling approach to study internal combustion engines. The computations of the thermodynamic functions, especially availability, have been developed to seek better energy utilization, analyze engine performance and optimize design of spark ignition (SI) engines fueled with compressed natural gas (CNG), by using both the first and the second law analyses.; A single-zone heat release model with constant thermodynamic properties is built into the air cycle simulation, while a more comprehensive two-zone combustion model with burning rate as a sinusoidal function of crank angle is built into the fuel/air thermodynamic engine cycle simulation. The computations mainly include pressure, unburned and burned zone temperature, indicated work, heat loss, mass blowby, availability destruction due to combustion, fuel chemical availability, availability transfer with heat, availability transfer with work and availability exhaust to the environment. The validation of the simulation results with the experimental data is performed for a DaimlerChrysler 4.7 Liter CNG fueled V8 engine at wide open throttle (WOT), and 4000 rpm. (Abstract shortened by UMI.)
机译:本文提出了一种基本的热力学建模方法来研究内燃机。通过使用第一定律和第二定律,已经开发出热力学函数的计算,尤其是可用性,以寻求更好的能源利用,分析发动机性能并优化使用压缩天然气(CNG)的火花点火(SI)发动机的设计。分析。在空气循环模拟中建立了具有恒定热力学特性的单区域放热模型,而在燃料/空气热力发动机循环模拟中建立了以燃烧率作为曲轴转角正弦函数的更全面的两区域燃烧模型。计算主要包括压力,未燃烧区域和燃烧区域的温度,指示功,热损失,漏气,燃烧引起的可用性破坏,燃料化学可用性,热量的可用性传递,工作的可用性传递以及对环境的可用性排放。用戴姆勒克莱斯勒4.7升CNG燃料的V8 V8发动机在全开节气门(WOT)和4000 rpm转速下对实验结果进行仿真结果验证。 (摘要由UMI缩短。)

著录项

  • 作者

    Zhang, Shengmei.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2002
  • 页码 138 p.
  • 总页数 138
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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