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Second law analysis of premixed compression ignition combustion in a diesel engine using a thermodynamic engine cycle simulation

机译：基于热力学循环仿真的柴油机预混压缩点火燃烧第二定律分析

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摘要

A second law analysis of compression ignition engine was completed using a thermodynamic engine cycle simulation. The major components of availability destruction and transfer for an entire engine cycle were identified and the influence of mode of combustion, injection timing and EGR on availability balance was evaluated.The simulation pressure data was matched with the available experimental pressure data gathered from the tests on the Isuzu 1.7 L direct injection diesel engine. Various input parameters of the simulation were changed to represent actual engine conditions.Availability destruction due to combustion decreases with advanced injection timing and under premixed compression ignition (PCI) modes; but it is found to be insensitive to the level of EGR. Similarly, trends (or lack of trends) in the other components of availability balance were identified for variation in injection timing, EGR level and mode of combustion. Optimum strategy for efficient combustion processes was proposed based on the observed trends.
机译：压缩点火发动机的第二定律分析使用热力学发动机循环仿真完成。确定了整个发动机循环过程中可用性破坏和传递的主要组成部分，并评估了燃烧方式，喷射正时和EGR对可用性平衡的影响。模拟压力数据与从测试获得的可用实验压力数据相匹配五十铃1.7升直喷柴油发动机。更改了模拟的各种输入参数以代表实际发动机状况。由于提前喷射正时和在预混合压缩点火（PCI）模式下，燃烧引起的可用性破坏减少；但是发现它对EGR的水平不敏感。类似地，确定可用性平衡的其他组成部分中的趋势（或缺乏趋势），以改变喷射正时，EGR水平和燃烧方式。根据观察到的趋势，提出了有效燃烧过程的最佳策略。

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    Oak Sushil Shreekant;

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  • 年度 2008
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