滑阀式压缩空气发动机实验研究

发布时间：2018-05-06 01:37

本文选题：气动发动机 + 滑阀　；参考：《液压与气动》2016年05期

【摘要】：为优化气动发动机设计,提高气动发动机的工作性能,在一台由四冲程汽油机改装的二冲程气动发动机上进行了详细的台架试验。提出一个评价气动发动机性能的新指标——气动发动机平均有效压力和缸内平均压力的比值。采用钢、铝和尼龙三种材料制作相同尺寸的配气滑块进行试验,结果表明配气滑块的质量,对气动发动机动力性有影响。对进气持续角为128°、143°和156°的尼龙材料配气滑块进行试验,试验结果表明增大进气持续角可以提高压缩空气的膨胀效率。在三种不同压缩比的状况下进行了气动发动机试验。试验证明在传统内燃机的基础上改装气动发动机时,增大发动机压缩比,会降低压缩空气的膨胀效率。
[Abstract]:In order to optimize the design of the pneumatic engine and improve the performance of the engine, a detailed bench test was carried out on a two-stroke pneumatic engine modified from a four-stroke gasoline engine. A new index to evaluate the performance of a pneumatic engine, the ratio of the average effective pressure of the pneumatic engine to the average pressure in the cylinder, is presented. Three kinds of materials, steel, aluminum and nylon, were used to make the same size air distribution slider. The results show that the quality of the valve distribution slider has an effect on the aerodynamic performance of the pneumatic engine. The experimental results of nylon material sliders with inlet air duration angles of 128 掳, 143 掳and 156 掳show that the expansion efficiency of compressed air can be improved by increasing the intake air persistence angle. Aerodynamic engine tests were carried out under three different compression ratios. It is proved that the expansion efficiency of compressed air can be reduced by increasing the compression ratio of the engine when the pneumatic engine is refitted on the basis of the traditional internal combustion engine.
【作者单位】：太原理工大学机械工程学院;
【基金】：山西省归国留学人员科研基金(2013-040)
【分类号】：U467.2

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