燃用轻油基燃料的火花点火式发动机性能分析

Performance Analysis of the Spark Ignition Engines with Light Oil-Based Fuel

轻油高辛烷值调和剂显著提高了轻油基燃料的抗爆性 ,使火花点火式发动机可采用较高压缩比工作。发动机燃用轻油基燃料时无爆震 ,可获得与燃用汽油相近、甚至更高的动力性及经济性。发动机缸内过程参数及其标准偏差分析表明 :发动机燃用轻油基燃料时 ,最高燃烧压力和最大压力升高率及其标准偏差明显低于燃用汽油 ;最大压力升高率均出现于最高燃烧压力点之前。从而证明 ,轻油基燃料具有较好的抗爆性 。

WT5”BZ] The additive with high octane number to light oil improves the quality of light oil based fuel greatly.The spark ignition engine using light oil based fuel can operate with high compression ratio,and the power and economy performance can reach or surpass the level of that using gasoline.The parameter analysis of the process in cylinder for light oil based fuel in spark ignition engine proves:(1)The standard deviation of the peak pressure,the maximum rates of pressure rise,and process parameters in cylinder are less than those with gasoline;(2)The maximum rates of pressure rise occurs before the peak pressure.It proves that the light oil based fuel has good antiknock property and good quality. [WT5”HZ]