分析了有机硝酸酯缩短着火滞燃期的机理。
The chemical kinetic mechanism of organic nitrate for shortening ignition delay is analyzed.
柴油机气缸内滞燃期的确定具有很大的意义。
It is very significant to define the ignition delay in the cylinder of Diesel Engines.
随压缩比的降低，滞燃期延长，HC排放明显增加。
With the decrease of compress ratio, HC emissions were increased and the ignition delay was prolonged.
着火滞燃期和燃烧持续期随着压力的提高明显缩短。
High pressure can significantly reduce the ignition delay and combustion period.
喷油提前较多的情况下，喷油定时对滞燃期几乎没有影响。
Injection timing has small effect on ignition delay in the case of earlier injection.
对气缸内参数的分析表明，滞燃期缩短，最高燃烧压力降低，燃烧过程较为柔和。
The analysis of combustion parameters in cylinder shows that the ignition delay reduces, peak combustion pressure decreased and combustion process becomes more smooth.
通过对燃烧特征参数的计算分析，发现生物柴油的燃烧始点有所提前，滞燃期缩短；
The results show that the start timing of combustion is advanced and the ignition delay period is shortened.
在对定容燃烧弹内火焰进行拍摄分析的基础上，研究生物添加剂对滞燃期，火焰传播的影响。
In this dissertation, based on analysis for the combustion in a constant volume combustion bomb, the parameters such as combustion delay period, combustion-flame propagation have been investigated.
传感器检出的信号送入信号处理电路后，经滤波、放大、整形及合成，成为等效于滞燃期的数字脉冲信号。
The signal read out of the sensor is to be filtered, amplified, shaped and synthesized and then transformed into a digital pulse one, which is equivalent to the ignition time delay.
提高进气压力由于进气温度的影响使滞燃期缩短，大EGR率尤其明显，导致碳烟峰值随进气压力升高而增大。
The ignition delay was shortened by increase intake pressure due to higher intake temperature, which resulted in higher smoke, and this phenomenon was more obvious at high EGR rate situation.
十六烷值改进剂受热容易分解产生活性自由基、降低了柴油的自燃点，从而缩短了滞燃期，改善了发动机的燃烧性能。
The free radicals can reduce spontaneous combustion temperature of diesel fuel greatly and shorten the ignition delay period, and thus improve the combustion performance of diesel engine.
结果表明，随着生物柴油体积分数的增加，滞燃期呈现先减小后增大的趋势，但所有混合燃料的滞燃期都低于普通柴油。
The results show that with the increase of the biodiesel concentration, ignition delays of blend fuels decrease at first and then increase, but all the delays are shorter than that of diesel.
基于甲醇、异辛烷和正庚烷的详细化学动力学机理，对甲醇、异辛烷、正庚烷及其构成的混合燃料的滞燃期进行了计算研究。
The ignition delay periods of methanol, isooctane, n-heptane and their blended fuel were studied based on their detailed chemical kinetic mechanism.
结果表明：与柴油相比，发动机燃用二甲醚时的喷油延迟期延长，滞燃期缩短，最高爆发压力和最大压力升高率均低于柴油机。
The results show that DME operation has longer injection delay, lower maximum cylinder pressure, lower ratio of pressure rise, shorter ignition delay in comparison with diesel operation.
十六烷值改进剂受热分解产生活性自由基，使得柴油的自燃活化能大大降低，从而缩短发动机燃烧的滞燃期，改善发动机的燃烧性能。
The free radicals can make spontaneous combustion activation energy of diesel fuel reduced greatly and shorten the ignition delay period, and thus improve the combustion performance of diesel engine.
十六烷值改进剂受热分解产生活性自由基，使得柴油的自燃活化能大大降低，从而缩短发动机燃烧的滞燃期，改善发动机的燃烧性能。
The free radicals can make spontaneous combustion activation energy of diesel fuel reduced greatly and shorten the ignition delay period, and thus improve the combustion performance of diesel engine.
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