着火时间

计算结果表明，在某些温度范围内，H2O、O、H、OH和NO对着火时间有很大影响。

The results indicate that the presence of H2 , NO , O , H and OH can have significant effect on ignition time within certain mixture temperature .

在实验条件下，着火时间随着流速的增加先减少后增加，着火温度随着气体流量的增加而增加。

Ignition time first decreases and increases with the increasing of gas flux while the ignition temperature always increases .

但HCCI燃烧存在运转范围窄、着火时间和放热率不好控制等缺点，具体实施上还有许多困难。

The control of auto-ignition time and heat release rate is the most difficult technical question in realizing HCCI combustion .

炉膛温度对扁球状型煤着火时间影响的实验研究

Experimental Study on Influence of Furnace Temperature on Ignition Delay Time of Briquette

结果表明，随着辐射热能流率的增加，着火时间缩短，着火温度降低；

The ignition temperature and ignition delay time decreased with the increasing radiant heat flux .

线性热流下可燃物着火时间的积分法预测

Predicting the Ignition Time of Combustibles Exposed to a Linear Heat Flux via an Integral Method

在突发的火灾过程中，可燃性固体材料的着火时间和热解特性是非常关键的参数。

The pyrolysis and ignition of combustible materials are important processes taking place in an unwanted fire .

当其他条件确定以后，着火时间和燃烬时间随流化床温度的变化而平滑变化。

When the enviroment condition is defined , the ignition and burnout time has a smooth shift with initial bed temperature .

在可模拟链条炉中燃烧过程的热态实验台上，研究了块粒型煤的着火时间。

The ignition delay time was studied on the hot position bench that could stimulate combustion process of traveling grate furnace .

结果表明该模拟能准确预测着火时间，并能合理预测缸内压力峰值和NO浓度变化趋势。

The results showed that the simulation could accurately predict the start of combustion and reasonably estimate the peak cylinder pressure and concentration of NOx emission .

柴油喷射提前角决定了混合燃烧系统的着火时间，对混合燃烧系统的性能尤其是工作粗暴性的影响极大。

The diesel injection timing has a very important effect on the hybrid combustion engine ( especially on knock ), because it determines the ignition time .

在木纹方向与作用方向呈π/4夹角时，着火延迟时间最短。

When their included angle is π / 4 , the ignition delay time is the shortest .

挂滴法的实验结果与凝固模型较接近，水分的加入使液滴表面温度、燃料浓度明显下降，从而使着火延迟时间变长。

The temperature and fuel concentration on the surface decline by adding water in fuel and consequently prolong the ignition delay .

同样外部热源作用下，木材内部木纹方向垂直于作用方向时，着火延迟时间最长；

Under the action of a same heat source , when the direction of grain is perpendicular to the direction of the action , the ignition delay time is the longest .

测量了着火延迟时间和燃烧时间，分析了氛围气温度、油滴直径、乳化剂添加率以及水添加率等因素对着火延迟、燃烧时间及微爆炸过程的影响。

The effects of following parameters : the temperature of ambient , the diameter of droplet , the ratio of water to oil and the ratio of surfactant to the emulsions on the occurrence of micro explosion , the times of ignition delay and combustion duration were investigated .

结果表明：该方法重现性好，煤焦中含灰越高，着火所需时间越长。

The results show that these methods have good reproducibility , the more ash the char contains , the kindling point is higher and the time for ignition is longer .

具有相近着火点的煤焦，着火所需时间却不一样，说明仅用煤的工业分析来评价煤质的优劣是不科学的。

Although there are similar kindling point and industrial analysis value of two kinds of chars , the time for ignition is different , illustrating that it is unscientific to evaluate coal quality only by the industrial analysis .

通过数值模拟，研究了煤粉浓度与颗粒群的着火方式、着火时间和着火温度等的关系。

Correlations of coal concentration with the ignition mode , ignition time and ignition temperature of the cloud are predicated by numerical modelling .

掺加造纸废液后，成型燃料易着火，但燃烧时间较长，不会增加成型燃料的灰分。

Adding pulping waste liquor could lower the ignition temperatuer , but increased the burning time . It had no influence on the ash content of the briquettes .

在二甲醚中加入着火抑制剂，可以有效地推迟着火时间，控制燃烧始点；所谓时滞是指信号传输的延迟。

When the ignition inhibitor is added into DME , it can retard the start of ignition and then control the start of combustion . Time delay is retard of signal transmission .

试验结果表明：随着氧的体积分数的增大，煤样的着火温度及燃尽温度均呈下降趋势，着火时间提前，燃烧时间缩短，煤粉的综合燃烧特性指数提高；

The larger the oxygen content is , the lower the igniting temperature and the burnout temperature are , and the greater the integration index of combustion characteristics is .

本文首先研究了镁在水蒸气中的着火机理及模型，在高温管式炉中考察了加热速率、水蒸气浓度和粒径等因素，对镁颗粒着火温度和着火延迟时间的影响规律。

The effects of heating rate , steam concentration and particle diameter on ignition temperature and ignition delay time of magnesium in steam were studied by tube reactor .