点火

For adjusting and optimizing spark advance angle of SI engine and improving power density and fuel economy and reducing exhaust emission, an electronic control ignition system applied to GDI engine was developed in this paper.

为了对火花点火发动机的点火提前角进行调整优化，本文开发了一种适用于直喷汽油机的电控点火系统。

In order to improve the operation frequency, the self-suck resonator pulse detonation engine was founded, the ignition principle of the new engine use the method of shock focus autooscillation, so, it possess high ignition and operation frequency, many experts have taken experiment and numerical simulation. However, the physical processes in the resonator cavity are very complicate,the reliable theory haven't set up by now, require the further study.

为了提高脉冲爆震发动机的工作频率，自吸气共振型脉冲爆震发动机模型被提出，该新型发动机点火原理采用激波谐振聚焦点火方式，具有很高的点火及工作频率，许多专家对此进行了实验研究和数值模拟，但由于谐振腔内的物理过程非常复杂，到目前为止没有一套可靠的理论，有待于进一步研究。

Under the current experiment conditions, it is difficult to completely understand the characteristics of laser ignition of energetic materials because of instantaneity and complexity of the process. Thus, researchers attach widespread importance to the method of numerical simulation.

由于含能材料激光点火过程的瞬时性和复杂性，在目前的实验条件下难以全面地了解含能材料的激光点火特性，因此用数值模拟方法来分析含能材料的激光点火特性受到人们的普遍重视。

Flat plate steady mathematical model and non steady symmetric model are presented, the analytical solution of temperature of powder is derived on the basis of non steady symmetric model in spheroidal coordinates with the methods of mathematical transformation and principle of superposition .

对点火问题进行研究，给出了两种点火的数学模型；平板定常模型和球对称非定常模型。从火药颗粒的球对称非定常模型出发，利用叠加原理和数学变换导出了火药颗粒表面温度的分析解。该研究对深入研究点火理论和起始弹道学有一定的作

The trouble of igntion system includes principally the following three respects: preignition, late ignition,miss firing.

点火系统的故障主要表现在三方面：点火过早、点火过晚和不点火。

Agglomeration ignites test result makes clear, temperature of microwave sirocco ignition nods igneous temperature under agglomeration of traditional iron ore far, in temperature of wind of 1.5 min of 8 kw of microwave output power, ignition, warm-up 350 ℃ fall can acquire the agglomeration ore deposit with good target.

烧结点火试验结果表明，微波热风点火温度远远低于传统铁矿烧结点火温度，在微波输出功率8 kw、点火1.5 min、预热风温度350℃下可获得指标良好的烧结矿。

Compared with conventional ignition, plasma ignition has showed some benefits, shorter ignition delay time, enhanced combustion, and ignited consentaneously, and so on.

与常规点火比较，等离子体点火可以缩短点火延迟时间，显著增强燃烧，提高点火一致性和全面性。

Plasma ignition for engine is a new pattern portfire, it firstly lights up the start-up oil and form ignition torch to ignite the main oli in the combustor.lt is a new technolygy,at the present only Ukraine have used this technique in marine gas turbine and the ground gas turbine to increase the reliability of retro fires and extend the concentration limit of retro fires.

等离子点火技术是一门新兴技术，目前只有乌克兰将该技术应用到了舰船燃气轮机和地面燃气轮机上，由于该项技术主要点火设备具有独特的放电特性和较大的放电能量，并且能量集中，使发动机的点火可靠性和点火的浓度极限得到了极大的提高。

Considering the huge increase of Igniting and combustion-supporting oil consumption by power plants, in this article we discussed in detail two oil-saving technologies that have already been generally used.

针对大型发电锅炉点火和助燃耗油量大的问题，着重介绍了目前电厂应用较为广泛的两种节油点火技术－微油点火技术和等离子点火技术。

Considering the huge incxease of igniting and combustion-supporting oil consumption by power plants, in this article we discussed in detail two oil-saving technologies that have already been generally used.

针对大型发电锅炉点火和助燃耗油量大的问题，着重介绍了日前电厂应用较为广泛的两种节油点火技术微油点火技术和等离子点火技术。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。