基于四立柱试验台和特征路面的平顺性分析方法

为了获得在汽车工程开发中更加直接、有效地平顺性分析及试验方法,研究了振动传递特性理论.首先应用1/4车辆振动模型推导传递函数,并对比分析在不同设计参数的结果差异.然后构造不同的特征路面输入工况,采用整车四立柱振动试验台进行实车试验,试验中采集车辆不同位置的加速度信号,用于研究输入输出的传递特性.最终研究了适合于前期仿真...     

影响铁水预脱硫的工艺因素

讨论了铁水包内投入高效脱硫剂，脱硫效率的影响因素，对中小型钢铁企业铁水炉外预脱硫，提高炼钢技术经济指标有较好的参考作用。     

高分子液晶膜的形成及其氧氮渗透性

应用偏光显微镜、扫描电子显微镜、ＤＳＣ以及测定氧氮渗透性，对乙基纤维素液晶溶液和低分子液晶共混膜在电场下取向膜和非取膜的结构和性能进行研究，结果表明：高分子液晶和低分子液晶在电场下的均发生排列取向，渗透系数提高，渗透比稍微降低；各向同性溶液在电场下不发生取向；撤离电场后，发生部分分解取向，解取向程度与ＭＢＨｐＡ的含量和实验温度有磋。     

煤与瓦斯突出的突变学分析

运用突变学理论对煤矿生产中严重的灾害煤与瓦斯突出的突出机理和突出条件进行了定性分析。通过建立煤与瓦斯突出的尖点突变模型,较为直观的对突出的孕育过程和突出过程作出了系统的理论分析,得出了瓦斯突出启动的突变机制和突变条件,从而为煤与瓦斯突出灾害预测与防止提供了新的理论依据。     

碳酸盐对连铸保护渣熔化速度的影响

对碳酸盐影响保护渣熔化速度的能力进行了实验研究,结果表明,促进保护渣熔化的作用顺序为：Ｌｉ２ＣＯ３〉Ｋ２ＣＯ３〉ＣａＣＯ３〉Ｎａ２ＣＯ３。     

Saving and Utilizing on Water Resources from Steel Making

In this espy, the author gives some presentation of the water saving practices in Baosteel for years. Relying on water saving research program and by means of water utilization analysis, water consumption distribution balance test water from every sequence of production activities, Baosteel promotes the waste saving projects including waster water comprehensive utilization and water loss reduction.At the same time, the water utilization technology analysis work and management work have considerably strengthened and operation of saving on fresh water sources and waster water utilization has been put into practice with the purpose to decrease water loss per ton of steel making, while the quality of water is placed under guarantee, a number of new records of water consumption ratio comes into being constantly.     

基于二氧化碳红外热成像的火焰起升高度分析

基于CO_2红外热成像方法拍摄了可控活化热氛围下的正庚烷液滴群预混射流火焰,测量了火焰起升高度,研究了热氛围协流温度、液滴群预混当量比、液滴群射流速度3个因素对起升高度的影响规律.结果表明:射流火焰起升高度主要受到化学着火延迟期控制,起升高度随着协流温度的升高而降低,但当协流温度足够高时,起升高度几乎不再变化;当量比增大会使物理着火延迟期缩短,从而使火焰起升高度降低;在相同的当量比下,如果协流温度较低,射流出口速度增加会提高火焰起升高度,而当协流温度高于某临界温度后,加大射流出口速度却会降低火焰起升高度.     

混合动力与燃料电池汽车节油与替代效果分析

以上海市为案例,从出租车、公交巴士、私人轿车着手,通过理论计算,分析和预测混合动力汽车和燃料电池汽车等新能源汽车节油效果和替代效果,为上海市"十一五"末期达到交通行业能源消耗大幅降低的目标提供分析依据.     

空燃比对离子电流信号的影响机理

在一台高压定容燃烧弹上,以甲烷为燃料,研究了空燃比对离子电流信号的影响.结果表明,当过量空气系数为0.90时,离子电流信号峰值最大,峰值时刻最为提前.通过建立甲烷预混离子反应机理模型,对离子形成过程、浓度及分布情况进行了数值模拟,结果表明,化学电离发生在火焰前锋面,最主要的离子产物为H3O~+,热电离发生在焰后高温区,最主要的离子产物为NO~+.化学反应路径分析表明,当过量空气系数为0.90时,H3O~+和NO~+的净生成速率最大,浓度最高,化学电离峰和热电离峰值最大.     

Study on characteristics of controllable active thermo-atmosphere of a vitiated coflow combustor

Turbulent combustion remains to be one of most complicated technologies due to the complexities of turbulence and combustion as well as the interaction of both.This paper presents a vitiated cofiow combustor, which is newly used for the fundamental research into turbulent combustion. The characteristics of controllable active thermo-atmosphere (CATA) of a vitiated coflow combustor are investigated. The results show that the oxygen mole frac tion of vitiated coflow flames between 0% and 21% yield coflow temperature between 700 and 1500 K, and there is a constant temperature space as a cylinder with a radius of 40mm. These features of the vitiated coflow indicate the existence of a controllable active thermo-atmosphere, which benefits the basic study on the autoignition of a combustible mixture in a homogeneous charge compression ignition (HCCI) combustion.