Hyundai-Kia公司新型2.0L和2.2L4缸柴油机系列

2.2 L柴油机是Hyundai-Kia公司新R系列中第1款满足欧5排放标准的机型,该机以66kw/L和200(N·m)/L达到了单级增压柴油机比功率和比扭矩的最高值,使其动力总成在达到低噪声和低燃油耗的同时具有运动车型的行驶功率,并被批量搭载于Kia Sorento轿车和Hyundai SantaFe轿车.     

采用沿岸动力概念以减少埃及红海海域高速船燃料消耗与降低排放(英文)

The progress of economic globalization,the rapid growth of international trade,and the maritime transportation has played an increasingly significant role in the international supply chain.As a result,worldwide seaports have suffered from a central problem,which appears in the form of massive amounts of fuel consumed and exhaust gas fumes emitted from the ships while berthed.Many ports have taken the necessary precautions to overcome this problem,while others still suffer due to the presence of technical and financial constraints.In this paper,the barriers,interconnection standards,rules,regulations,power sources,and economic and environmental analysis related to ships,shore-side power were studied in efforts to find a solution to overcome his problem.As a case study,this paper investigates the practicability,costs and benefits of switching from onboard ship auxiliary engines to shore-side power connection for high-speed crafts called Alkahera while berthed at the port of Safaga,Egypt.The results provide the national electricity grid concept as the best economical selection with 49.03 percent of annual cost saving.Moreover,environmentally,it could achieve an annual reduction in exhaust gas emissions of CO2,CO,NOx,P.M,and SO2by 276,2.32,18.87,0.825 and 3.84 tons,respectively.     

Potential Health and Safety Hazards of Marine Lubricants

1. Introduction Marine lubricants are generally formulated from highly refined mineral oils and special additive systems; a limited number of products Within the range utilize synthetic base oil (Morrison and Boyd, 1969). To ensure health and safty when using any petroleum product it is essential that: ●it is used only for the purposes for which it is intended, ●it is safety and hygiere conditions are observed. Health and safety aspects which is intended to assist the management of shipping companies to ensure that all personnel coming into direct contact With lubricants are familiar with the potential hazards associated With them,     

利用气缸盖与进气歧管集成实现动力装置 小型化和轻量化的模拟研究

商用车发动机要实现下一代严格排放与燃油经济性的目标,需要对内燃机的各个方面进行严格优化。从本质上来说,内燃机的效率是非常低的,效率范围仅为18%~40%。该效率范围是摩擦损失、泵气损失和废热共同作用的结果。目前,全球的汽车制造商都在通过各种途径努力解决这些问题,以期提高效率。其主要发展趋势是在更小的空间获得更高的功率,即发动机小型化,以及由此带来的发动机轻量化。设备制造商(OEM)正在挑战极限,使每升燃油行驶更多里程     

使用耦合电感器为新型燃料电池车开发燃料电池升压转换器

目前开发了用于新型燃料电池车（FCV）的电池电压控制单元（FCVCU）。为了缩小电力传动系统尺寸并增加驱动电机功率，需要FCVCU将燃料电池组提供的电压输送到驱动电机。FCVCU电路配置有4个单相斩波电路，平行排列形成四相交错电路。智能功率模块（IPM）是一种完整的碳化硅（SiC）IPM，这是在量产车中首款使用的功率模块，通过增加频率效应缩小设备的尺寸和被动部件损失，从而提高效率。此外，IPM使用耦合电感器来缩小电感器尺寸。结果，与先前的电压控制单元（VCU）电感器相比，每单位功率的电感器体积减少了约30％。该控制装置决定了FCVCU的输入电流和升压速率降低损耗的工作相位数，根据输入电流切换工作相位数，执行驱动相位切换控制，有助于提高VCU的效率。与传统技术相比，这些技术的采用让FCVCU体积尺寸减少了约40％，并且让动力系统安装在前舱罩下的操作更容易实现。     

高架索海上补给装置—在航行补给系统中应用独特的HST高架索以传送燃料、装备和武器

战斗舰艇在装备、食物被消耗,而仍须停留在海上给定位置时,为了补给作业,供给船必须驶至距离战斗舰艇60～200英尺之内(常常处在不利的气侯和海情下)。补给系统利用液压传动绞车与相关的钢索组合,来进行两船之间补给品的输送。所有各类装备、燃料、武器甚至人员,都是在两船航行状态下,跨过水     

用车辆试验台试验结果估计车辆参数

介绍利用车辆试验台的试验结果估计参数的方法及结果。如何利用车辆模型和参数估计值来模拟运行时的车辆，预计能在车辆动力学性能方面获得较精确的结果。     

氢同位素在Pd-Al2O3颗粒上的吸附速率和吸附量

通过模压方法制备出一种特殊的Pd-Al2O3颗粒，作为氢同位素的分离材料，它含有较高重量成分的金属钯。采用测容积的方法确定了氢同位素系统中Pd-Al2O3的压力．组成等温线和压力平高线。甚至在196K温度下颗粒都具有很高的氢吸附能力，反应速率由表面反应控制。通过增加Al2O3，Pd-H体系的氢吸附容量和吸附速率是不变的。并发现Pd-Al2O3颗粒在反复的吸附．脱附循环中具有很高的耐用能力。在高达1000次的吸附．脱附循环中，吸附量和吸附速率并没有变化。