搜索结果: 1-13 共查到“动力机械工程 diesel engine”相关记录13条 . 查询时间(0.062 秒)
Effect of Exhaust Gas Recirculation (EGR) on the Performance and Emission Characteristics of Diesel Engine with Sunflower Oil Methyl Ester
Emission Exhaustgas Recirculation Sunflower Oil
2010/1/15
Transesterified fuels (biodiesel) from vegetable oils are alternative fuels for diesel engines. They are renewable and offer potential reduction in CO and HC emissions due to higher O2 contents in veg...
The influence of the engine load on value and temperature distribution in the piston of the turbocharged Diesel engine
Numerical techniques Heat loads Piston
2009/12/14
Purpose: The determination of the temperature distribution in the piston in initial phase of the work of the turbocharged Diesel engine.
Design/methodology/approach: The results of calculations of th...
PARTICULATE MATTERS FROM DIESEL ENGINE EXHAUST EMISSION
engine emissions diesel engine particulate matters
2009/10/14
Air pollution caused by diesel engine emissions, especially particulate matters and nitric oxides emissions, is one of the biggest problems of current transportation. In the near future the emission o...
INFLUENCE OF DISTILLATION ON PERFORMANCE, EMISSION, AND COMBUSTION OF A DI DIESEL ENGINE, USING TYRE PYROLYSIS OIL DIESEL BLENDS
diesel fuel tyre pyrolysis oil hydrocarbon
2009/10/14
Conversion of waste to energy is one of the recent trends in minimising not only the waste disposal but also could be used as an alternate fuel for internal combustion engines. Fuels like wood pyrolys...
COMBUSTION AND EMISSION CHARACTERISTICS OF DIESEL ENGINE FUELLED WITH RICE BRAN OIL METHYL ESTER AND ITS DIESEL BLENDS
diesel engine biodiesel performance
2009/10/14
There has been a worldwide interest in searching for alternatives to petroleum-derived fuels due to their depletion as well as due to the concern for the environment. Vegetable oils have capability to...
Experimental Analysis of the Effects of Fuel Injection Pressure and Fuel Cetane Number on Direct Injection Diesel Engine Emissions
Diesel engine Injection pressure Emission Cetane number
2009/10/12
The e ects of di erent fuel cetane numbers and fuel injection pressures on a diesel engine emission were investigated. For this purpose, fuels with 46, 51, 54.5 and 61.5 cetane numbers were tested in ...
Comparision of Diesel Engine Performance and Emissions from Neat and Transesterified Cotton Seed Oil
Bio-Diesel Transesterification Cottonseed Oil Methyl Ester
2010/1/15
There is an increasing interest in India to search for suitable alternative fuels that are environmental friendly. Environmental concerns and limited amount of petroleum resources have caused interest...
车用柴油机机体有限元分析与设计（Finite Element Analysis and Structural Design of Vehicle Diesel Engine Block）
柴油机 机体 有限元分析 结构设计
2009/9/2
对某车用柴油机机体进行了三维实体建模和网格划分，采用有限元整体分析与子模型分析相结合技术，以ABAQUS为平台进行机体强度有限元分析，确定了气缸体应力集中部位，提出机体结构改进方案。在此基础上，应用MSC.Fatigue软件对改进前后的水套根部子模型进行疲劳强度分析，结合应力测试实验验证改进效果。实验结果表明，气缸体加筋改进后，水套根部交接位置应力降低11%～46%。
共轨柴油机燃用生物柴油限制与非限制排放特性（Characteristics of Regulated and Unregulated Emissions of Biodiesel Blends in a Common Rail Diesel Engine）
生物柴油 高压共轨柴油机 排放特性
2009/9/2
在高压共轨柴油机上对生物柴油混合燃料（源自食用废油）的排放物进行了研究。结果表明，限制性气体排放中，随着生物柴油混合比例的增加，NOx的排放量明显升高，同时在氧化催化器后NOx中的NO2体积分数也逐步增大；烟度则随着燃料混合比例的增加呈线性下降。非限制性气体排放中，外特性工况下的生物柴油混合燃料的乙醛排放量随混合比的增加而降低；SO2气体排放量也随着燃料混合比例的增加逐步下降，纯生物柴油可降低20...
甲醇柴油与生物柴油微粒排放粒径分布特性（Particle Size Distribution of Particulate Matter Emission from the Diesel Engine Burning Methanol-diesel Fuel and Biodiesel）
柴油机 甲醇柴油 生物柴油 微粒
2009/9/2
以石化柴油为参照，在发动机台架上，采用电子低压冲击仪及其附带的两级稀释系统测试了燃用柴油、甲醇柴油和生物柴油排放的不同粒径微粒的数量浓度、体积浓度，分析了发动机转速、负荷以及燃油种类对微粒粒径分布的影响。试验证明：在外特性下，柴油、甲醇柴油排放的微粒数量浓度随转速增大而增加，生物柴油排放的微粒数量浓度随转速没有明显变化规律；在2300r/min，生物柴油和柴油随负荷的减小排放的微粒数量浓度增加；标...
柴油机缸内工作过程的数值模拟（Numerical Simulation of Working Process in the Cylinder of Diesel Engine）
柴油机 工作过程 多维
2009/5/22
利用CFD软件AVL_Fire对YD490ZL型柴油机进气、压缩、燃烧过程进行了多维瞬态数值模拟。通过对柴油机工作过程中不同时刻气体流动、壁面传热、燃油喷雾雾化、颗粒形成等因素的分析，结果认为适当调整燃烧室中心相对气缸中心在X方向的距离，可以使燃烧更加充分、提高柴油机的燃油经济性；燃烧室换热系数不仅随空间位置变化，而且还随时间变化而各不相同，通过这种多维瞬态计算能够提供不同时刻、不同位置的换热系数...
柴油机功率强化前后气缸盖的温度场模拟与试验（Simulation and Experiment of Temperature Field on Diesel Engine Cylinder Head before and after Enhancement of Power）
柴油机 气缸盖 温度场
2009/5/22
对功率强化前后的柴油机分别进行了性能仿真计算，进而确定了缸盖温度场计算的边界条件；利用有限元软件对气缸盖进行三维稳态热分析，并考虑了冷却水沸腾换热的影响；在该柴油机的单缸试验机上进行了稳态温度场测量试验，分析了试验和计算结果；得到了火力面边界条件的设置规律、稳态温度场随工况的变化关系和单缸机与多缸机的稳态温度场差别。
Determination of the temperature distribution in the wet cylinder sleeve in turbo diesel engine
Numerical techniques Heat loads of the wet cylinder sleeve FEM
2010/2/8
Purpose: The determination of the temperature distribution in the wet cylinder sleeve in initial phase of the work of turbo Diesel engine.Design/methodology/approach: The results of calculations of th...