Effects of air swirl intensity on atomization and combustion performance of effervescent atomized spray were investigated under different conditions. 对不同空气旋流强度下气泡雾化喷嘴出口下游喷雾流场特性及燃烧特行进行了诊断与分析。
And also Ricardo method for the air flow coefficient, the swirl and tumble evaluation is one of the mostly used methods in the world. 同时,里卡多对于空气流通系数和涡流,滚流的评估方法是世界上使用最多的几种方法之一。
Simulation of the Effects of the Connecting Passage on Air Flow Field in the Swirl Chamber 发动机涡流室连接通道对空气流场影响的模拟研究
The engine testing results showed that the nozzles used on engine with swirl combustion chamber could reduce fuel consumption and smoke e-mission, meanwhile the nozzles also could be used on DI diesel engine with air intake swirl system to substitute for multi-hole nozzle. 初步的试验研究结果表明,此种喷油嘴应用在涡流室式燃烧系统的柴油机上,可降低其燃油消耗率和排气烟度;
For some modes, in which the swirl is unsuitable to the fuel combustion, the air nozzle variable swirl system is a very effective way to decrease the exhaust emission of gases. 对于涡流强度与燃烧不相匹配的发动机工况,喷气式可变涡流进气系统可以有效地降低有害气体排放量。
The effect of intake swirl level inside the cylinder on particulate emission of an automotive diesel engine was experimentally studied using an air injection variable swirl intake system designed by ourselves to change swirl strength. 用自行设计的喷气式可变涡流进气系统改变车用柴油机气缸内的涡流水平,试验研究了不同工况下缸内涡流对微粒排放的影响。
A Study on Air Motion in Diesel Swirl Chamber by LDA 用LDA研究柴油机涡流室内空气运动
Experimental Research on Ignition Characteristics of an Air Swirl Atomizing Spray Nozzle 气动旋流喷嘴点火特性试验研究
Research on Air Flow in Swirl Chamber with Particle-beam Tracing Highspeed Photography 涡流室内气流运动粒子示踪高速摄影研究
Progress in Experimental Research on Air Flow in Diesel Swirl Chamber 柴油机涡流室内空气运动的实验研究进展
Three Dimensional Numerical Modeling for Air Motion in Swirl Chamber Diesel Engine 涡流室式柴油机空气运动的3维数值模拟
Operation experiences tell us that primary air flow, air Speed, swirl and spreading of swirl air, air pressure, temperature of secondary air, accuracy and stable metering to coal feeding system are main factors for influencing behaviors of burner performance. 实践证明,一次风用量、风道风速、旋流风的旋转和扩散、风压、二次风温、喂煤系统的计量准确性和稳定性是影响燃烧器性能发挥的主要因素。
An Analysis of the Air Flowing Coefficient and Swirl Intensity of Helical Inlet Manifold in Diesel Engines Air(初三适用)柴油机螺旋进气道充气系数与涡流强度的分析
Finite Volume Method for Air Flow Field in Diesel Swirl Chamber 柴油机涡流室内流场计算的有限容积法
The effect of the secondary air swirl number on the number of particle impacts which affects slagging was studied to reduce slagging in utility boilers. 为了解决电站锅炉炉膛结渣的问题,研究了对结渣有重要影响的颗粒碰撞数受二次风旋流强度影响的规律。
Influence of Diesel Engine Air Nozzle Variable Swirl System on the Exhaust Gas Emission 喷气式可变涡流进气系统对柴油机废气排放的影响
The turbulent energy, the fluid field structure and the temperature distribution show significant differences with the changes of air swirl ratios. 涡流比变化时,燃烧室内的湍动能、流场结构及温度分布有很大的差异。
LDA Measurements and Mathematical Model of Air Motion in Swirl Chamber of Diesel Engine 柴油机涡流室内空气流动特性的LDA测试及数学模型
A variable intake swirl system by means of different air injection into helical intake passage for diesel engine is developed, and the influence of air nozzle variable swirl system to the exhaust emission of gases is studied. 设计了一种喷嘴在螺旋进气道内喷射空气的可变涡流进气系统&喷气式可变涡流进气系统。研究了该系统对柴油机有害气体排放物的影响。
Design and experimental study of underfloor air distribution with swirl diffusers for office buildings 办公建筑中旋流风口地板送风系统的设计及实验研究
An Improvement on the Formula for Calculating Air Swirl Ratio in an Engine Cylinder 发动机气缸内涡流比计算方法的改进&对RICADO公式的修正
It is also found that the air fuel mixture is richer near the combustion chamber wall and becomes leaner gradually from the wall to the combustion chamber center, the stratification concentration from rich to lean of air fuel mixture forms along the direction of air swirl motion. 靠近壁面处燃油浓度最大,向燃烧室中心方向浓度逐渐降低,沿周向、顺涡流方向形成了明显的由浓到稀的分层。
The influences of air inlet condition ( swirl number and direction), excessive air coefficient and combustor structure on combustion are discussed and optimized control parameters of combustion are obtained. 同时,探讨了炉内配风(旋流数和旋向)、过量空气系数、燃烧器结构改变及低负荷工况时炉内燃烧状况,并给出了相应的优化运行控制参数。
Referring to the experimental results, the air swirl measurement by vane meter, which represents as accurately as possible the practical angular momentum flux, is to be discussed. 参照实验结果,讨论了用风车测量旋流时尽可能准确地反映实际气流动量矩流率的方法。
The theory of turbulent jet has been employed to induce new formulas for wall jet, and on the base of correct spray penetration, air entrainment model in swirl field has been built. 采用紊流射流理论推出了新的壁面射流计算公式,并在正确描述喷注贯穿的基础上建立了有涡流作用的空气卷吸模型。
Meanwhile we applied a second air jet to swirl combustor instead of the central jet as a comparative experiment. We make sure that it is the central jet which reduced the amplitude of thermoacoustic oscillation, not the decrease of the swirl intensity. 同时我们进行了用直流风代替中心风对比试验研究,发现热声振动振幅的下降是中心射流的作用,而不是旋流强度下降的结果。
The structure of intake port directly affects the quantity of fresh air and the strength of swirl in cylinder and it can be related with forming mixture air and oil, combustion, exhaust and total performance of diesel engine. 进气道结构直接影响内燃机缸内充量的大小和涡流的强弱,直接关系到混合气形成、燃烧、排放以及整机性能。
Tests include variable rail pressure 、 air intake pressure and swirl ratio, also EGR in cylinder visualization test. 试验包括变轨压、变进气压力、变涡流比及EGR的缸内可视化试验。
The results show that an increase in the swirl strength of the outer primary air can effectively improve the ignition and burnout characteristics of LVC with the secondary air swirl intensity of 0.67. 结果表明,二次风旋流强度为0.67时,增加外一次风旋流强度能够有效改善低挥发份煤的着火特性和燃尽特性。