Abstract : based on analyzing of technology and construction feature of inlet pipe casting for lost process cad / cam system of die program is setup through improvement and second development of the imported system 文摘:以进气管为例,通过对引进系统的改进和二次开发,在对铸件工艺和结构特征分析的基础上,建立了消失模模具cad / cam系统。
The paper introduces acquired air rate of flow in admission pipes and fluidity in cylinder on single cylinder or multi cylinder engines with hot - wire anemometer , and demarcation and adjustment method of measure values are provided 摘要本文介绍了利用热线风速仪测量单缸与多缸内燃机进气管内流速、气缸内气体流动以及标定与修正的方法。
The passage dimension of separation chamber , the heating temperature of intake pipe air and the relevant influence of the ceramic heat insulation coating of combustion chamber upon the compressive ignition process of natural gas were studied by experiment 实验研究了分隔室通道尺寸、进气管空气加热温度、燃烧室陶瓷隔热涂层对天然气压燃着火过程的相关影响。
In the experiment the methanol was injected into the induction manifold of the diesel engine and evaporated to form methanol / air mixture with the induction air . the methanol quantity was controlled by an electronic control system 试验中的甲醇是通过一套电控喷嘴向进气管喷射实现,为此作者制作了一套简单的电子控制系统,对燃烧过程中的预混燃烧甲醇量进行控制。
Abstract : through the study of inlet manifold of truck direct injection diesel engines , we studied the fundamental law of the utilization of gasdynamic effect in the inlet manifold to increase the volumetric efficiency in multi - cylinder engines 文摘:本文通过对车用直喷式柴油机进气管的试验研究,探讨了在多缸柴油机中利用进气管内的动力效应以提高充气效率的基本规律。
In order to improve the prediction accuracy , the sensitivities of pipe friction coefficients , pressure loss coefficients in bents , wall temperatures and heat transfer coefficients in pipes and cylinders on the volume efficiency are investigated 为提高充气效率的计算精度,由模拟计算和相关试验,分析了管道的摩擦系数、弯管的压力损失系数、进气管壁和气缸壁温度及其传热系数对充气效率的影响程度。
When the inlet valve opens , a pressure pulse is generated in the air inlet pipe , which is damped as the piston continues to move . when the inlet valve closes , another pressure pulse of certain duration is generated , thus giving rise to a periodic inlet noise 当进气门开启时,在进气管中产生一个压力脉冲,而随着活塞的继续运动,它受到阻尼;当进气门关闭时,同样产生一个有一定持续时间的压力脉冲。
This paper investigates the structural parameters of air inlet pipe , air compensating pipe and air compensating valve which influence the air compensation of air compensating valve for motorcycle catalytic converter , the position of air compensating hole , and the relationship of air compensating pressure with engine speed 本文就影响摩托车催化转化器补气阀补气量的进气管、补气管、补气阀的结构参数,以及补气孔的位置、补气压力随转速的变化关系等进行了探讨。
For the sake of realizing compressive ignition of single fueled natural gas and aiming at the characteristics of high spontaneous combustion temperature of natural gas , the separated combustion chamber provided with low heat radiation structure was designed , meanwhile the heating device for the intake pipe air and the ceramic electro - thermal plug heating device inside the separation chamber were set up 摘要为实现单一燃料天然气的压燃着火,针对天然气自燃温度高的特点,设计了具有低散热结构的分隔式燃烧室,同时设置了进气管空气加热装置和分隔室内陶瓷电热塞加热装置。
The experimental results show that methanol can replace 35 . 1 % diesel by injecting methanol into intake manifold to form even mixture of methanol and air so as to be fired by diesel in cylinders , and the acceleration capability of the car increases obviously and fuel economical performance also improves 试验结果表明,利用进气管喷射甲醇与空气形成均匀的预混合气,在气缸内由柴油引燃的方法,能使甲醇对柴油的替代率达到35 . 1 % ,经济性有所改善,而汽车的加速性能有较显著地提高。