Then diesel fuel oil is injected or sprayed into the cylinder at the end of the compression stroke . 然后在压缩冲程即将结束时,柴油燃料被喷射或被喷雾进入气缸。
Exchange - compression stroke 换气压缩行程
It was found that the compression speed and compression stroke are the two factors affecting the molding pressure most significantly 由模拟找出了压缩速度与压缩行程是两个影响成型压力极大的因素。
It was found that the compression speed and compression stroke are the two factors affecting the molding pressure most significantly 由仿真找出了压缩速度与压缩行程是两个影响成型压力极大的因素。
Using lower switch time , lower compression speed and higher compression stroke will result in lower cavity pressures 使用较短的切换时间、较低的压缩速度以及较高的压缩行程将产生较低的模安穴压力。
This is the four - stroke cycle which is in common use . an alternative is the two - stroke cycle , which combines the exhaust and compression strokes into one 这就是常用的四冲程循环。另一种循环是两冲程循环,它把排气冲程与压缩冲程合并为一个冲程。
When the engine runs in compression stroke and power stroke , the valves must close tightly on their seats to produce a gas - tight seal and thus prevent the gases escaping from the combustion chamber 当发动机处于压缩行程和做功行程时,阀门必须紧紧地关闭以产生一个不透气的气封,以防止气体逃离燃烧室。
In this paper , the general theory and numerical solution procedure were described . by building a diesel modeling with vertical valves and a piston bowl , a whole cycle was calculated , which include intake stroke , compression stroke , expansion stroke and exhaust stroke 通过对带有进、排气门的柴油机进行计算,模拟了一个完整循环内进气道、气门和缸内气体流动的全过程。
Simulation and the associated numerical algorithm on the injection - compression molding ( icm ) process were developed to understand processing characteristics by changing processing parameters including compression speed , switch time from injection to compression , compression stroke as well as initial cavity thickness and part thickness using disk parts 摘要射出压缩成型的仿真以及数值运算是要了解成型参数的改变,包括:压缩速度、射出与封装的切换时间、压缩行程等制程特性而创建的,同时也包含了初始的开模厚度以及使用在光盘片的成品厚度。
On the basis mentioned above , another mathematical model for the supercharged diesel was set up . according to this model some results of simulation calculations were given . the characteristics of operation of the diesel in wet compression : including the excess air coefficient , the cylinder temperature at the beginning of compression stroke , the maximum temperature in the cylinder , the cylinder thermal load , the specific fuel consumption , and efficiency of diesel engine were obtained 在此基础上,又建立了增压柴油机湿压缩的数学模型,对喷水后柴油机的各性能参数,诸如过量空气系数、气缸进气温度,缸内最高温度、气缸热负荷、比油耗、热效率等进行了仿真计算,为增压柴油机进口加湿技术的研究提供了理论依据。