发动机

Solid rule ramjet is a new type power system that adapts for morden warfare. As the Virtue of SFRJs simple structure, high specific impulse and accommodating the gas flux itself, enormously improve the cannon-shot of the projectile. The SFRJ-projectile has very nice prospects. In this paper, fistly, the combustion and flow in solid fuel ramjet are analyzed, the physical model of the double-cone inlet and combustor within SFRJ are established.

固体燃料冲压发动机是一种新型的，适合现代战争要求的动力系统，由于固体燃料冲压发动机结构简单、比冲高、自适应性好等优点，大大提高了炮弹的射程，使得其具有广阔的应用前景。

Based on the analysis of meeting a demand of the UAV engine and the characteristic of the diaphragm carburettor of altitude supply fuel,we design a altitude control device to regulate the displacement of the needle valve by pressure difference.

在分析无人机发动机使用要求以及膜片式化油器高度供油特性的基础上，设计了一种通过压力差来调节针阀升程的高度调节器，有效地改善了高度变化对化油器空燃比的影响，提高了发动机的高度性能。

The key factor whicheffects carrier rocket engine technology is the deficiency of the ability of research andirmovation in carrier rocket engine.

影响我国火箭发动机技术进步的关键因素在于发动机研究、创新能力不足。

According to the requirements in the design of engine, several simulation parameters were determined, such as the diameter of the distribution circle of cylinders, the central position and the decline angle of the wobble disk, the length ol the connecting rod.

根据发动机的设计要求，确定了气缸分布圆直径、摆盘中心与气缸的距离、摆盘的倾角、连杆的长度作为发动机虚拟设计及仿真的重点。

As cetane number of methanol is quite low, it is difficult to be applied to compression ignition engine.

根据组合燃烧发动机的特点，将发动机运行工况分为6类，针对每类工况提出不同的控制策略。

The cylinder walls are cooled by circulating a cooling medium through the cylinder jackets or by incorporating fins cooled by air.

汽油发动机的压缩比要低一些，而气体燃烧是靠火花塞点火实现的，而柴油发动机的压缩比显然要高得多，它是靠压缩生热而燃烧的。

In the performance test of the small engine,the double closed-loop control system can implement constant engine speed control.

在小型发动机性能测试平台中，重新设计了电涡流测功机的控制系统，采用双闭环恒转速控制系统对发动机进行恒转速控制，解决了单环控制性能不佳的问题。

With the help of this model, the influence of engines capability by some parameters such as compression ratio、coefficient of excess air and ignition timing can be estimated, and the influence factor was analyzed in this paper.

本文利用该模型预测了压缩比、过量空气系数、点火提前角等参数对发动机性能的影响并分析了这些参数对发动机性能产生影响的原因。

According to the full text below, it is a rare example of a compound rotary engine, but this is contradicted by the picture here which shows two engines of identical size connected to the same steam supply coming in from the top.

根据全文下面，它是一种罕见的例子，一种复合转子发动机，但是这是矛盾的图片在这里显示两个发动机相同的大小连接到同一个蒸汽供应在未来数从顶部。

The influences of heat exchanger and engine on system efficiency are distinguished. The thesis also analysis the efficiency of the compound cycle of liquid nitrogen engine operating on open Rankin cycle together with the liquid nitrogen refrigeration cycle and economy in detail.

首次采用变质量系统热力学原理探讨了通过对进气温度与缸内残余质量温度的控制有助于实现准等温膨胀的可行性；首次采用有限时间热力学对具有压降不可逆液氮发动机开式朗肯循环进行了工作过程分析，研究了漏气和压降对液氮发动机效率和功率的影响关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。