发动机

DRIVE PERFORMANCE: two-stroke, air cooling engine, whose key parts is imported, is powerful and reliable. Excellent start-up performance guarantees prompt start, constant variable speed offers convenient and safety operation, chain-driven chan transmission minimizes power losses.

动力性能：风冷二冲程发动机，功率强大，多种进口件组装，性能稳定可靠，寿命长；优异的启动性能，保证您不超过三次拉动，即可启动发动机；采用二级传动、无级变速装置，使整车运行安全可靠，操纵方便；链传动，令功率损失最小。

During the 1960s, Rocketdyne tested numerous aerospike engines, ranging in size from subscale, cold-flow models to this 250,000- pound-thrust oxygen/ hydrogen engine shown at a test stand in Nevada.

在20世纪60年代， rocketdyne测试，许多气动发动机，在大小不等，从分量，冷流模型，这25.0万-磅推力氧/氢发动机显示，在试验的立场，在内华达州。

Through malfunction of the tests of 810 Research Institute, the combustion performance of the hybrid motor and model about regression rate have been studied in the dissertation. The main aspects are as follows: The performance of the HNO3+N2O4 -HTPB hybrid rocket motor were all discussed.

本文结合航天科技集团公司810研究所正在研制的AK-20L/HTPB+Al组合固液火箭发动机，开展了固液火箭发动机混合燃烧特性的数值模拟工作，在此基础上给出固体燃料退移速率预示模型及预示结果。

A method and apparatus for increasing the propelling force of pulse engine features that the fuel nozzle of pulse explosion engine is arranged in combustion chamber to close jet tube exit, and the fuel is reversely sprayed out to generate a shock wave barrier near the jet tube for preventing the airflow from flowing out of the combustion chamber, resulting in raising the pressure in combustion chamber and in turn increasing the propelling force.

本发明公开了一种提高脉冲发动机推力的方法和装置，它是通过将脉冲爆轰发动机的燃料嘴置放在燃烧室中靠近喷管出口附近，并使燃料逆向喷出，在燃烧室内靠近喷管附近形成一道阻止气流流出燃烧室的激波，激波的作用是使燃烧室压力升高，从而的到较大的推力。同时由于本发明的结构特别的简单，所以实现非常容易，并且工作效果十分显著。

A control apparatus for an engine increases an intake air quantity just before engine stop to increase a compression pressure in a compression stroke.

一种发动机(11)的控制装置(30)，用于在发动机停止之前增加进气量从而增加了压缩冲程中的压缩气压。

As the compression pressure is increased, a negative torque in the compression stroke increases and obstructs engine rotation, and brakes the engine rotation.

随着压缩气压增加，压缩冲程中的负转矩也增加并阻碍发动机旋转，从而停止发动机旋转。

Because a smaller portion of the compression stroke is devoted to compressing the intake air, an Atkinson-cycle engine does not take in as much air as would a similarly designed and sized Otto-cycle engine.

因为在压缩冲程小部分是用于压缩进气，一阿特金森循环发动机不参加尽可能多的空气那样，是同样大小的设计和奥托循环发动机。

By adjusting the linkage to allow a power stroke that is longer than the compression stroke, the engine can achieve greater efficiency than with the Otto cycle engine.

通过调整挂钩，使权力中风，比压缩冲程长，发动机可以达到，但与奥托循环发动机的效率。

The highly efficient Atkinson-cycle engine, made possible by the Variable Valve Timing with intelligence system, allows the expansion/power stroke to be longer than the compression stroke so that combustion energy can be more effectively used for production of engine power.

高效的阿特金森循环发动机，作出与智能可变气门正时系统，可以使扩充/动力冲程要长于压缩冲程，使燃烧的能源可以更有效地用于生产发动机力量。

The machining of valve guider and valve set is one of the key process in production of engine cylinder-head.Arming at the precision finishing of valve guider and valve set,a special compound deep-hole cutting tool was designed and made out.

发动机气门导管孔和气门座圈的加工是发动机缸盖加工的关键工艺之一，针对气门导管孔与气门座圈的精密加工，设计制造了专用的复合深孔加工刀具，介绍了该刀具的结构与加工原理，并在试验的基础上优选了加工刀片材料，设计了加工刀片的结构参数。

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。