发动机

Investigation results show that DME engine has shorter ignition delay, lower peak pressure, lower maximum rate of pressure rise, smaller premixing combustion amount and larger diffusion combustion amount.

首次研究了排气再循环对二甲醚发动机排放和性能的影响，结果表明：二甲醚发动机可以容许较大的EGR率来降低NO〓排放而不会恶化发动机热效率和HC排放。

There are intact management parlours and produce section correspondingly and more than 450 workers there.

哈尔滨东安汽车动力股份有限公司是哈尔滨东安集团公司下属的一家上市公司，从事汽车发动机的研制和生产已经有23个年头，成为了国内小排量汽车发动机及变速箱的研制、试验、生产基地，产品主要为哈飞公司、昌河公司、一汽吉林车厂、奇瑞公司、比亚迪公司、陕飞汉江公司、东南汽车公司等多家整车厂配套。2003年实现了产销汽车发动机和变速箱40万台套，2003年实现销售收入50多亿元。

Failure phenomenon: mechanic report: a 125-type scooters (GY6 engines), it is difficult to start the engine cold, start to work within a few minutes after the operation is not smooth, but the engine JJM1 Pressure Gauge Valve thermal working well, start easily.

故障现象：修理工反映：一辆125型踏板车（GY6发动机），发动机冷态很难启动，启动后开始工作的几分钟内运转不平稳，但发动机热态工作良好、启动容易。

Due to the demand of the large angle attitude control, the unit quaternion is used to describe the spacecraft attitude in this thesis.

针对飞行器以姿控发动机作为姿控执行机构时的大角度姿态运动需求，本文采用单位四元数作为弹体姿态描述，考虑到姿控发动机布局对姿态控制的影响，直接以姿控发动机推力作为系统的控制输入，利用反馈线性化方法，将原非线性系统转化为一个六阶线性子系统和一个一阶内动态子系统。

A comparison of the drawings given of the two engines exhibits, nevertheless, a striking resemblance; and, assuming that of the marquis's engine to be correct, Savery is to be given credit for the finally successful introduction of the "semi-omnipotent " and " water-commanding " engine of Worcester.

比较图纸给出的两个发动机展品，但一个突出的相似之处；与假定的马奎斯的发动机是正确的，萨弗里是要给予信贷，为最后成功引进&半万能&与&水指挥&发动机的伍斯特。

A comparison of the drawings given of the two engines exhibits, nevertheless, a striking resemblance; and, assuming that of the marquis's engine to be correct, Savery is to be given credit for the finally successful introduction of the "semi-omnipotent " and " water-commanding " engine of Worcester.

比较图纸给出的两个发动机展品，但一个突出的相似之处；与假定的马奎斯的发动机是正确的，萨弗里是要给予信贷，为最后成功引进&半万能&与&水指挥&发动机的伍斯特。通信博客——通信人自己的博客！

A vacuum system for a supercharger engine is provided, which comprises an engine intake manifold and a vacuum booster connected with a first vacuum tube.

一种增压发动机真空系统，主要包括发动机进气歧管通过第一真空管连接真空助力器，其特征在于：所述发动机进气歧管与真空助力器之间管路上设有产生真空度的装置。

Therefore two-chamber single-thrust rocket motor structure was put forward.

使用增加发动机药量的方法，提高一室一推的火箭发动机推力时，通气参量过大直接影响发动机的燃烧性能。

Theoretical and experiment researches of transmission mechanism and control strategy of the CVT have been carried out under the project (59835160) financed by National Natural Science Foundation which includes follow content:1The kinematic relation of the metal pushing V-belt type transmission is analyzed. The relation among oil pressure of pulley cylinder, transmission ratio and input torque under load condition is studied. Optimal design method for metal pushing V-belt type continuously variable transmission is put forward.2Based on the engine experiment, torque and oil consumption model of engine are established by method of spline interpolation. The optimum economy and performance curves are put forward.

本文在国家自然科学基金重点项目（资助号：59835160）资助下，对金属带式无级变速传动系统的传动机理、匹配及控制策略等进行了系统深入的理论分析和实验研究，具体研究内容如下：1）系统地分析了金属带无级变速传动的基本运动规律，研究了在负载状态下，带轮油缸压力与速比和输入转矩的关系，提出了对金属带式无级变速传动系统进行优化设计的方法。2）通过发动机台架试验，利用样条插值方法构造了发动机转矩和发动机油耗模型，确定了发动机最佳经济性与最佳动力性工作线。

Running miles can be extended: An increase of 15%- 35% running miles can be achieved by trail test of the motor car.

保护引擎：(1)清除发动机内积碳、污垢，并能阻止其再聚集，保护发动机并延长其寿命；(2)发动机噪声、颤抖减弱，在酷暑、严寒下也容易启动；(3)机油的寿命大幅延长

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。