有气门的

This engine drew engine of OHV strong, torque mixes motivation greatly OHC the advantage such as province oil, Jing Yin, low vibration, in technical respect far on these two kinds of type, especially forefathers the crankshaft shift technology of one pace (watertight aircase of way of Off Set Crank), double energy of life (rocker of valve of Two Ways Air Jacket), roller (the 6 old techniques such as Roller Locker Arm) have epoch-making sense more.

该发动机吸收了OHV动力强、扭矩大和OHC省油、静音、低振动等优点，在技术方面又远在这两种机型之上，非凡是先人一步的曲轴移位技术、双气道空气箱、滚子气门摇臂等六大技术更具有划时代的意义。

On the tire with an inner tube, the valve is mounted on the tube.

有内胎式轮胎气门是直接做在内胎上的，无内胎式轮胎的气门安装在轮毂上。

Camshaftless valve actuation includes electromagnetic,electrohydraulic,electropneumatic and electromechanical types.it could vary valve timing agilely,simplify the engine's structure,deactivate some of the engine's cylinders selectively and vary the effective compression ratio flexibly to adapt different fuels.So it could offer more advantages than general variable valve timing.

阐述了在发动机上以电磁、电液、电气或其他方式驱动气门，实现无凸轮轴气门驱动，可以灵活改变气门正时，简化发动机结构，能有选择地闭缸，灵活改变发动机有效压缩比以适应多种燃料要求，使发动机获得比采用一般可变气门驱动更多的好处。

In order to study the intake air flow characteristics in four-valve diesel engines, in this dissertation hot-wire anemometer and PIV twodimension instantaneous measuring technique are used. Extensive experimental study on two intake valve exit flow fields and longitudinal section flow field in cylinder are performed for different type of diesel engines. Great researching progress have been made on the interaction between two intake ports, and the formation process of in-cylinder swirl and flow field structure of cross and longitudinal section for four valve diesel engines. These results are presented in China for the first time and without such kind of research work reported abroad as detailed and deepgoing as this dissertation. The author designs and makes a set of hot wire measuring velocity device to measure the velocity distribution around the intake valve annulus and the cross section flow field in cylinder.

为了研究四气门柴油机进气过程中气体流动的变化规律，本文利用热线测速和PIV二维瞬态测速技术，对四气门柴油机两进气门出口全圆周流速场和缸内横、纵剖面的气体流动流场进行了大量的试验研究，在四气门柴油机两进气道之间相互影响的变化规律，缸内涡流的形成过程及缸内横、纵剖面流场结构等方面取得了重大的研究进展，这一研究工作在国内尚属首次，在国外也未见有如此全面、深入的研究报道。

Some high-performance engines have two separate camshafts, one for each set of inlet and exhaust valves.

一些高性能发动机有两个单独的凸轮轴，分别负责开关进气门和排气门。

I plant's main products are machine-139 F, 142F, 152F, 154F, 168F, 173F, 182F, 188F, E40, E43, C62, C63, C64, C65, 1P60, 1P61, 1P64, 1P65, 1P68, 1P70, 2V77, 2V90, T02-aircraft piston pin, valve spring, with valve tappet, throttle governor stalk, the throttle lever, the exhaust valve adjustment cap, the combination valve putt; And motorcycle engine camshaft CG125-core, under the rocker shaft, the pressure of sales, output shaft, the putt.

我厂的主要产品有通机139F、142F、152F、154F、168F、173F、182F、188F、E40、E43、C62、C63、C64、C65、1P60、1P61、1P64、1P65、1P68、1P70、2V77、2V90、T02通机活塞销、气门弹簧座、气门挺柱、油门调速柄、油门操纵杆、排气门调节帽、气门推杆组合；及摩托车发动机CG125型凸轮轴芯、下摇臂轴、压销体、输出轴、推杆。

And the first research for the variation of valve seat velocity, valve impulsive force and valve jump with the cam turning speed, the structures and the different cam profilers have been engaged in, such study work had not been done before about the valve train.

气门落座特性参数的变化规律在应用单质量模型和有限元模型时是很难得到的，而利用多质量模型可以很容易得到，因此澄清了以往的一些模糊认识，也得出了一些很有价值的结论。

Finally, experiments and analyses in valve gear vibration and noise are conducted by means of the advanced measuring and processing instruments. Especially, the noise caused by valve setting is separated and analysed from the total noise, such work has never been done before. The conclusions are significant for reducing vibration and noise of valve gear.

本文使用目前国际上先进的测试、分析仪器对配气机构的振动、噪声进行了实验和分析，特别是在噪声分析上设法将气门的落座噪声分离出来，专门地进行了分析，这在配气机构的噪声分析上还是第一次，得到了一些有意义的结论，为配气机构的减振、降噪提供了依据。

The works are as follow,lThe system is mechatronics equipment, at the beginning of the paper, the normal and advanced technology about mechatronics is introduced in order to let the research and study be based on good start.2Tire valve assembly belong to DEDS. One tire valve includs 7 partments.In fact there are many methods about how to assembly them together , but the best of them is just only one.

1气门芯装配系统是一种典型的机电一体化设备，论文首先对当今与机电一体化相关的常规、先进技术作了简要介绍，以使研究、开发站在一个比较高的起点之上； 2气门芯装配是典型的离散随机事件，对于组成气门芯的七个零部件，怎样把它们装到一起，实际上有多种方案，但最优方案只有一个。

The current products are: Yuchai yc6105 gas-locks, Valve Spring Block; Dongfeng Kang Ming Chai period of 6 BT Series Spring Block; Beijing Futian BJ491Q Valve Spring Block; Dongfeng locks in the gas-Chai 6102; dragged on 6105 gas products such as door -.

目前生产的产品有：玉柴yc6105气门锁片、气门弹簧座；东风康明期柴发6BT系列弹簧座；北京福田BJ491Q气门弹簧座；东风朝柴6102气门锁片；一拖6105气门锁片等产品。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。