气门

The optimized exhaust lag angle and intake advance angle of the EQ6100 engine are calculated by means of alternated one dimension searching method vary with engine operating conditions.

采用轮流一维搜索法，计算出随EQ6 10 0发动机工况变化的优化的排气门延迟关闭角和进气门提前开启角。

In the engine, cams on the camshaft cause the intake and exhaust valves to open.

在发动机中，凸轮轴上的凸轮控制进气门和排气门的开启和关闭。

Just replaced the cylinder, piston, piston rings, valves, valve oil seal, camshaft, crankshaft, when the regulatory chain, oil pump chain, and a full set of the main drive plate, transmission belt.

刚换过气缸，活塞，活塞环，气门，气门油封，凸轮轴，曲轴，时规链，机油泵链，全套主驱动盘，传动皮带。

"In the other kind of valve mechanism for an engine, the valves are located in the cylinder Block instead of the head."

另一种气门机构的气门是装在气缸体上，而不是装在气缸盖上。

"In the other kind of valve mechanism for an engine, the valve s are located in the cylinder Block instead of the head."

另一种气门机构的气门是装在气缸体上，而不是装在气缸盖上。

The closing of the exhaust valve laps over the opening of the intake valve.

排气门的关闭和进气门的开启重叠。

Low ash results in valve recession while high ash leads to valve guttering or torching and excessive piston and combustion chamber deposit.

灰分过低，造成气门磨损加剧；灰分太高，造成气门熔损及燃烧室和活塞沉积物增加，严重时导致活塞环及气缸套磨损。

A spring on the valve stem tend s to hold the valve on its seat.

气门杆上的弹簧使气门保持在气门座上。

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。

According to tire valve assembling craftwork, give the math model based on Petri Net and stimulate it, and get the best scheme. All these work afford a precondition and macroscopical guidance for study and making out a good function tire valve assembling equipment.3Have a deep research on the whole structure of the assembly equipment. Great innovation is presented in the design process of 9 suits of transmission machine and 5 sets assembly tongs, so that the structure is compact and the tongs have good fuctions. Especially, the design of tongs for extrusion is perfect as the author think.4 Hardware about control is selected carefully and software is programmed seriously.

故此，按照现有的气门芯装配工艺，运用Petri网对气门芯装配进行了数学建模，并对之进行了装配仿真，得出理想状态下的最优方案，为研制高效的气门芯装配系统提供了必要的前提条件和宏观指导； 3对装配系统的整体结构作了深入研究与规划；对9套送料机构和5套装配夹具进行了大胆的创新设计，使得整套系统结构紧凑，装配夹具性能优良，尤其是镦顶夹具的设计，为作者得意之作； 4控制系统硬件进行了精心选型，软件进行了认真编写。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。