么么哒狂人
两大机构是配气机构、曲柄连杆机构。五大系统是启动系、冷却系、润滑系、点火系(汽油车)、供给系。
曲柄连杆机构可以提供燃烧场所,把燃料燃烧后产生的气体作用在活塞顶上的膨胀压力转变为曲轴旋转的转矩。气机构的作用按照发动机每一气缸内所进行的工作循环和发火次序的要求,定时开启和关闭各气缸的进、排气门。
汽油机燃料供给系可以根据发动机的要求,配制出一定数量和浓度的混合气,供入气缸,并将燃烧后的废气从气缸内排出到大气中去。
在汽油机中注意事项
要使发动机由静止状态过渡到工作状态,必须先用外力转动发动机的曲轴,使活塞作往复运动,气缸内的可燃混合气燃烧膨胀作功,推动活塞向下运动使曲轴旋转,发动机才能自行运转,工作循环才能自动进行;
因此,曲轴在外力作用下开始转动到发动机开始自动地怠速运转的全过程,称为发动机的起动;完成起动过程所需的装置,称为发动机的起动系统。
快乐皇帝
发动机的组成发动机由两大机构,五大系统组成:两大机构:曲柄连杆机构(机体组、活塞连杆组、曲轴飞轮组)配气机构(气门组,气 门传动组)五大系统:燃料供给系润滑系冷却系点火系起动系
就在水的一方
Hyundai Motor by a number of devices and institutions. Different models and different types of car manufacturers to produce their basic structure by the engine, chassis, electrical equipment and most of the four components of the body. (A) Engine Motor vehicle for the exercise of that power the devices. Its role is to make fuel combustion power, and then through the chassis of the power train wheel drive vehicle driving. There are gasoline engines and two diesel engines. Hyundai Motor widely used reciprocating-piston internal combustion engine. It is through the combustible gases inside the combustion cylinder in the expansion pressure and promote Piston movement through the connecting rod and crankshaft rotation so that the output power to the external. Including the two main agencies and five major systems, they are crank linkage, valve, fuel supply systems, ignition system (gasoline engine), the starting system, cooling system and lubrication system. The ignition diesel engines for compression-ignition, so no ignition system. 1, crank linkage From the main body, piston rings, connecting rod, crankshaft and the flywheel, and other components. For the upper part of the cylinder block, as the lower part of the crankcase. Pistons located inside the cylinder. Piston ring and cylinder used to fill the gap between the piston to prevent the leakage of gas cylinder inside the box to the crankshaft. Crankshaft box mounted on the crankshaft. Flywheel fixed on the back-end crank, to reach out beyond the engine block, responsible for external power output. Pistons link to connect with the crankshaft, responsible for the transfer of power between the two sports with. Is a multi-cylinder engine car engine, piston connecting rod and the number of tanks and a few, but only a crank. 2, Valve The agency mainly by the camshaft, valves and valve drive component parts. Each cylinder has an intake valve and exhaust valve, which are located into the exhaust crossing, in charge of closed and open into the exhaust Road. Through the camshaft timing gear teeth or belt-driven by the crankshaft and rotate through the valve timing drive components will open the valve will be necessary and sufficient fresh liquid into the cylinder or combustion emissions rule out the cylinder. 3, the gasoline engine fuel supply system From the main air cleaner, carburetor (or fuel injection devices), intake manifold, exhaust pipe, muffler, petrol tank and fuel pump components. The main function is to fuel atomization, evaporation, air and mixed into different concentrations of combustible mixture into the cylinder charge for the use of combustion. At the same time, after the burning of waste gas cylinder rule out the possibility. Mixed into the cylinder of gas pedal by the driver to speed up the adoption of control to meet different engine load. 4, diesel fuel supply system From the main air filter, intake manifold, exhaust pipe, muffler, diesel tanks, fuel pump, fuel injector components, and so on. Through the air filter and into the trachea into the air inside the cylinder. The diesel tank of diesel fuel was drawn into the pump and, after pressure fuel pump, fuel injector through the mist spray directly into the cylinder combustion chamber. In the diesel combustion chamber to complete evaporation, a mixture of spontaneous combustion. After burning the exhaust-pipe emissions from the cylinder. According to the driver through the pedal to speed up the size of the engine load, control is injected into each cylinder diesel volume. 5, ignition system Ignition system for gasoline engine alone, but by the battery, ignition switches, electrical sub-assembly, ignition coil, spark plugs and high-tension line component. Spark plugs located in the cylinder combustion chamber. The system's primary role is to generate electric spark spark plugs on time, within the cylinder ignited combustible mixture and acting. The diesel engine combustion for self-ignition (ignition), no ignition system. 6, cooling and lubrication systems Cooling system and lubrication system is responsible for the protection of the normal work of the engine so that the engine has a longer service life. From the main cooling system water pump, radiator, fan, water kits and warm festival, etc., in charge of the engine so that a suitable temperature. By lubricating oil pump, oil filter, the main oil and oil pan Road, starting on the engine lubrication, cooling, cleaning and sealing effect, and so on. 7, the start-up system Mainly by the battery, start-up and control the transmission and starter (motor), and so on, to start the engine to make it operational.
已然晕菜
细节方面有点瑕疵。water pump is composed of motor, speed reducer ,crankshaft, connecting bar, crosshead, piston, pump body mostly.最好把pump body前的逗号换成and,英语的习惯是无论并列多少个名词,倒数两个的中间要加and: 1,2,3,4 and 5.这段瑕疵较多:This paper first introduced the structure and characteristics of the water pump, and then choose the motor and the speed of the crankshaft on the basis of filling the pressure and flux requirement and the choice of motor revolutions of the crankshaft,then design the speed reducer , connecting rod, pump body and then check intensity of every part. 1、就语法角度,introduce用了过去时,and then 后的choose也应两边对称,时态一致用chose,而且and then前的逗号是多余的(后面……,then是正确用法)。2、从语感方面,and太多,连词应变变花样,建议这样改:This paper first introduced the structure and characteristics of the water pump. Moroever, it chose the motor and the speed of the crankshaft on the basis of filling the pressure as well as flux requirement and the choice of motor revolutions of the crankshaft,then design the speed reducer , connecting rod and pump body to(用动词不定式表目的较好) check intensity of every part.这一段:The main content of the is selecting programme, the design of the speed reducer, the selection of structure of the pump selection, the design of the pump body,(逗号多余)and the design of the connecting rod, the design of the crosshead. 其他没什么了。
jingmaotong
我的意见哈~喷雾泵站是采煤工作面的重要设备,在减小煤尘与瓦斯的危险和改善工作面的环境上起着重要的作用。 water pump station is an important equipment in the coal face.It plays an important role in redusing the danger of dust and gas concentrations.*漏译了"改善工作面的环境"water pump station is an important equipment in the coal face.It plays an important role not only in redusing the danger of dust and gas concentrations but also in improving the environment of the working surface.喷雾泵站主要应用于采煤机的喷雾除尘,是采煤工作面喷雾系统的主要组成部分。 water pump station is mainly used in the mist spray and aspirating of coal cutter. It is a main part of the aspirating system of the coal face.*技术,设备的应用有更准确的词apply.还有就是前后用词应避免重复water pump station is mainly applied in the mist spray and aspirating of coal cutter.It constitutes the vital part of the whole aspirating system of the coal face. 喷雾泵主要由由电动机,减速器,曲轴,连杆,十字头,柱塞,泵体组成。设计的任务主要是对喷雾泵进行设计并进行必要的校核。 water pump is composed of motor, speed reducer ,crankshaft, connecting bar, crosshead, piston, pump body mostly. The main task of design is designing water pump and make the necessary intensity checking.*一系列词作同等成分,后面应用and.再说compose后面也不能少.前后design在汉语中都是语病,你认为正确可以不改.进行时的用法也似不妥.make the necessary intensity checking的主语不当,句子逻辑关系不明.water pump is composed of motor, speed reducer ,crankshaft, connecting bar, crosshead, piston, and pump body. Its main task is devised to carry on the design to water pump and make the necessary intensity checking of it. 本文首先介绍了喷雾泵的结构和特点,然后根据压力与流量的要求选择电动机和曲轴的转速,进而对减速器,曲柄连杆机构,泵体进行设计并且对各个部件进行强度校核。 This paper first introduced the structure and characteristics of the water pump, and then choose the motor and the speed of the crankshaft on the basis of filling the pressure and flux requirement and the choice of motor revolutions of the crankshaft,then design the speed reducer , connecting rod, pump body and then check intensity of every part. *此段酷似机译产品.很难令人明白.还是逻辑方面出错.choose的主语呢?总不能是This paper.原文的问题.很难去改,还有the choice of motor revolutions of the crankshaft在原文找不到对应处.另外on the basis of ...不如用according to. 另外the motor and the speed of the crankshaft应该是the speed of the motor and the crankshaft.另外then design the speed reducer , connecting rod, pump body and then check intensity of every part.缺少递进关系.最后把时态调为一致.下面改一下,只求顺嘴些.In the first place,this paper introduced the structure and characteristics of water pump. Afterward, it chose the speed of the motor and the crankshaft according to the pressure and flux requirement. then designed the speed reducer, connecting rod and pump body,furthermore checked intensity of every part.设计的内容主要有方案的选定,减速器的设计,泵的结构形式的选择,泵体的设计,曲柄连杆机构的设计,十字头的设计。 The main content of the is selecting programme, the design of the speed reducer, the selection of structure of the pump selection, the design of the pump body,and the design of the connecting rod, the design of the crosshead. *哎~无话可说了The main content included the choice of programme, the design of the speed reducer,the pump body, the connecting rod,and the crossheadthe, as well as the selection of the structural style of the pump. 该喷雾泵结构紧凑,占地面积小,符合采煤工作面的要求。 The structure is compact ,and the water pump covers small area.It accord with the need of the coalface. *哎~最后一句了because of the compact structure and the small covering area of this water pump,it can fulfil the need of the coalface.关键词:喷雾泵 曲轴 减速器 曲柄连杆机构 key words: water pump crankshaft speed reducer connecting rod
yaodabian0214
四杆机构中曲柄摇杆机构成立的条件是:杆长之和条件:
1、平面四杆机构的最短杆和最长杆的长度之和小于或者等于其馀两杆长度之和。
2、在铰链四杆机构中,如果某个转动副能够成为整转副,则它所连接的两个构件中,必有一个为最短杆,并且四个构件的长度关系满足杆长之和条件。
3、在有整装副存在的铰链四杆机构中,最短杆两端的转动副均为整转副。此时,如果取最短杆为机架,则得到双曲柄机构;若取最短杆的任何一个相连构件为机架,则得到曲柄摇杆机构;如果取最短杆对面构件为机架,则得到双摇杆机构。
4、如果四杆机构不满足杆长之和条件,则不论选取哪个构件为机架,所得到机构均为双摇杆机构。
扩展资料:
定义:具有一个曲柄和一个摇杆的铰链四杆机构称为曲柄摇杆机构。通常,曲柄为主动件且等速转动,而摇杆为从动件作变速往返摆动,连杆作平面复合运动。曲柄摇杆机构中也有用摇杆作为主动构件,摇杆的往复摆动转换成曲柄的转动。曲柄摇杆机构是四杆机构最基本的形式。
应用举例:牛头刨床进给机构、雷达调整机构、缝纫机脚踏机构、复摆式腭式破碎机、钢材输送机等。
参考资料:百度百科-曲柄摇杆机构
基斯颠奴86
你好,机体与曲柄连杆机构的作用是:将燃料在气缸中燃烧时燃气作用在活塞顶上的压力,借助连杆变为曲轴的扭矩,使曲轴带动工作机械做功,机体与曲柄连杆机构的主要零件有气缸体、气缸盖、活塞、连杆、曲柄、飞轮等。一点建议望采纳!
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