They are generally two different types of cooling system:water-cooling system and air-cooling system.Water-cooling system is more common.The cooling medium, or coolant, in them is either water or some low-freezing liquid, called antifreeze.A water-cooling system consists of the engine water jacket, thermostat, water pump, radiator, radiator cap, fan, fan drive belt and neccessary hoses.
A water-cooling system means that water is used as a cooling agent to circulate through the engine to absorb the heat and carry it to the radiator for disposal.The ebgine is cooled mainly through heat transfer and heat dissipation.The heat generated by the mixture burned in the engine must be transferred from the iron or aluminum cylinder to the waterin the water jacket.The outside of the water jacket dissipates some of the heat to the air surrounding it, but most of the heat is carried by the cooling water to the radiator for dissipation.When the coolant temperature in the system reaches 90',the termostat valve open fully, its slanted edge shutting off the sforter circuit so that coolant circulates through the longer one: water-pump-cooling jacket-thermostat-radiator top-tank-radiator core-bottom tank-pump.
Water pumps have many designs, but most are the centrifugal type.They consist of a rotating fan,or impeller,and seldom are of the positive displacement type that uses gears or plungers.Many water pumps have a spring-loaded seal to avoid leakage of water around the pump shaft.Some V-type engines have a pump on each cylinder biock.
The radiator is a device designed to dissipate the heat which the coolant has absorbed from the engine;it is constructed to hold a large amount of water in tubes or other passages which provide a large area in contact with the atmosphere.
The radiator usually mainly consists of the radiator core, radiator bottom tank,and radiator top tank.Radiator cores are of two basic types,the fin and tube(fins are placed around the tubes to increase the area for radiating the heat)and of the ribbon cellular or honey comb tybe.The popular fin and tube type of radiator core has the advantage of fewer soldered joints and is there a stronger construction.It consists of a series of pareller tubes extending from the upper to the lower tank.The honeycomb type core consists of a large number of narrow water passage made by soldering pairs of thin metal ribbons together their edges.These tubes are separated by fins of metal ribbon which help dissipate the heat.
The radiator cap serves not only to prevent the coolant from splashing out the filler opening,but also to prevevt evaporation of the coolant.
The fan designed to draw cooling air through the radiator core.The fan is usually mounted on an extension of the water pump shaft and is driven by V-belt from a pulley mounted on the front end of the crabkshaft.Usually the same belt drives the alternator, and belt tension is adjusted by swinging the alternator on its mounting.
求高手帮忙翻译一下汽车专业英语啊,急求啊~~~
Nine:Electronic control system consists of various engine sensors, electronic control unit ( ECU ), fuel injector assemblies, and related wiring. The ECU determines precisely how much fuel needs to be delivered by the injector by monitoring the engine sensors.Ten:The engine cooling syste...
十分,求一个高手帮忙翻译,要求人工翻译,是汽车行业的英语短文,懂得的请...
九 提交汽车。最后的程序是从电脑传下的牌号中选择一个牌照号码。解释:完全直译以表明科技英语和协议(式 )英语的严肃性。
急求高手帮我翻译这篇汽车专业英语4
当乘以12笔齿轮口粮的传输, 将运送12000磅-英尺扭矩背叛的驱动轴. 竖井必须强大得足以提供这种扭力一个装轴无变形或开裂下 应变. 传动轴的外壳由高强度钢管,以提供最大的力量,以最小重量. 直径的竖井和壁厚的油管是由几个因素~最大转矩 车辆载荷,双...
汽车专业英语翻译中文,急急急!!!别用在线翻译
通常情况下,有机非金属混合型石棉制动片在制动时不会发出声音,且与汽车发动机接触良好,并且让驾驶员感觉不错。但,这一切都必须建立在高温运行的情况下,因此,这种制动片并不适用于重型卡车或登山汽车。通常,有机非金属混合型石棉制动片的磨损速度要比金属混合制动片快得多,因此,前者需要经常更换。...
那位高手帮忙翻译一下这篇英语文章,谢谢
Beetlemania 的难以置信故事在媒体中流通。一个女人在俄亥俄州跟随了一个在 Livonia ,密西根州与金龟车所有的路一个经销商一起装载而且拒绝离开的输送人直到 她被允许买一。 玩物灰色的过滤,田纳西州以标准的价格为他的 16 岁的儿子买了一如一个礼物。 二天之后某人提供了他 $27,000 对于汽车而且...
汽车专业英语翻译,不要在线翻译
是翻译“汽车专业英语”这个词组吗?(Professional English of Automobile)
汽车专业英语帮忙翻译!!急急
4 。之间的关系,点火延迟, BMEP ,或者DTBP浓度或十六烷值发了言。结果发现,影响点火延迟BMEP上不显着。阿十六烷值约53相比,商用柴油,有可能在15 %的野生DTBP添加到丁烷基燃料。5 。当丙烷添加到丁烷基燃料,点火延迟增加。因此,如果丙烷是用于压燃式燃油,更十六烷值提高 添加剂是必要的比所...
请英语高手帮忙翻译一段文章,文章有点长,小弟表示歉意,不要用翻译器...
【与道路使用的交通流量有关,客运车被当作标准参照,其他车辆则以“客运车单位(pcu)”来进行描述。】Differences in the urban and rural situations arise due to the variation of speeds in the two areas. Decisions on road width are not normally made on total traffic flow per day as this...
帮忙翻译一下这篇英语,高手啊
这时有辆公车停了下来,我问司机车还走多远,“还有四个站”,女司机回答道。上车坐到最后一站,下车的时候,司机热心的指点我该乘坐那辆公交车。大约等了多半个小时,实在等不了了,我犹豫要不要乘出租车回去,虽然车费非常贵贵。就在这个时候一了一辆公交车,车停了下来,随即车门打开了。“我...
急求英语高手帮忙翻译一段毕业论文(中译英),谢谢啦!
1.1 The purpose of the research and significance of Through the interchange bridge at home and abroad access to research, Huaihai Road and the Canal Bridge, according to the present layout, topography and road cross-situation, carry out a serious investigation, analysis, comparison, ...