外文翻譯---汽車底盤構(gòu)造

1、<p><b>　　附 錄 Ⅱ</b></p><p><b>　　外文資料及翻譯</b></p><p>　　Automobile chassis structure</p><p>　　The modern automobiles ,as you know ,evolved from the horse-dr

2、awn carriage which was gradually replaced in the early part of last century .Early automobiles even looked like carriages .As the automobile made a place for itself in our daily lives ,it also become more and more expens

3、ive to purchase ,use ,and maintain .Automobile expenses now account for a substantial portion of most family budgets .In fact ,one out of every four retail sales dollars goes for an automotive-related purchase.</p>

4、<p>　　To make the best buy ,a consumer must understand how work and what kinds of attention they need to stay in good shape. Knowledge of the automobile is equally important for anyone considering employment in th

5、e automotive industry .This chapter will begin the study of the automobile with an examination of its major components-frame ,body ,engine , drivetrain ,and chassis .</p><p><b>　　Chassis </b><

6、/p><p>　　The term chassis describes all the parts of the automobile under the body .The chassis forms the main structure of the modern automobile .A large number of designs in pressed-steel frame form a skeleto

7、n on which the engine ,wheels ,axle assemblies ,transmission ,steering mechanism ,brakes ,and suspension members are mounted .During the manufacturing process the body is flexibly bolted to the chassis . The major compon

8、ents of the basic chassis are the frame ,engine, drivetrain ,wheels ,tires ,ste</p><p>　　Another important chassis component is the steering system ,which allows the driver to control the direction the car t

9、ravels. The steering wheel ,which the driver controls , is connected to a gearbox that multiplies the driver’s effort .The gearbox is linked to the front wheel of the vehicle.</p><p>　　The last major chassis

10、 component is the braking system the function ,the function of which is to either reduce the vehicle’s speed ,bring the vehicle to a halt ,or keep it stationary if already halted. When the driver pushes on the brake peda

11、l,hydraulic fluid is forced out of a master cylinder to each of the four wheels .The resulting hydraulic pressure operates a drum or disk brake assembly to slow or stop the car’s wheels. </p><p><b>　　E

12、ngine </b></p><p>　　Diesel engines are substantially more efficient than gasoline engines by an estimate of 35-40 percent, producing more power per unit of fuel burned. The efficiency of the diesel eng

13、ine has been greatly enhanced by the use of turbochargers and charged-air cooling, which has resulted in increased power and performance at minimum fuel consumption rates. Advancements in engine design also mean diesel i

14、s no longer considered a "dirty" fuel. Fuel injection and control strategies have produced the "smo</p><p><b>　　Clutch</b></p><p>　　The main function of clutch is cut

15、off and realize the transmission of engine power transmission to ensure that when the car started the engine and transmission smooth joint, to ensure a smooth start car in the shift when the engine and transmission of se

16、paration, to reduce transmission of the shift Gear between the impact in their work by the larger dynamic load, we can limit transmission of the largest faced by the torque to prevent the transmission of some parts due t

17、o the overload and damage</p><p><b>　　Gear Box</b></p><p>　　A gear box is a speed and power changing device installed at some point between the engine and driving wheels of the vehic

18、le.It provides a means for changing the ration between engine and driving wheels rpm to best meet each particular driving situation. The gear box is a device that is connected to the back of the engine and e same averag

19、e speed. This is why these vehicles are hard to turn on concrete when the four-wheel-drive system is engaged.</p><p>　　Each wheel is sends the power from the engine to the drive wheels. An automobile engine

20、runs at its best at a certain range.</p><p>　　Front Axle</p><p>　　Front axlw is used for steering front wheels carried on stubaxles swiveling upon king pins at the axle extremities.</p>&

21、lt;p>　　Seering Systems</p><p>　　Steering arms and a track rod link the two stub axles together for swiveling them by a steering wheel about the king pins.The steering wheel linked to one of the stub axles

22、 by a shaft,a gear box and a suitable linkage is opeated by the driver’s hand wheel.Previously the axle-a onepiece beam was used to support the vehicle through springs,An arrangement known ad independent front suspension

23、 has replaced the axle and spring arrangement.Under the control of springs,the wheels are free to rise and f</p><p>　　Drive Axle</p><p>　　For fixing rear wheels,a tube like shaft enclosing drivi

24、ng shafts with suitable bearings for rotating the wheels is useds.It is enlarged at the center for enclosing the final drive gears used for providing main speed reduction between the engine and the driving wheels. The ch

25、ange of direction of the drive trom the fore and aft line of the propeller shaft to the transverse line of the axle shafts is also provided by this tube known as rear axle.</p><p>　　The differential is a dev

26、ice that splits the engine torque two ways, allowing each output to spin at a different speed. It is found on all modern cars, and also in many all-wheel-drive vehicles. These all-wheel-drive vehicles need a differential

27、 between each set of drive wheels, and they need one between the front and the back wheels as well, because the front wheels travel a different distance through a turn than the rear wheels. Part-time four-wheel-drive sys

28、tems don't have a differential betw</p><p>　　Bake System</p><p>　　For controlling the movement of the vehicles or to stop them,efficient braking system is a necessity for a vehicle.Brakes at

29、tached to each of the four wheels are of two types.In the initial type,a pair of shoes carried on a stationary plate is expanded in contact with a rotating drum mounted on the wheels to arrest the motion of the drum.In t

30、he modern type of brakes,one or more pairs of pads are carried in a caliper attached to the axle or wheel supporting linkage.The sides of the disk mounted o</p><p>　　For operating the brake,either mechanical

31、 or hydraulic system is used.Mechanical system requiring gearing system for mechanical and hydraulic fluid for the hydraulic brakes are used</p><p>　　Propeller Shaft And Uniwersal Joint</p><p>　

32、　For connecting the output shaft of the gear box to the rear axle,a long shaft known as propeller shaft is used.This shaft is either enclosed in a tubular casing or kept exposed or opened with a universal joint fitted at

33、 each end for allowing the changes in the shaft alignment with the rise and fall of the rear axle due to road surface variations.Universal joints cannot be eliminated even if the final drive gears are fixed to the frame

34、with the wheel springing independently.Neither the misalignme</p><p>　　For preventing the transmission of shock from uneven road surfaces to the vehicle,springs are used to support the vehicle on the axle.&l

35、t;/p><p>　　In order to allow for the vertical movements of the wheels relative to the frame as well as to allow the parts of the shaft to operate at different angle,another increasingly used arrangement is used

36、.It consists of mounting the final-drive gears and the differential gear in a casing attached to the frame with independently sprung wheels attached to them by means of shafts through devices called universal joints.<

37、/p><p><b>　　Wheels</b></p><p>　　The wheels which are four in number are fitted below the car chassis to support the load of the vehicle and passengers as well as to run the car.They are

38、fitted with hollow rubber tyres filled with air in rubber tubes under sufficient pressure necessary for carrying the load.Theshocks caused by road irregularities are absorbed by them.By fitting springs between the wheels

39、 and the vehicle allowing the vertical movement of wheels in relation to vehicle,greater part of unevenness of road surfaces is</p><p>　　When going round a curve,the inner wheel has to travel a smaller dista

40、nce in comparison to the outer wheel.But both the rear wheels would rotate at the same speed if they are connected by a shaft.This rotation of both the wheels would result in slipping of one or both of them on the road s

41、urface causing excessive tyre wear as well as severe twisting loads on the shaft.Moreover,the two wheels of the exactly similar diameter(which is not usually so)can only turn at the same spdde witheout slip on </p>

42、<p>　　Through the above exposition know, Vehicle performance depends not only on the merits of the auto component parts of the performance, and to a large extent depend on the components of the coordination and co

43、operation depends on the overall layout; The overall design of the level of vehicle design quality, performance and vitality products play a decisive impact</p><p><b>　　譯文</b></p><p>

44、;<b>　　汽車底盤構(gòu)造</b></p><p>　　現(xiàn)代的汽車，是從上一個世紀早期用馬車逐漸演變過來的。早期的汽車看起來更像支架。汽車在我們的日常生活中占有了一席之地，也變得越來越昂貴，在使用和維護方面。汽車費用現(xiàn)在占多數(shù)家庭預(yù)算的一個堅固部分。</p><p>　　要做最佳的購買，消費者必須了解汽車工作狀態(tài)，并且讓它們保持在良好工作狀態(tài)。 汽車知識為考慮在汽車制

45、造業(yè)就業(yè)的任何人都是同樣重要的。本文主要研究汽車主要組分框架、身體、引擎、傳動和底盤等。</p><p><b>　　底盤</b></p><p>　　汽車底盤是指對汽車底部所有結(jié)構(gòu)的描述?，F(xiàn)代汽車的主要結(jié)構(gòu)就是底盤結(jié)構(gòu)。大量的設(shè)計要求是在發(fā)動機，輪胎，車軸組件，變速器，轉(zhuǎn)向機構(gòu)，制動器和懸架安裝在鋼制框架上。在底盤的制造過程中主要取決于螺栓的靈活性。底盤基本框架的主

46、要組成部分是，發(fā)動機，動力傳動系統(tǒng)，輪胎，轉(zhuǎn)向裝置，制動器，懸架和汽車轉(zhuǎn)向所需要的所有部件。此外，其他幾個系統(tǒng)是也被安裝在底盤上。懸架系統(tǒng)無論是對穿越崎嶇道路的旅行車輛輪胎還是對在正確公路上行駛的汽車輪胎都有吸收道路沖擊的作用。當馬路不平引起汽車顛簸時，它也能允許輪胎上下移動。</p><p>　　另一個重要的底盤部分是轉(zhuǎn)向系統(tǒng)，它是駕駛員用來控制汽車行駛方向的系統(tǒng)。駕駛員控制的方向盤被連接在變速器上，使駕駛員的

47、控制力變強。這個變速器是被連接到車輛的前輪上。</p><p>　　汽車底盤的另一個主要組成部分是制動系統(tǒng)，它的作用是能使行駛車輛減速，使車輛停止，如果車輛已停止將保持平穩(wěn)狀態(tài)。當駕駛員踩動剎車踏板時，液壓油被迫離開主缸傳到四個輪子中，由液壓運動產(chǎn)生的鼓狀和盤式制動器作用使汽車的輪胎放慢或停止。</p><p><b>　　發(fā)動機</b></p><

48、;p>　　柴油發(fā)動機效率比汽油發(fā)動機的高35%-40% ，生產(chǎn)更多的電力單位燃料的燃燒。 The efficiency of the diesel engine has been greatly enhanced by the use of turbochargers and charged-air cooling, which has resulted in increased power and performance at

49、minimum fuel consumption rates.效率的柴油發(fā)動機已大大加強，使用渦輪增壓器和帶電空氣冷卻，從而導(dǎo)致更多的功率和性能，最低燃油消耗率。 Advancements in engine design also mean diesel is no longer considered a "dirty" fuel.先進的發(fā)動機設(shè)計也意味著柴油已不再被視為“骯臟”的燃料。 Fuel injectio

50、n and control strategies have produced the "smokeless" diesel.燃油噴射和控制戰(zhàn)略已產(chǎn)生的“無煙</p><p><b>　　離合器</b></p><p>　　離合器的主要功用是切斷和實現(xiàn)發(fā)動機對傳動系的動力傳遞，保證汽車起步時使發(fā)動機和傳動系平順的接合，確保汽車平穩(wěn)起步；在換擋時將發(fā)動

51、機和傳動系分離，減少變速器中換擋齒輪之間的沖擊；在工作中受到較大的動載荷時，能限制傳動系所承受的最大轉(zhuǎn)矩，以防止傳動系各部分零件因過載而損壞；有效地降低傳動系中的振動和噪音。</p><p><b>　　變速器</b></p><p>　　變速器是一個速力變化裝置,安裝在車輛的發(fā)動機和驅(qū)動輪之間.變速器用以改變發(fā)動機與驅(qū)動輪轉(zhuǎn)速間的比率關(guān)系.以適應(yīng)每種行駛狀況. 傳輸

52、裝置連接到背面的發(fā)動機發(fā)出的功率,從發(fā)動機驅(qū)動車輪. 這樣在一定的范圍內(nèi)汽車發(fā)動機的運行也會處于最佳狀態(tài)。</p><p><b>　　前橋</b></p><p>　　前橋是用來控制與固定在車橋兩端上的部件并通過相互連接的在前車橋末端的轉(zhuǎn)向節(jié)上進行轉(zhuǎn)動。為減輕整車的質(zhì)量,讓整車結(jié)構(gòu)更緊湊,采用膜片彈簧離合器,高速旋轉(zhuǎn)時其性能 穩(wěn)定，膜片彈簧離合器與螺旋彈簧離合器相

53、比有以下優(yōu)點,傳遞的轉(zhuǎn)矩較大而且平穩(wěn)，結(jié)構(gòu)簡單緊湊，操縱輕便,使用壽命長。</p><p><b>　　轉(zhuǎn)向器</b></p><p>　　轉(zhuǎn)向器以及轉(zhuǎn)向拉桿將兩根轉(zhuǎn)向軸連接起來并通過與轉(zhuǎn)向節(jié)相連的轉(zhuǎn)向盤轉(zhuǎn)向輪來轉(zhuǎn)動他們，轉(zhuǎn)向盤通過一根軸連接到了轉(zhuǎn)向搖臂的一端，變速器以及一個合適的連接軸通過駕駛員的操作而被執(zhí)行。先前的單個橋是通過彈簧來支持汽車，在這里的布置還了解到采

54、用獨立前懸已經(jīng)取代了車軸和彈簧的所一起布置形成的系統(tǒng)。在采用獨立懸架內(nèi)彈簧的控制下，車輪就可以獨立于其他自由的上下彈動了。</p><p><b>　　驅(qū)動橋</b></p><p>　　為了安裝好后邊的車輪，用半軸套管將半軸在輪子被使用的時候開始通過合適的軸承來驅(qū)動后橋，在發(fā)動機和兩個驅(qū)動車輪之間，為了促使驅(qū)動橋內(nèi)的驅(qū)動齒輪提供最終轉(zhuǎn)速，它在驅(qū)動橋中心的轉(zhuǎn)速不斷增大

55、，這種方向改變的驅(qū)動放把前部和后部到排列成一條直線的傳動軸的軸槽也是由這種部件提供的，它被稱為后置驅(qū)動橋.</p><p>　　差速器就是一種將發(fā)動機輸出扭矩一分為二的裝置，允許轉(zhuǎn)向時輸出兩種不同的轉(zhuǎn)速。在現(xiàn)代轎車，包括許多四輪驅(qū)動汽車上，都能找到差速器。這些四輪驅(qū)動車的每組車輪之間都需要差速器。同樣，其兩前輪和兩后輪之間也需要一個差速器。這是因為在汽車轉(zhuǎn)彎時，前輪和后輪對比后輪，走過的距離是不相同的。 部分四輪

56、驅(qū)動車前后輪之間沒有差速器。相反的，他們被固定聯(lián)結(jié)在一起，以至于前后輪轉(zhuǎn)向時能夠以同樣的平均轉(zhuǎn)速轉(zhuǎn)動。</p><p>　　每個車輪都設(shè)有自己單獨的半軸，通過差速器的差速齒輪連接到一起并在驅(qū)動橋的中心匯合，車輪都可以以不同的速度自由轉(zhuǎn)動，雖然他們都靠不同的齒輪提供同樣的驅(qū)動. </p><p><b>　　制動器</b></p><p>　　控

57、制或者阻止汽車運動，高效率的制動系統(tǒng)是汽車所不可缺少的，通過四個車輪起到剎車作用的部件有兩種類型，最起初的類型，一對剎車片被固定在一個固定的板子上，被擴大然后連接到安裝在輪子上旋轉(zhuǎn)式的制動鼓上，這樣可以控制到鼓的執(zhí)行動作。在現(xiàn)代的剎車類型上，一對或者多對的墊片被放置在一個靠在車橋或者車輪支撐連接的卡鉗上，被安裝在輪胎上側(cè)面的制動盤以用來緊緊的抓住這些墊片，通過在踏板施加壓力來實現(xiàn)剎車。手動杠桿的作用是通過一個單獨的連接來鎖定定位器。&l

58、t;/p><p>　　在制動器的操作方面，無論是機械式的制動系統(tǒng)還是液壓制動系統(tǒng)都可以被使用。機械式的制動系統(tǒng)需要通過機械傳動和流體液壓等過程進行液壓制動來進行應(yīng)用。</p><p><b>　　傳動軸和萬向節(jié)</b></p><p>　　讓變速器的輸出軸連接到后橋，這個被使用的長軸被稱之為傳動軸，這個傳動軸被一個管型套所密封或者被一個萬向節(jié)所打開

59、并裝在每個萬向節(jié)的末端，以用來通過因地面不同的變化而導(dǎo)致的各種形狀的傳動軸的連接的上下變化。萬向節(jié)不能消除，即使有最終傳動齒輪是安裝在固定在車輪獨立懸架的彈簧的車架上。即可以避免因路上的顛簸未對準而導(dǎo)致的汽車構(gòu)造的變形，又可以保證沒有它們的時候軸的準確性。</p><p>　　為了阻止在不平坦的路面上產(chǎn)生的振動傳輸?shù)狡噧?nèi)部，這里在汽車的車橋上采用了彈簧用來支持汽車保證汽車行駛的平順性。</p>&

60、lt;p>　　為了使垂直運動的車輪相對車架以及允許的部分軸在不同的角度進行運動,另外，越來越多的這樣布置已經(jīng)被應(yīng)用推廣。由驅(qū)動齒輪和差速器組成的一個系統(tǒng)在驅(qū)動橋殼軸管內(nèi)通過車輪上的獨立的并起彈簧作用的部件連接在車架上，這樣能把軸和部件連接在一起的裝置稱為萬向節(jié).</p><p><b>　　車輪</b></p><p>　　一共有四個輪子分別被安裝在汽車底盤的下

61、面，用以承載汽車和乘客的重量，同時也能夠驅(qū)動汽車使汽車能夠行駛。他們與橡膠輪胎相適應(yīng)，橡膠輪胎中充滿了由橡膠管在一定壓力的有效壓力下充入的空氣，這個壓力對承擔負載是非常必要的，這樣來汽車輪胎內(nèi)有了足夠的壓力足以用于裝載運送東西，同時能夠承受吸收由于路面不平整而產(chǎn)生的顛簸。憑借安裝在輪子與車輛之間的鋼板彈簧以及允許做垂直上下顛簸運動的車輛，在大部分的不均勻路面將會得到較好的行駛條件。 </p><p>　　當按

62、曲線行駛的時候，內(nèi)輪相對于外輪在轉(zhuǎn)彎的時候不得不行駛短一些的距離，但是后邊的兩個車輪當他們連接到一個軸的時候?qū)⑥D(zhuǎn)動的速度將達到一致，通過兩個車輪一起旋轉(zhuǎn)通過在路面造成的輪胎過度磨損而將會導(dǎo)致其中的一個或兩個輪子將會在路面上慢慢滑動，并會導(dǎo)致額外的車輪磨損以及軸上嚴重的扭轉(zhuǎn)負荷。除此之外，兩個車輪的完全相同的直徑(即通常不是如此)能在同一個速度行駛的時候車輪沒有打滑在一條筆直的路上。輪胎安裝在兩個對立面,可能會產(chǎn)生不同位置的磨損,甚至輪胎