外文翻譯---汽車變速器設(shè)計(jì)

1、附錄Transmission designAs we all know automobile engine to a certain speed can be achieved under the best conditions, when compared issued by the power, fuel economy is relatively good. Therefore, we hope that the engine is always in the best of conditions to work under. However, the use of motor vehi

2、cles need to have different speeds, thus creating a conflict. Transmission through this conflict to resolve.Automotive Transmission role sum up in one sentence, called variable speed twisting, twisting or slow down the growth rate by increasing torsional. Why can slow down by twisting, and the growt

3、h rate but also by twisting? For the same engine power output, power can be expressed as N = WT, where w is the angular velocity of rotation. When N fixed, w and T is inversely proportional to the. Therefore, the growth rate will reduce twisting, twisting slowdown will increase. Automotive Transmiss

4、ion speed gear based on the principle of variable twisted into various stalls of different transmission ratio corresponding to adapt to different operational conditions. General to set up a manual gearbox input shaft, intermediate shaft and output shaft, also known as the three-axis, as well as Daod

5、ang axis. Three-axis is the main transmission structure, input shaft speed is the speed of the engine, the output shaft speed is the intermediate shaft and output shaft gear meshing between different from the speed. Different gears are different transmission ratio, and will have a different speed. F

6、or example Zhengzhou richan ZN6481W2G manual transmission car-SUV, its transmission ratio are: 1 File 3.704:1; stalls 2.202:1; stalls 1.414:1; stalls 1:1 5 stalls (speeding file) 0.802: 1. When drivers choose a launch vehicle stalls, Plectrum will be 1 / 2 file synchronization engagement with a back

7、 stall gear and output shaft lock it, the power input shaft, intermediate shaft and output shaft gear of a stall, a stall the output shaft gear driven, and the output shaft power will be transmitted to the drive shaft (red arrow). A typical stall Biansuchilun transmission ratio is 3:1, that is to sa

8、y three laps to the input shaft and output shaft to a circle. When the growth rate of car drivers choose two stalls, Plectrum will be 1 / 2-file synchronization and file a joint separation after 2 stall and lock the output shaft gear, power transmission line similar, the difference is that the outpu

9、t shaft gear of a stall 2 stall replaced by the output shaft gear driven. 2 stall Biansuchilun typical transmission ratio is 2.2:1, 2.2 laps to the input shaft and output shaft to a circle than a stall speed increase, lower torque. When refueling vehicle drivers growth stalls option 3, Plectrum to 1

10、 / 2 back to the free file-synchronization position, and also allows the 3 / 4 file synchronization Mobile stall until 3 in the output shaft gear lock, power can be into the shaft axis - intermediate shaft - the output shaft of the three stalls Biansuchilun, led through three stalls Biansuchilun out

11、put shaft. 3 stalls typical transmission ratio is 1.7:1, 1.7 laps to the input shaft and output shaft to a circle is further growth. When car drivers Option 4 refueling growth stalls, Plectrum will be 3 / 4 from the 3-file synchronization stall gear directly with the input shaft gear joint initiativ

12、e, and power transmission directly from the input shaft to the output shaft, the transmission ratio at 1:1, that the input shaft and output shaft speed the same. The driving force without intermediate shaft, also known as direct file, the file transmission than the maximum transmission efficiency. M

13、ost cars run-time files are used directly to achieve the best fuel economy. Shift into the first interval when, in a free transmission when Biansuchilun output shaft is not locked in, they cannot rotate the output shaft driven, not power output. General automotive manual transmission than the main 1

14、-4 stalls, usually the first designers to determine the minimum (one stall) and maximum (4 files) transmission ratio, the middle stall drive by geometric progression than the general distribution. In addition, there are stalls Daodang and speeding, speeding file is also known as the five stalls. Whe

15、n the car to accelerate to more than car drivers with the choice of five stalls, and a typical five-transmission ratio is 0.87:1, which is driven by a pinion gear, the gear when the initiative to 0.87 zone, passive gear have been transferred to a circle of the End. Dao Dang, the opposite direction t

16、o the output shaft rotation. If one pair of meshing gears when we reverse rotation, with a middle gear, it will become the same to the rotation. Use of this principle, we should add a gear Daodang the media will be rotational direction reversed, it will have a Daodang axis. Daodang installed in the

17、transmission shaft independent crust, and the intermediate shaft parallel axis gear with the intermediate shaft and output shaft gear meshing gears, will be contrary to the output shaft. Daodang usually used for the synchronization control also joins five stalls, stalls and Daodang 5 position in the

18、 same side. As a middle gear, the general transmission Daodang transmission ratio greater than 1 file transmission ratio, by twisting, steep slope with some vehicles encountered on the progress stalls falters with a Daodang boost. Ride from the driver of the considerations, better transmission stall

19、, stall adjacent stall more than the transmission changes the ratio of small, and easy to shift smoothly. However, the short comings of the stalls is more transmission structure is complicated, bulky, light vehicle transmission is generally 4-5 stalls. At the same time, transmission ratio is not int

20、egral, but with all of the decimal point, it is because of the gear teeth meshing is not caused by the whole multiples of two gear teeth can lead to the whole multiples of two meshing gears of uneven wear, making the tooth surface quality have a greater difference. Manual transmission and synchroniz

21、erManual transmission is the most common transmission, or MT. Its basic structure sum up in one sentence, is a two-axle shaft, where input shaft, the shaft axis and intermediate shaft, which constitute the main body of the transmission and, of course, a Daodang axis. Manual transmission known as man

22、ual gear transmission, which can be in the axial sliding gears, the gears meshing different variable speed reached twisting purpose. Typical manual transmission structure and principles are as follows. Input shaft also said that the first axis, and its front-end spline driven directly with the clutc

23、h disc sets with the spline , by the transfer of torque from the engine. The first axis of the intermediate shaft and gears meshing gears often, as long as the shaft axis to a turn, the intermediate shaft and gear also will be rotating. Vice also said intermediate shaft axis, the axis-even more than

24、 the size gear. Also known as the second output shaft axis, the axis of various sets of gear stall progress can be manipulated at any time in the role of the device and the corresponding intermediate shaft gear meshing, thus changing its speed and torque. With the end of the output shaft spline asso

25、ciated with the drive shaft through the drive shaft torque transmitted to the drive axle reducer. Thus, progress stalls drive transmission path is: input shaft gear often rodents - often rodents intermediate shaft gear - corresponding intermediate shaft gear - the second axis corresponding gear. Rev

26、ersing the gear shaft can be manipulated by the device pick in the axis movement, and the intermediate shaft and output shaft gear meshing gears, to the contrary to the direction of rotation output. Most cars have five stalls and a Daodang forward, a certain degree of each stall transmission ratio,

27、the majority of stalls transmission ratio greater than 1, 4 file transmission ratio of 1, known as direct stalls, and transmission ratio is less than 1 No. 5 stall called accelerated stall. Free at the output shaft gear in a position of non-engagement, unacceptable power transmission. The transmissi

28、on input shaft and output shaft rotational speed to their own, transform a stall when there is a synchronous. Two different rotational speed gear meshing force will impact the collision occurred, damage gear. Therefore, the old transmission shift to a feet-off approach, or stall on the location of t

29、he free stay for a while by stalls in the free position refueling doors, in order to reduce the speed differential gear. However, this operation is relatively more complicated and difficult to grasp accurate. So designers create a synchronized, and allows synchronization through the meshing of gears

30、 to be consistent speed and smooth meshing. At present Synchronous Transmission is based on the synchronization of inertia, mainly from joint sets, synchronous lock ring, and so on, it is characterized by friction on the role of synchronization. Splice sets Genlock engagement ring gear and the ring

31、gear when it had Chamfer (Lock angle), Genlock within the cone ring gear engagement with the question of cone ring gear contact friction. Lock and cone angle has been made in the design of an appropriate choice to be made friction cone of the teeth meshing with the ring gear quickly sets pace at the

32、 same time will have a Lock role and to prevent the gears meshing in sync before. When synchronization lock cone ring gear engagement with the question of cone ring gear after contact in the effects of friction torque gear speed quickly lower (or higher) with the same speed synchronous lock ring, th

33、e two synchronous rotation of the gear Genlock Central zero speed, thus moment of inertia also disappear, then in force under the impetus of engagement sets unhindered and synchronization lock ring gear engagement, and further engagement with the question of gear engagement and the completion Gear S

34、hift Process.The automatic gearboxThe automatic gearbox chooses to block the pole the equal to moving the stick shift of the gearbox, having generally below several blocks:P( parking), R( pour to block), N( get empty to block), D( go forward), S( or2, namely for 2 block soon), L.( or1, namely for 1

35、block soon)This several an usage for blocking a right usages coming driver the automatic gearbox is automotive of person to say particularly important, underneath let us very much familiar with once automatic gearbox eachly blockings main theme.The usage of the P ( the parking blocks)The launches th

36、e luck turns as long as choose to block the pole in driving the position, automatic gearbox car run about very easily.But park, choose to block the pole must pull into of P, from but pass the internal parking system in gearbox moves the device will output the stalk lock lives, combining to tense the

37、 hand system move, preventing the car ambulation.The usage of the R( pour to block)R a control for is pouring blocking, using inside wanting slicing recording, automatic gearbox car unlike moving gearbox car so can using half moving, so while reversing the car wanting special attention accelerating

38、pedal.The usage of the N( get empty to block)The N is equal to get empty to block, can while starting or hour of trailer usage.At wait for the signal or block up the car will often often choose to block the pole keeps in the of D, trampling at the same time the next system move.If time is very short

39、, do like this is an admission of, but if stop the time long time had better change into of N, combine to tense the hand system moves.Because choose to block the pole in driving the position, the automatic gearbox car has generally and all to drive the trend faintly, long hours trample the system mo

40、ve same as a deterrent this kind of trend, make gearbox oil gone up, the oil liquid changes in character easily.Particularly in the air condition machine work, launch the soon higher circumstance in machine bottom more disadvantageous.Some pilots for the sake of stanza oil, at made good time or go d

41、own slope will choose to block the pole pull the of N skids, this burn the bad gearbox very easily, launching the machine to revolves soon in the however because the gearbox outputs at this time the stalk turns soon very high, the oil pump provides the oil shortage, lubricating the condition worsen,

42、 burn the bad gearbox easily.The usage of the D( go forward to block)Will choose to block when is normal to drive the pole put in the of D, car can at 1 4 block( or 3 block) its change to block automatically.The of D drives the position most in common usely. What demand control is: Because the autom

43、atic gearbox is soon high and low with car to come to make sure to block according to the accelerator size a, so accelerate the pedal operation method is different, changing to block the hour of the car is soon too not same alike.If start hour quick accelerate the pedal tramples the bottom, rising t

44、o block the night, accelerating the ability is strong, arriving certain car soon behind, then will accelerate the pedal loosen to open very quickly, car can rise to block immediately, launch like this the machine voice is small, comfortable good.The another characteristics of the D is a compulsory l

45、ow blocking, easy to high speed the hour overtakes a car, will accelerate quickly in of D drove the pedal trample after all, connect the compulsory low fend off the pass and then can reduce to block automatically, the car accelerates very quickly, after overtaking a car loosen to open the pedal of a

46、cceleration to can rise to block automatically again.The usage of the S, of L low the usage that blockThe automatic gearbox in in is placed in the low blocking the scope on of S or of Ls, can usage under an etc. circumstance.It change to can make use of to launch well into of S or of Ls the mechanis

47、m move, avoiding the car wheel system move the machine over hot, cause the system move the effect descent while going down slope.But change into from the of D of S or of L, car soon cant higher than rise to block the car homologously soon, otherwise strong vibration in opportunity to launch, make ge

48、arbox oil hoicked, even will damage the gearbox.The is another at rain fog weather hour, if the road adheres to the term bad, can change into a position for or of L, fixing at somely first lowly blocking driving, doing not use can automatically changing blocking, in order to prevent the car beats sl

49、ippery.Must keep firmly in mind at the same time, beat the slippery hour can will choose to block the pole pushes into a motive for, cutting off launching machine, toing guarantee a car the safety.汽車變速器設(shè)計(jì) -英文文獻(xiàn)翻譯我們知道，汽車發(fā)動(dòng)機(jī)在一定的轉(zhuǎn)速下能夠達(dá)到最好的狀態(tài)，此時(shí)發(fā)出的功率比較大，燃油經(jīng)濟(jì)性也比較好。因此，我們希望發(fā)動(dòng)機(jī)總是在最好的狀態(tài)下工作。但是，汽車在使用的時(shí)候需要有不同的速

50、度，這樣就產(chǎn)生了矛盾。這個(gè)矛盾要通過變速器來解決。汽車變速器的作用用一句話概括，就叫做變速變扭，即增速減扭或減速增扭。為什么減速可以增扭，而增速又要減扭呢？設(shè)發(fā)動(dòng)機(jī)輸出的功率不變，功率可以表示為 N = wT，其中w是轉(zhuǎn)動(dòng)的角速度，T是扭距。當(dāng)N固定的時(shí)候，w與T是成反比的。所以增速必減扭，減速必增扭。汽車變速器齒輪傳動(dòng)就根據(jù)變速變扭的原理，分成各個(gè)擋位對(duì)應(yīng)不同的傳動(dòng)比，以適應(yīng)不同的運(yùn)行狀況。一般的手動(dòng)變速器內(nèi)設(shè)置輸入軸、中間軸和輸出軸，又稱三軸式，另外還有倒擋軸。三軸式是變速器的主體結(jié)構(gòu)，輸入軸的轉(zhuǎn)速也就是發(fā)動(dòng)機(jī)的轉(zhuǎn)速，輸出軸轉(zhuǎn)速則是中間軸與輸出軸之間不同齒輪嚙合所產(chǎn)生的轉(zhuǎn)速。不同的齒輪嚙合

51、就有不同的傳動(dòng)比，也就有了不同的轉(zhuǎn)速。例如鄭州日產(chǎn)ZN6481W2G型SUV車手動(dòng)變速器，它的傳動(dòng)比分別是：1擋3.704:；2擋2.202:1；3擋1.414:1；4擋1:1；5擋（超速擋）0.802:1。當(dāng)汽車啟動(dòng)司機(jī)選擇1擋時(shí)，撥叉將1/2擋同步器向后接合1擋齒輪并將它鎖定輸出軸上，動(dòng)力經(jīng)輸入軸、中間軸和輸出軸上的1擋齒輪，1擋齒輪帶動(dòng)輸出軸，輸出軸將動(dòng)力傳遞到傳動(dòng)軸上（紅色箭頭）。典型1擋變速齒輪傳動(dòng)比是3:1,也就是說輸入軸轉(zhuǎn)3圈，輸出軸轉(zhuǎn)1圈。當(dāng)汽車增速司機(jī)選擇2擋時(shí)，撥叉將1/2擋同步器與1擋分離后接合2擋齒輪并鎖定輸出軸上，動(dòng)力傳遞路線相似，所不同的是輸出軸上的1擋齒輪換成2擋

52、齒輪帶動(dòng)輸出軸。典型2擋變速齒輪傳動(dòng)比是2.2:1，輸入軸轉(zhuǎn)2.2圈，輸出軸轉(zhuǎn)1圈，比1擋轉(zhuǎn)速增加，扭矩降低。 當(dāng)汽車加油增速司機(jī)選擇3擋時(shí)，撥叉使1/2擋同步器回到空擋位置，又使3/4擋同步器移動(dòng)直至將3擋齒輪鎖定在輸出軸上，使動(dòng)力可以從軸入軸中間軸輸出軸上的3擋變速齒輪，通過3擋變速齒輪帶動(dòng)輸出軸。典型3擋傳動(dòng)比是1.7:1，輸入軸轉(zhuǎn)1.7圈，輸出軸轉(zhuǎn)1圈，是進(jìn)一步的增速。當(dāng)汽車加油增速司機(jī)選擇4擋時(shí)，撥叉將3/4擋同步器脫離3擋齒輪直接與輸入軸主動(dòng)齒輪接合，動(dòng)力直接從輸入軸傳遞到輸出軸，此時(shí)傳動(dòng)比1:1，即輸出軸與輸入軸轉(zhuǎn)速一樣。由于動(dòng)力不經(jīng)中間軸，又稱直接擋，該擋傳動(dòng)比的傳動(dòng)效率最高。

53、汽車多數(shù)運(yùn)行時(shí)間都用直接擋以達(dá)到最好的燃油經(jīng)濟(jì)性。換擋時(shí)要先進(jìn)入空擋，變速器處于空擋時(shí)變速齒輪沒有鎖定在輸出軸上，它們不能帶動(dòng)輸出軸轉(zhuǎn)動(dòng)，沒有動(dòng)力輸出。 一般汽車手動(dòng)變速器傳動(dòng)比主要分上述14擋，通常設(shè)計(jì)者首先確定最低（1擋）與最高（4擋）傳動(dòng)比后，中間各擋傳動(dòng)比一般按等比級(jí)數(shù)分配。另外，還有倒擋和超速擋，超速擋又稱為5擋。 當(dāng)汽車要加速超過同向汽車時(shí)司機(jī)選擇5擋，典型5擋傳動(dòng)比是0.87:1，也就是用大齒輪帶動(dòng)小齒輪，當(dāng)主動(dòng)齒輪轉(zhuǎn)0.87圈時(shí)，被動(dòng)齒輪已經(jīng)轉(zhuǎn)完1圈了。 倒擋時(shí)輸出軸要向相反方向旋轉(zhuǎn)。如果一對(duì)齒輪嚙合時(shí)大家反向旋轉(zhuǎn)，中間加上一個(gè)齒輪就會(huì)變成同向旋轉(zhuǎn)。利用這個(gè)原理，倒擋就要添加一

54、個(gè)齒輪做“媒介”，將軸的轉(zhuǎn)動(dòng)方向調(diào)轉(zhuǎn)，因此就有了一根倒擋軸。倒擋軸獨(dú)立裝在變速器殼內(nèi)，與中間軸平行，當(dāng)軸上齒輪分別與中間軸齒輪和輸出軸齒輪嚙合時(shí)，輸出軸轉(zhuǎn)向會(huì)相反。通常倒擋用的同步器也控制5擋的接合，所以5擋與倒擋位置是在同一側(cè)的。由于有中間齒輪，一般變速器倒擋傳動(dòng)比大于1擋傳動(dòng)比，增扭大，有些汽車遇到陡坡用前進(jìn)擋上不去就用倒擋開上去。從駕駛平順性考慮，變速器擋位越多越好，擋位多相鄰擋間的傳動(dòng)比的比值變化小，換擋容易而且平順。但擋位多的缺點(diǎn)就是變速器構(gòu)造復(fù)雜，體積大，現(xiàn)在輕型汽車變速器一般是45擋。同時(shí)，變速器傳動(dòng)比都不是整數(shù)，而是都帶小數(shù)點(diǎn)的，這是因?yàn)閲Ш淆X輪的齒數(shù)不是整倍數(shù)所致，兩齒輪齒數(shù)是整倍數(shù)就會(huì)導(dǎo)致兩齒輪嚙合面磨損不均勻，使得輪齒表面質(zhì)量產(chǎn)生較大的差異。手動(dòng)變速器與同步器手動(dòng)變速器是最常見的變速器，簡(jiǎn)稱MT。它的基本構(gòu)造用一句話概括，就是兩軸一中軸，即指輸入軸、軸出軸和中間軸，它們構(gòu)成了變速器的主體，當(dāng)然還有一根倒擋軸。手動(dòng)變速器又稱手動(dòng)齒輪式變速器，含有可以在軸向滑動(dòng)的齒輪，通過不同齒輪的嚙合達(dá)到變速變扭目的。典型的手動(dòng)變速器結(jié)構(gòu)及原理如下。 輸入軸也稱第一軸，它的前端花鍵直接與離合器從動(dòng)盤的花鍵套配合，從而傳遞由發(fā)動(dòng)機(jī)過來的扭矩。第一軸上的齒輪與中間軸齒輪常嚙合，只要軸入軸一轉(zhuǎn)，中間軸及其上的齒輪也隨之轉(zhuǎn)動(dòng)。中間軸也稱副軸，軸上固連多個(gè)大小不等的齒輪。輸出軸又稱第