【機(jī)械類畢業(yè)論文中英文對照文獻(xiàn)翻譯】汽車變速器變 速器的作用

【機(jī)械類畢業(yè)論文中英文對照文獻(xiàn)翻譯】汽車變速器變 速器的作用,機(jī)械類畢業(yè)論文中英文對照文獻(xiàn)翻譯,【機(jī)械類畢業(yè)論文中英文對照文獻(xiàn)翻譯】汽車變速器變,速器的作用,機(jī)械類,畢業(yè)論文,中英文,對照,對比,比照,文獻(xiàn),翻譯,汽車,變速器,作用 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 附 錄 附錄A 外文文獻(xiàn)原文 Automotive Transmission The role of transmission The output of the engine speed is very high, maximum power and maximum torque at a certain speed area. Engine in order to exert the best performance, it is necessary to have a variable-speed devices, to coordinate the engine speed and the actual wheel speed. Transmission process in the car, in between the engine and the wheels have a different gear ratio, by shifting the engine can work at their best performance of state power. Transmissions are the development trend of more and more complex, increasingly high degree of automation, automatic transmission will be the mainstream of the future. Transmission type Automotive automatic transmission has three common forms: namely, Automatic Transmission (AT), mechanical stepless automatic transmission (CVT), electric-controlled mechanical automatic transmission (AMT). At present, the most widely used is the AT, AT almost become synonymous with automatic transmission. AT Torque by Torque, and planetary gear and hydraulic control system components, through the hydraulic transmission and gear portfolio approach to achieve variable-speed torque variation. One of Hydraulic Torque is the most important parts, which pump wheels, turbines and components, such as guide pulley of the transmission of both torque and the role of clutch. AT compared with, CVT save the complex and cumbersome combination of variable-speed gear transmission, but the two groups to carry out variable-speed drive pulley. By changing the driving wheel and driven wheel contact belt speed radius. Canceled because of gear, so the transmission ratio can change speed more smoothly, without shifting sense of the sudden jump. AMT and Automatic Transmission (AT) are the same class has automatic transmission. It is in general based on the manual transmission, through the installation of microcomputer-controlled electric device to replace the original finish by the manual operation of the clutch of separation, joint, and block transmission of the election, motion shift, automatic shift implementation. The general structure of automobile transmission 1. Easy transmission of the basic structure: the shell, transmission and manipulation of some parts. (1) Shell: Shell is the basic pieces of support for the installation of transmission and storage of all parts lubricants. Has installed its bearing on the precision boring. Transmission under varying load, so the stiffness of the shell should be enough, there is to strengthen the wall, the shape of the complex, as many castings (gray cast iron materials, commonly used HT200). In order to facilitate the installation, transmission and manipulation of some Split parts are frequently made, cover with the housing connected by bolts and reliable positioning. Shell has come on up, I put the oil, check oil foot mouth, should also be taken into heat dissipation. (2) Transmission parts: is the gear, shaft, bearings and other transmission parts. Geometry axis through strength, stiffness calculation. Mainly due to decide on the stiffness, while the carbon steel and alloy steel elastic modulus almost equal, so the general use of carbon steel (commonly used 45 steel). Only one gear with the shaft or axle load made serious only by steel. Shaft and gear for many spline connection (for neutral good, reliable transmission of power, a small compressive stress, etc.). Spline shaft bearing parts and let the surface hardening treatment by the Department. Shaft with rolling bearing supports many, easy lubrication, high efficiency, small radial clearance, axial positioning should be reliable. Many ways to use splash lubrication (υ> 25m / s, as long as the appropriate viscosity apparently succumbed to the wall). (3) to manipulate parts: the main components located inside the transmission cover. 2. The composition of the structural characteristics of transmission: there is easy and efficient transmission, the advantages of simple easy-to-use-Jun mine but a few files, i changed the scope of small (traction, speed small), file number should be taken only at certain limited Cut used. If the increase in the scope of i, then increase the size so that transmission, axle span increase, both in order to increase the file-axis span of a few do not make too large, transmission can be formed. The composition of the so-called transmission, usually from both a combination of easy transmission, one of a few more files as the main transmission, less transmission known as the deputy. Transmission component of advantages: (1) can reduce the number of gears, and a few more files to reduce the number of gear the more obvious advantages. Easy compared with the transmission, it can shorten the length of shaft to reduce the transmission of the external size and weight, and can easily be more than one reverse. Into the file so the current number of files more than six hours, almost all transmission components. (2) transmission: the rate of change of Ω than large: if the main transmission gear ratio change rate Ωzu = 3, Vice transmission Ωfu = 4 is Ω = 12; easy transmission arrangement Ω = 12, the structure is often difficult to reasonable. Composed of transmission of disadvantage: (1) file groups have correspondence between the transmission ratio, so that each file is not 2, (the speed and traction) are ideal. (2) manipulation of trouble shifting, and sometimes both want to manipulate some speed, if not for the flower arrangement will shift memory. In order to reduce the control action, it is best to shift the order. Calling attention to the grade for this presentation ten out files so that the first group of transmission ratio is greater than all of the first file group 11 to the majority of phase transformation from the stall speed of just fixing the main purpose of this is the only way most convenient. 附錄B 外文文獻(xiàn)中文翻譯 汽車變速器 變速器的作用 發(fā)動機(jī)的輸出轉(zhuǎn)速非常高，最大功率及最大扭矩在一定的轉(zhuǎn)速區(qū)出現(xiàn)。為了發(fā)揮發(fā)動機(jī)的最佳性能，就必須有一套變速裝置，來協(xié)調(diào)發(fā)動機(jī)的轉(zhuǎn)速和車輪的實(shí)際行駛速度。變速器可以在汽車行駛過程中，在發(fā)動機(jī)和車輪之間產(chǎn)生不同的變速比，通過換檔可以使發(fā)動機(jī)工作在其最佳的動力性能狀態(tài)下。變速器的發(fā)展趨勢是越來越復(fù)雜，自動化程度也越來越高，自動變速器將是未來的主流。 變速器的型式 　 汽車自動變速器常見的有三種型式：分別是液力自動變速器 (AT)、機(jī)械無級自動變速器(CVT)、電控機(jī)械自動變速器(AMT)。目前應(yīng)用最廣泛的是AT，AT幾乎成為自動變速器的代名詞。 　　AT是由液力變扭器、行星齒輪和液壓操縱系統(tǒng)組成，通過液力傳遞和齒輪組合的方式來實(shí)現(xiàn)變速變矩。其中液力變扭器是最重要的部件，它由泵輪、渦輪和導(dǎo)輪等構(gòu)件組成，兼有傳遞扭矩和離合的作用。 　　與AT相比，CVT省去了復(fù)雜而又笨重的齒輪組合變速傳動，而是兩組帶輪進(jìn)行變速傳動。通過改變驅(qū)動輪與從動輪傳動帶的接觸半徑進(jìn)行變速。由于取消了齒輪傳動，因此其傳動比可以隨意變化，變速更加平順，沒有換擋的突跳感。 AMT和液力自動變速器（AT）一樣是有級自動變速器。它在普通手動變速器的基礎(chǔ)上，通過加裝微電腦控制的電動裝置，取代原來由人工操作完成的離合器的分離、接合及變速器的選檔、換檔動作，實(shí)現(xiàn)自動換檔。 汽車變速器一般結(jié)構(gòu) 1.簡單式變速器的基本結(jié)構(gòu)：由殼體、傳動部分和操縱部分組成。 　 (1)殼體：殼體是基礎(chǔ)件，用以安裝支承變速器全部零件及存放潤滑油。其上有安裝軸承的精確鏜孔。變速器承受變載荷，所以殼體應(yīng)有足夠的剛度，內(nèi)壁有加強(qiáng)，形狀復(fù)雜，多為鑄件(材料為灰鑄鐵，常用HT200)。 　　為便于安裝，傳動部分和操縱部分常做成剖分式，箱蓋與殼體用螺栓聯(lián)接并可靠定位。殼體上有加油、放油口，油面檢查尺口，還應(yīng)考慮散熱。 　　(2)傳動部分：是指齒輪、軸、軸承等傳動件。軸的幾何尺寸通過強(qiáng)度、剛度計(jì)算確定。因主要決定于剛度，而碳鋼與合金鋼彈性模量近乎相等，所以一般用碳鋼(常用45鋼)。只有齒輪與軸制成一體或軸載荷嚴(yán)重才用合金鋼。軸與齒輪多為花鍵聯(lián)接(對中性好，能可靠傳遞動力，擠壓應(yīng)力小等)。軸的花鍵部分和放軸承處經(jīng)表面淬火處理。軸多用滾動軸承支承，潤滑簡單，效率高、徑向間隙小，軸向定位應(yīng)可靠。潤滑方式多用飛濺(υ>25m／s，只要粘度適宜可甩到壁上)。 　　(3)操縱部分：主要零件位于變速器蓋內(nèi)。 2.組成式變速器結(jié)構(gòu)特點(diǎn)：簡單式變速器有效率高、構(gòu)造簡單使用方便鈞優(yōu)點(diǎn)礦但檔數(shù)少，i變化范圍小(牽引力、速度范圍小)，只宜在檔數(shù)不多的某些車工采用。若增加i的范圍，則使變速器尺寸加大，軸跨度增加，為了既增加檔數(shù)又不使軸跨度過大，可采用組成式變速器。所謂組成式變速器，通常由兩個簡單式變速器組合而成，其中檔數(shù)較多的稱為主變速器，較少的稱為副變速器。 　　組成式變速器的優(yōu)點(diǎn)： 　　(1)可以減少齒輪個數(shù)，而且檔數(shù)越多減少齒輪個數(shù)的優(yōu)點(diǎn)愈明顯。同簡單式變速器相比，它可縮短軸的長度，減少整個變速器的外部尺寸和重量，并且能方便地得到不止一個倒檔。所以當(dāng)前進(jìn)檔數(shù)超過六個檔時(shí)，幾乎都用組成式變速器。 　　(2)傳動：比變化率Ω大：若主變速器傳動比變化率Ωzu=3，副變速器Ωfu=4，則Ω=12；若使簡單式變速器Ω=12，結(jié)構(gòu)往往很難合理。 　　組成式變速器的缺點(diǎn)： 　 (1)檔組間傳動比有對應(yīng)關(guān)系，不易使每檔的2，(速度及牽引力)都很理想。 　 (2)換檔操縱麻煩，有時(shí)要操縱兩個變速部分，若為插花換檔還不便記憶。 　　為了減少操縱動作，最好能順序換檔。為此要求重視檔次編排十使第滅檔組傳動比全部大于第11檔組，達(dá)到多數(shù)相領(lǐng)排檔的變換只需操縱主變速的目的，這樣才最為方便。 6