The performance of the automatic transmission oil is very important to the transmission. The gears bite each other and transmit the engine output power after changing the speed ratio. It needs to transfer huge torque between the gears. Therefore, it needs gear oil to lubricate and cool the gears. So it is very important for the maintenance of the lubrication system of the gearbox in daily life. Because of the complex working conditions, high speed and high contact pressure between gears and gears, the lubricant in gearbox plays an important role in the use of gearbox. First, after a certain number of kilometers or long-distance driving back, in addition to the normal maintenance of the engine, it is necessary to check whether there is oil leakage in the gearbox. Once it is found that there are oil leakage and oil leakage in the maintenance of professional automatic gearbox, it is necessary to immediately identify the causes and check the maintenance.

　　因?yàn)樽兯傧鋬?nèi)機(jī)油是通過(guò)齒輪之間相互咬合，將變速箱底部機(jī)油帶起飛濺到各個(gè)齒輪表面上去的，所以機(jī)油才能附著在齒輪表面上，形成一層保護(hù)油膜，以保證各個(gè)齒輪之間的良好潤(rùn)滑，如果變速箱內(nèi)機(jī)油低于正常范圍，就無(wú)法通過(guò)齒輪旋轉(zhuǎn)將機(jī)油飛濺到各個(gè)齒輪表面，由于失去油膜保護(hù)，齒輪高速旋轉(zhuǎn)，這時(shí)金屬表面產(chǎn)生巨大熱量，很容易就會(huì)把齒輪表面磨壞，嚴(yán)重時(shí)還會(huì)把齒輪表面燒蝕，使齒輪無(wú)法旋轉(zhuǎn)。其次，變速箱內(nèi)的潤(rùn)滑油也是要定期更換的，它使用的雖然也是機(jī)油，也存在氧化和變質(zhì)等問(wèn)題，由于變速箱內(nèi)的溫度要高于常溫，潤(rùn)滑油會(huì)被氧化，在溫度高時(shí)潤(rùn)滑油粘稠度降低，會(huì)變的很稀，它的吸附能力也會(huì)隨之降低，特別是對(duì)于一些老舊車(chē)輛而言，定期更換是至關(guān)重要的。

　　Because the oil in the gearbox splashes the oil belt at the bottom of the gearbox onto the surface of the gears by biting each other, the oil can be attached to the surface of the gears and form a protective film to ensure good lubrication between the gears. If the oil in the gearbox is below the normal range, it can not splash the oil into the gears by gear rotation. Surface, because of the loss of oil film protection, the gear rotates at high speed. At this time, the metal surface produces huge heat. It is easy to wear out the gear surface. In serious cases, the gear surface will be ablated, so that the gear can not rotate. Secondly, the lubricating oil in the gearbox should be replaced regularly. Although it uses engine oil, it also has some problems such as oxidation and deterioration. Because the temperature in the gearbox is higher than normal temperature, the lubricating oil will be oxidized. When the temperature is high, the viscosity of the lubricating oil will be reduced, which will become very thin, and its adsorption capacity will also be reduced, especially for some old vehicles, periodically more. Change is crucial.

　　要做到正確使用和維護(hù)變速箱，首先我們必須先了解一下變速箱里都有哪些部件，它們是怎樣工作的。對(duì)于一款手動(dòng)變速箱來(lái)說(shuō)，在內(nèi)部有兩根主軸，一根為輸入軸，通常我們把它稱(chēng)為一軸，它通過(guò)離合器與發(fā)動(dòng)機(jī)相連，并將發(fā)動(dòng)機(jī)輸出的動(dòng)力引入變速箱內(nèi)，并通過(guò)二軸也就是輸出軸將動(dòng)力傳遞出去，在一軸和二軸上有許多不同大小的齒輪，一軸上的齒輪是主動(dòng)齒輪，動(dòng)力來(lái)自發(fā)動(dòng)機(jī)，并與發(fā)動(dòng)機(jī)的轉(zhuǎn)速同步，二軸上的齒輪是從動(dòng)齒輪，它與車(chē)速是同步的，主動(dòng)齒輪和從動(dòng)齒輪之間相互咬合，并帶動(dòng)二軸的從動(dòng)齒輪一起旋轉(zhuǎn)，較后將發(fā)動(dòng)機(jī)的輸出動(dòng)力傳遞給汽車(chē)的驅(qū)動(dòng)輪上。在變速箱內(nèi)還有一個(gè)重要的部件就是同步器了，它對(duì)于換擋的平順性和換擋速度起著重要的作用。
                                  

　　To use and maintain the gearbox correctly, we must first understand what parts are in the gearbox and how they work. For a manual gearbox, there are two main axles inside, one is the input axle. Usually we call it a shaft. It connects with the engine through clutch, and introduces the power output from the engine into the gearbox, and transfers the power through two axles, that is, the output axle. There are many different sizes of gears on one and two axles. The gear on one axle is the driving tooth. Wheels, power from the engine, and synchronized with the engine speed, the two-axle gear is driven gear, it is synchronized with the speed of the car, the driving gear and driven gear bite each other, and drive the two-axle driven gear to rotate together, and finally the output power of the engine is transmitted to the driving wheel of the car. Synchronizer is another important part in the gearbox, which plays an important role in the smoothness and speed of shift.

　　現(xiàn)代變速箱內(nèi)的齒輪都是斜齒設(shè)計(jì)，斜齒與斜齒之間是長(zhǎng)咬合狀態(tài)，這樣就可以減輕齒輪在運(yùn)轉(zhuǎn)時(shí)的噪音，在斜齒的內(nèi)側(cè)還設(shè)計(jì)了一個(gè)直齒，并在兩個(gè)斜齒中間的軸上有花鍵，花鍵上有一個(gè)同步器環(huán)，在同步器環(huán)的兩邊有棘齒可在花鍵上左右滑動(dòng)，通過(guò)左右滑動(dòng)同步器環(huán)使環(huán)上棘齒的錐形缺口正好與斜齒內(nèi)側(cè)直齒的錐形突出相互咬合，在咬合前兩邊各有幾組錐面的金屬磨擦片，靠磨擦片的磨擦來(lái)實(shí)現(xiàn)齒輪與齒輪的同步，減輕換擋時(shí)打齒現(xiàn)象的發(fā)生。

　　The gears in modern gearbox are all helical teeth. The long occlusion between helical teeth and helical teeth can reduce the noise of gears in operation. A straight tooth is also designed on the inner side of helical teeth. There is a spline on the shaft between the two helical teeth. There is a synchronizer ring on the spline. The ratchets on both sides of the synchronizer ring can slide left and right on the spline, and the same can be achieved by sliding left and right. The step ring makes the conical notch of the ratchet on the ring coincide with the conical protrusion of the straight teeth on the inside of the helical teeth. There are several sets of metal friction plates on the two sides of the ring before and after the biting. The friction of the friction plates is used to realize the synchronization between the gear and the gear and reduce the occurrence of tooth beating during gear shifting.

　　不同的變速箱油對(duì)于自動(dòng)變速箱維修的性能也會(huì)帶來(lái)不同的影響。一般來(lái)說(shuō)，手動(dòng)變速箱的潤(rùn)滑油粘度較高，因?yàn)樗枰^好的吸附性。但粘度過(guò)高的潤(rùn)滑油會(huì)加大變速箱中部件的運(yùn)轉(zhuǎn)阻力，因此選用粘度更稀的潤(rùn)滑油有利于降低這些阻力。因此兩者時(shí)矛盾的，但高品質(zhì)的全合成齒輪油能做到兩者性能的兼顧。 化也細(xì)分化是市場(chǎng)和行業(yè)發(fā)展的必然，這樣才能夠給客戶提供更好的服務(wù)。

　　Different transmission oils have different effects on the performance of professional automatic transmission maintenance. Generally speaking, the lubricant viscosity of manual gearbox is higher, because it needs better adsorption. But the high viscosity lubricant will increase the resistance of the parts in the gearbox, so choosing the thinner viscosity lubricant will help to reduce these resistance. Therefore, the two are contradictory, but the high quality fully synthetic gear oil can achieve both performance. Specialization and subdivision are inevitable for the development of market and industry, in order to provide better services to customers.