我們知道，自動變速箱是個非常復雜精密的儀器，它的作用是把發動機的動力傳遞到車輛的行駛系統上。

　　We know that an automatic transmission is a very complex and precise instrument, whose function is to transfer the power of the engine to the vehicle's driving system.

　　在傳遞動力的過程中，變速箱有個很重要的部件，叫“液力變矩器”（Torque Converter，下文簡稱“TC”）

　　In the process of transmitting power, the gearbox has an important component called the "Torque Converter" (TC)

　　我們先來看一個例子：一個風扇通上電，對著另一個沒通電的風扇猛吹，這個時候那個風扇扇葉肯定也會被吹動。而TC，工作原理就是那么簡單。

　　Let's take an example first: when a fan is powered on and blows fiercely at another fan that is not powered on, the fan blades will definitely be blown as well. And TC, the working principle is so simple.

　　不過在兩個風扇之間，傳遞動力的是空氣，而TC里面傳遞動力的就是變速箱油，這就是“液力變矩器”的“液”字所指。

　　However, between the two fans, the power is transmitted by air, while in TC, the power is transmitted by transmission oil, which is what the word "liquid" in "hydraulic torque converter" refers to.

　　變速箱油的第一個作用就是傳遞動力。但是不僅是液力變矩器需要變速箱油傳遞動力哦，變速箱內的很多液壓機械也需要變速箱油來推動，比如負責換擋的閥體。

　　The first function of transmission oil is to transmit power. But not only do hydraulic torque converters require transmission oil to transmit power, but many hydraulic machinery inside the gearbox also require transmission oil to drive, such as the valve body responsible for shifting gears.

　　為了傳遞動力，變速箱油還必須有抗泡性，就是抵抗生成泡沫的能力。在傳遞動力的過程中，液體因為其不可被壓縮而效率很高。但是空氣如果混進液體中，通過液力變矩器的不停攪和，就會產生了泡沫，顯著降低傳遞動力的效率。

　　In order to transmit power, the transmission oil must also have anti foaming property, that is, the ability to resist the generation of foam. In the process of transmitting power, liquids are highly efficient due to their incompressibility. However, if air is mixed into the liquid and continuously stirred by the hydraulic torque converter, foam will be produced, which will significantly reduce the efficiency of power transmission.

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　　在液力變矩器后面，是變速箱豐富多彩復雜難懂的機械結構。這些機械結構也都是齒輪、摩擦片等組成，和其他機械一樣，這些相互接觸傳遞動力的機械結構也需要潤滑和散熱。

　　Behind the hydraulic torque converter, there is a rich and complex mechanical structure of the gearbox that is difficult to understand. These mechanical structures are also composed of gears, friction plates, and other components. Like other machinery, these mechanical structures that transmit power through mutual contact also require lubrication and heat dissipation.

　　這就是變速箱油的第二個作用：潤滑和散熱。

　　This is the second function of transmission oil: lubrication and heat dissipation.

　　相比于發動機用的機油而言，變速箱油的性能要求更加復雜，因為機油并不承擔傳遞動力的作用。因為變速箱技術的不斷發展，為了滿足其要求，變速箱油的性能要求也不斷提升，相關制造標準也是越來越復雜

　　Compared to engine oil, the performance requirements of transmission oil are more complex because oil does not play a role in transmitting power. Due to the continuous development of transmission technology, in order to meet its requirements, the performance requirements of transmission oil are also constantly improving, and related manufacturing standards are becoming increasingly complex

　　廠商越來越重視變速箱油，也是因為它是確保變速箱總成正常工作的根基要素。因為變速箱性能千差萬別，不同型號變速箱的性能訴求也是千差萬別。而變速箱油是變速箱執行換擋動作、散發熱量和潤滑齒輪的載體，自然要承擔很多的考驗。

　　Manufacturers are increasingly valuing transmission oil because it is a fundamental element in ensuring the normal operation of the transmission assembly. Because the performance of transmissions varies greatly, the performance demands of different models of transmissions also vary greatly. And transmission oil is the carrier for the gearbox to perform shifting actions, dissipate heat, and lubricate gears, naturally bearing many challenges.

　　舉個例子：自動變速箱要換擋時，都是控制電腦發出信號，而閥體負責執行。閥體的力量源泉則是變速箱油傳遞過來的液壓力。我們知道液壓力的大小和液體的粘度息息相關，如果粘度發生巨大變化，那么設計階段所做的匹配、計算就全部失效了。

　　For example, when an automatic transmission needs to shift gears, the control computer sends a signal, and the valve body is responsible for executing it. The power source of the valve body is the hydraulic pressure transmitted by the transmission oil. We know that the magnitude of liquid pressure is closely related to the viscosity of the liquid. If there is a significant change in viscosity, all matching and calculations made during the design phase will be ineffective.

　　這也是長期使用后的變速箱，都會出現換擋頓挫，而換過變速箱油后，情況就會明顯改善的原因——換油前，老油的粘度已經無法和新油相比；換油后則恢復到設計時的理想狀態。

　　This is also the reason why gearboxes that have been used for a long time will experience shifting jerks, and after changing the transmission oil, the situation will significantly improve - before changing the oil, the viscosity of the old oil can no longer be compared to the new oil; After changing the oil, it will return to the ideal state as designed.

　　在一些極端的案例中，用錯了變速箱油，還會導致變速箱的燒毀。因為不僅僅是粘度經過仔細計算、匹配，散熱也是經過精心設計的。

　　In some extreme cases, using the wrong transmission oil can also cause the transmission to burn out. Because not only is viscosity carefully calculated and matched, but heat dissipation is also carefully designed.

　　如果變速箱油的承載熱量的能力過強或過弱，都會導致散熱機構效能降低，從而影響散熱，導致變速箱燒毀。

　　If the heat carrying capacity of the transmission oil is too strong or too weak, it will lead to a decrease in the efficiency of the heat dissipation mechanism, thereby affecting heat dissipation and causing the transmission to burn out.

　　本文由濟南變速箱油提供技術支持，更多的詳細精彩內容請點擊我們的網站http://www.ihudie.cn，我們將會全心全意為您提供滿意的服務。

　　This article is supported by Jinan transmission oil technology. For more detailed and exciting content, please click on our website http://www.ihudie.cn We will wholeheartedly provide you with satisfactory service.