變速箱：汽車的 “動力樞紐”

　　Gearbox: the "power hub" of automobiles

　　如果把汽車發動機比作人的心臟，那變速箱無疑就是關節，負責將發動機產生的動力，精準高效地傳遞給車輪，驅動汽車前行。可以說，發動機賦予汽車 “生命”，而變速箱則決定了汽車 “生活的品質”。它通過改變傳動比，讓發動機在不同路況下都能保持最佳工作狀態，無論是城市擁堵時的走走停停，還是高速路上的風馳電掣，都能游刃有余。

　　If the car engine is compared to the human heart, then the gearbox is undoubtedly the joint, responsible for accurately and efficiently transmitting the power generated by the engine to the wheels, driving the car forward. It can be said that the engine gives the car "life", while the gearbox determines the "quality of life" of the car. It maintains optimal engine performance in different road conditions by changing the transmission ratio, whether it's stop and go during city congestion or speeding on highways, it can handle it with ease.

　　變速箱種類繁多，常見的有手動變速箱（MT）、自動變速箱（AT）、無級變速箱（CVT）和雙離合變速箱（DCT） 。手動變速箱操作感強，能讓駕駛者充分體驗駕駛樂趣；自動變速箱操作簡便，適合城市通勤；無級變速箱換擋平順，油耗較低；雙離合變速箱換擋速度快，動力傳輸效率高。每種變速箱都有其獨特的優勢和適用場景，但無論哪種，都需要精心養護才能保持良好性能。

　　There are various types of transmissions, including manual transmission (MT), automatic transmission (AT), continuously variable transmission (CVT), and dual clutch transmission (DCT). The manual gearbox has a strong sense of operation, allowing drivers to fully experience the joy of driving; Automatic transmission is easy to operate and suitable for urban commuting; The continuously variable transmission shifts smoothly and has low fuel consumption; The dual clutch transmission has fast shifting speed and high power transmission efficiency. Each gearbox has its unique advantages and applicable scenarios, but regardless of which one, it requires careful maintenance to maintain good performance.

　　不同變速箱，養護有別

　　Different gearboxes require different maintenance

　　不同類型的變速箱，因其結構和工作原理各異，養護方式也大不相同。下面就為大家詳細介紹常見變速箱的養護要點。

　　Different types of gearboxes have different structures and working principles, and their maintenance methods are also very different. Below, we will provide a detailed introduction to the maintenance points of common gearboxes.

　　手動變速箱（MT）：簡單但不能忽視

　　Manual Transmission (MT): Simple but cannot be ignored

　　手動變速箱構造相對簡單，主要由變速傳動機構和操縱機構組成 。它通過手動撥動變速桿，改變變速器內的齒輪嚙合位置，實現不同的傳動比。這種變速箱工作穩定，可靠性高，深受駕駛愛好者喜愛。

　　The construction of a manual gearbox is relatively simple, mainly composed of a variable transmission mechanism and a control mechanism. It achieves different transmission ratios by manually shifting the gear lever to change the meshing position of the gears inside the gearbox. This type of gearbox works stably, has high reliability, and is deeply loved by driving enthusiasts.

　　在日常養護中，手動變速箱主要檢查是否有漏油、缺油情況。如果發現變速箱底部有油漬，或者車輛行駛時換擋變得生澀，就可能是漏油或缺油導致的，需要及時檢查維修。一般來說，手動變速箱的換油周期為 15 萬公里左右。不過，具體的換油里程還需根據車輛的使用情況和駕駛習慣來調整。比如，經常在擁堵路況行駛，或者駕駛風格比較激烈，就需要適當縮短換油周期。

　　In daily maintenance, manual transmissions are mainly inspected for oil leaks and shortages. If oil stains are found at the bottom of the gearbox, or if shifting gears becomes rough while driving, it may be caused by oil leakage or lack of oil, and it needs to be checked and repaired in a timely manner. Generally speaking, the oil change interval for manual transmissions is around 150000 kilometers. However, the specific oil change mileage needs to be adjusted according to the vehicle's usage and driving habits. For example, if driving frequently in congested road conditions or with a more aggressive driving style, it is necessary to shorten the oil change cycle appropriately.

　　液力自動變速箱（AT）：復雜精密需謹慎

　　Hydraulic automatic transmission (AT): complex and precise, requiring caution

　　液力自動變速箱結構復雜，核心部件有液力變矩器、行星齒輪組、離合器 / 制動器及其控制機構 。它通過液力變矩器實現發動機與變速箱的軟連接，使車輛起步和換擋更加平穩。行星齒輪組則負責實現不同的傳動比，滿足車輛在各種路況下的行駛需求。

　　The structure of hydraulic automatic transmission is complex, with core components including hydraulic torque converter, planetary gear set, clutch/brake and its control mechanism. It achieves a soft connection between the engine and gearbox through a hydraulic torque converter, making the vehicle start and shift more smoothly. The planetary gear set is responsible for achieving different transmission ratios to meet the driving needs of vehicles in various road conditions.

　　由于 AT 型號眾多，保養要求也有所不同。一般家用轎車的 4AT、6AT 變速箱，建議行駛 8 萬公里左右換一次油；而高檔位的 9AT 等變速箱，由于其內部結構更加精密，工作壓力更大，建議行駛 4 - 6 萬公里換一次油。此外，自動變速箱在換油時，建議將箱內的濾芯一起換掉。因為濾芯能夠過濾變速箱油中的雜質，保證油液的清潔度，延長變速箱的使用壽命。如果只換油不換濾芯，新油很快就會被污染，無法達到良好的保養效果。

　　Due to the large number of AT models, maintenance requirements also vary. It is recommended to change the oil every 80000 kilometers for the 4AT and 6AT transmissions of typical family cars; For high-end 9-speed automatic transmissions, due to their more precise internal structure and higher working pressure, it is recommended to change the oil every 40000 to 60000 kilometers. In addition, it is recommended to replace the filter element inside the automatic transmission when changing the oil. Because the filter element can filter impurities in the transmission oil, ensure the cleanliness of the oil, and extend the service life of the transmission. If only the oil is changed without changing the filter element, the new oil will quickly become contaminated and fail to achieve good maintenance results.

　　機械無級自動變速箱（CVT）：特殊結構特殊對待

　　Mechanical continuously variable transmission (CVT): special structure, special treatment

　　CVT 內部結構較為特殊，主要以鋼鏈帶傳動 。它通過兩個可變直徑的帶輪和一條鋼鏈帶，實現傳動比的連續變化，使車輛換擋更加平順，動力輸出更加線性。

　　The internal structure of CVT is relatively special, mainly driven by steel chain belt. It achieves continuous changes in transmission ratio through two variable diameter pulleys and a steel chain belt, making vehicle shifting smoother and power output more linear.

　　然而，正是由于這種特殊的傳動方式，CVT 箱內會沉淀許多硬碎雜質。這些雜質主要來自鋼鏈帶和帶輪的磨損，長期積累會影響變速箱的正常工作。因此，一般建議 CVT 變速箱行駛 6 - 8 萬公里換一次油。及時更換變速箱油，可以有效清除這些雜質，保持油液的良好性能，減少對變速箱內部部件的磨損。

　　However, it is precisely because of this special transmission method that many hard debris will settle inside the CVT box. These impurities mainly come from the wear of steel chain belts and pulleys, and long-term accumulation can affect the normal operation of the gearbox. Therefore, it is generally recommended to change the oil once when driving a CVT gearbox for 60000 to 80000 kilometers. Timely replacement of transmission oil can effectively remove these impurities, maintain the good performance of the oil, and reduce wear on internal components of the transmission.

　　雙離合自動變速箱（DSG）：干濕有別

　　Dual clutch automatic transmission (DSG): Different in dry and wet conditions

　　雙離合自動變速箱分為干式和濕式兩種形式 。它們都有兩套離合器，一套負責奇數檔，另一套負責偶數檔，通過離合器的交替工作，實現快速換擋。

　　The dual clutch automatic transmission is divided into two forms: dry and wet. They all have two sets of clutches, one for odd gears and the other for even gears. Through the alternating operation of the clutches, quick gear shifts are achieved.

　　干式 DSG 的傳動結構不復雜，工作相對穩定。由于其離合器片直接暴露在空氣中，依靠風冷散熱，所以一般行駛 10 萬公里換一次油。不過，干式 DSG 在頻繁啟停的路況下，容易出現過熱問題，所以在駕駛時要盡量避免長時間低速行駛和頻繁換擋。

　　The transmission structure of dry DSG is not complex and its operation is relatively stable. Due to its clutch plates being directly exposed to the air and relying on air cooling for heat dissipation, it is generally recommended to change the oil every 100000 kilometers of driving. However, dry DSGs are prone to overheating issues in frequent start stop road conditions, so it is important to avoid prolonged low-speed driving and frequent gear shifts while driving.

　　濕式 DSG 的離合器片浸泡在油液中，通過油液進行潤滑和散熱，散熱效率更高，可靠性也更強。但由于其傳動結構的技術要求，建議行駛 6 - 8 萬公里換一次油。濕式 DSG 更適合在城市擁堵路況下使用，能夠更好地應對頻繁啟停的情況。

　　The clutch plates of wet DSG are immersed in oil for lubrication and heat dissipation, resulting in higher heat dissipation efficiency and greater reliability. However, due to the technical requirements of its transmission structure, it is recommended to change the oil every 60000 to 80000 kilometers of driving. Wet DSG is more suitable for use in congested urban road conditions and can better cope with frequent start stop situations.

　　本文由 濟南自動變速箱維修  友情奉獻.更多有關的知識請點擊  http://www.ihudie.cn/  真誠的態度.為您提供為全面的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

　　This article is a friendly contribution from Jinan Automatic Transmission Maintenance For more related knowledge, please click http://www.ihudie.cn/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.