之所以4s店或專修店搞不定變速箱故障，動不動采取外科手術式的大拆大修，是因為他們并不知道到底是什么引發了變速箱故障，治標不治本，沒效果并不稀奇。下面
山東變速箱維修人員為您講解高溫之下變速箱故障問題。
The reason why 4S stores or specialized repair shops can't fix the gearbox failure and often take surgical overhaul is that they don't know exactly what caused the gearbox failure. It's not uncommon to treat the symptoms but not the root cause. Next, Shandong gearbox maintenance personnel will explain the gearbox fault under high temperature.
根據自動變速箱修理協會數據稱:“在所有自動變速箱故障中有90%以上是高溫過熱導致的。”汽車啟動不久后，自動變速箱油溫度會升高。當爬坡、高溫環境、持續的超高速行駛，市區內走走停停時，自動變速箱油溫度會超出安全溫度(80℃)。
According to the automatic transmission repair Association, more than 90% of all automatic transmission failures are caused by high temperature and overheating The temperature of the automatic transmission oil will rise soon after the vehicle is started. When climbing, high-temperature environment, continuous super high-speed driving, and stop and go in the urban area, the oil temperature of automatic transmission will exceed the safe temperature (80 ℃).
高溫會破壞自動變速箱油的質量和摩擦特性，加大摩擦與磨損，變速箱噪音隨之而來，同時，油泥(雜質或臟污)也會在變速箱內部產生(例如閥體、控制管路)，導致變速箱出現頓挫、沖擊。
High temperature will damage the quality and friction characteristics of the automatic transmission oil, increase friction and wear, and the noise of the transmission will follow. At the same time, oil sludge (impurities or dirt) will also be generated inside the transmission (such as the valve body and control pipeline), resulting in frustration and impact of the transmission.
如果溫度超過120℃，橡膠密封材料會開始變硬老化，密封不嚴滲漏，比較后導致液壓降。如果溫度更高，變速箱開始打滑，打滑又會反過來使溫度升得更高。(奧迪等車型會報警，進入變速箱保護模式)如不及時解決，變速箱會報廢。）
If the temperature exceeds 120 ℃, the rubber sealing material will start to harden and age, and the sealing is not tight and leaks, resulting in hydraulic pressure drop after comparison. If the temperature is higher, the transmission begins to slip, which in turn causes the temperature to rise higher. (Audi and other high-end models will give an alarm and enter the transmission protection mode.) if it is not solved in time, the transmission will be scrapped.)
一個定理:在正常的80℃工作溫度下，溫度每上升10℃，自動變速箱油的使用壽命會減半。例如，90℃時，自動變速箱油的使用壽命會降到75000公里。在100℃(這個溫度很多變速箱都會經常出現)時，使用壽命只有35000公里左右。120℃時，則是15000公里。再升高10攝氏度時，使用壽命只剩下7500公里。超過146或者148℃時，自動變速箱在1500或者2000公里前會燒掉。
A theorem: under the normal operating temperature of 80 ℃, the service life of automatic transmission oil will be halved for every 10 ℃ rise in temperature. For example, at 90 ℃, the service life of automatic transmission oil will be reduced to 75000km. At 100 ℃ (this temperature often occurs in many gearboxes), the service life is only about 35000km. At 120 ℃, it is 15000 km. When the temperature rises by 10 ℃, the service life is only 7500 km. When the temperature exceeds 146 or 148 ℃, the automatic transmission will burn out before 1500 or 2000 km.
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