某汽車出現(xiàn)變速箱故障，車主尋求幫助，經(jīng)過技師路試，判斷故障現(xiàn)象為：掛擋沖擊，同時(shí)1擋升2擋有沖擊，2擋升3擋打滑，確定為變速箱閥體損壞癥狀。引起變速箱閥體損壞的原因是什么呢？下面濟(jì)南自動(dòng)變速箱維修人員為您分析：

A certain car experienced a gearbox malfunction, and the owner sought help. After a road test by a technician, it was determined that the malfunction was caused by a gear shift impact, while there was an impact in the first and second gears, and a slipping in the second and third gears. It was determined that the symptom was a damaged transmission valve body. What is the cause of damage to the transmission valve body? Below, Jinan automatic transmission maintenance personnel will analyze for you:

很大一個(gè)因素是變速箱油，油用久了會(huì)變臟，里面就會(huì)有雜質(zhì)，潤滑性能下降，會(huì)引起閥體閥道內(nèi)的卡滯或者偏磨，時(shí)間久了造成升檔降檔沖擊。而且這款變速箱里程數(shù)一高，很容易出現(xiàn)密封圈老化漏油，包括油泵密封圈，變扭器油封都是常見漏油的地方。平時(shí)做保養(yǎng)的時(shí)候，舉升機(jī)上頂起來都可以看一下，出現(xiàn)滲油漏油的情況，建議盡早處理。

A major factor is transmission oil, which can become dirty and contain impurities after prolonged use, leading to a decrease in lubrication performance and causing sticking or eccentric wear in the valve body and passage. Over time, this can cause upshifting and downshifting impacts. Moreover, as the mileage of this gearbox increases, it is easy to experience aging and oil leakage of the sealing ring, including the oil pump sealing ring and torque converter oil seal, which are common sources of oil leakage. When performing maintenance, you can take a look at the lift when it is lifted. If there is any oil leakage, it is recommended to handle it as soon as possible.

變速箱和發(fā)動(dòng)機(jī)通過變扭器連接

The transmission and engine are connected through a torque converter

抬下的變速箱總成，圓形的這個(gè)腔體內(nèi)裝著變扭器

The lifted gearbox assembly has a circular cavity containing a torque converter

液力變扭器又稱“大力鼓”，發(fā)動(dòng)機(jī)動(dòng)力經(jīng)過飛輪輸出后傳遞給變扭器，帶動(dòng)變扭器運(yùn)轉(zhuǎn)，里面的渦扇設(shè)計(jì)會(huì)產(chǎn)生壓力，進(jìn)而實(shí)現(xiàn)變速箱工作。

The hydraulic torque converter, also known as the "powerful drum", transmits engine power to the torque converter after being output by the flywheel, driving it to operate. The turbofan design inside generates pressure, which in turn enables the gearbox to work.

這個(gè)是鼓輪外觀。發(fā)現(xiàn)變速箱故障后，必須去的維修變速箱的維修廠或者去對應(yīng)的汽車4S店進(jìn)行檢查。

This is the appearance of the drum. After discovering a gearbox malfunction, it is necessary to go to a professional gearbox repair shop or a corresponding brand of car 4S store for a comprehensive inspection.

常見的幾處漏油點(diǎn)，包括發(fā)動(dòng)機(jī)漏油，變速箱在車上的時(shí)候很難分辨出到底是哪一處漏油，從下面看油乎乎的一大片，需要有經(jīng)驗(yàn)的師傅來判斷。

There are several common oil leakage points, including engine oil leakage. It is difficult to distinguish which part of the transmission is leaking when it is in the car. From below, there is a large oily area that requires experienced technicians to judge.

拆掉油底殼，內(nèi)置閥體。

Remove the oil pan and insert the valve body.

閥體里面有閥道，包括電磁閥里面也有小閥芯移動(dòng)，如果閥道內(nèi)磨損導(dǎo)致不通暢或者電磁閥故障都會(huì)造成油壓不穩(wěn)定，產(chǎn)生換擋頓挫。

There is a valve passage inside the valve body, including a small valve core inside the solenoid valve. If the wear in the valve passage causes blockage or the solenoid valve malfunctions, it can cause unstable oil pressure and cause gear shifting jerks.

所以閥體要用專用設(shè)備經(jīng)過檢測，修復(fù)，或者更換。

So the valve body needs to be tested, repaired, or replaced with specialized equipment.

如果這篇文章對您有幫助的話可收藏，更多變速箱的故障案例可以關(guān)注“海森汽車深養(yǎng)護(hù)”微信公眾號(hào)，里面有許多案例分享，讓你修變速箱不會(huì)被坑。

If this article is helpful to you, you can collect it. More gearbox failure cases can follow the WeChat official account of "Heisen Auto Deep Maintenance". There are many cases to share, so that you can repair the gearbox without being trapped.

內(nèi)部的機(jī)械傳動(dòng)件，依次拿出油泵，差速器，離合器制動(dòng)器等。

Take out the internal mechanical transmission components, including the oil pump, differential, clutch brake, etc. in sequence.

差速器，在變速箱內(nèi)起到變速箱輸出軸和半軸連接的作用，同時(shí)還可以起到速比轉(zhuǎn)換的作用。

The differential plays a role in connecting the output shaft and half shaft of the gearbox, and also plays a role in speed ratio conversion.

剖開油泵檢查。

Cut open the oil pump for inspection.

檢查里面的離合器片，變速箱如果油壓長期不夠容易引起離合器片磨損，燒蝕，開起來會(huì)有打滑的感覺。

Check the clutch plates inside. If the oil pressure in the gearbox is not sufficient for a long time, it is easy to cause wear and erosion of the clutch plates, and there may be a feeling of slipping when driving.

制動(dòng)器的作用就是固定行星齒輪機(jī)構(gòu)中的元件，防止其轉(zhuǎn)動(dòng)，控制變速器的速比變化。制動(dòng)器有片式和帶式兩種形式，老款的很多是采用制動(dòng)帶形式。

The function of the brake is to fix the components in the planetary gear mechanism, prevent them from rotating, and control the speed ratio change of the transmission. There are two types of brakes: disc and band, with many of the older models using the brake band form.

超聲波清洗配件，因?yàn)樽兯傧涫莻€(gè)很精密的設(shè)備，長期的齒輪傳遞和離合器工作都會(huì)引起磨損，內(nèi)部的雜質(zhì)和油泥都需要清洗干凈，裝配完整，試車正常，故障消失。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://njzhuiri.cn咨詢了解！

Ultrasonic cleaning accessories, because the gearbox is a very precise equipment, long-term gear transmission and clutch operation can cause wear, and internal impurities and oil sludge need to be cleaned, assembled completely, tested normally, and the fault disappears. For more related content, come to our website http://njzhuiri.cn Consultation and understanding!