自动变速箱常见故障类型​

Common types of faults in automatic transmissions

换挡异常：这是自动变速箱最常见的故障表现之一。车辆可能出现换挡延迟，例如在加速时，发动机转速已升高，但变速箱未能及时升入相应挡位，导致动力输出滞后；或者换挡冲击明显，在换挡瞬间，车辆会产生强烈的顿挫感，如同被猛推或猛拉一下。这通常是由于变速箱内部的液压控制系统故障，如阀体磨损、电磁阀卡滞，影响了油压的正常调节，进而干扰了换挡操作；也可能是离合器片磨损严重，导致动力传递不顺畅，引发换挡异常。​

Abnormal gear shifting: This is one of the most common fault manifestations of automatic transmissions. The vehicle may experience gear shifting delays, such as when the engine speed has increased during acceleration, but the gearbox fails to shift into the corresponding gear in a timely manner, resulting in delayed power output; Or there may be a noticeable shift shock, and at the moment of shifting, the vehicle will experience a strong jerking sensation, as if it has been forcefully pushed or pulled. This is usually due to hydraulic control system failures inside the gearbox, such as valve body wear and solenoid valve jamming, which affect the normal adjustment of oil pressure and interfere with shifting operations; It may also be due to severe wear of the clutch plates, resulting in poor power transmission and abnormal gear shifting. ​

漏油问题：自动变速箱漏油较为直观且危害较大。常见的漏油部位包括油封处，油封老化、损坏后，无法有效密封变速箱油，致使油液渗出；还有变速箱油底壳，若油底壳遭受磕碰变形，或者密封垫老化，都可能导致漏油。变速箱油的减少会使内部零件得不到充分润滑，加剧磨损，严重时甚至可能引发变速箱报废。​

Oil leakage problem: Automatic transmission oil leakage is more intuitive and harmful. Common areas of oil leakage include the oil seal. After the oil seal ages or is damaged, it cannot effectively seal the transmission oil, resulting in oil leakage; There is also the gearbox oil pan. If the oil pan is damaged or deformed due to impact, or if the sealing gasket is aged, it may cause oil leakage. The reduction of transmission oil can result in insufficient lubrication of internal components, exacerbate wear, and in severe cases, even lead to the scrapping of the transmission. ​

变速箱打滑：车辆行驶中，发动机转速升高，但车速提升缓慢，或在爬坡、急加速等需要较大动力时，出现发动机空转现象，这很可能是变速箱打滑。其原因主要是离合器片或制动带磨损过度，摩擦力不足，无法有效传递动力；另外，变速箱油位过低、油质变差，不能形成良好的油压和润滑，也会导致打滑问题。​

Transmission slippage: When the engine speed increases while the vehicle is in motion, but the speed increases slowly, or when a large amount of power is needed for climbing, rapid acceleration, etc., the engine idles, which is likely due to transmission slippage. The main reason is excessive wear of clutch plates or brake belts, insufficient friction, and inability to effectively transmit power; In addition, if the transmission oil level is too low and the oil quality deteriorates, it cannot form good oil pressure and lubrication, which can also lead to slipping problems. ​

异常噪音：自动变速箱在运转过程中，若发出刺耳的啸叫声、低沉的轰鸣声或尖锐的金属摩擦声，都是异常噪音的表现。这可能是由于变速箱内部齿轮磨损、轴承损坏，齿轮之间的啮合不再顺畅，轴承无法平稳转动，从而产生噪音；油泵故障也可能引发噪音，油泵工作异常会导致油压不稳定，引起部件间的异常摩擦和振动。

Abnormal noise: If the automatic transmission makes a piercing whistling sound, low growling sound, or sharp metal friction sound during operation, it is a manifestation of abnormal noise. This may be due to internal gear wear and bearing damage in the gearbox, resulting in smoother meshing between gears and the inability of bearings to rotate smoothly, thereby generating noise; Oil pump failure may also cause noise, and abnormal operation of the oil pump can lead to unstable oil pressure, causing abnormal friction and vibration between components.

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