换挡顿挫感强烈​

Strong jerking sensation when shifting gears

换挡顿挫是自动变速箱常见故障之一，车主在驾驶过程中能明显感觉到车辆换挡时的冲击。这种情况通常是由多种原因导致的。一方面，变速箱油长期未更换，油品变质，无法起到良好的润滑和传递动力作用，使得换挡时各部件之间的摩擦增大，从而产生顿挫感。例如，一辆行驶了 8 万公里却从未更换过变速箱油的济南牌照轿车，车主近期频繁抱怨换挡时的顿挫感愈发严重。经维修人员检测，发现变速箱油已经变得污浊，粘度下降，内部金属碎屑增多。更换全新的变速箱油并对相关部件进行清洗后，换挡顿挫问题得到显著改善。另一方面，变速箱内部的电磁阀故障也可能引发换挡顿挫。电磁阀负责控制变速箱油的流向和压力，一旦出现故障，油压控制失常，就会导致换挡时机不准确，产生顿挫现象。​

Shifting jerks are one of the common faults in automatic transmissions, and car owners can clearly feel the impact of vehicle shifting while driving. This situation is usually caused by multiple reasons. On the one hand, if the transmission oil is not replaced for a long time, the oil will deteriorate and fail to provide good lubrication and power transmission, resulting in increased friction between various components during gear shifting, leading to a jerky feeling. For example, the owner of a Jinan license plate sedan that has driven 80000 kilometers without ever changing the transmission oil has recently complained about increasingly severe jerking when shifting gears. After inspection by maintenance personnel, it was found that the transmission oil had become dirty, with a decrease in viscosity and an increase in internal metal debris. After replacing the transmission oil with a brand new one and cleaning the relevant components, the problem of gear shifting jerky has been significantly improved. On the other hand, faults in the solenoid valves inside the gearbox may also cause gear shifting jerks. The solenoid valve is responsible for controlling the flow and pressure of the transmission oil. Once a malfunction occurs and the oil pressure control is disrupted, it can lead to inaccurate shifting timing and produce jerking. ​

变速箱打滑​

Transmission slippage

变速箱打滑表现为车辆在加速时，发动机转速迅速上升，但车速提升缓慢，就如同车轮在冰面上空转一般。造成变速箱打滑的主要原因往往是离合器片磨损过度。自动变速箱内的离合器片负责连接和断开不同的齿轮组，实现换挡操作。当离合器片长期使用，表面的摩擦材料逐渐磨损变薄，摩擦力下降，就容易出现打滑现象。比如一辆济南的出租车，由于长期在市区频繁启停，使用强度较大，自动变速箱的离合器片过早磨损，导致车辆加速无力，油耗明显增加。维修时，需要更换全新的离合器片，并对变速箱内部进行全面检查，确保其他部件未因打滑而受到损坏。​

Transmission slip is manifested as a rapid increase in engine speed during acceleration, but a slow increase in vehicle speed, as if the wheels are spinning on ice. The main cause of gearbox slippage is often excessive wear of clutch plates. The clutch plates in the automatic transmission are responsible for connecting and disconnecting different gear sets to achieve gear shifting operations. When the clutch plate is used for a long time, the friction material on the surface gradually wears down and becomes thinner, and the friction force decreases, making it easy to slip. For example, a taxi in Jinan, due to frequent starting and stopping in the city for a long time, has a high intensity of use, and the clutch plates of the automatic transmission wear out prematurely, resulting in weak acceleration and significantly increased fuel consumption. During maintenance, it is necessary to replace the clutch plates with brand new ones and conduct a comprehensive inspection of the interior of the gearbox to ensure that other components are not damaged due to slipping. ​

变速箱异响​

Abnormal noise from gearbox

行驶过程中，若自动变速箱发出异常声响，如 “嗡嗡” 声、“咔咔” 声等，这也是故障的明显信号。变速箱内部的齿轮磨损是导致异响的常见原因之一。齿轮在长期的啮合传动过程中，由于承受巨大的压力和摩擦力，齿面会逐渐出现磨损、剥落等现象，从而产生异响。此外，轴承损坏也可能引发异响。轴承负责支撑齿轮和轴的旋转，一旦轴承出现故障，其运转的平稳性受到影响，就会发出异常噪音。例如，在对一辆济南车主送来维修的 SUV 进行检查时，维修人员启动车辆，仔细聆听变速箱声音，发现有规律的 “咔咔” 声。经过拆解变速箱，确定是输入轴上的一个轴承损坏，更换新轴承后，异响问题得以解决。

During driving, if the automatic transmission makes abnormal noises such as "buzzing" or "clicking", this is also a clear signal of a malfunction. Gear wear inside the gearbox is one of the common causes of abnormal noise. During the long-term meshing transmission process of gears, due to the enormous pressure and friction, the tooth surface will gradually wear and peel off, resulting in abnormal noise. In addition, bearing damage may also cause abnormal noise. Bearings are responsible for supporting the rotation of gears and shafts. Once a bearing fails, its smooth operation is affected and abnormal noise is emitted. For example, when inspecting an SUV sent by a Jinan car owner for repair, the maintenance personnel started the vehicle, carefully listened to the sound of the gearbox, and found a regular "click click" sound. After disassembling the gearbox, it was determined that one of the bearings on the input shaft was damaged. After replacing the new bearing, the problem of abnormal noise was resolved.

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