1、强制降挡
1. Forced downshift
有些车主在驾驶自动变速器的车超车时 ，踩下油门踏板 ，会发现转速表突然上升 ，车速骤然升高 ，便认为车子出了问题 ，其实不然 。这种现象就是通常说的“强制降挡”功能 。短时超车 ，把油门踏板踩到底 ，自动变速器会被强制换回到挡 ，这是为了使汽车获取较大的输出扭矩 ，从而在短时间内起到明显的加速作用 ，实现超车的意图 。因此 ，这一现象是正常的 ，不是故障 但需要说明的是 ，强制降挡不宜经常使用 ，超车后应马上松开油门 ，以免因油温过高 、磨损过大降低执行元件的使用寿命 。
Some car owners, when driving an automatic transmission and overtaking, press the accelerator pedal and notice a sudden increase in the tachometer and speed. They believe that the car has a problem, but in fact, it is not. This phenomenon is commonly known as the "forced downshift" function. Short term overtaking, when the accelerator pedal is fully pressed, the automatic transmission will be forced back to the lowest gear, in order to obtain a larger output torque for the car, thereby playing a significant acceleration role in a short period of time and achieving the intention of overtaking. Therefore, this phenomenon is normal and not a malfunction. However, it should be noted that forced downshifting should not be used frequently. After overtaking, the accelerator should be immediately released to avoid reducing the service life of the actuator due to high oil temperature and excessive wear.
2、自动变速器汽车的拖曳
2. Towing of automatic transmission vehicles
自动变速器的汽车不能进行拖拽 。这是因为自动变速器在不工作时 ，油液都沉积在油底壳中 ，只有油泵工作时才将油液泵出润滑各部件 。因此 ，在拖拽过程中 ，发动机不工作 ，自动变速器油泵也就无法将自动变速器油泵出 ，长时间的拖拽就会导致自动变速器各执行元件过度磨损 ，造成严重的后果 。
Cars with automatic transmissions cannot be towed. This is because when the automatic transmission is not working, the oil deposits in the oil pan, and the oil is only pumped out to lubricate various components when the oil pump is working. Therefore, during the dragging process, if the engine does not work, the automatic transmission oil pump cannot pump out the automatic transmission oil pump. Prolonged dragging can cause excessive wear and tear on the various actuating components of the automatic transmission, resulting in serious consequences.
3、自动变速器油的使用
3. Use of Automatic Transmission Fluid
自动变速器油用来传递液力变矩器的扭矩 、控制执行元件的工作 、润滑和冷却自动变速器各部件 。长期使用的自动变速器油会掺入许多杂质 ，从而降低润滑效果 ，长时间在高温状态下工作 ，抗氧化性和热稳定性也会下降 ，使各执行元件磨损加剧 ，导致换挡冲击 ，离合器打滑等故障的产生 。因此 ，自动变速器油必须定期进行更换 。
Automatic transmission oil is used to transmit the torque of the hydraulic torque converter, control the operation of the actuating components, lubricate and cool various components of the automatic transmission. Long term use of automatic transmission oil can incorporate many impurities, thereby reducing the lubrication effect. Working at high temperatures for a long time can also reduce oxidation resistance and thermal stability, exacerbating the wear of various actuating components, leading to gear shifting impact, clutch slip, and other faults. Therefore, automatic transmission oil must be replaced regularly.
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