1、強(qiáng)制降擋
1. Forced downshift
有些車(chē)主在駕駛自動(dòng)變速器的車(chē)超車(chē)時(shí) ，踩下油門(mén)踏板 ，會(huì)發(fā)現(xiàn)轉(zhuǎn)速表突然上升 ，車(chē)速驟然升高 ，便認(rèn)為車(chē)子出了問(wèn)題 ，其實(shí)不然 。這種現(xiàn)象就是通常說(shuō)的“強(qiáng)制降擋”功能 。短時(shí)超車(chē) ，把油門(mén)踏板踩到底 ，自動(dòng)變速器會(huì)被強(qiáng)制換回到擋 ，這是為了使汽車(chē)獲取較大的輸出扭矩 ，從而在短時(shí)間內(nèi)起到明顯的加速作用 ，實(shí)現(xiàn)超車(chē)的意圖 。因此 ，這一現(xiàn)象是正常的 ，不是故障 但需要說(shuō)明的是 ，強(qiáng)制降擋不宜經(jīng)常使用 ，超車(chē)后應(yīng)馬上松開(kāi)油門(mén) ，以免因油溫過(guò)高 、磨損過(guò)大降低執(zhí)行元件的使用壽命 。
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、自動(dòng)變速器汽車(chē)的拖曳
2. Towing of automatic transmission vehicles
自動(dòng)變速器的汽車(chē)不能進(jìn)行拖拽 。這是因?yàn)樽詣?dòng)變速器在不工作時(shí) ，油液都沉積在油底殼中 ，只有油泵工作時(shí)才將油液泵出潤(rùn)滑各部件 。因此 ，在拖拽過(guò)程中 ，發(fā)動(dòng)機(jī)不工作 ，自動(dòng)變速器油泵也就無(wú)法將自動(dòng)變速器油泵出 ，長(zhǎng)時(shí)間的拖拽就會(huì)導(dǎo)致自動(dòng)變速器各執(zhí)行元件過(guò)度磨損 ，造成嚴(yán)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、自動(dòng)變速器油的使用
3. Use of Automatic Transmission Fluid
自動(dòng)變速器油用來(lái)傳遞液力變矩器的扭矩 、控制執(zhí)行元件的工作 、潤(rùn)滑和冷卻自動(dòng)變速器各部件 。長(zhǎng)期使用的自動(dòng)變速器油會(huì)摻入許多雜質(zhì) ，從而降低潤(rùn)滑效果 ，長(zhǎng)時(shí)間在高溫狀態(tài)下工作 ，抗氧化性和熱穩(wěn)定性也會(huì)下降 ，使各執(zhí)行元件磨損加劇 ，導(dǎo)致?lián)Q擋沖擊 ，離合器打滑等故障的產(chǎn)生 。因此 ，自動(dòng)變速器油必須定期進(jìn)行更換 。
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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