對于自動擋汽車來說，很多人認為變速箱上的N擋沒什么卵用，因為他們平時開車很少用到N擋（空擋）。駐車時基本都是直接掛到P擋，而等紅燈時要么是掛P擋，要么是D擋+剎車，很少有人會掛入N擋，因為綠燈亮后再掛回D擋比較繁瑣、浪費時間，不如一直保持在D擋上，一旦綠燈亮了直接松開剎車就能走······然而，汽車工程師不是傻，既然設計了N擋，就一定有它存在的道理。事實上，對自動變速箱的保護就是N擋存在的非常大的意義。下面就來給大家介紹一下自動變速箱上的N擋在我們?nèi)粘Ｓ密囍卸加心男┳饔茫?/div>
For automatic cars, many people think that n gear on the gearbox is useless, because they rarely use n gear (neutral) when driving. When parking, they basically shift to gear P directly. When waiting for a red light, they either shift to gear P or gear d + brake. Few people will shift to gear n, because it is cumbersome and waste time to shift back to gear d after the green light is on. It's better to keep in gear d all the time. Once the green light is on, they can go by releasing the brake... However, automotive engineers are not stupid. Since they have designed gear n, There must be a reason for its existence. In fact, the protection of automatic transmission is of great significance for the existence of N gear. Now let's introduce the role of N gear on the automatic transmission in our daily vehicles:
駐車時N擋的作用
Function of gear n during parking
很多朋友在停車場停車時，一旦將車停入車位后，無非就是兩種做法：1、先掛P擋，再拉手剎(或電子手剎)走人；2、先拉手剎（或電子手剎），再掛P擋走人。其實這兩種做法在一定程度上都比較損車。對于這一種做法而言，因為自動變速箱的P擋都帶有鎖止功能，也就是說車輛內(nèi)部會有一個卡子扣住變速箱的齒輪來讓車達到靜止的狀態(tài)。如果是先掛入P擋再拉手剎的話，那么車輛停止時所受到的拉扯力基本都作用在了變速箱的齒輪和卡子上，長期下去會對變速箱的齒輪造成磨損，縮短變速箱的使用壽命；而如果是像二種做法那樣先拉手剎再掛P擋的話，在平地還好，變速箱齒輪和卡子受到的拉扯力會小很多，基本都作用在了手剎系統(tǒng)里的鋼絲拉線上了。
When many friends Park in the parking lot, once they park their car in the parking space, there are only two ways: 1. First shift to gear P, and then pull the hand brake (or electronic hand brake) to leave; 2. First pull the hand brake (or electronic hand brake), and then shift to p gear to leave. In fact, these two practices are more damaging to the car to a certain extent. For this approach, the P gear of the automatic transmission has a locking function, that is, there will be a clip inside the vehicle to fasten the gear of the transmission to make the vehicle reach a stationary state. If you first shift into gear P and then pull the handbrake, the pulling force received when the vehicle stops basically acts on the gears and clips of the gearbox, which will cause wear to the gears of the gearbox and shorten the service life of the gearbox in the long run; If you pull the handbrake first and then shift to gear P as in the second method, it's OK on the flat ground. The pulling force on the gearbox gear and clip will be much smaller, which basically acts on the steel wire cable in the handbrake system.
但如果地面不平是個斜坡的話，汽車向坡底下溜的那個慣性沖力不光會使手剎系統(tǒng)中的鋼絲拉線受力加大，也會在一定程度上增加變速箱齒輪和卡子的咬合力，這樣依舊會對手剎系統(tǒng)和變速箱齒輪造成磨損。所以，此時N擋的作用就顯現(xiàn)出來了。自動擋汽車在停車時的原則是：不論什么地形，一定要先讓車自己找平，這樣停車時才能大程度地減小變速箱齒輪和鋼絲拉線所受的拉扯力。而要達到找平的效果，使用N擋是很有必要的。因此自動擋汽車正確的做法應該是：停車踩住剎車――掛入N擋――松開腳剎車――拉手剎（或電子手剎）――進P檔――熄火走人。
However, if the ground is uneven and it is a slope, the inertial impulse of the car sliding towards the bottom of the slope will not only increase the stress on the steel wire stay wire in the handbrake system, but also increase the bite force of the gearbox gear and clip to a certain extent, which will still cause wear to the handbrake system and gearbox gear wheel. Therefore, the role of N gear appears at this time. The principle of automatic car parking is: no matter what terrain, the car must level itself first, so as to greatly reduce the pulling force on the gearbox gear and steel wire cable. To achieve the leveling effect, it is necessary to use n gear. Therefore, the correct way for an automatic car should be: stop and step on the brake - shift into gear n - release the foot brake - pull the hand brake (or electronic hand brake) - enter gear p - stop and leave.
等紅燈時N擋的作用
Function of N gear when waiting for red light
在諸如等紅燈或臨時停車等人這樣的短暫停車時，很多人要么就是D擋+剎車，要么就是直接掛P擋。在這里，小編要提醒大家一點，無論怎么樣，短暫停車時不要掛P擋。因為掛入P擋，變速箱的齒輪就會跟卡子相互咬合住，如果此時后方冷不丁的給你來個追尾，力度大點會直接把你的變速箱頂爛，即便力度輕也會頂斷你變速箱的齒輪，那樣維修起來不光麻煩，費用也很昂貴。
In such short-term parking as waiting for a red light or temporary parking, many people either shift to D + brake or directly shift to P. Here, Xiaobian would like to remind you that no matter what, don't shift to p gear when stopping for a short time. When you shift into gear P, the gear of the gearbox will bite each other with the clip. If the rear is cold at this time, you will have a rear end collision. If the force is strong, it will directly top your gearbox. Even if the force is light, it will break the gear of your gearbox. In that way, maintenance is not only troublesome, but also expensive.
如果在等紅燈（或臨時停車等人）時，一直保持D擋+剎車的話，變速箱并沒有切斷發(fā)動機與車輪之間的連接，這樣不光沒有降低發(fā)動機的負荷來達到省油的目的，發(fā)動機的振動也會很清晰地傳遞到車內(nèi)，帶動車廂一起輕微震動。因此，我們在短暫停車時，如果停車時間超過30秒，方式式是掛N擋+拉手剎（防止在不平的地面車輛出現(xiàn)溜車現(xiàn)象）。當然，對于有Auto Hold自動駐車功能的汽車來說，由于Auto Hold功能可以使車輛在短暫停車時自動啟動四輪制動，即便在D擋或N擋你也無需一直腳踩剎車或使用手剎，車子始終處于靜止狀態(tài)。因此，這時候可以不掛“N”擋，直接掛“D”擋也是可以的。
If you keep D gear + brake when waiting for a red light (or temporary parking, etc.), the gearbox does not cut off the connection between the engine and the wheels, which not only does not reduce the load of the engine to save fuel, but also the vibration of the engine will be clearly transmitted to the car and drive the car to vibrate slightly. Therefore, when we stop for a short time, if the parking time exceeds 30 seconds, the mode is to engage gear n + pull the hand brake (to prevent the vehicle from sliding on uneven ground). Of course, for vehicles with auto hold automatic parking function, because the auto hold function can automatically start the four-wheel brake when the vehicle stops for a short time, you don't need to step on the brake or use the hand brake all the time even in gear d or N, and the vehicle is always stationary. Therefore, it is possible not to shift to "n" gear at this time, but to shift to "d" gear directly.
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