【正文】 absolutely amazing! In this article, we39。s look at some of the parts: First Gear In first gear, the smaller sun gear is driven clockwise by the turbine in the torque converter. The pla carrier tries to spin counterclockwise, but is held still by the oneway clutch (which only allows rotation in the clockwise direction) and the ring gear turns the output. The small gear has 30 teeth and the ring gear has 72, so the gear ratio is: Ratio = R/S = 72/30 = :1 So the rotation is negative :1, which means that the output direction would be opposite the input direction. But the output direction is really the same as the input direction this is where the trick with the two sets of plas es in. The first set of plas engages the second set, and the second set turns the ring gear。s summarize the gear ratios, inputs and outputs: Gear Input Output Fixed Gear Ratio 1st 30tooth sun 72tooth ring Pla carrier :1 2nd 30tooth sun Pla carrier 36tooth ring :1 外文資料 8 Pla carrier 72tooth ring 36tooth sun :1 Total 2nd :1 3rd 30 and 36tooth suns 72tooth ring :1 OD Pla carrier 72tooth ring 36tooth sun :1 Reverse 36tooth sun 72tooth ring Pla carrier :1 Hydraulic System The automatic transmission in your car has to do numerous tasks. You may not realize how many different ways it operates. For instance, here are some of the features of an automatic transmission: ? If the car is in overdrive (on a fourspeed transmission), the transmission will automatically select the gear based on vehicle speed and throttle pedal position. ? If you accelerate gently, shifts will occur at lower speeds than if you accelerate at full throttle. ? If you floor the gas pedal, the transmission will downshift to the next lower gear. ? If you move the shift selector to a lower gear, the transmission will downshift unless the car is going too fast for that gear. If the car is going too fast, it will wait until the car slows down and then downshift. ? If you put the transmission in second gear, it will never downshift or up shift out of second, even from a plete stop, unless you move the shift lever. ? You39。 在一個(gè)帶著自動(dòng)變速器的汽車中沒有變動(dòng)的傳輸器。如果您想要 80里 /時(shí)的最高速度 ,那么齒輪比率會(huì)與大多數(shù)帶有手動(dòng)變速器的汽車的第三個(gè)齒輪相似。 齒輪 這一個(gè)自動(dòng)變速器使用一組齒輪 , 稱作復(fù)式的行星 齒輪 , 像行星齒輪一樣的外貌但是實(shí)際上像被聯(lián)合的二行星齒輪的作用。 你能意識(shí)到這也會(huì)導(dǎo)致較大的太陽(yáng)輪快速旋轉(zhuǎn) 。在第二階段 , 行星載體作為第二個(gè)星球齒輪集合的輸入 ,較大的太陽(yáng)齒輪 (被穩(wěn)固的 ) 作為太陽(yáng)，而環(huán)齒輪作為輸出 , 因此齒輪比率是 : 1/(1+ S/半徑 )=1/(1+36/72)=:1 為了使整體減少為二檔齒輪，我們通過第一階段和第二階段相乘（ x ），使它以 ： 1的速率減少，我們?cè)诘?二 , , 之前乘第一個(gè)級(jí)得到一個(gè) :1 還原。 如果你讀扭力變換器如何工作 , 你就學(xué)習(xí)扭力變換器的鎖定。 這樣汽車在引擎速度保持好很慢的狀態(tài)下以高速公路的速度行駛。 。 沒有他們，許多軟管必須和變速器的各種不同零件連接在一起。它被連接到外部 , 因此車行駛的多快， , 那么調(diào)速器就旋轉(zhuǎn)的多快。 調(diào)制器能感覺到多種壓力 ,當(dāng)引擎在一個(gè)較大的負(fù)荷之下的時(shí)候，它會(huì)降低。 如果車逐漸地加速，將會(huì)以一個(gè)較慢的速度變化。 每個(gè)換檔閥回應(yīng)特別定的壓力范圍 。這說明在換檔閥換檔之前來自調(diào)速器的壓力已經(jīng)夠高，足以帶動(dòng)第二擋齒輪。他們藉著泵提供流體，他們尋找適應(yīng)汽車跑的流體二條電路的當(dāng)中一個(gè)對(duì)控制。閥門壓力加大 ,節(jié)流閥的壓力也會(huì)加大。外部的齒輪跟著內(nèi)部齒輪轉(zhuǎn) , 而且當(dāng)齒輪旋轉(zhuǎn) , 流體被從廢油坑的一邊取出然后在進(jìn)入水力系統(tǒng)后從另一邊流出。它真的是自動(dòng)變速器的大腦 ,管理所有這些功能基至更多。 你可能不知道它有多少種不同的方式在操作。 比 率 =1/(1+ S/半徑 )=1/(1+36/72)=:1 所以引擎自轉(zhuǎn)每轉(zhuǎn)每三分之二，輸出裝置快速旋轉(zhuǎn)一次。 加速擋 由定義，一個(gè)加速擋輸出速度比輸入速度更快，它是速度的增加。 輸入的是小的太陽(yáng)齒輪 。 第一組行星答應(yīng)第二個(gè)組 ,第二組昨星轉(zhuǎn)動(dòng)環(huán)齒輪 。 手動(dòng)變速器和自動(dòng)變速器最關(guān)鍵的區(qū)別在于：手動(dòng)變速器的鎖和開不同的套齒輪對(duì)輸出軸達(dá)到各種各樣的齒輪比率，同時(shí)自動(dòng)變速器中相同的套齒輪會(huì)導(dǎo)致所有不同的齒輪比率。 基礎(chǔ)部分： 正如手動(dòng)變速器一樣 , 自動(dòng)變速器最初的工作是允許機(jī)器在很小的速度范圍內(nèi)操作，同時(shí)提供各種不同范圍的速度。s discuss what happens when the car accelerates gently. As car speed increases, the pressure from the governor builds. This forces the shift valve over until the first gear circuit is closed, and the second gear circuit opens. Since the car is accelerating at light throttle, the throttle valve does n