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外文原文: he it to it of or on or on to to he of a is to to s in to s as as to A in is a of a a on or ,4on A of a to to to be a or on it a a a to to to be a is to to to to is to of is to is a a A is to a a a is of is in s or s to of of a of or a a a a an a do it in a an is of to to in an of of is in an in in of a as in a in to An a is by s in to to s a a is by he to is of a in a to to of by It an or to s a to is to a or 5is is by a by to a in at of a a 5In of is in by on in is of of in of in a to is to of is to a or or or a in or as is in a to or of to or WD is of WD it is of he to or an is to is to by as so at 5a in on is to on is to it is to of is 5 to on a is a a of to to up to a as of at up 8% or in On if or So it is to or at do to be or be At at in no to is to up by is by as . 0 .5 of 0 00. in of (as in (is of is is as 20 25 a 14- 02/1 is to of of in a of to of is a 6 to by or In is a of as do he in a is is of in by of in of of to of In of to of to (of in in of In a to be by of by of is by by of to 0,000 ,000 to 50 In it be to so on or in of of be in to an to An is in To as as (In is to to a a a to a 0 or a so do if (If is of a an to to at 0% or of to of in a be on or on or a of is by of at in is by of of of by of of of in in in to a in an to an as in or or or In or to In in a in be by by by if in of a “to in as If by be In be by or of If is of a of is as PL vs is by an in n 11 to n 15 it is an be on of it to of an to be to a A to of a in On of of no or be by by in an in a is 中文譯文: 動(dòng)力傳動(dòng) 系 A 動(dòng)力傳動(dòng)系有兩個(gè)作用:它把動(dòng)力從發(fā)動(dòng)機(jī)傳送到驅(qū)動(dòng)輪上,并且改變扭矩的大小。動(dòng)力傳動(dòng)系包括: 造動(dòng)力; 是手動(dòng)就是自動(dòng); 用在手動(dòng)變速器或者液力變矩器; 動(dòng)力從變速器傳到差速器; 動(dòng)力傳到兩個(gè)驅(qū)動(dòng)軸上。 手動(dòng)變速器 手動(dòng)變速器的作用是,把發(fā)動(dòng)機(jī)動(dòng)力傳送到傳動(dòng)軸和驅(qū)動(dòng)輪。變速器內(nèi)的齒輪,改變車輛驅(qū)動(dòng)輪和發(fā)動(dòng)機(jī)之間轉(zhuǎn)速和扭矩的比例。這樣保持發(fā)動(dòng)機(jī)的輸出盡可能的靠近改變路面速度和最低速度。 一個(gè)手動(dòng)的驅(qū)動(dòng)橋,是一個(gè)由手動(dòng)變速器,差速器,傳動(dòng)軸組成 的。大多數(shù)前輪驅(qū)動(dòng)汽車裝有一個(gè)驅(qū)動(dòng)橋。這樣的驅(qū)動(dòng)橋也能在一些前置引擎或者后輪驅(qū)動(dòng),四輪驅(qū)動(dòng)的汽車,在后置引擎和后輪驅(qū)動(dòng)的汽車上看到。 一個(gè)手動(dòng)變速器包括使用一個(gè)離合器來消除發(fā)動(dòng)機(jī)扭矩到變速器輸入軸。離合器允許這樣漸漸發(fā)生以至于汽車能夠啟動(dòng)。 手動(dòng)變速器通常有四到五個(gè)檔位,而且一般有“超速檔”,對于在路上的燃油經(jīng)濟(jì)性這樣就意味著輸出軸比輸入軸轉(zhuǎn)的更快。當(dāng)你使用變速器的時(shí)候,要維持同樣的速度,將減少發(fā)動(dòng)機(jī)轉(zhuǎn)速的三分之一。 離合器 駕駛手動(dòng)擋汽車,你踩下離合器,嚙合了齒輪,然后松掉離合器而汽車會(huì)適應(yīng)動(dòng)力前 進(jìn)。離合器可使車輛啟動(dòng)后發(fā)動(dòng)機(jī)的動(dòng)力被逐漸的加載,并可通過切斷動(dòng)力防止換擋時(shí)齒輪被咬碎。離合器嚙合時(shí)把發(fā)動(dòng)機(jī)動(dòng)力傳送到變速器和驅(qū)動(dòng)輪。離合器分離停止動(dòng)力傳輸,在沒有動(dòng)力傳到驅(qū)動(dòng)輪上的情況下,發(fā)動(dòng)機(jī)可以持續(xù)運(yùn)轉(zhuǎn)。 離合器基本的部件是:飛輪,離合器盤,壓力盤,分離軸承和聯(lián)接裝置。 飛輪被螺栓固定在發(fā)動(dòng)機(jī)的曲軸上。它的主要作用是傳送發(fā)動(dòng)機(jī)扭矩從發(fā)動(dòng)機(jī)到變速器。 離合器盤基本就是一塊鋼板,在飛輪和壓力盤中間覆蓋了一種耐摩擦材料。 離合器盤螺栓連接在飛輪上。它包括一張薄片金屬封蓋,彈簧 ,一個(gè)給離合器盤提供摩擦表面的金屬壓力環(huán)。 分離軸承是離合器操縱機(jī)構(gòu)的中心。當(dāng)離合器踏板踩下時(shí),分離軸承指向飛輪,壓盤推進(jìn)釋放了擋板然后移動(dòng)壓盤彈簧片到壓盤彈簧彈力頂。 聯(lián)接裝置成倍地傳送駕駛員腿部力量到離合器壓盤的膜片。一個(gè)機(jī)械離合器連接裝置通常由離合器踏板,一系列連接桿臂或者一組電纜。一個(gè)液壓離合器聯(lián)接裝置大體上是由一個(gè)離合器制動(dòng)缸和儲(chǔ)存器,一組液壓管路和一個(gè)從動(dòng)缸。 自動(dòng)變速器
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