汽車的供電(dian)系統是由汽車蓄(xu)電(dian)池和發電(dian)機組(zu)成,發電(dian)機負責(ze)對(dui)電(dian)池進(jin)行(xing)(xing)充電(dian),使(shi)電(dian)池長(chang)期(qi)保持在足電(dian)狀態。電(dian)池和發電(dian)機負責(ze)對(dui)全車的電(dian)器(qi)進(jin)行(xing)(xing)供電(dian)。
電壓調節器的作用:在發電機轉速變化時,自動控制發電機電壓,使其保持恒定,防止發電機電壓過高而燒壞用電設備和導致蓄電池過量充電,同時也防止發電機電壓過低而導致用電設備工作失常和蓄電池充電不足。
電壓調節器的工作原理:由于發電機與發動機的傳動比固定,所以發電機的轉速將隨發動機轉速的變化而變化。汽車在運行過程中,發動機轉速變化范圍很大,發電機的端電壓也將隨發動機的轉速變化而在很大范圍內變化。發電機對用電設備供電和向蓄電池充電,都要求其電壓穩定,所以為使電壓始終保持在某一數值基本不變,就必須對發電機的輸出電壓進行調節。
發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)調節器的(de)(de)主要作用(yong)(yong)是為了控(kong)制發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)在額定(ding)值(zhi)內,由于(yu)發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)與發(fa)(fa)動機(ji)的(de)(de)傳動比是固定(ding)的(de)(de),所以發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)的(de)(de)轉(zhuan)速(su)將隨發(fa)(fa)動機(ji)轉(zhuan)速(su)的(de)(de)變(bian)化(hua)(hua)而(er)變(bian)化(hua)(hua)。汽車在運行過(guo)程中發(fa)(fa)動機(ji)轉(zhuan)速(su)變(bian)化(hua)(hua)范(fan)圍很大,發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)的(de)(de)端電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)也(ye)將隨發(fa)(fa)動機(ji)的(de)(de)轉(zhuan)速(su)變(bian)化(hua)(hua)而(er)在很大范(fan)圍內變(bian)化(hua)(hua)。發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)對用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)設備供(gong)電(dian)(dian)(dian)(dian)(dian)和向蓄(xu)電(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian),都要求(qiu)其電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)穩定(ding),為了使(shi)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)始終(zhong)保持在某一數(shu)值(zhi)基本不變(bian),就(jiu)必須對發(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機(ji)的(de)(de)輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)進行調節。
風(feng)(feng)雅的外形看起來與天(tian)籟很(hen)相象,特別是從(cong)側面(mian)的角度(du)看過去(qu),像極了一(yi)對孿生兄弟(di),但是風(feng)(feng)雅的車頭(tou)大(da)燈保險杠部位要(yao)比天(tian)籟顯得圓滑,線條(tiao)比較流暢,組以及(ji)霧(wu)燈整合在(zai)一(yi)起﹐配合大(da)型橫柵(zha)式鍍鉻水箱罩(zhao)與nissan廠徽使整個車頭(tou)呈現一(yi)種前衛風(feng)(feng)格。
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