排(pai)(pai)氣(qi)(qi)歧管,是與發動機(ji)氣(qi)(qi)缸體相連的(de),將各(ge)缸的(de)排(pai)(pai)氣(qi)(qi)集中起來(lai)導入排(pai)(pai)氣(qi)(qi)總管,帶(dai)有分歧的(de)管路。對(dui)它的(de)要(yao)求(qiu)主要(yao)是,盡量減少排(pai)(pai)氣(qi)(qi)阻力,并避免各(ge)缸之(zhi)間相互干擾。
排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)作(zuo)用:排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)是連接每個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)缸(gang)的(de)(de)(de),最后(hou)排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)會匯(hui)集成一(yi)根管(guan)(guan)(guan)(guan)(guan)子,排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)可(ke)(ke)以讓汽(qi)缸(gang)內(nei)排出的(de)(de)(de)廢(fei)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)進入排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)。汽(qi)車都是有(you)排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de),如(ru)果(guo)發(fa)(fa)動機有(you)四個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)缸(gang),就有(you)四根排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan),如(ru)果(guo)發(fa)(fa)動機有(you)八個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)缸(gang),就有(you)八個(ge)(ge)排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)。排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)也被(bei)稱為排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)頭(tou)段(duan)(duan),發(fa)(fa)動機的(de)(de)(de)排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)是由三段(duan)(duan)組(zu)成的(de)(de)(de),分(fen)別是頭(tou)段(duan)(duan),中(zhong)(zhong)段(duan)(duan),尾段(duan)(duan)。中(zhong)(zhong)段(duan)(duan)是在底盤上的(de)(de)(de),中(zhong)(zhong)段(duan)(duan)是一(yi)根比(bi)較(jiao)長(chang)的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)子。尾段(duan)(duan)是靠近后(hou)保險杠(gang)的(de)(de)(de)部分(fen),尾段(duan)(duan)上一(yi)般有(you)一(yi)個(ge)(ge)比(bi)較(jiao)大(da)的(de)(de)(de)消(xiao)音器。排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)可(ke)(ke)以讓發(fa)(fa)動機做功產(chan)生的(de)(de)(de)廢(fei)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)排到(dao)大(da)氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)中(zhong)(zhong),并且可(ke)(ke)以降低(di)排氣(qi)(qi)(qi)(qi)(qi)(qi)(qi)過程中(zhong)(zhong)產(chan)生的(de)(de)(de)噪音。
豐田皇(huang)冠(guan)引于(yu)到現在已(yi)經是車型,皇(huang)冠(guan)基本(ben)上保持著(zhu)4—5年換進代(dai)的步伐。 國產皇(huang)冠(guan)為(wei)三種(zhong)排量(liang),并配置進出氣門雙(shuang)向智(zhi)能(neng)正時可變系統,使發(fa)動機的進氣效率、燃油經濟(ji)性(xing)、動力性(xing)能(neng)都(dou)有很大提高,馬力更加強勁。底盤方(fang)面,采用(yong)了四輪全獨(du)立懸架,舒適性(xing)很好
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