排氣(qi)(qi)歧(qi)管,是與發動(dong)機氣(qi)(qi)缸(gang)體相連(lian)的(de),將各(ge)缸(gang)的(de)排氣(qi)(qi)集(ji)中起來導(dao)入排氣(qi)(qi)總管,帶有分歧(qi)的(de)管路。對它的(de)要求主要是,盡量(liang)減(jian)少排氣(qi)(qi)阻力(li),并(bing)避(bi)免(mian)各(ge)缸(gang)之間相互干擾。
排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)的(de)(de)作用:排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)是(shi)(shi)(shi)連(lian)接每個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)缸的(de)(de),最后(hou)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)會匯集成一根(gen)(gen)管(guan)(guan)(guan)(guan)子,排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)可(ke)以讓(rang)汽(qi)缸內排(pai)(pai)(pai)出(chu)的(de)(de)廢(fei)氣(qi)(qi)(qi)(qi)(qi)進入排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)。汽(qi)車都是(shi)(shi)(shi)有排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)的(de)(de),如果發動(dong)機(ji)有四個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)缸,就有四根(gen)(gen)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan),如果發動(dong)機(ji)有八(ba)個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)缸,就有八(ba)個(ge)(ge)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)也被稱為排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)頭(tou)段(duan)(duan)(duan),發動(dong)機(ji)的(de)(de)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)是(shi)(shi)(shi)由三段(duan)(duan)(duan)組(zu)成的(de)(de),分(fen)別(bie)是(shi)(shi)(shi)頭(tou)段(duan)(duan)(duan),中(zhong)段(duan)(duan)(duan),尾段(duan)(duan)(duan)。中(zhong)段(duan)(duan)(duan)是(shi)(shi)(shi)在底(di)盤(pan)上的(de)(de),中(zhong)段(duan)(duan)(duan)是(shi)(shi)(shi)一根(gen)(gen)比較(jiao)長的(de)(de)管(guan)(guan)(guan)(guan)子。尾段(duan)(duan)(duan)是(shi)(shi)(shi)靠近后(hou)保險杠(gang)的(de)(de)部分(fen),尾段(duan)(duan)(duan)上一般有一個(ge)(ge)比較(jiao)大的(de)(de)消(xiao)音(yin)器。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)可(ke)以讓(rang)發動(dong)機(ji)做(zuo)功產生的(de)(de)廢(fei)氣(qi)(qi)(qi)(qi)(qi)排(pai)(pai)(pai)到大氣(qi)(qi)(qi)(qi)(qi)中(zhong),并且(qie)可(ke)以降低排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)過(guo)程中(zhong)產生的(de)(de)噪音(yin)。
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