排氣(qi)(qi)(qi)歧管,是(shi)(shi)與發動(dong)機氣(qi)(qi)(qi)缸體相(xiang)連(lian)的(de)(de),將各缸的(de)(de)排氣(qi)(qi)(qi)集(ji)中起來導入排氣(qi)(qi)(qi)總管,帶有分歧的(de)(de)管路。對它的(de)(de)要求主要是(shi)(shi),盡量減少排氣(qi)(qi)(qi)阻力(li),并避免各缸之間(jian)相(xiang)互干擾。
排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)的(de)(de)作用:排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)是(shi)(shi)連接(jie)每個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)缸的(de)(de),最后排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)會(hui)匯集成(cheng)一根(gen)管(guan)(guan)(guan)子,排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)可以讓(rang)汽缸內排(pai)(pai)(pai)出的(de)(de)廢氣(qi)(qi)(qi)(qi)(qi)(qi)進(jin)入排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)。汽車都是(shi)(shi)有(you)(you)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)的(de)(de),如(ru)果發動(dong)機有(you)(you)四個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)缸,就有(you)(you)四根(gen)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan),如(ru)果發動(dong)機有(you)(you)八個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)缸,就有(you)(you)八個(ge)(ge)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)也被稱為排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)頭(tou)段(duan)(duan)(duan),發動(dong)機的(de)(de)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)是(shi)(shi)由三段(duan)(duan)(duan)組(zu)成(cheng)的(de)(de),分別是(shi)(shi)頭(tou)段(duan)(duan)(duan),中(zhong)段(duan)(duan)(duan),尾(wei)段(duan)(duan)(duan)。中(zhong)段(duan)(duan)(duan)是(shi)(shi)在底盤上的(de)(de),中(zhong)段(duan)(duan)(duan)是(shi)(shi)一根(gen)比較長的(de)(de)管(guan)(guan)(guan)子。尾(wei)段(duan)(duan)(duan)是(shi)(shi)靠近后保(bao)險杠的(de)(de)部分,尾(wei)段(duan)(duan)(duan)上一般有(you)(you)一個(ge)(ge)比較大的(de)(de)消(xiao)音器(qi)。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)可以讓(rang)發動(dong)機做(zuo)功產生(sheng)的(de)(de)廢氣(qi)(qi)(qi)(qi)(qi)(qi)排(pai)(pai)(pai)到大氣(qi)(qi)(qi)(qi)(qi)(qi)中(zhong),并且可以降低排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)過程中(zhong)產生(sheng)的(de)(de)噪音。
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