排(pai)氣歧(qi)管,是與發動機氣缸體相連的(de),將各缸的(de)排(pai)氣集中(zhong)起來導(dao)入(ru)排(pai)氣總管,帶有分(fen)歧(qi)的(de)管路。對它的(de)要求主要是,盡量減少排(pai)氣阻力,并避免各缸之間相互(hu)干擾。
排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)作用(yong):排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)是(shi)(shi)(shi)連接每個(ge)氣(qi)(qi)(qi)(qi)缸(gang)(gang)的(de)(de)(de),最(zui)后(hou)排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)會匯集成一(yi)根(gen)管(guan)(guan)(guan)(guan)(guan)子,排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)可以(yi)讓汽(qi)缸(gang)(gang)內排(pai)(pai)(pai)(pai)出的(de)(de)(de)廢氣(qi)(qi)(qi)(qi)進入排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)。汽(qi)車都是(shi)(shi)(shi)有(you)排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de),如(ru)(ru)果發(fa)(fa)動(dong)機有(you)四個(ge)氣(qi)(qi)(qi)(qi)缸(gang)(gang),就有(you)四根(gen)排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan),如(ru)(ru)果發(fa)(fa)動(dong)機有(you)八個(ge)氣(qi)(qi)(qi)(qi)缸(gang)(gang),就有(you)八個(ge)排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)。排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)(guan)(guan)也(ye)被(bei)稱為排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)頭段(duan),發(fa)(fa)動(dong)機的(de)(de)(de)排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)是(shi)(shi)(shi)由三段(duan)組(zu)成的(de)(de)(de),分別是(shi)(shi)(shi)頭段(duan),中(zhong)段(duan),尾(wei)段(duan)。中(zhong)段(duan)是(shi)(shi)(shi)在(zai)底(di)盤上(shang)的(de)(de)(de),中(zhong)段(duan)是(shi)(shi)(shi)一(yi)根(gen)比較長的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)子。尾(wei)段(duan)是(shi)(shi)(shi)靠近后(hou)保險(xian)杠的(de)(de)(de)部分,尾(wei)段(duan)上(shang)一(yi)般有(you)一(yi)個(ge)比較大的(de)(de)(de)消音器。排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)可以(yi)讓發(fa)(fa)動(dong)機做功(gong)產生的(de)(de)(de)廢氣(qi)(qi)(qi)(qi)排(pai)(pai)(pai)(pai)到大氣(qi)(qi)(qi)(qi)中(zhong),并且可以(yi)降(jiang)低排(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)過程中(zhong)產生的(de)(de)(de)噪(zao)音。
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