排氣歧管,是(shi)與發動機氣缸體相連的(de)(de),將(jiang)各(ge)缸的(de)(de)排氣集(ji)中起來(lai)導入排氣總(zong)管,帶有(you)分歧的(de)(de)管路。對它(ta)的(de)(de)要求主要是(shi),盡(jin)量(liang)減少排氣阻(zu)力,并避免各(ge)缸之間相互干擾(rao)。
排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)的(de)(de)作用:排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)是(shi)(shi)連接每個(ge)氣(qi)(qi)(qi)(qi)缸(gang)的(de)(de),最后(hou)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)會匯集(ji)成一(yi)根管(guan)(guan)子,排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)可以(yi)讓(rang)汽缸(gang)內(nei)排(pai)(pai)(pai)出的(de)(de)廢氣(qi)(qi)(qi)(qi)進(jin)入排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)。汽車都是(shi)(shi)有(you)(you)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)的(de)(de),如(ru)果發(fa)動(dong)(dong)機有(you)(you)四個(ge)氣(qi)(qi)(qi)(qi)缸(gang),就(jiu)有(you)(you)四根排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan),如(ru)果發(fa)動(dong)(dong)機有(you)(you)八個(ge)氣(qi)(qi)(qi)(qi)缸(gang),就(jiu)有(you)(you)八個(ge)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)歧管(guan)(guan)也被(bei)稱為排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)頭(tou)段(duan)(duan),發(fa)動(dong)(dong)機的(de)(de)排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)是(shi)(shi)由(you)三段(duan)(duan)組成的(de)(de),分別是(shi)(shi)頭(tou)段(duan)(duan),中(zhong)段(duan)(duan),尾(wei)段(duan)(duan)。中(zhong)段(duan)(duan)是(shi)(shi)在底盤上(shang)(shang)的(de)(de),中(zhong)段(duan)(duan)是(shi)(shi)一(yi)根比(bi)(bi)較(jiao)長的(de)(de)管(guan)(guan)子。尾(wei)段(duan)(duan)是(shi)(shi)靠近后(hou)保險杠的(de)(de)部分,尾(wei)段(duan)(duan)上(shang)(shang)一(yi)般(ban)有(you)(you)一(yi)個(ge)比(bi)(bi)較(jiao)大(da)的(de)(de)消音(yin)器。排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)可以(yi)讓(rang)發(fa)動(dong)(dong)機做功產(chan)生(sheng)的(de)(de)廢氣(qi)(qi)(qi)(qi)排(pai)(pai)(pai)到大(da)氣(qi)(qi)(qi)(qi)中(zhong),并且可以(yi)降低排(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)過程中(zhong)產(chan)生(sheng)的(de)(de)噪(zao)音(yin)。
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