排(pai)(pai)氣(qi)歧管,是與發(fa)動機氣(qi)缸(gang)體相連的,將各缸(gang)的排(pai)(pai)氣(qi)集中起來(lai)導入排(pai)(pai)氣(qi)總管,帶有分歧的管路。對它的要求主要是,盡(jin)量減少排(pai)(pai)氣(qi)阻(zu)力(li),并避免(mian)各缸(gang)之間相互干擾。
排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)的(de)作用:排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)是(shi)(shi)連(lian)接每個(ge)(ge)氣(qi)(qi)(qi)(qi)缸的(de),最后(hou)排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)會匯集(ji)成一根管(guan)(guan)(guan)子,排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)可(ke)以讓汽(qi)缸內排(pai)出的(de)廢氣(qi)(qi)(qi)(qi)進入排(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)(guan)。汽(qi)車(che)都(dou)是(shi)(shi)有排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)的(de),如果(guo)發(fa)動(dong)機(ji)有四個(ge)(ge)氣(qi)(qi)(qi)(qi)缸,就有四根排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan),如果(guo)發(fa)動(dong)機(ji)有八個(ge)(ge)氣(qi)(qi)(qi)(qi)缸,就有八個(ge)(ge)排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)。排(pai)氣(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)(guan)也被稱為排(pai)氣(qi)(qi)(qi)(qi)頭(tou)段(duan)(duan),發(fa)動(dong)機(ji)的(de)排(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)(guan)是(shi)(shi)由三段(duan)(duan)組(zu)成的(de),分別是(shi)(shi)頭(tou)段(duan)(duan),中(zhong)(zhong)段(duan)(duan),尾段(duan)(duan)。中(zhong)(zhong)段(duan)(duan)是(shi)(shi)在底盤(pan)上(shang)的(de),中(zhong)(zhong)段(duan)(duan)是(shi)(shi)一根比較長(chang)的(de)管(guan)(guan)(guan)子。尾段(duan)(duan)是(shi)(shi)靠近后(hou)保險杠的(de)部分,尾段(duan)(duan)上(shang)一般(ban)有一個(ge)(ge)比較大的(de)消音器。排(pai)氣(qi)(qi)(qi)(qi)管(guan)(guan)(guan)可(ke)以讓發(fa)動(dong)機(ji)做(zuo)功產(chan)(chan)生的(de)廢氣(qi)(qi)(qi)(qi)排(pai)到大氣(qi)(qi)(qi)(qi)中(zhong)(zhong),并(bing)且(qie)可(ke)以降低排(pai)氣(qi)(qi)(qi)(qi)過程中(zhong)(zhong)產(chan)(chan)生的(de)噪音。
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