排氣歧(qi)管(guan),是(shi)與發動機氣缸體(ti)相連的,將各(ge)缸的排氣集中起來(lai)導(dao)入排氣總管(guan),帶(dai)有分歧(qi)的管(guan)路。對(dui)它的要求(qiu)主要是(shi),盡量減少(shao)排氣阻力,并避免各(ge)缸之(zhi)間(jian)相互干擾。
排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)的(de)作用(yong):排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)是(shi)連接每(mei)個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)缸的(de),最后排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)會匯集成(cheng)一根管(guan)(guan)(guan)(guan)(guan)子,排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)可以(yi)讓汽缸內(nei)排(pai)(pai)(pai)(pai)(pai)出的(de)廢氣(qi)(qi)(qi)(qi)(qi)進入排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)。汽車都是(shi)有(you)排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)的(de),如果發(fa)動(dong)(dong)機有(you)四個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)缸,就(jiu)(jiu)有(you)四根排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan),如果發(fa)動(dong)(dong)機有(you)八(ba)(ba)個(ge)(ge)氣(qi)(qi)(qi)(qi)(qi)缸,就(jiu)(jiu)有(you)八(ba)(ba)個(ge)(ge)排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)。排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)歧(qi)(qi)管(guan)(guan)(guan)(guan)(guan)也(ye)被稱(cheng)為排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)頭(tou)(tou)段(duan)(duan)(duan),發(fa)動(dong)(dong)機的(de)排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)是(shi)由三段(duan)(duan)(duan)組(zu)成(cheng)的(de),分(fen)別(bie)是(shi)頭(tou)(tou)段(duan)(duan)(duan),中(zhong)段(duan)(duan)(duan),尾段(duan)(duan)(duan)。中(zhong)段(duan)(duan)(duan)是(shi)在底(di)盤上(shang)的(de),中(zhong)段(duan)(duan)(duan)是(shi)一根比(bi)較長的(de)管(guan)(guan)(guan)(guan)(guan)子。尾段(duan)(duan)(duan)是(shi)靠近后保險杠的(de)部分(fen),尾段(duan)(duan)(duan)上(shang)一般(ban)有(you)一個(ge)(ge)比(bi)較大的(de)消音器。排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)可以(yi)讓發(fa)動(dong)(dong)機做功(gong)產(chan)生(sheng)的(de)廢氣(qi)(qi)(qi)(qi)(qi)排(pai)(pai)(pai)(pai)(pai)到大氣(qi)(qi)(qi)(qi)(qi)中(zhong),并且可以(yi)降低排(pai)(pai)(pai)(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)過程中(zhong)產(chan)生(sheng)的(de)噪音。
在格(ge)藍(lan)迪換(huan)代的(de)同(tong)時,豐(feng)田(tian)的(de)“子彈頭”則有更迅速的(de)動作(zuo),在設計理念中(zhong)儼然有拋落格(ge)藍(lan)迪之勢。已經(jing)可以(yi)想象出(chu)其在國人審美觀下的(de)印(yin)象了。傳統(tong)MPV的(de)兩廂設計與單廂車型的(de)有機結合,得(de)出(chu)的(de)是格(ge)藍(lan)迪近乎(hu)直(zhi)線(xian)的(de)發動機艙與前風(feng)擋(dang)線(xian)條,
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