排(pai)氣歧管,是(shi)與發動機(ji)氣缸(gang)體相連的,將(jiang)各(ge)(ge)缸(gang)的排(pai)氣集中起來導入排(pai)氣總管,帶有分歧的管路。對它的要求(qiu)主(zhu)要是(shi),盡(jin)量減少排(pai)氣阻力,并避免(mian)各(ge)(ge)缸(gang)之間相互(hu)干擾。
排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)的(de)(de)(de)作用(yong):排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)是(shi)連接(jie)每(mei)個(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)缸的(de)(de)(de),最后排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)會(hui)匯集成(cheng)一根管(guan)(guan)子,排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)可以(yi)讓(rang)汽缸內(nei)排(pai)(pai)出(chu)的(de)(de)(de)廢氣(qi)(qi)(qi)(qi)(qi)(qi)進入(ru)排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)。汽車都是(shi)有(you)(you)排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)的(de)(de)(de),如果發動(dong)機(ji)有(you)(you)四個(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)缸,就有(you)(you)四根排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan),如果發動(dong)機(ji)有(you)(you)八個(ge)氣(qi)(qi)(qi)(qi)(qi)(qi)缸,就有(you)(you)八個(ge)排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)。排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)歧(qi)管(guan)(guan)也被稱為排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)頭(tou)段(duan)(duan),發動(dong)機(ji)的(de)(de)(de)排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)是(shi)由三段(duan)(duan)組成(cheng)的(de)(de)(de),分別(bie)是(shi)頭(tou)段(duan)(duan),中(zhong)(zhong)段(duan)(duan),尾(wei)段(duan)(duan)。中(zhong)(zhong)段(duan)(duan)是(shi)在底盤(pan)上的(de)(de)(de),中(zhong)(zhong)段(duan)(duan)是(shi)一根比(bi)較(jiao)長(chang)的(de)(de)(de)管(guan)(guan)子。尾(wei)段(duan)(duan)是(shi)靠(kao)近后保(bao)險(xian)杠的(de)(de)(de)部分,尾(wei)段(duan)(duan)上一般有(you)(you)一個(ge)比(bi)較(jiao)大(da)的(de)(de)(de)消(xiao)音器。排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)管(guan)(guan)可以(yi)讓(rang)發動(dong)機(ji)做功產生(sheng)的(de)(de)(de)廢氣(qi)(qi)(qi)(qi)(qi)(qi)排(pai)(pai)到(dao)大(da)氣(qi)(qi)(qi)(qi)(qi)(qi)中(zhong)(zhong),并且可以(yi)降低排(pai)(pai)氣(qi)(qi)(qi)(qi)(qi)(qi)過程中(zhong)(zhong)產生(sheng)的(de)(de)(de)噪音。
豐田C-HR于(yu)2016年(nian)正式(shi)在(zai)(zai)土耳其工廠下線,而其美(mei)版車型(xing)(xing)在(zai)(zai)同年(nian)洛杉磯(ji)車展上亮相(xiang)。2018年(nian)9月,C-HR天窗版車型(xing)(xing)正式(shi)上市(shi)。
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