狼群视频在线

進氣門座圈簡介

進氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)閥座(zuo)(zuo)環功能(neng)氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)的(de)(de)主要(yao)作用(yong)是(shi)(shi)承(cheng)受高速沖(chong)擊(ji)(ji)(ji)，密(mi)封(feng)氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)。發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)用(yong)于延長發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)的(de)(de)使用(yong)壽命，便于維(wei)(wei)護和(he)更(geng)換(huan)。氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)的(de)(de)缺點是(shi)(shi)導熱性(xing)差，選擇合(he)適的(de)(de)與(yu)缸膛過盈量，否(fou)則工(gong)作時(shi)(shi)座(zuo)(zuo)圈(quan)(quan)(quan)會脫落，造成發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)維(wei)(wei)修(xiu)(xiu)事故(gu)！氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)一(yi)般由耐熱合(he)金鋼制成。汽車氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)是(shi)(shi)汽車發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)的(de)(de)重要(yao)附件，主要(yao)用(yong)來密(mi)封(feng)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)，基本上(shang)是(shi)(shi)一(yi)個時(shi)(shi)刻承(cheng)受高速沖(chong)擊(ji)(ji)(ji)的(de)(de)部件。因此，汽車氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)在使用(yong)一(yi)段時(shi)(shi)間后，容易出(chu)現(xian)不(bu)同(tong)程(cheng)度(du)的(de)(de)磨損失效，經(jing)常面臨維(wei)(wei)修(xiu)(xiu)。修(xiu)(xiu)理氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)時(shi)(shi)，應根據(ju)氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)的(de)(de)不(bu)同(tong)磨損情況選擇不(bu)同(tong)的(de)(de)修(xiu)(xiu)理方法，以降低發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)的(de)(de)維(wei)(wei)修(xiu)(xiu)成本。一(yi)般來說(shuo)，氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)座(zuo)(zuo)圈(quan)(quan)(quan)的(de)(de)作用(yong)是(shi)(shi)提高發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)的(de)(de)使用(yong)壽命，承(cheng)受高速沖(chong)擊(ji)(ji)(ji)，方便發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)維(wei)(wei)修(xiu)(xiu)和(he)更(geng)換(huan)，密(mi)封(feng)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)氣(qi)(qi)(qi)(qi)門(men)(men)(men)(men)(men)(men)。

氣門的原理

1、氣門（Valve）的作用是專門負責向發動機內輸入燃料并排出廢氣，傳統發動機每個汽缸只有一個進氣門和一個排氣門，這種設計結構相對簡單，成本較低，維修方便，低速性能較好，缺點是功率很難提高，尤其是高轉速時充氣效率低、性能較弱。
2、為了提高進排氣效率，現在多采用多氣門技術，常見的是每個汽缸布置有4個氣門（也有單缸3或5個氣門的設計，原理一樣，如奧迪A6的發動機），4汽缸一共就是16個氣門，我們在汽車資料上經常看到的“16V”就表示發動機共16個氣門。這種多氣門結構容易形成緊湊型燃燒室，噴油器布置在中央，這樣可以令油氣混合氣燃燒更迅速、更均勻，各氣門的重量和開度適當地減小，使氣門開啟或閉合的速度更快。

一汽-大眾-TACQUA簡介

廣州發布會當(dang)天,大眾(zhong)還將推出一款全新車(che)型(xing),預計就是(shi)一汽-大眾(zhong)TACQUA。該(gai)車(che)為歐版T-Cross的國(guo)產版本,其造(zao)型(xing)設(she)計都與歐版一致(zhi)。