氣門挺桿。氣門挺桿的作用如下:
1、為了保證氣門關閉嚴密,會在氣門桿端與氣門驅動件之間留有適當的間隙,稱為氣門間隙;
2、若氣門間隙調整不當就會使發動機運行不正常的,過大會影響氣門的開啟量,氣門升程減少引起進氣不足,排氣不徹底,過小會引起氣門關閉不嚴引起漏氣,造成動力下降;
3、所以為了避免氣門間隙調整不當引起的麻煩,一般高速發動機上都會使用可自行調整氣門間隙的液力挺桿。
汽車(che)的(de)(de)(de)(de)(de)(de)(de)發(fa)動(dong)(dong)(dong)(dong)機相當(dang)于(yu)汽車(che)的(de)(de)(de)(de)(de)(de)(de)心(xin)臟(zang)。發(fa)動(dong)(dong)(dong)(dong)機故(gu)障也(ye)是困(kun)擾車(che)友(you)的(de)(de)(de)(de)(de)(de)(de)問題,氣(qi)門(men)(men)(men)(men)(men)(men)挺(ting)(ting)桿(gan)(gan)(gan)是發(fa)動(dong)(dong)(dong)(dong)機的(de)(de)(de)(de)(de)(de)(de)重(zhong)要部(bu)件。接(jie)(jie)下來就讓典(dian)邦給大家介紹一下氣(qi)門(men)(men)(men)(men)(men)(men)挺(ting)(ting)桿(gan)(gan)(gan)的(de)(de)(de)(de)(de)(de)(de)作用(yong)(yong)吧!氣(qi)門(men)(men)(men)(men)(men)(men)挺(ting)(ting)桿(gan)(gan)(gan)的(de)(de)(de)(de)(de)(de)(de)功能(neng),氣(qi)門(men)(men)(men)(men)(men)(men)挺(ting)(ting)桿(gan)(gan)(gan)簡介-功能(neng)也(ye)是用(yong)(yong)于(yu)推動(dong)(dong)(dong)(dong)氣(qi)門(men)(men)(men)(men)(men)(men)打開(kai)(kai)的(de)(de)(de)(de)(de)(de)(de)裝置。因(yin)為(wei)早期發(fa)動(dong)(dong)(dong)(dong)機中使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)這(zhe)種(zhong)裝置形狀像一根細桿(gan)(gan)(gan),所以被稱為(wei)氣(qi)門(men)(men)(men)(men)(men)(men)挺(ting)(ting)桿(gan)(gan)(gan)。它(ta)的(de)(de)(de)(de)(de)(de)(de)主(zhu)要功能(neng)是將凸(tu)(tu)輪(lun)的(de)(de)(de)(de)(de)(de)(de)旋轉運動(dong)(dong)(dong)(dong)轉化為(wei)往復運動(dong)(dong)(dong)(dong)。但(dan)這(zhe)種(zhong)結構(gou)的(de)(de)(de)(de)(de)(de)(de)發(fa)動(dong)(dong)(dong)(dong)機凸(tu)(tu)輪(lun)軸一般不布(bu)置在(zai)發(fa)動(dong)(dong)(dong)(dong)機頂部(bu)。隨著現(xian)代(dai)汽車(che)發(fa)動(dong)(dong)(dong)(dong)機技術的(de)(de)(de)(de)(de)(de)(de)發(fa)展,越來越多的(de)(de)(de)(de)(de)(de)(de)汽車(che)發(fa)動(dong)(dong)(dong)(dong)機采用(yong)(yong)頂置凸(tu)(tu)輪(lun)軸結構(gou),其中傳統(tong)的(de)(de)(de)(de)(de)(de)(de)長氣(qi)門(men)(men)(men)(men)(men)(men)挺(ting)(ting)柱(zhu)(zhu)基本取(qu)消(xiao),取(qu)而代(dai)之的(de)(de)(de)(de)(de)(de)(de)是由凸(tu)(tu)輪(lun)軸驅動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)更(geng)加緊湊的(de)(de)(de)(de)(de)(de)(de)液壓(ya)挺(ting)(ting)柱(zhu)(zhu),或者凸(tu)(tu)輪(lun)軸直接(jie)(jie)驅動(dong)(dong)(dong)(dong)氣(qi)門(men)(men)(men)(men)(men)(men)搖臂來控制氣(qi)門(men)(men)(men)(men)(men)(men)的(de)(de)(de)(de)(de)(de)(de)開(kai)(kai)閉。液壓(ya)杠桿(gan)(gan)(gan)主(zhu)要由柱(zhu)(zhu)塞(sai)、單(dan)向(xiang)閥(fa)和(he)單(dan)向(xiang)閥(fa)彈(dan)簧組成。液壓(ya)桿(gan)(gan)(gan)始終與凸(tu)(tu)輪(lun)軸接(jie)(jie)觸,并且無間(jian)隙(xi)(xi)運行(xing)。在(zai)挺(ting)(ting)桿(gan)(gan)(gan)內部(bu),液壓(ya)用(yong)(yong)于(yu)調整間(jian)隙(xi)(xi)。液壓(ya)挺(ting)(ting)柱(zhu)(zhu)主(zhu)要由柱(zhu)(zhu)塞(sai)、單(dan)向(xiang)閥(fa)和(he)單(dan)向(xiang)閥(fa)彈(dan)簧組成。止回閥(fa)用(yong)(yong)于(yu)儲存或釋(shi)放油。通過改變(bian)挺(ting)(ting)柱(zhu)(zhu)腔(qiang)內的(de)(de)(de)(de)(de)(de)(de)油壓(ya),可以改變(bian)液壓(ya)挺(ting)(ting)柱(zhu)(zhu)的(de)(de)(de)(de)(de)(de)(de)工作長度,從而自動(dong)(dong)(dong)(dong)調整氣(qi)門(men)(men)(men)(men)(men)(men)間(jian)隙(xi)(xi)。
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