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。
汽車的(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)相當于(yu)汽車的(de)(de)(de)心臟。發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)故障(zhang)也是困(kun)擾(rao)車友的(de)(de)(de)問題,氣(qi)(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)是發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)的(de)(de)(de)重要部(bu)件。接(jie)下(xia)來(lai)就讓典邦給大家(jia)介紹一下(xia)氣(qi)(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)的(de)(de)(de)作(zuo)用(yong)(yong)吧!氣(qi)(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)的(de)(de)(de)功能(neng),氣(qi)(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)簡介-功能(neng)也是用(yong)(yong)于(yu)推(tui)動(dong)(dong)(dong)氣(qi)(qi)(qi)(qi)(qi)門(men)打開的(de)(de)(de)裝(zhuang)(zhuang)置(zhi)。因為早期發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)中使用(yong)(yong)的(de)(de)(de)這種裝(zhuang)(zhuang)置(zhi)形狀像一根細(xi)桿(gan),所以(yi)被稱為氣(qi)(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)。它的(de)(de)(de)主(zhu)(zhu)要功能(neng)是將凸(tu)輪的(de)(de)(de)旋轉運(yun)(yun)動(dong)(dong)(dong)轉化為往(wang)復運(yun)(yun)動(dong)(dong)(dong)。但這種結(jie)構的(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)凸(tu)輪軸(zhou)一般不布置(zhi)在發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)頂部(bu)。隨著(zhu)現代汽車發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)技術的(de)(de)(de)發(fa)(fa)(fa)展,越來(lai)越多的(de)(de)(de)汽車發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)采用(yong)(yong)頂置(zhi)凸(tu)輪軸(zhou)結(jie)構,其中傳(chuan)統的(de)(de)(de)長氣(qi)(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)柱(zhu)(zhu)(zhu)基本取(qu)消,取(qu)而代之的(de)(de)(de)是由(you)凸(tu)輪軸(zhou)驅動(dong)(dong)(dong)的(de)(de)(de)更(geng)加(jia)緊湊(cou)的(de)(de)(de)液(ye)(ye)(ye)壓(ya)(ya)挺(ting)(ting)(ting)柱(zhu)(zhu)(zhu),或者凸(tu)輪軸(zhou)直接(jie)驅動(dong)(dong)(dong)氣(qi)(qi)(qi)(qi)(qi)門(men)搖(yao)臂(bei)來(lai)控制氣(qi)(qi)(qi)(qi)(qi)門(men)的(de)(de)(de)開閉。液(ye)(ye)(ye)壓(ya)(ya)杠(gang)桿(gan)主(zhu)(zhu)要由(you)柱(zhu)(zhu)(zhu)塞(sai)、單(dan)(dan)向(xiang)(xiang)閥和單(dan)(dan)向(xiang)(xiang)閥彈簧組成。液(ye)(ye)(ye)壓(ya)(ya)桿(gan)始終與(yu)凸(tu)輪軸(zhou)接(jie)觸,并且無間隙(xi)運(yun)(yun)行(xing)。在挺(ting)(ting)(ting)桿(gan)內部(bu),液(ye)(ye)(ye)壓(ya)(ya)用(yong)(yong)于(yu)調(diao)整間隙(xi)。液(ye)(ye)(ye)壓(ya)(ya)挺(ting)(ting)(ting)柱(zhu)(zhu)(zhu)主(zhu)(zhu)要由(you)柱(zhu)(zhu)(zhu)塞(sai)、單(dan)(dan)向(xiang)(xiang)閥和單(dan)(dan)向(xiang)(xiang)閥彈簧組成。止回閥用(yong)(yong)于(yu)儲存或釋放油(you)。通過(guo)改變挺(ting)(ting)(ting)柱(zhu)(zhu)(zhu)腔內的(de)(de)(de)油(you)壓(ya)(ya),可以(yi)改變液(ye)(ye)(ye)壓(ya)(ya)挺(ting)(ting)(ting)柱(zhu)(zhu)(zhu)的(de)(de)(de)工作(zuo)長度,從(cong)而自(zi)動(dong)(dong)(dong)調(diao)整氣(qi)(qi)(qi)(qi)(qi)門(men)間隙(xi)。
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