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(qi)車(che)的(de)(de)(de)(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)相(xiang)當于(yu)汽(qi)車(che)的(de)(de)(de)(de)(de)(de)心臟。發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)故障也(ye)(ye)是(shi)困擾(rao)車(che)友的(de)(de)(de)(de)(de)(de)問題,氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)是(shi)發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)(de)(de)(de)重要部(bu)件。接下(xia)來就讓典邦給(gei)大家介紹一下(xia)氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)的(de)(de)(de)(de)(de)(de)作(zuo)用(yong)吧!氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)的(de)(de)(de)(de)(de)(de)功(gong)能(neng),氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)簡(jian)介-功(gong)能(neng)也(ye)(ye)是(shi)用(yong)于(yu)推動(dong)(dong)(dong)(dong)(dong)氣(qi)(qi)門(men)(men)(men)打開的(de)(de)(de)(de)(de)(de)裝置(zhi)。因為(wei)(wei)早期發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)中(zhong)使用(yong)的(de)(de)(de)(de)(de)(de)這(zhe)(zhe)種裝置(zhi)形狀像一根細桿(gan),所以被稱為(wei)(wei)氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)。它(ta)的(de)(de)(de)(de)(de)(de)主要功(gong)能(neng)是(shi)將凸(tu)(tu)輪(lun)的(de)(de)(de)(de)(de)(de)旋轉運動(dong)(dong)(dong)(dong)(dong)轉化(hua)為(wei)(wei)往(wang)復運動(dong)(dong)(dong)(dong)(dong)。但(dan)這(zhe)(zhe)種結構的(de)(de)(de)(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)凸(tu)(tu)輪(lun)軸一般不布置(zhi)在(zai)發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)頂(ding)部(bu)。隨著現代汽(qi)車(che)發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)技(ji)術的(de)(de)(de)(de)(de)(de)發(fa)(fa)(fa)展(zhan),越來越多的(de)(de)(de)(de)(de)(de)汽(qi)車(che)發(fa)(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)采用(yong)頂(ding)置(zhi)凸(tu)(tu)輪(lun)軸結構,其中(zhong)傳統的(de)(de)(de)(de)(de)(de)長氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)柱(zhu)基本取消,取而代之的(de)(de)(de)(de)(de)(de)是(shi)由(you)凸(tu)(tu)輪(lun)軸驅動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)更(geng)加(jia)緊湊(cou)的(de)(de)(de)(de)(de)(de)液(ye)壓挺(ting)(ting)柱(zhu),或(huo)者凸(tu)(tu)輪(lun)軸直接驅動(dong)(dong)(dong)(dong)(dong)氣(qi)(qi)門(men)(men)(men)搖臂(bei)來控制氣(qi)(qi)門(men)(men)(men)的(de)(de)(de)(de)(de)(de)開閉。液(ye)壓杠(gang)桿(gan)主要由(you)柱(zhu)塞、單向(xiang)(xiang)閥和單向(xiang)(xiang)閥彈簧組(zu)成。液(ye)壓桿(gan)始終與凸(tu)(tu)輪(lun)軸接觸(chu),并且無間隙(xi)運行(xing)。在(zai)挺(ting)(ting)桿(gan)內部(bu),液(ye)壓用(yong)于(yu)調(diao)(diao)整(zheng)(zheng)間隙(xi)。液(ye)壓挺(ting)(ting)柱(zhu)主要由(you)柱(zhu)塞、單向(xiang)(xiang)閥和單向(xiang)(xiang)閥彈簧組(zu)成。止回閥用(yong)于(yu)儲存或(huo)釋放(fang)油。通過改(gai)變挺(ting)(ting)柱(zhu)腔內的(de)(de)(de)(de)(de)(de)油壓,可以改(gai)變液(ye)壓挺(ting)(ting)柱(zhu)的(de)(de)(de)(de)(de)(de)工作(zuo)長度,從而自動(dong)(dong)(dong)(dong)(dong)調(diao)(diao)整(zheng)(zheng)氣(qi)(qi)門(men)(men)(men)間隙(xi)。
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