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)機(ji)(ji)相當于汽車的(de)(de)(de)心(xin)臟(zang)。發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)故障也是困擾車友的(de)(de)(de)問題,氣(qi)(qi)門(men)(men)(men)挺(ting)桿(gan)是發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)的(de)(de)(de)重(zhong)要(yao)(yao)(yao)部(bu)件。接(jie)(jie)下來就讓典邦(bang)給大家介(jie)紹(shao)一下氣(qi)(qi)門(men)(men)(men)挺(ting)桿(gan)的(de)(de)(de)作(zuo)用(yong)吧!氣(qi)(qi)門(men)(men)(men)挺(ting)桿(gan)的(de)(de)(de)功(gong)能,氣(qi)(qi)門(men)(men)(men)挺(ting)桿(gan)簡介(jie)-功(gong)能也是用(yong)于推動(dong)(dong)氣(qi)(qi)門(men)(men)(men)打開(kai)的(de)(de)(de)裝置(zhi)。因為早(zao)期發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)中使用(yong)的(de)(de)(de)這種(zhong)裝置(zhi)形狀像一根細桿(gan),所(suo)以被稱為氣(qi)(qi)門(men)(men)(men)挺(ting)桿(gan)。它的(de)(de)(de)主要(yao)(yao)(yao)功(gong)能是將(jiang)凸(tu)輪(lun)(lun)(lun)的(de)(de)(de)旋轉(zhuan)運(yun)動(dong)(dong)轉(zhuan)化為往復運(yun)動(dong)(dong)。但這種(zhong)結構的(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)凸(tu)輪(lun)(lun)(lun)軸(zhou)一般(ban)不布置(zhi)在發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)頂(ding)部(bu)。隨(sui)著現(xian)代汽車發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)技(ji)術的(de)(de)(de)發(fa)(fa)(fa)展,越(yue)來越(yue)多的(de)(de)(de)汽車發(fa)(fa)(fa)動(dong)(dong)機(ji)(ji)采用(yong)頂(ding)置(zhi)凸(tu)輪(lun)(lun)(lun)軸(zhou)結構,其中傳統的(de)(de)(de)長(chang)氣(qi)(qi)門(men)(men)(men)挺(ting)柱(zhu)(zhu)(zhu)基本(ben)取(qu)消,取(qu)而代之的(de)(de)(de)是由(you)(you)凸(tu)輪(lun)(lun)(lun)軸(zhou)驅動(dong)(dong)的(de)(de)(de)更加緊湊的(de)(de)(de)液(ye)壓(ya)(ya)挺(ting)柱(zhu)(zhu)(zhu),或者(zhe)凸(tu)輪(lun)(lun)(lun)軸(zhou)直接(jie)(jie)驅動(dong)(dong)氣(qi)(qi)門(men)(men)(men)搖臂來控制氣(qi)(qi)門(men)(men)(men)的(de)(de)(de)開(kai)閉。液(ye)壓(ya)(ya)杠(gang)桿(gan)主要(yao)(yao)(yao)由(you)(you)柱(zhu)(zhu)(zhu)塞、單向(xiang)閥和單向(xiang)閥彈(dan)簧(huang)組成(cheng)。液(ye)壓(ya)(ya)桿(gan)始終與凸(tu)輪(lun)(lun)(lun)軸(zhou)接(jie)(jie)觸,并且無間隙運(yun)行。在挺(ting)桿(gan)內(nei)(nei)部(bu),液(ye)壓(ya)(ya)用(yong)于調(diao)整(zheng)間隙。液(ye)壓(ya)(ya)挺(ting)柱(zhu)(zhu)(zhu)主要(yao)(yao)(yao)由(you)(you)柱(zhu)(zhu)(zhu)塞、單向(xiang)閥和單向(xiang)閥彈(dan)簧(huang)組成(cheng)。止(zhi)回(hui)閥用(yong)于儲存(cun)或釋放(fang)油(you)。通過改變挺(ting)柱(zhu)(zhu)(zhu)腔內(nei)(nei)的(de)(de)(de)油(you)壓(ya)(ya),可以改變液(ye)壓(ya)(ya)挺(ting)柱(zhu)(zhu)(zhu)的(de)(de)(de)工(gong)作(zuo)長(chang)度,從而自動(dong)(dong)調(diao)整(zheng)氣(qi)(qi)門(men)(men)(men)間隙。
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