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)發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)相當于汽(qi)車(che)的(de)(de)(de)心(xin)臟。發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)故障也(ye)是困擾車(che)友(you)的(de)(de)(de)問(wen)題,氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)挺(ting)桿(gan)(gan)(gan)是發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)的(de)(de)(de)重要(yao)部(bu)(bu)件。接(jie)下來就讓(rang)典(dian)邦給大家介(jie)紹一(yi)下氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)挺(ting)桿(gan)(gan)(gan)的(de)(de)(de)作(zuo)用(yong)(yong)(yong)(yong)吧!氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)挺(ting)桿(gan)(gan)(gan)的(de)(de)(de)功(gong)能,氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)挺(ting)桿(gan)(gan)(gan)簡(jian)介(jie)-功(gong)能也(ye)是用(yong)(yong)(yong)(yong)于推動(dong)(dong)(dong)(dong)氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)打開(kai)的(de)(de)(de)裝置(zhi)。因(yin)為早期(qi)發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)中(zhong)使(shi)用(yong)(yong)(yong)(yong)的(de)(de)(de)這種(zhong)裝置(zhi)形(xing)狀像一(yi)根細桿(gan)(gan)(gan),所以被稱為氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)挺(ting)桿(gan)(gan)(gan)。它的(de)(de)(de)主(zhu)要(yao)功(gong)能是將凸(tu)(tu)輪(lun)(lun)(lun)的(de)(de)(de)旋轉運(yun)動(dong)(dong)(dong)(dong)轉化為往(wang)復運(yun)動(dong)(dong)(dong)(dong)。但(dan)這種(zhong)結(jie)構(gou)的(de)(de)(de)發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)一(yi)般不布置(zhi)在發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)頂(ding)部(bu)(bu)。隨著現(xian)代(dai)(dai)汽(qi)車(che)發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)技術的(de)(de)(de)發(fa)(fa)展,越來越多的(de)(de)(de)汽(qi)車(che)發(fa)(fa)動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)采用(yong)(yong)(yong)(yong)頂(ding)置(zhi)凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)結(jie)構(gou),其中(zhong)傳統(tong)的(de)(de)(de)長氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)挺(ting)柱(zhu)(zhu)基本取消,取而(er)代(dai)(dai)之的(de)(de)(de)是由(you)(you)凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)驅動(dong)(dong)(dong)(dong)的(de)(de)(de)更加(jia)緊湊的(de)(de)(de)液(ye)(ye)壓(ya)(ya)挺(ting)柱(zhu)(zhu),或(huo)者凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)直接(jie)驅動(dong)(dong)(dong)(dong)氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)搖臂(bei)來控制氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)的(de)(de)(de)開(kai)閉。液(ye)(ye)壓(ya)(ya)杠桿(gan)(gan)(gan)主(zhu)要(yao)由(you)(you)柱(zhu)(zhu)塞(sai)、單向(xiang)閥(fa)和單向(xiang)閥(fa)彈(dan)簧組(zu)成。液(ye)(ye)壓(ya)(ya)桿(gan)(gan)(gan)始終與凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)接(jie)觸,并(bing)且無間隙(xi)運(yun)行。在挺(ting)桿(gan)(gan)(gan)內部(bu)(bu),液(ye)(ye)壓(ya)(ya)用(yong)(yong)(yong)(yong)于調整間隙(xi)。液(ye)(ye)壓(ya)(ya)挺(ting)柱(zhu)(zhu)主(zhu)要(yao)由(you)(you)柱(zhu)(zhu)塞(sai)、單向(xiang)閥(fa)和單向(xiang)閥(fa)彈(dan)簧組(zu)成。止(zhi)回閥(fa)用(yong)(yong)(yong)(yong)于儲存或(huo)釋放油(you)。通過改變(bian)挺(ting)柱(zhu)(zhu)腔內的(de)(de)(de)油(you)壓(ya)(ya),可以改變(bian)液(ye)(ye)壓(ya)(ya)挺(ting)柱(zhu)(zhu)的(de)(de)(de)工作(zuo)長度,從(cong)而(er)自動(dong)(dong)(dong)(dong)調整氣(qi)(qi)(qi)門(men)(men)(men)(men)(men)間隙(xi)。
長城哈弗H3是針對客戶不(bu)同(tong)需要(yao)全新開發的(de)(de)一(yi)款細(xi)分車型,繼承了(le)(le)(le)哈弗系列產品一(yi)貫的(de)(de)優良品質。哈弗H3很好(hao)的(de)(de)繼承了(le)(le)(le)SUV車型空(kong)間大、越野能力強(qiang)的(de)(de)特點,同(tong)時將(jiang)舒(shu)適性更(geng)進一(yi)步,不(bu)亞于高檔轎車,是個真正(zheng)的(de)(de)多面(mian)手。另外,改動(dong)后的(de)(de)霧燈(deng),活潑靈動(dong),給高大冷酷的(de)(de)SUV增添了(le)(le)(le)一(yi)些親民和藹的(de)(de)熱情。
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