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)(de)(de)(de)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)相當于(yu)(yu)汽車的(de)(de)(de)(de)(de)(de)心(xin)臟。發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)故(gu)障(zhang)也是困擾(rao)車友的(de)(de)(de)(de)(de)(de)問題,氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)(gan)是發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)的(de)(de)(de)(de)(de)(de)重要(yao)部件(jian)。接下(xia)來就讓典(dian)邦給大家介紹(shao)一(yi)下(xia)氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)(gan)的(de)(de)(de)(de)(de)(de)作用(yong)(yong)吧!氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)(gan)的(de)(de)(de)(de)(de)(de)功(gong)能(neng),氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)(gan)簡介-功(gong)能(neng)也是用(yong)(yong)于(yu)(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(yin)為早期發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)中使用(yong)(yong)的(de)(de)(de)(de)(de)(de)這(zhe)種裝置(zhi)形狀像一(yi)根細桿(gan)(gan),所以被(bei)稱(cheng)為氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)桿(gan)(gan)。它(ta)的(de)(de)(de)(de)(de)(de)主(zhu)要(yao)功(gong)能(neng)是將凸(tu)(tu)(tu)輪(lun)(lun)(lun)的(de)(de)(de)(de)(de)(de)旋轉運動(dong)(dong)(dong)(dong)(dong)轉化為往復運動(dong)(dong)(dong)(dong)(dong)。但這(zhe)種結構的(de)(de)(de)(de)(de)(de)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)凸(tu)(tu)(tu)輪(lun)(lun)(lun)軸一(yi)般(ban)不布置(zhi)在發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)頂(ding)部。隨著(zhu)現代汽車發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)技(ji)術的(de)(de)(de)(de)(de)(de)發(fa)(fa)展,越(yue)來越(yue)多的(de)(de)(de)(de)(de)(de)汽車發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)采用(yong)(yong)頂(ding)置(zhi)凸(tu)(tu)(tu)輪(lun)(lun)(lun)軸結構,其中傳統的(de)(de)(de)(de)(de)(de)長氣(qi)(qi)門(men)(men)(men)挺(ting)(ting)柱基本取(qu)消,取(qu)而(er)代之的(de)(de)(de)(de)(de)(de)是由凸(tu)(tu)(tu)輪(lun)(lun)(lun)軸驅(qu)動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)更加緊湊的(de)(de)(de)(de)(de)(de)液(ye)壓(ya)(ya)挺(ting)(ting)柱,或者凸(tu)(tu)(tu)輪(lun)(lun)(lun)軸直接驅(qu)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(ya)(ya)杠桿(gan)(gan)主(zhu)要(yao)由柱塞(sai)、單(dan)(dan)向閥和(he)單(dan)(dan)向閥彈(dan)簧(huang)組(zu)成(cheng)。液(ye)壓(ya)(ya)桿(gan)(gan)始終與(yu)凸(tu)(tu)(tu)輪(lun)(lun)(lun)軸接觸(chu),并且無(wu)間隙運行。在挺(ting)(ting)桿(gan)(gan)內(nei)部,液(ye)壓(ya)(ya)用(yong)(yong)于(yu)(yu)調整(zheng)間隙。液(ye)壓(ya)(ya)挺(ting)(ting)柱主(zhu)要(yao)由柱塞(sai)、單(dan)(dan)向閥和(he)單(dan)(dan)向閥彈(dan)簧(huang)組(zu)成(cheng)。止(zhi)回(hui)閥用(yong)(yong)于(yu)(yu)儲(chu)存或釋放(fang)油。通過改變挺(ting)(ting)柱腔內(nei)的(de)(de)(de)(de)(de)(de)油壓(ya)(ya),可(ke)以改變液(ye)壓(ya)(ya)挺(ting)(ting)柱的(de)(de)(de)(de)(de)(de)工作長度,從而(er)自動(dong)(dong)(dong)(dong)(dong)調整(zheng)氣(qi)(qi)門(men)(men)(men)間隙。
奔(ben)馳C260L,一(yi)打開(kai)車門(men),本來還在4系(xi)與(yu)C級(ji)糾結(jie)的(de)我(wo),瞬間(jian)有了答案。這一(yi)代奔(ben)馳C級(ji)奔(ben)馳C260L的(de)內(nei)飾(shi)和氛圍燈實在讓人(ren)愛不釋手,但是(shi)我(wo)最(zui)擔心的(de)還是(shi)1.5T,同樣是(shi)184匹,2.0T絕對是(shi)比1.5T從容,所以(yi)1.5T的(de)發(fa)動(dong)機一(yi)直是(shi)我(wo)心里的(de)坎。抱著這樣的(de)疑問去(qu)試(shi)駕(jia),可能也是(shi)頭一(yi)次購車缺少(shao)經驗,試(shi)駕(jia)就直接大腳(jiao)油(you)門(men),所以(yi)感受不太出1.5T和2.0T的(de)區別。
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