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)(qi)車的(de)(de)(de)(de)(de)發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)相當于汽(qi)(qi)車的(de)(de)(de)(de)(de)心臟(zang)。發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)故障也是(shi)困擾車友的(de)(de)(de)(de)(de)問題,氣(qi)門(men)(men)挺(ting)(ting)(ting)桿是(shi)發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)的(de)(de)(de)(de)(de)重要(yao)(yao)部件。接(jie)下(xia)(xia)來就讓典邦給(gei)大(da)家介(jie)紹一(yi)下(xia)(xia)氣(qi)門(men)(men)挺(ting)(ting)(ting)桿的(de)(de)(de)(de)(de)作(zuo)用吧!氣(qi)門(men)(men)挺(ting)(ting)(ting)桿的(de)(de)(de)(de)(de)功(gong)能(neng),氣(qi)門(men)(men)挺(ting)(ting)(ting)桿簡介(jie)-功(gong)能(neng)也是(shi)用于推動(dong)(dong)(dong)(dong)(dong)(dong)(dong)氣(qi)門(men)(men)打開的(de)(de)(de)(de)(de)裝(zhuang)置(zhi)。因為早期發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)中(zhong)使用的(de)(de)(de)(de)(de)這(zhe)種裝(zhuang)置(zhi)形狀像(xiang)一(yi)根(gen)細(xi)桿,所以(yi)被稱為氣(qi)門(men)(men)挺(ting)(ting)(ting)桿。它(ta)的(de)(de)(de)(de)(de)主要(yao)(yao)功(gong)能(neng)是(shi)將凸(tu)(tu)輪(lun)(lun)(lun)的(de)(de)(de)(de)(de)旋轉運動(dong)(dong)(dong)(dong)(dong)(dong)(dong)轉化為往復運動(dong)(dong)(dong)(dong)(dong)(dong)(dong)。但這(zhe)種結構的(de)(de)(de)(de)(de)發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)(zhou)一(yi)般不(bu)布置(zhi)在發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)頂部。隨(sui)著現代汽(qi)(qi)車發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)技術的(de)(de)(de)(de)(de)發展,越來越多的(de)(de)(de)(de)(de)汽(qi)(qi)車發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)采用頂置(zhi)凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)(zhou)結構,其中(zhong)傳統(tong)的(de)(de)(de)(de)(de)長氣(qi)門(men)(men)挺(ting)(ting)(ting)柱(zhu)基本取消,取而(er)代之的(de)(de)(de)(de)(de)是(shi)由凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)(zhou)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)更加(jia)緊湊的(de)(de)(de)(de)(de)液壓(ya)挺(ting)(ting)(ting)柱(zhu),或者凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)(zhou)直接(jie)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)氣(qi)門(men)(men)搖臂來控制氣(qi)門(men)(men)的(de)(de)(de)(de)(de)開閉。液壓(ya)杠桿主要(yao)(yao)由柱(zhu)塞、單(dan)向閥(fa)和單(dan)向閥(fa)彈簧組(zu)成(cheng)。液壓(ya)桿始終與凸(tu)(tu)輪(lun)(lun)(lun)軸(zhou)(zhou)(zhou)接(jie)觸,并(bing)且無間(jian)隙(xi)運行。在挺(ting)(ting)(ting)桿內部,液壓(ya)用于調整間(jian)隙(xi)。液壓(ya)挺(ting)(ting)(ting)柱(zhu)主要(yao)(yao)由柱(zhu)塞、單(dan)向閥(fa)和單(dan)向閥(fa)彈簧組(zu)成(cheng)。止回(hui)閥(fa)用于儲存(cun)或釋(shi)放(fang)油(you)。通過改變(bian)挺(ting)(ting)(ting)柱(zhu)腔內的(de)(de)(de)(de)(de)油(you)壓(ya),可以(yi)改變(bian)液壓(ya)挺(ting)(ting)(ting)柱(zhu)的(de)(de)(de)(de)(de)工(gong)作(zuo)長度(du),從而(er)自動(dong)(dong)(dong)(dong)(dong)(dong)(dong)調整氣(qi)門(men)(men)間(jian)隙(xi)。
做到了(le)(le)整車(che)系統的(de)完美匹配(pei),不(bu)僅提高了(le)(le)產品的(de)耐用(yong)性(xing)與穩(wen)定性(xing),也(ye)極(ji)大降(jiang)低了(le)(le)各系統之(zhi)間(jian)因不(bu)匹配(pei)導致的(de)能量損失(shi),提高了(le)(le)客戶(hu)的(de)經濟效率不(bu)僅降(jiang)低了(le)(le)使用(yong)成本和維(wei)護(hu)成本,也(ye)提高了(le)(le)檔次與地(di)位。
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