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(che)(che)的(de)(de)(de)發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)相(xiang)當于(yu)汽車(che)(che)的(de)(de)(de)心臟。發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)故障也是(shi)(shi)(shi)困(kun)擾車(che)(che)友的(de)(de)(de)問題,氣(qi)(qi)(qi)門(men)(men)(men)(men)挺(ting)(ting)桿(gan)是(shi)(shi)(shi)發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)的(de)(de)(de)重要部件。接下(xia)來(lai)(lai)就讓典(dian)邦給大家介(jie)紹(shao)一下(xia)氣(qi)(qi)(qi)門(men)(men)(men)(men)挺(ting)(ting)桿(gan)的(de)(de)(de)作用(yong)吧!氣(qi)(qi)(qi)門(men)(men)(men)(men)挺(ting)(ting)桿(gan)的(de)(de)(de)功(gong)(gong)能,氣(qi)(qi)(qi)門(men)(men)(men)(men)挺(ting)(ting)桿(gan)簡介(jie)-功(gong)(gong)能也是(shi)(shi)(shi)用(yong)于(yu)推動(dong)(dong)(dong)氣(qi)(qi)(qi)門(men)(men)(men)(men)打開(kai)(kai)的(de)(de)(de)裝置(zhi)。因為(wei)(wei)早期發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)中使(shi)用(yong)的(de)(de)(de)這(zhe)種(zhong)裝置(zhi)形狀像一根(gen)細桿(gan),所以(yi)被(bei)稱為(wei)(wei)氣(qi)(qi)(qi)門(men)(men)(men)(men)挺(ting)(ting)桿(gan)。它(ta)的(de)(de)(de)主(zhu)要功(gong)(gong)能是(shi)(shi)(shi)將凸(tu)輪(lun)的(de)(de)(de)旋(xuan)轉運(yun)動(dong)(dong)(dong)轉化(hua)為(wei)(wei)往復運(yun)動(dong)(dong)(dong)。但這(zhe)種(zhong)結構(gou)的(de)(de)(de)發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)凸(tu)輪(lun)軸(zhou)一般不布置(zhi)在發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)頂部。隨著現(xian)代汽車(che)(che)發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)技術(shu)的(de)(de)(de)發(fa)(fa)(fa)(fa)(fa)展,越來(lai)(lai)越多的(de)(de)(de)汽車(che)(che)發(fa)(fa)(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)采(cai)用(yong)頂置(zhi)凸(tu)輪(lun)軸(zhou)結構(gou),其中傳統(tong)的(de)(de)(de)長(chang)氣(qi)(qi)(qi)門(men)(men)(men)(men)挺(ting)(ting)柱基(ji)本取消(xiao),取而(er)代之的(de)(de)(de)是(shi)(shi)(shi)由凸(tu)輪(lun)軸(zhou)驅動(dong)(dong)(dong)的(de)(de)(de)更加緊湊(cou)的(de)(de)(de)液(ye)(ye)(ye)壓(ya)挺(ting)(ting)柱,或(huo)者凸(tu)輪(lun)軸(zhou)直接驅動(dong)(dong)(dong)氣(qi)(qi)(qi)門(men)(men)(men)(men)搖臂來(lai)(lai)控制(zhi)氣(qi)(qi)(qi)門(men)(men)(men)(men)的(de)(de)(de)開(kai)(kai)閉。液(ye)(ye)(ye)壓(ya)杠桿(gan)主(zhu)要由柱塞(sai)、單向閥和(he)單向閥彈(dan)簧(huang)組(zu)成。液(ye)(ye)(ye)壓(ya)桿(gan)始(shi)終與凸(tu)輪(lun)軸(zhou)接觸(chu),并(bing)且(qie)無間隙(xi)運(yun)行(xing)。在挺(ting)(ting)桿(gan)內部,液(ye)(ye)(ye)壓(ya)用(yong)于(yu)調整間隙(xi)。液(ye)(ye)(ye)壓(ya)挺(ting)(ting)柱主(zhu)要由柱塞(sai)、單向閥和(he)單向閥彈(dan)簧(huang)組(zu)成。止回閥用(yong)于(yu)儲(chu)存(cun)或(huo)釋放(fang)油(you)。通過改變挺(ting)(ting)柱腔內的(de)(de)(de)油(you)壓(ya),可以(yi)改變液(ye)(ye)(ye)壓(ya)挺(ting)(ting)柱的(de)(de)(de)工(gong)作長(chang)度(du),從(cong)而(er)自動(dong)(dong)(dong)調整氣(qi)(qi)(qi)門(men)(men)(men)(men)間隙(xi)。
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