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(che)的(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)相當于(yu)(yu)汽(qi)(qi)車(che)的(de)(de)(de)心臟。發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)故障也是(shi)困擾車(che)友(you)的(de)(de)(de)問題,氣(qi)(qi)(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)是(shi)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)的(de)(de)(de)重要(yao)部(bu)件。接(jie)下來就讓典邦給大家介紹一下氣(qi)(qi)(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)的(de)(de)(de)作(zuo)用(yong)吧!氣(qi)(qi)(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)的(de)(de)(de)功能,氣(qi)(qi)(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)簡介-功能也是(shi)用(yong)于(yu)(yu)推動(dong)(dong)(dong)氣(qi)(qi)(qi)(qi)門(men)(men)打開的(de)(de)(de)裝置(zhi)。因為早期發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)中使(shi)用(yong)的(de)(de)(de)這種裝置(zhi)形狀像一根細桿(gan)(gan),所以(yi)(yi)被(bei)稱(cheng)為氣(qi)(qi)(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)。它的(de)(de)(de)主(zhu)(zhu)要(yao)功能是(shi)將凸(tu)輪(lun)(lun)(lun)的(de)(de)(de)旋轉運(yun)動(dong)(dong)(dong)轉化為往復運(yun)動(dong)(dong)(dong)。但這種結(jie)構的(de)(de)(de)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)凸(tu)輪(lun)(lun)(lun)軸(zhou)一般不布置(zhi)在發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)頂部(bu)。隨著現(xian)代(dai)汽(qi)(qi)車(che)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)技(ji)術的(de)(de)(de)發(fa)(fa)(fa)展,越來越多的(de)(de)(de)汽(qi)(qi)車(che)發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)(ji)(ji)采用(yong)頂置(zhi)凸(tu)輪(lun)(lun)(lun)軸(zhou)結(jie)構,其中傳統的(de)(de)(de)長(chang)氣(qi)(qi)(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)柱(zhu)(zhu)(zhu)基本取消,取而代(dai)之的(de)(de)(de)是(shi)由凸(tu)輪(lun)(lun)(lun)軸(zhou)驅動(dong)(dong)(dong)的(de)(de)(de)更加緊湊的(de)(de)(de)液(ye)(ye)(ye)壓挺(ting)(ting)(ting)(ting)柱(zhu)(zhu)(zhu),或(huo)者凸(tu)輪(lun)(lun)(lun)軸(zhou)直(zhi)接(jie)驅動(dong)(dong)(dong)氣(qi)(qi)(qi)(qi)門(men)(men)搖臂來控制氣(qi)(qi)(qi)(qi)門(men)(men)的(de)(de)(de)開閉。液(ye)(ye)(ye)壓杠桿(gan)(gan)主(zhu)(zhu)要(yao)由柱(zhu)(zhu)(zhu)塞、單(dan)(dan)向閥和單(dan)(dan)向閥彈簧(huang)組(zu)成。液(ye)(ye)(ye)壓桿(gan)(gan)始終與凸(tu)輪(lun)(lun)(lun)軸(zhou)接(jie)觸,并且(qie)無間隙運(yun)行。在挺(ting)(ting)(ting)(ting)桿(gan)(gan)內部(bu),液(ye)(ye)(ye)壓用(yong)于(yu)(yu)調(diao)整(zheng)間隙。液(ye)(ye)(ye)壓挺(ting)(ting)(ting)(ting)柱(zhu)(zhu)(zhu)主(zhu)(zhu)要(yao)由柱(zhu)(zhu)(zhu)塞、單(dan)(dan)向閥和單(dan)(dan)向閥彈簧(huang)組(zu)成。止(zhi)回閥用(yong)于(yu)(yu)儲存或(huo)釋(shi)放油(you)。通過(guo)改(gai)變(bian)挺(ting)(ting)(ting)(ting)柱(zhu)(zhu)(zhu)腔內的(de)(de)(de)油(you)壓,可以(yi)(yi)改(gai)變(bian)液(ye)(ye)(ye)壓挺(ting)(ting)(ting)(ting)柱(zhu)(zhu)(zhu)的(de)(de)(de)工(gong)作(zuo)長(chang)度,從而自動(dong)(dong)(dong)調(diao)整(zheng)氣(qi)(qi)(qi)(qi)門(men)(men)間隙。
由(you)于中國內地(di)銷售市場所販售車(che)型(xing)有(you)著眾多相同類似(si)地(di)方,有(you)一部分人(ren)士抱持觀點認為該車(che)型(xing)的外觀抄襲了豐田(tian) Rav4、2.0升的版本在(zai)(zai)埃(ai)及另(ling)辟組裝生產(chan)線,包(bao)括奇瑞(rui)汽車(che)東(dong)方之子,A5和格(ge)A1在(zai)(zai)內,由(you)前寶馬BMW埃(ai)及經銷商Aboul-Fotouh正式營運。
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