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)(che)的(de)(de)(de)發(fa)動(dong)(dong)(dong)機(ji)(ji)相(xiang)當于(yu)汽(qi)車(che)(che)的(de)(de)(de)心臟。發(fa)動(dong)(dong)(dong)機(ji)(ji)故(gu)障也是(shi)困擾車(che)(che)友的(de)(de)(de)問(wen)題,氣(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)是(shi)發(fa)動(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)重要部(bu)(bu)(bu)件(jian)。接(jie)下來就讓(rang)典邦給大(da)家介紹一下氣(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)的(de)(de)(de)作用(yong)(yong)吧(ba)!氣(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)的(de)(de)(de)功能,氣(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)簡介-功能也是(shi)用(yong)(yong)于(yu)推動(dong)(dong)(dong)氣(qi)(qi)(qi)(qi)門(men)打開的(de)(de)(de)裝(zhuang)置。因為早期發(fa)動(dong)(dong)(dong)機(ji)(ji)中使用(yong)(yong)的(de)(de)(de)這(zhe)種(zhong)裝(zhuang)置形狀(zhuang)像一根細(xi)桿(gan),所以被稱為氣(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)桿(gan)。它的(de)(de)(de)主(zhu)(zhu)要功能是(shi)將凸輪(lun)(lun)的(de)(de)(de)旋轉(zhuan)運動(dong)(dong)(dong)轉(zhuan)化(hua)為往復運動(dong)(dong)(dong)。但這(zhe)種(zhong)結構的(de)(de)(de)發(fa)動(dong)(dong)(dong)機(ji)(ji)凸輪(lun)(lun)軸(zhou)一般不布置在發(fa)動(dong)(dong)(dong)機(ji)(ji)頂部(bu)(bu)(bu)。隨著現代汽(qi)車(che)(che)發(fa)動(dong)(dong)(dong)機(ji)(ji)技術的(de)(de)(de)發(fa)展,越(yue)來越(yue)多的(de)(de)(de)汽(qi)車(che)(che)發(fa)動(dong)(dong)(dong)機(ji)(ji)采用(yong)(yong)頂置凸輪(lun)(lun)軸(zhou)結構,其中傳(chuan)統(tong)的(de)(de)(de)長氣(qi)(qi)(qi)(qi)門(men)挺(ting)(ting)(ting)柱(zhu)(zhu)基本取(qu)消,取(qu)而(er)代之的(de)(de)(de)是(shi)由凸輪(lun)(lun)軸(zhou)驅動(dong)(dong)(dong)的(de)(de)(de)更加緊(jin)湊的(de)(de)(de)液壓(ya)(ya)挺(ting)(ting)(ting)柱(zhu)(zhu),或(huo)者凸輪(lun)(lun)軸(zhou)直接(jie)驅動(dong)(dong)(dong)氣(qi)(qi)(qi)(qi)門(men)搖臂來控(kong)制氣(qi)(qi)(qi)(qi)門(men)的(de)(de)(de)開閉。液壓(ya)(ya)杠桿(gan)主(zhu)(zhu)要由柱(zhu)(zhu)塞、單(dan)向閥和單(dan)向閥彈(dan)簧組成。液壓(ya)(ya)桿(gan)始終與凸輪(lun)(lun)軸(zhou)接(jie)觸,并且(qie)無間(jian)隙(xi)(xi)運行。在挺(ting)(ting)(ting)桿(gan)內(nei)部(bu)(bu)(bu),液壓(ya)(ya)用(yong)(yong)于(yu)調(diao)整(zheng)間(jian)隙(xi)(xi)。液壓(ya)(ya)挺(ting)(ting)(ting)柱(zhu)(zhu)主(zhu)(zhu)要由柱(zhu)(zhu)塞、單(dan)向閥和單(dan)向閥彈(dan)簧組成。止回(hui)閥用(yong)(yong)于(yu)儲存或(huo)釋放(fang)油。通過改變挺(ting)(ting)(ting)柱(zhu)(zhu)腔內(nei)的(de)(de)(de)油壓(ya)(ya),可(ke)以改變液壓(ya)(ya)挺(ting)(ting)(ting)柱(zhu)(zhu)的(de)(de)(de)工作長度,從而(er)自動(dong)(dong)(dong)調(diao)整(zheng)氣(qi)(qi)(qi)(qi)門(men)間(jian)隙(xi)(xi)。
206是標(biao)致公司的核(he)心產品之一,是最(zui)受歐(ou)洲年(nian)輕人歡(huan)迎的時(shi)尚(shang)車型(xing)之一,而且還作為節能省(sheng)油小型(xing)車倍受環保(bao)人士的推崇。206在(zai)歐(ou)洲多個國家獲得(de)該細(xi)分市場的最(zui)佳獎(jiang),共獲得(de)包括德國和日本(ben)在(zai)內的20多個“年(nian)度車型(xing)”獎(jiang)項。
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