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)(che)的(de)(de)發(fa)(fa)動(dong)(dong)(dong)機相當于(yu)汽(qi)(qi)車(che)(che)的(de)(de)心臟(zang)。發(fa)(fa)動(dong)(dong)(dong)機故障也是(shi)(shi)困擾車(che)(che)友(you)的(de)(de)問(wen)題,氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)是(shi)(shi)發(fa)(fa)動(dong)(dong)(dong)機的(de)(de)重要部(bu)件。接下來(lai)就讓(rang)典邦給(gei)大(da)家介(jie)(jie)紹一(yi)下氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)的(de)(de)作(zuo)用(yong)吧!氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)的(de)(de)功(gong)能(neng),氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)簡(jian)介(jie)(jie)-功(gong)能(neng)也是(shi)(shi)用(yong)于(yu)推動(dong)(dong)(dong)氣(qi)(qi)門(men)(men)打(da)開的(de)(de)裝置。因為(wei)早期發(fa)(fa)動(dong)(dong)(dong)機中使用(yong)的(de)(de)這種(zhong)裝置形狀像(xiang)一(yi)根細桿(gan)(gan)(gan),所(suo)以(yi)被稱為(wei)氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)。它的(de)(de)主要功(gong)能(neng)是(shi)(shi)將凸輪(lun)(lun)的(de)(de)旋(xuan)轉運(yun)動(dong)(dong)(dong)轉化為(wei)往(wang)復運(yun)動(dong)(dong)(dong)。但這種(zhong)結構的(de)(de)發(fa)(fa)動(dong)(dong)(dong)機凸輪(lun)(lun)軸一(yi)般不布置在發(fa)(fa)動(dong)(dong)(dong)機頂部(bu)。隨(sui)著現代汽(qi)(qi)車(che)(che)發(fa)(fa)動(dong)(dong)(dong)機技(ji)術的(de)(de)發(fa)(fa)展,越來(lai)越多的(de)(de)汽(qi)(qi)車(che)(che)發(fa)(fa)動(dong)(dong)(dong)機采用(yong)頂置凸輪(lun)(lun)軸結構,其(qi)中傳統(tong)的(de)(de)長(chang)氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)(ting)(ting)柱基本取消,取而代之的(de)(de)是(shi)(shi)由凸輪(lun)(lun)軸驅(qu)動(dong)(dong)(dong)的(de)(de)更加緊湊的(de)(de)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)挺(ting)(ting)(ting)(ting)(ting)(ting)柱,或(huo)者凸輪(lun)(lun)軸直(zhi)接驅(qu)動(dong)(dong)(dong)氣(qi)(qi)門(men)(men)搖臂來(lai)控制氣(qi)(qi)門(men)(men)的(de)(de)開閉。液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)杠(gang)桿(gan)(gan)(gan)主要由柱塞(sai)、單(dan)向(xiang)(xiang)閥(fa)(fa)和(he)單(dan)向(xiang)(xiang)閥(fa)(fa)彈簧(huang)組成(cheng)。液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)桿(gan)(gan)(gan)始(shi)終與凸輪(lun)(lun)軸接觸(chu),并(bing)且(qie)無(wu)間(jian)隙(xi)運(yun)行。在挺(ting)(ting)(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)內部(bu),液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)用(yong)于(yu)調整間(jian)隙(xi)。液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)挺(ting)(ting)(ting)(ting)(ting)(ting)柱主要由柱塞(sai)、單(dan)向(xiang)(xiang)閥(fa)(fa)和(he)單(dan)向(xiang)(xiang)閥(fa)(fa)彈簧(huang)組成(cheng)。止回(hui)閥(fa)(fa)用(yong)于(yu)儲(chu)存或(huo)釋(shi)放(fang)油。通過改(gai)變(bian)挺(ting)(ting)(ting)(ting)(ting)(ting)柱腔內的(de)(de)油壓(ya)(ya)(ya),可(ke)以(yi)改(gai)變(bian)液(ye)(ye)(ye)(ye)壓(ya)(ya)(ya)挺(ting)(ting)(ting)(ting)(ting)(ting)柱的(de)(de)工作(zuo)長(chang)度,從而自動(dong)(dong)(dong)調整氣(qi)(qi)門(men)(men)間(jian)隙(xi)。
比(bi)亞迪(di)(di)全新數智大兩(liang)廂G3R宣布(bu)于山(shan)東首(shou)站上(shang)市(shi),同(tong)時也揭開了(le)G3R巡回上(shang)市(shi)的(de)(de)(de)(de)(de)序幕。比(bi)亞迪(di)(di)G3R目(mu)標用(yong)戶瞄準年(nian)輕群(qun)體和家庭用(yong)戶,共推出(chu)1.5LMT尚雅(ya)型和1.8LCVT兩(liang)款車(che)型,有(you)(you)5種(zhong)顏(yan)色可(ke)供選擇(ze),比(bi)亞迪(di)(di)G3R是(shi)(shi)比(bi)亞迪(di)(di)G3的(de)(de)(de)(de)(de)兩(liang)廂版,延(yan)續(xu)G3“典雅(ya)、智能”的(de)(de)(de)(de)(de)特點,同(tong)時又擁有(you)(you)兩(liang)廂車(che)的(de)(de)(de)(de)(de)運(yun)動風格,上(shang)市(shi)之后(hou)(hou)將(jiang)搭(da)檔比(bi)亞迪(di)(di)G3,形(xing)成繼之后(hou)(hou)的(de)(de)(de)(de)(de)又一(yi)雙(shuang)車(che)戰略。 其出(chu)色的(de)(de)(de)(de)(de)動力系統擁有(you)(you)較(jiao)強的(de)(de)(de)(de)(de)優(you)勢(shi),而運(yun)動時尚的(de)(de)(de)(de)(de)外觀、豐富的(de)(de)(de)(de)(de)高科(ke)技配置也是(shi)(shi)G3R出(chu)奇制勝的(de)(de)(de)(de)(de)法寶。
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