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)發(fa)動(dong)(dong)(dong)機(ji)相當于汽(qi)(qi)車的(de)(de)(de)心臟。發(fa)動(dong)(dong)(dong)機(ji)故障也(ye)是困(kun)擾(rao)車友的(de)(de)(de)問題,氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)(gan)(gan)是發(fa)動(dong)(dong)(dong)機(ji)的(de)(de)(de)重要(yao)部(bu)(bu)件。接(jie)(jie)(jie)下來(lai)就讓典邦給(gei)大家(jia)介紹一(yi)下氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)(gan)(gan)的(de)(de)(de)作(zuo)用(yong)吧(ba)!氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)(gan)(gan)的(de)(de)(de)功能,氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)(gan)(gan)簡介-功能也(ye)是用(yong)于推動(dong)(dong)(dong)氣(qi)(qi)門(men)(men)打(da)開的(de)(de)(de)裝置(zhi)。因為早期發(fa)動(dong)(dong)(dong)機(ji)中(zhong)使用(yong)的(de)(de)(de)這(zhe)種裝置(zhi)形(xing)狀像一(yi)根(gen)細桿(gan)(gan)(gan)(gan)(gan),所以被(bei)稱為氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)(gan)(gan)。它的(de)(de)(de)主(zhu)要(yao)功能是將凸(tu)(tu)輪(lun)(lun)的(de)(de)(de)旋轉(zhuan)運(yun)動(dong)(dong)(dong)轉(zhuan)化為往(wang)復運(yun)動(dong)(dong)(dong)。但這(zhe)種結(jie)(jie)構的(de)(de)(de)發(fa)動(dong)(dong)(dong)機(ji)凸(tu)(tu)輪(lun)(lun)軸(zhou)一(yi)般不布置(zhi)在發(fa)動(dong)(dong)(dong)機(ji)頂部(bu)(bu)。隨著現(xian)代(dai)汽(qi)(qi)車發(fa)動(dong)(dong)(dong)機(ji)技術(shu)的(de)(de)(de)發(fa)展,越來(lai)越多的(de)(de)(de)汽(qi)(qi)車發(fa)動(dong)(dong)(dong)機(ji)采用(yong)頂置(zhi)凸(tu)(tu)輪(lun)(lun)軸(zhou)結(jie)(jie)構,其中(zhong)傳統的(de)(de)(de)長(chang)氣(qi)(qi)門(men)(men)挺(ting)(ting)(ting)(ting)柱(zhu)基本(ben)取(qu)(qu)消,取(qu)(qu)而代(dai)之的(de)(de)(de)是由凸(tu)(tu)輪(lun)(lun)軸(zhou)驅動(dong)(dong)(dong)的(de)(de)(de)更加緊(jin)湊(cou)的(de)(de)(de)液(ye)(ye)壓(ya)(ya)(ya)挺(ting)(ting)(ting)(ting)柱(zhu),或者凸(tu)(tu)輪(lun)(lun)軸(zhou)直接(jie)(jie)(jie)驅動(dong)(dong)(dong)氣(qi)(qi)門(men)(men)搖(yao)臂來(lai)控制氣(qi)(qi)門(men)(men)的(de)(de)(de)開閉。液(ye)(ye)壓(ya)(ya)(ya)杠桿(gan)(gan)(gan)(gan)(gan)主(zhu)要(yao)由柱(zhu)塞(sai)、單(dan)向閥(fa)和單(dan)向閥(fa)彈簧組(zu)成(cheng)。液(ye)(ye)壓(ya)(ya)(ya)桿(gan)(gan)(gan)(gan)(gan)始終與凸(tu)(tu)輪(lun)(lun)軸(zhou)接(jie)(jie)(jie)觸,并且無間(jian)(jian)隙(xi)運(yun)行。在挺(ting)(ting)(ting)(ting)桿(gan)(gan)(gan)(gan)(gan)內(nei)部(bu)(bu),液(ye)(ye)壓(ya)(ya)(ya)用(yong)于調整(zheng)(zheng)間(jian)(jian)隙(xi)。液(ye)(ye)壓(ya)(ya)(ya)挺(ting)(ting)(ting)(ting)柱(zhu)主(zhu)要(yao)由柱(zhu)塞(sai)、單(dan)向閥(fa)和單(dan)向閥(fa)彈簧組(zu)成(cheng)。止(zhi)回閥(fa)用(yong)于儲存或釋放油。通(tong)過改變挺(ting)(ting)(ting)(ting)柱(zhu)腔內(nei)的(de)(de)(de)油壓(ya)(ya)(ya),可以改變液(ye)(ye)壓(ya)(ya)(ya)挺(ting)(ting)(ting)(ting)柱(zhu)的(de)(de)(de)工(gong)作(zuo)長(chang)度,從(cong)而自動(dong)(dong)(dong)調整(zheng)(zheng)氣(qi)(qi)門(men)(men)間(jian)(jian)隙(xi)。
力帆(fan)樂途是(shi)力帆(fan)旗下的一款商(shang)務車,采用了1.2L發動機,滿足商(shang)務接待的需求。
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