一、機油泵常用的形式有哪兩種

汽車(che)機油泵(beng)按照結(jie)構形(xing)式不同(tong)，分為兩大類型，分別是(shi)：

1、嚙合齒輪式機油泵

齒(chi)輪(lun)(lun)式機油(you)泵(beng)由主(zhu)(zhu)動(dong)軸、主(zhu)(zhu)動(dong)齒(chi)輪(lun)(lun)、從(cong)動(dong)軸、從(cong)動(dong)齒(chi)輪(lun)(lun)、殼體等組成。兩個(ge)齒(chi)數相(xiang)同的齒(chi)輪(lun)(lun)相(xiang)互嚙(nie)合，裝在(zai)殼體內，齒(chi)輪(lun)(lun)與殼體的徑向和端面間隙很(hen)小。主(zhu)(zhu)動(dong)軸與主(zhu)(zhu)動(dong)齒(chi)輪(lun)(lun)鍵連(lian)接，從(cong)動(dong)齒(chi)輪(lun)(lun)空(kong)套在(zai)從(cong)動(dong)軸上。

工(gong)作(zuo)時(shi)，主(zhu)動(dong)齒輪帶動(dong)從(cong)動(dong)齒輪反向旋轉。兩(liang)齒輪旋轉時(shi)，充(chong)滿(man)在齒輪齒槽間的機(ji)(ji)(ji)油(you)(you)(you)(you)(you)沿油(you)(you)(you)(you)(you)泵殼(ke)壁由(you)進(jin)(jin)油(you)(you)(you)(you)(you)腔(qiang)帶到出油(you)(you)(you)(you)(you)腔(qiang)，在進(jin)(jin)油(you)(you)(you)(you)(you)腔(qiang)一側由(you)于齒輪脫(tuo)開嚙(nie)合以及機(ji)(ji)(ji)油(you)(you)(you)(you)(you)被不斷帶出而產生真空，使油(you)(you)(you)(you)(you)底殼(ke)內的機(ji)(ji)(ji)油(you)(you)(you)(you)(you)在大氣壓(ya)力作(zuo)用下經(jing)集濾(lv)器進(jin)(jin)入(ru)進(jin)(jin)油(you)(you)(you)(you)(you)腔(qiang)，而在出油(you)(you)(you)(you)(you)腔(qiang)一側由(you)于齒輪進(jin)(jin)入(ru)嚙(nie)合和機(ji)(ji)(ji)油(you)(you)(you)(you)(you)被不斷帶入(ru)而產生擠壓(ya)作(zuo)用，機(ji)(ji)(ji)油(you)(you)(you)(you)(you)以一定(ding)壓(ya)力被泵出。

一般嚙(nie)合(he)齒(chi)(chi)輪式(shi)(shi)機(ji)油(you)泵(beng)又分(fen)為內(nei)嚙(nie)合(he)齒(chi)(chi)輪式(shi)(shi)機(ji)油(you)泵(beng)與外(wai)嚙(nie)合(he)齒(chi)(chi)輪式(shi)(shi)機(ji)油(you)泵(beng)兩種(zhong)類型(xing)。

2、轉子式機油泵

轉(zhuan)子(zi)(zi)(zi)(zi)式機(ji)(ji)油(you)泵是利用(yong)內(nei)外(wai)(wai)(wai)轉(zhuan)子(zi)(zi)(zi)(zi)壓送(song)潤(run)滑油(you)，又叫(jiao)次擺線齒(chi)輪泵。轉(zhuan)子(zi)(zi)(zi)(zi)式機(ji)(ji)油(you)泵主(zhu)(zhu)要由內(nei)、外(wai)(wai)(wai)轉(zhuan)子(zi)(zi)(zi)(zi)，機(ji)(ji)油(you)泵體(ti)(ti)及機(ji)(ji)油(you)泵蓋(gai)等(deng)零件組成。主(zhu)(zhu)動的(de)(de)內(nei)轉(zhuan)子(zi)(zi)(zi)(zi)和從(cong)動的(de)(de)外(wai)(wai)(wai)轉(zhuan)子(zi)(zi)(zi)(zi)都裝在(zai)(zai)機(ji)(ji)油(you)泵殼體(ti)(ti)內(nei)。內(nei)轉(zhuan)子(zi)(zi)(zi)(zi)有四(si)個(ge)凸齒(chi)，外(wai)(wai)(wai)轉(zhuan)子(zi)(zi)(zi)(zi)有五個(ge)凹齒(chi)。內(nei)轉(zhuan)子(zi)(zi)(zi)(zi)固定在(zai)(zai)主(zhu)(zhu)動軸上，外(wai)(wai)(wai)轉(zhuan)子(zi)(zi)(zi)(zi)在(zai)(zai)油(you)泵殼體(ti)(ti)內(nei)可以自由轉(zhuan)動，兩(liang)者之間(jian)有一定的(de)(de)偏心距。

當(dang)油(you)(you)(you)泵工(gong)作時，內(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)帶(dai)動外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)向同一個方向轉(zhuan)(zhuan)(zhuan)(zhuan)動。由于兩個轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)的偏心(xin)距和齒(chi)形輪廓確保了(le)內(nei)外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)無論轉(zhuan)(zhuan)(zhuan)(zhuan)到(dao)任何角(jiao)度，各齒(chi)面之間(jian)總是線(xian)接觸，這樣內(nei)外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)輪齒(chi)間(jian)便形成了(le)四個工(gong)作腔。由于內(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)的轉(zhuan)(zhuan)(zhuan)(zhuan)速大于外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)的轉(zhuan)(zhuan)(zhuan)(zhuan)速（傳(chuan)動比5：4），當(dang)某(mou)一工(gong)作腔從(cong)(cong)進(jin)油(you)(you)(you)道(dao)轉(zhuan)(zhuan)(zhuan)(zhuan)過時，轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)脫開嚙(nie)(nie)合(he)，容(rong)積逐(zhu)漸(jian)增大，產(chan)生(sheng)真(zhen)空度，潤(run)滑油(you)(you)(you)便從(cong)(cong)進(jin)油(you)(you)(you)道(dao)被吸入。轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)繼續旋轉(zhuan)(zhuan)(zhuan)(zhuan)，潤(run)滑油(you)(you)(you)被帶(dai)到(dao)出(chu)(chu)油(you)(you)(you)道(dao)另一側，這時轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)進(jin)入嚙(nie)(nie)合(he)，油(you)(you)(you)腔容(rong)積逐(zhu)漸(jian)減(jian)小，油(you)(you)(you)壓升(sheng)高，使油(you)(you)(you)從(cong)(cong)齒(chi)間(jian)擠出(chu)(chu)，經出(chu)(chu)油(you)(you)(you)道(dao)送出(chu)(chu)。

二、齒輪式機油泵和轉子式機油泵哪個好

齒輪式機油泵(beng)和轉子式機油泵(beng)對比起來，各有各的特(te)點：

齒輪式(shi)機(ji)油(you)(you)泵(beng)由于結構(gou)簡單，制造(zao)較容易，并且(qie)工作可靠，是(shi)應(ying)用(yong)最為廣泛的一種(zhong)機(ji)油(you)(you)泵(beng)。轉子式(shi)機(ji)油(you)(you)泵(beng)結構(gou)緊湊，吸油(you)(you)真空度(du)較高，泵(beng)油(you)(you)量較大，且(qie)供油(you)(you)均勻(yun)，當機(ji)油(you)(you)泵(beng)安裝在曲軸箱外且(qie)位(wei)置(zhi)較高時，用(yong)此種(zhong)機(ji)油(you)(you)泵(beng)較為合適。