一、機油泵常用的形式有哪兩種

汽(qi)車機油(you)泵(beng)按(an)照結構形式不同，分(fen)為兩大類型，分(fen)別(bie)是：

1、嚙合齒輪式機油泵

齒(chi)(chi)輪式機(ji)油泵(beng)由主(zhu)(zhu)動(dong)(dong)軸、主(zhu)(zhu)動(dong)(dong)齒(chi)(chi)輪、從(cong)動(dong)(dong)軸、從(cong)動(dong)(dong)齒(chi)(chi)輪、殼(ke)(ke)體(ti)(ti)等(deng)組成。兩(liang)個齒(chi)(chi)數(shu)相同的(de)齒(chi)(chi)輪相互嚙(nie)合，裝在(zai)殼(ke)(ke)體(ti)(ti)內，齒(chi)(chi)輪與(yu)殼(ke)(ke)體(ti)(ti)的(de)徑向(xiang)和端(duan)面間隙很小。主(zhu)(zhu)動(dong)(dong)軸與(yu)主(zhu)(zhu)動(dong)(dong)齒(chi)(chi)輪鍵連接(jie)，從(cong)動(dong)(dong)齒(chi)(chi)輪空套在(zai)從(cong)動(dong)(dong)軸上。

工(gong)作(zuo)時，主動(dong)(dong)齒輪帶(dai)動(dong)(dong)從動(dong)(dong)齒輪反向旋轉。兩齒輪旋轉時，充滿在(zai)齒輪齒槽間的(de)機(ji)油(you)(you)(you)沿油(you)(you)(you)泵(beng)殼壁由(you)進(jin)(jin)(jin)油(you)(you)(you)腔帶(dai)到出(chu)油(you)(you)(you)腔，在(zai)進(jin)(jin)(jin)油(you)(you)(you)腔一(yi)側(ce)由(you)于(yu)齒輪脫開嚙(nie)合以及機(ji)油(you)(you)(you)被(bei)不(bu)斷(duan)帶(dai)出(chu)而(er)產(chan)生真空，使油(you)(you)(you)底殼內的(de)機(ji)油(you)(you)(you)在(zai)大氣壓(ya)力作(zuo)用下經(jing)集濾(lv)器進(jin)(jin)(jin)入進(jin)(jin)(jin)油(you)(you)(you)腔，而(er)在(zai)出(chu)油(you)(you)(you)腔一(yi)側(ce)由(you)于(yu)齒輪進(jin)(jin)(jin)入嚙(nie)合和機(ji)油(you)(you)(you)被(bei)不(bu)斷(duan)帶(dai)入而(er)產(chan)生擠壓(ya)作(zuo)用，機(ji)油(you)(you)(you)以一(yi)定壓(ya)力被(bei)泵(beng)出(chu)。

一(yi)般嚙合齒輪式機油(you)(you)泵(beng)又分為(wei)內嚙合齒輪式機油(you)(you)泵(beng)與外嚙合齒輪式機油(you)(you)泵(beng)兩種類型。

2、轉子式機油泵

轉(zhuan)(zhuan)子(zi)(zi)式(shi)機油(you)(you)(you)泵(beng)(beng)(beng)是(shi)利(li)用內(nei)外(wai)(wai)轉(zhuan)(zhuan)子(zi)(zi)壓送潤滑(hua)油(you)(you)(you)，又叫次(ci)擺線(xian)齒(chi)輪(lun)泵(beng)(beng)(beng)。轉(zhuan)(zhuan)子(zi)(zi)式(shi)機油(you)(you)(you)泵(beng)(beng)(beng)主要由內(nei)、外(wai)(wai)轉(zhuan)(zhuan)子(zi)(zi)，機油(you)(you)(you)泵(beng)(beng)(beng)體及(ji)機油(you)(you)(you)泵(beng)(beng)(beng)蓋等零件組成。主動的(de)內(nei)轉(zhuan)(zhuan)子(zi)(zi)和從動的(de)外(wai)(wai)轉(zhuan)(zhuan)子(zi)(zi)都裝在(zai)(zai)機油(you)(you)(you)泵(beng)(beng)(beng)殼體內(nei)。內(nei)轉(zhuan)(zhuan)子(zi)(zi)有四個凸齒(chi)，外(wai)(wai)轉(zhuan)(zhuan)子(zi)(zi)有五(wu)個凹齒(chi)。內(nei)轉(zhuan)(zhuan)子(zi)(zi)固(gu)定在(zai)(zai)主動軸上，外(wai)(wai)轉(zhuan)(zhuan)子(zi)(zi)在(zai)(zai)油(you)(you)(you)泵(beng)(beng)(beng)殼體內(nei)可以自由轉(zhuan)(zhuan)動，兩者之間(jian)有一定的(de)偏心(xin)距。

當油(you)(you)泵工作時(shi)，內(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)帶動(dong)外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)向(xiang)同一個方向(xiang)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)。由于兩(liang)個轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)的(de)偏心距(ju)和齒(chi)形(xing)輪廓(kuo)確保了內(nei)外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)無(wu)論轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)到任何角度，各(ge)齒(chi)面(mian)之間總(zong)是線接觸(chu)，這(zhe)樣(yang)內(nei)外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)輪齒(chi)間便形(xing)成了四個工作腔(qiang)。由于內(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)的(de)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)大(da)于外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)的(de)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)（傳動(dong)比5：4），當某一工作腔(qiang)從進(jin)油(you)(you)道轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)過時(shi)，轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)脫開嚙合(he)，容積(ji)逐漸增大(da)，產生真空度，潤滑油(you)(you)便從進(jin)油(you)(you)道被吸(xi)入(ru)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)繼續旋轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)，潤滑油(you)(you)被帶到出油(you)(you)道另一側，這(zhe)時(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)進(jin)入(ru)嚙合(he)，油(you)(you)腔(qiang)容積(ji)逐漸減小，油(you)(you)壓(ya)升高，使油(you)(you)從齒(chi)間擠出，經出油(you)(you)道送出。

二、齒輪式機油泵和轉子式機油泵哪個好

齒輪式機(ji)油泵和(he)轉子式機(ji)油泵對比起(qi)來(lai)，各有各的特(te)點：

齒輪式機(ji)(ji)油(you)泵(beng)(beng)由于結構簡單(dan)，制造較(jiao)(jiao)容易，并且(qie)工作(zuo)可靠，是(shi)應用最為廣泛的(de)一種(zhong)(zhong)機(ji)(ji)油(you)泵(beng)(beng)。轉(zhuan)子(zi)式機(ji)(ji)油(you)泵(beng)(beng)結構緊湊，吸(xi)油(you)真空度較(jiao)(jiao)高(gao)，泵(beng)(beng)油(you)量較(jiao)(jiao)大，且(qie)供油(you)均勻，當機(ji)(ji)油(you)泵(beng)(beng)安裝在(zai)曲軸箱外且(qie)位置較(jiao)(jiao)高(gao)時，用此種(zhong)(zhong)機(ji)(ji)油(you)泵(beng)(beng)較(jiao)(jiao)為合適。