一、機油泵常用的形式有哪兩種

汽車機油泵按照(zhao)結構形(xing)式不(bu)同，分(fen)為兩大類(lei)型，分(fen)別是(shi)：

1、嚙合齒輪式機油泵

齒(chi)輪(lun)式機油泵由(you)主動(dong)(dong)軸(zhou)、主動(dong)(dong)齒(chi)輪(lun)、從(cong)(cong)動(dong)(dong)軸(zhou)、從(cong)(cong)動(dong)(dong)齒(chi)輪(lun)、殼(ke)體等組成。兩個(ge)齒(chi)數相同的齒(chi)輪(lun)相互嚙(nie)合，裝在殼(ke)體內，齒(chi)輪(lun)與(yu)殼(ke)體的徑向和端面間隙(xi)很小。主動(dong)(dong)軸(zhou)與(yu)主動(dong)(dong)齒(chi)輪(lun)鍵連接，從(cong)(cong)動(dong)(dong)齒(chi)輪(lun)空套在從(cong)(cong)動(dong)(dong)軸(zhou)上(shang)。

工作(zuo)(zuo)時，主(zhu)動齒(chi)輪(lun)(lun)帶(dai)(dai)動從動齒(chi)輪(lun)(lun)反向旋轉(zhuan)。兩(liang)齒(chi)輪(lun)(lun)旋轉(zhuan)時，充滿在齒(chi)輪(lun)(lun)齒(chi)槽間的(de)(de)機油(you)(you)(you)(you)沿油(you)(you)(you)(you)泵(beng)殼壁由進(jin)(jin)油(you)(you)(you)(you)腔(qiang)(qiang)帶(dai)(dai)到(dao)出(chu)油(you)(you)(you)(you)腔(qiang)(qiang)，在進(jin)(jin)油(you)(you)(you)(you)腔(qiang)(qiang)一側(ce)由于齒(chi)輪(lun)(lun)脫開嚙(nie)合(he)以及機油(you)(you)(you)(you)被不斷(duan)帶(dai)(dai)出(chu)而產生真空，使(shi)油(you)(you)(you)(you)底殼內的(de)(de)機油(you)(you)(you)(you)在大(da)氣壓(ya)力作(zuo)(zuo)用下經集濾器進(jin)(jin)入(ru)進(jin)(jin)油(you)(you)(you)(you)腔(qiang)(qiang)，而在出(chu)油(you)(you)(you)(you)腔(qiang)(qiang)一側(ce)由于齒(chi)輪(lun)(lun)進(jin)(jin)入(ru)嚙(nie)合(he)和機油(you)(you)(you)(you)被不斷(duan)帶(dai)(dai)入(ru)而產生擠壓(ya)作(zuo)(zuo)用，機油(you)(you)(you)(you)以一定(ding)壓(ya)力被泵(beng)出(chu)。

一般嚙合(he)齒輪(lun)(lun)式機油泵又(you)分(fen)為內嚙合(he)齒輪(lun)(lun)式機油泵與(yu)外(wai)嚙合(he)齒輪(lun)(lun)式機油泵兩種類(lei)型。

2、轉子式機油泵

轉(zhuan)(zhuan)(zhuan)(zhuan)子式機(ji)油泵(beng)(beng)是(shi)利用內(nei)(nei)外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子壓送潤(run)滑油，又(you)叫次擺線齒輪泵(beng)(beng)。轉(zhuan)(zhuan)(zhuan)(zhuan)子式機(ji)油泵(beng)(beng)主(zhu)要由(you)內(nei)(nei)、外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子，機(ji)油泵(beng)(beng)體及機(ji)油泵(beng)(beng)蓋等(deng)零(ling)件組成(cheng)。主(zhu)動的(de)內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子和從動的(de)外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子都裝在機(ji)油泵(beng)(beng)殼體內(nei)(nei)。內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子有(you)四個凸齒，外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子有(you)五個凹齒。內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子固定在主(zhu)動軸上，外(wai)(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子在油泵(beng)(beng)殼體內(nei)(nei)可以自由(you)轉(zhuan)(zhuan)(zhuan)(zhuan)動，兩者(zhe)之間有(you)一定的(de)偏心距。

當油(you)泵工作時，內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)帶(dai)動(dong)(dong)外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)向同(tong)一個(ge)(ge)方向轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)。由(you)于兩個(ge)(ge)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)的(de)偏(pian)心距(ju)和齒形(xing)輪(lun)廓確保了內(nei)(nei)外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)無論轉(zhuan)(zhuan)(zhuan)(zhuan)到(dao)任何(he)角(jiao)度，各(ge)齒面之間總是線接觸，這樣內(nei)(nei)外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)輪(lun)齒間便(bian)形(xing)成了四個(ge)(ge)工作腔(qiang)。由(you)于內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)的(de)轉(zhuan)(zhuan)(zhuan)(zhuan)速大于外(wai)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)的(de)轉(zhuan)(zhuan)(zhuan)(zhuan)速（傳動(dong)(dong)比5：4），當某(mou)一工作腔(qiang)從(cong)(cong)進(jin)油(you)道轉(zhuan)(zhuan)(zhuan)(zhuan)過時，轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)脫開(kai)嚙合，容積(ji)逐漸增大，產生(sheng)真空(kong)度，潤(run)滑油(you)便(bian)從(cong)(cong)進(jin)油(you)道被(bei)吸入。轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)繼續旋轉(zhuan)(zhuan)(zhuan)(zhuan)，潤(run)滑油(you)被(bei)帶(dai)到(dao)出油(you)道另(ling)一側，這時轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)進(jin)入嚙合，油(you)腔(qiang)容積(ji)逐漸減小，油(you)壓(ya)升高，使油(you)從(cong)(cong)齒間擠出，經出油(you)道送出。

二、齒輪式機油泵和轉子式機油泵哪個好

齒(chi)輪(lun)式機油泵和轉子式機油泵對比起(qi)來，各(ge)有各(ge)的特點：

齒輪式機油(you)(you)(you)(you)(you)泵(beng)(beng)由(you)于結(jie)(jie)構簡單，制造較(jiao)容易，并且工作可(ke)靠(kao)，是應用最為廣泛的一種機油(you)(you)(you)(you)(you)泵(beng)(beng)。轉(zhuan)子(zi)式機油(you)(you)(you)(you)(you)泵(beng)(beng)結(jie)(jie)構緊湊，吸(xi)油(you)(you)(you)(you)(you)真空度較(jiao)高(gao)(gao)，泵(beng)(beng)油(you)(you)(you)(you)(you)量較(jiao)大，且供油(you)(you)(you)(you)(you)均勻，當機油(you)(you)(you)(you)(you)泵(beng)(beng)安裝在曲(qu)軸箱外且位置較(jiao)高(gao)(gao)時，用此種機油(you)(you)(you)(you)(you)泵(beng)(beng)較(jiao)為合適。