一、機油泵常用的形式有哪兩種

汽車機油泵(beng)按照結(jie)構形式不(bu)同，分(fen)為(wei)兩(liang)大(da)類型，分(fen)別是：

1、嚙合齒輪式機油泵

齒(chi)輪(lun)(lun)式機油泵由主動(dong)(dong)軸、主動(dong)(dong)齒(chi)輪(lun)(lun)、從(cong)動(dong)(dong)軸、從(cong)動(dong)(dong)齒(chi)輪(lun)(lun)、殼(ke)(ke)體(ti)等(deng)組成(cheng)。兩(liang)個齒(chi)數相同的齒(chi)輪(lun)(lun)相互嚙合，裝在(zai)殼(ke)(ke)體(ti)內(nei)，齒(chi)輪(lun)(lun)與殼(ke)(ke)體(ti)的徑(jing)向和端(duan)面間隙很小。主動(dong)(dong)軸與主動(dong)(dong)齒(chi)輪(lun)(lun)鍵連接，從(cong)動(dong)(dong)齒(chi)輪(lun)(lun)空套在(zai)從(cong)動(dong)(dong)軸上。

工作(zuo)時，主動齒(chi)(chi)輪(lun)(lun)帶動從動齒(chi)(chi)輪(lun)(lun)反向旋轉。兩齒(chi)(chi)輪(lun)(lun)旋轉時，充滿在(zai)齒(chi)(chi)輪(lun)(lun)齒(chi)(chi)槽(cao)間(jian)的(de)機(ji)(ji)油(you)(you)(you)(you)(you)(you)沿(yan)油(you)(you)(you)(you)(you)(you)泵殼(ke)壁由(you)進(jin)油(you)(you)(you)(you)(you)(you)腔(qiang)(qiang)(qiang)(qiang)帶到出油(you)(you)(you)(you)(you)(you)腔(qiang)(qiang)(qiang)(qiang)，在(zai)進(jin)油(you)(you)(you)(you)(you)(you)腔(qiang)(qiang)(qiang)(qiang)一(yi)側由(you)于齒(chi)(chi)輪(lun)(lun)脫開嚙合(he)以及機(ji)(ji)油(you)(you)(you)(you)(you)(you)被(bei)不(bu)斷帶出而(er)(er)產(chan)(chan)生真空，使油(you)(you)(you)(you)(you)(you)底殼(ke)內的(de)機(ji)(ji)油(you)(you)(you)(you)(you)(you)在(zai)大氣壓力作(zuo)用下經集濾器進(jin)入進(jin)油(you)(you)(you)(you)(you)(you)腔(qiang)(qiang)(qiang)(qiang)，而(er)(er)在(zai)出油(you)(you)(you)(you)(you)(you)腔(qiang)(qiang)(qiang)(qiang)一(yi)側由(you)于齒(chi)(chi)輪(lun)(lun)進(jin)入嚙合(he)和機(ji)(ji)油(you)(you)(you)(you)(you)(you)被(bei)不(bu)斷帶入而(er)(er)產(chan)(chan)生擠壓作(zuo)用，機(ji)(ji)油(you)(you)(you)(you)(you)(you)以一(yi)定(ding)壓力被(bei)泵出。

一般嚙(nie)合(he)齒(chi)輪式(shi)機(ji)油泵(beng)(beng)又分為內嚙(nie)合(he)齒(chi)輪式(shi)機(ji)油泵(beng)(beng)與外嚙(nie)合(he)齒(chi)輪式(shi)機(ji)油泵(beng)(beng)兩(liang)種類型(xing)。

2、轉子式機油泵

轉(zhuan)(zhuan)(zhuan)子(zi)(zi)式(shi)機(ji)(ji)油(you)泵(beng)是利用內(nei)(nei)外(wai)(wai)(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)壓送潤滑油(you)，又(you)叫次擺線齒輪泵(beng)。轉(zhuan)(zhuan)(zhuan)子(zi)(zi)式(shi)機(ji)(ji)油(you)泵(beng)主(zhu)要由(you)內(nei)(nei)、外(wai)(wai)(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)，機(ji)(ji)油(you)泵(beng)體及(ji)機(ji)(ji)油(you)泵(beng)蓋等零件組成。主(zhu)動的內(nei)(nei)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)和從動的外(wai)(wai)(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)都裝在機(ji)(ji)油(you)泵(beng)殼(ke)體內(nei)(nei)。內(nei)(nei)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)有四(si)個凸齒，外(wai)(wai)(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)有五個凹齒。內(nei)(nei)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)固定在主(zhu)動軸(zhou)上(shang)，外(wai)(wai)(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)在油(you)泵(beng)殼(ke)體內(nei)(nei)可以自由(you)轉(zhuan)(zhuan)(zhuan)動，兩(liang)者之間有一定的偏心(xin)距(ju)。

當(dang)油(you)泵工(gong)作(zuo)時，內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)帶(dai)動外轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)向同一個方(fang)向轉(zhuan)(zhuan)(zhuan)(zhuan)動。由于(yu)兩個轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)的偏心距和(he)齒形(xing)輪廓(kuo)確保了內(nei)(nei)外轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)無論轉(zhuan)(zhuan)(zhuan)(zhuan)到(dao)任何角(jiao)度(du)，各齒面(mian)之間(jian)總(zong)是線接觸(chu)，這(zhe)樣內(nei)(nei)外轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)輪齒間(jian)便形(xing)成(cheng)了四個工(gong)作(zuo)腔。由于(yu)內(nei)(nei)轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)的轉(zhuan)(zhuan)(zhuan)(zhuan)速大于(yu)外轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)的轉(zhuan)(zhuan)(zhuan)(zhuan)速（傳(chuan)動比5：4），當(dang)某一工(gong)作(zuo)腔從進(jin)(jin)(jin)油(you)道轉(zhuan)(zhuan)(zhuan)(zhuan)過時，轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)脫開(kai)嚙合，容(rong)積逐(zhu)漸(jian)增(zeng)大，產(chan)生真空度(du)，潤滑油(you)便從進(jin)(jin)(jin)油(you)道被(bei)吸(xi)入。轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)繼續旋轉(zhuan)(zhuan)(zhuan)(zhuan)，潤滑油(you)被(bei)帶(dai)到(dao)出油(you)道另一側，這(zhe)時轉(zhuan)(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)進(jin)(jin)(jin)入嚙合，油(you)腔容(rong)積逐(zhu)漸(jian)減小，油(you)壓(ya)升高，使油(you)從齒間(jian)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

齒輪式機(ji)油泵(beng)和轉(zhuan)子式機(ji)油泵(beng)對比起來，各(ge)有(you)各(ge)的特點：

齒輪式(shi)機(ji)油泵(beng)由(you)于結構(gou)簡(jian)單，制造(zao)較(jiao)容易，并(bing)且(qie)工作可靠，是應用(yong)最(zui)為廣泛的一種機(ji)油泵(beng)。轉子式(shi)機(ji)油泵(beng)結構(gou)緊(jin)湊，吸油真(zhen)空度較(jiao)高，泵(beng)油量較(jiao)大(da)，且(qie)供油均勻，當(dang)機(ji)油泵(beng)安裝在曲軸(zhou)箱外且(qie)位置較(jiao)高時，用(yong)此種機(ji)油泵(beng)較(jiao)為合適(shi)。