一、機油泵常用的形式有哪兩種

汽車機(ji)油泵按(an)照結(jie)構形式不同，分(fen)為(wei)兩大類型，分(fen)別是：

1、嚙合齒輪式機油泵

齒(chi)(chi)(chi)(chi)輪式機油泵由主(zhu)動(dong)(dong)軸、主(zhu)動(dong)(dong)齒(chi)(chi)(chi)(chi)輪、從(cong)(cong)(cong)動(dong)(dong)軸、從(cong)(cong)(cong)動(dong)(dong)齒(chi)(chi)(chi)(chi)輪、殼(ke)(ke)體等組成。兩個齒(chi)(chi)(chi)(chi)數(shu)相(xiang)同的(de)齒(chi)(chi)(chi)(chi)輪相(xiang)互嚙合，裝在殼(ke)(ke)體內，齒(chi)(chi)(chi)(chi)輪與(yu)殼(ke)(ke)體的(de)徑向和端面間隙很(hen)小(xiao)。主(zhu)動(dong)(dong)軸與(yu)主(zhu)動(dong)(dong)齒(chi)(chi)(chi)(chi)輪鍵連接(jie)，從(cong)(cong)(cong)動(dong)(dong)齒(chi)(chi)(chi)(chi)輪空套在從(cong)(cong)(cong)動(dong)(dong)軸上。

工作時，主動齒輪帶(dai)動從動齒輪反向旋(xuan)轉。兩齒輪旋(xuan)轉時，充滿(man)在(zai)齒輪齒槽間(jian)的(de)機(ji)(ji)油(you)(you)(you)沿油(you)(you)(you)泵殼壁由(you)進(jin)(jin)油(you)(you)(you)腔帶(dai)到出油(you)(you)(you)腔，在(zai)進(jin)(jin)油(you)(you)(you)腔一(yi)側由(you)于齒輪脫開嚙(nie)合(he)以及機(ji)(ji)油(you)(you)(you)被(bei)(bei)不斷(duan)帶(dai)出而產(chan)生真空(kong)，使油(you)(you)(you)底殼內的(de)機(ji)(ji)油(you)(you)(you)在(zai)大氣壓(ya)力(li)作用下經集濾(lv)器進(jin)(jin)入進(jin)(jin)油(you)(you)(you)腔，而在(zai)出油(you)(you)(you)腔一(yi)側由(you)于齒輪進(jin)(jin)入嚙(nie)合(he)和機(ji)(ji)油(you)(you)(you)被(bei)(bei)不斷(duan)帶(dai)入而產(chan)生擠壓(ya)作用，機(ji)(ji)油(you)(you)(you)以一(yi)定壓(ya)力(li)被(bei)(bei)泵出。

一(yi)般(ban)嚙(nie)合齒(chi)(chi)輪式(shi)機油(you)(you)泵(beng)又分為內嚙(nie)合齒(chi)(chi)輪式(shi)機油(you)(you)泵(beng)與外嚙(nie)合齒(chi)(chi)輪式(shi)機油(you)(you)泵(beng)兩種類(lei)型。

2、轉子式機油泵

轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)式機油(you)泵(beng)是(shi)利用內(nei)(nei)(nei)(nei)外(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)壓送潤滑油(you)，又叫次擺線齒(chi)(chi)輪泵(beng)。轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)式機油(you)泵(beng)主(zhu)(zhu)要由內(nei)(nei)(nei)(nei)、外(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)，機油(you)泵(beng)體及機油(you)泵(beng)蓋等零件組(zu)成(cheng)。主(zhu)(zhu)動(dong)(dong)的(de)內(nei)(nei)(nei)(nei)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)和從動(dong)(dong)的(de)外(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)都裝在機油(you)泵(beng)殼體內(nei)(nei)(nei)(nei)。內(nei)(nei)(nei)(nei)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)有(you)四個凸齒(chi)(chi)，外(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)有(you)五個凹齒(chi)(chi)。內(nei)(nei)(nei)(nei)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)固定(ding)在主(zhu)(zhu)動(dong)(dong)軸上，外(wai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)(zi)在油(you)泵(beng)殼體內(nei)(nei)(nei)(nei)可以自由轉(zhuan)(zhuan)(zhuan)動(dong)(dong)，兩者之間有(you)一定(ding)的(de)偏心距。

當油(you)(you)(you)泵工作時(shi)，內轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子帶動外轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子向同一(yi)個方向轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動。由于兩(liang)個轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子的(de)(de)偏(pian)心距和齒(chi)(chi)形輪(lun)廓確保了(le)內外轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子無論轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)到(dao)任何(he)角度(du)，各(ge)齒(chi)(chi)面之間(jian)總是線接觸，這(zhe)樣內外轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子輪(lun)齒(chi)(chi)間(jian)便(bian)形成了(le)四個工作腔(qiang)。由于內轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子的(de)(de)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速大(da)于外轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子的(de)(de)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速（傳(chuan)動比5：4），當某一(yi)工作腔(qiang)從進(jin)(jin)油(you)(you)(you)道轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)過(guo)時(shi)，轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子脫開嚙(nie)合(he)，容積逐漸增(zeng)大(da)，產生真空度(du)，潤(run)滑油(you)(you)(you)便(bian)從進(jin)(jin)油(you)(you)(you)道被吸(xi)入(ru)(ru)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子繼(ji)續旋轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)，潤(run)滑油(you)(you)(you)被帶到(dao)出(chu)(chu)油(you)(you)(you)道另一(yi)側，這(zhe)時(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)子進(jin)(jin)入(ru)(ru)嚙(nie)合(he)，油(you)(you)(you)腔(qiang)容積逐漸減(jian)小，油(you)(you)(you)壓升高，使油(you)(you)(you)從齒(chi)(chi)間(jian)擠出(chu)(chu)，經出(chu)(chu)油(you)(you)(you)道送出(chu)(chu)。

二、齒輪式機油泵和轉子式機油泵哪個好

齒輪式(shi)機(ji)油(you)泵(beng)和(he)轉子式(shi)機(ji)油(you)泵(beng)對比起來，各有各的(de)特點：

齒輪式機油(you)(you)泵(beng)由于結構簡單(dan)，制(zhi)造(zao)較(jiao)(jiao)容(rong)易，并且工(gong)作可靠，是應用最為(wei)(wei)廣泛的一種機油(you)(you)泵(beng)。轉子式機油(you)(you)泵(beng)結構緊(jin)湊，吸(xi)油(you)(you)真空度較(jiao)(jiao)高，泵(beng)油(you)(you)量較(jiao)(jiao)大，且供油(you)(you)均勻(yun)，當機油(you)(you)泵(beng)安裝在曲(qu)軸箱外且位置較(jiao)(jiao)高時(shi)，用此種機油(you)(you)泵(beng)較(jiao)(jiao)為(wei)(wei)合(he)適。