油(you)(you)(you)研(yan)油(you)(you)(you)泵(beng)(beng)的原理(li)是(shi)通(tong)過(guo)(guo)機(ji)械或電動的方式(shi)(shi)將(jiang)液(ye)體（通(tong)常是(shi)油(you)(you)(you)）從儲存器中(zhong)抽(chou)出(chu)并送(song)到(dao)需要使用(yong)(yong)的地方。油(you)(you)(you)泵(beng)(beng)通(tong)常由泵(beng)(beng)體、泵(beng)(beng)芯(xin)、傳動機(ji)構、進出(chu)口管(guan)路(lu)、密封件(jian)等(deng)組成(cheng)。當(dang)油(you)(you)(you)泵(beng)(beng)工(gong)作時(shi)，泵(beng)(beng)芯(xin)在傳動機(ji)構的作用(yong)(yong)下不(bu)斷上下運動，形成(cheng)一定的容積變化，使得油(you)(you)(you)液(ye)從進口管(guan)路(lu)進入泵(beng)(beng)體，再通(tong)過(guo)(guo)出(chu)口管(guan)路(lu)送(song)到(dao)需要使用(yong)(yong)的地方。油(you)(you)(you)研(yan)油(you)(you)(you)泵(beng)(beng)的工(gong)作原理(li)可以分為(wei)正(zheng)壓(ya)(ya)式(shi)(shi)和(he)(he)負壓(ya)(ya)式(shi)(shi)兩(liang)種，其中(zhong)正(zheng)壓(ya)(ya)式(shi)(shi)油(you)(you)(you)泵(beng)(beng)是(shi)通(tong)過(guo)(guo)增(zeng)加(jia)壓(ya)(ya)力(li)將(jiang)油(you)(you)(you)液(ye)送(song)出(chu)，而負壓(ya)(ya)式(shi)(shi)油(you)(you)(you)泵(beng)(beng)則(ze)是(shi)通(tong)過(guo)(guo)減小(xiao)壓(ya)(ya)力(li)將(jiang)油(you)(you)(you)液(ye)抽(chou)出(chu)。油(you)(you)(you)研(yan)油(you)(you)(you)泵(beng)(beng)的密封件(jian)包括軸(zhou)封和(he)(he)閥座環，它們通(tong)過(guo)(guo)摩擦(ca)力(li)將(jiang)泵(beng)(beng)內的原油(you)(you)(you)密封起來，避免(mian)原油(you)(you)(you)泄(xie)露。