實際膠質及其危害

實際(ji)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)是(shi)指100ml燃料(liao)(liao)(liao)在(zai)試驗(yan)條件下所含有(you)的(de)(de)(de)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)毫克數(shu),包括燃料(liao)(liao)(liao)中實際(ji)含有(you)的(de)(de)(de)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)和測試過程中新產生(sheng)的(de)(de)(de)部分膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)(另-部分溶(rong)于輕(qing)質(zhi)(zhi)(zhi)(zhi)燃料(liao)(liao)(liao)油(you)(you)(you)(you)中的(de)(de)(de)低分子膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)隨油(you)(you)(you)(you)-起(qi)蒸發(fa)散失)。它代表油(you)(you)(you)(you)品(pin)(pin)抗氧化(hua)安定(ding)性(xing)的(de)(de)(de)強弱，揭示油(you)(you)(you)(you)品(pin)(pin)在(zai)發(fa)動機(ji)進氣管道及進氣閥_上生(sheng)成粘(zhan)附(fu)性(xing)沉(chen)積(ji)(ji)物(wu)的(de)(de)(de)傾(qing)向,參與監控庫存油(you)(you)(you)(you)品(pin)(pin)的(de)(de)(de)質(zhi)(zhi)(zhi)(zhi)量動態。輕(qing)質(zhi)(zhi)(zhi)(zhi)燃料(liao)(liao)(liao)油(you)(you)(you)(you)中的(de)(de)(de)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)以(yi)其(qi)溶(rong)解(jie)度為標準可分為三種類(lei)型(xing):不可溶(rong)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)即沉(chen)渣(zha)、可溶(rong)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)一它是(shi)使(shi)(shi)輕(qing)質(zhi)(zhi)(zhi)(zhi)油(you)(you)(you)(you)料(liao)(liao)(liao)顏色變(bian)黃和變(bian)深的(de)(de)(de)“元兇"以(yi)及同(tong)沉(chen)渣(zha)-起(qi)共(gong)存的(de)(de)(de)粘(zhan)附(fu)性(xing)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)。從(cong)供油(you)(you)(you)(you)系統和發(fa)動機(ji)工作(zuo)狀態看,使(shi)(shi)用(yong)含膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)多(duo)(duo)的(de)(de)(de)燃料(liao)(liao)(liao),會在(zai)油(you)(you)(you)(you)箱中析(xi)出(chu)粘(zhan)稠沉(chen)積(ji)(ji)物(wu),這種沉(chen)積(ji)(ji)物(wu)會使(shi)(shi)新加人油(you)(you)(you)(you)箱的(de)(de)(de)油(you)(you)(you)(you)料(liao)(liao)(liao)迅速(su)變(bian)質(zhi)(zhi)(zhi)(zhi),從(cong)而導致(zhi)油(you)(you)(you)(you)路堵塞、積(ji)(ji)炭增(zeng)多(duo)(duo)、磨損加劇、功率降(jiang)低、粘(zhan)卡氣門和突然停車。實際(ji)膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)愈(yu)(yu)大(da),每(mei)百公里(li)耗油(you)(you)(you)(you)愈(yu)(yu)多(duo)(duo),發(fa)動仉保(bao)障正常行使(shi)(shi)的(de)(de)(de)里(li)程愈(yu)(yu)短。此外,膠(jiao)(jiao)質(zhi)(zhi)(zhi)(zhi)的(de)(de)(de)生(sheng)成會促使(shi)(shi)輕(qing)質(zhi)(zhi)(zhi)(zhi)燃料(liao)(liao)(liao)油(you)(you)(you)(you)顏色變(bian)黃變(bian)深、酸度增(zeng)大(da)、腐(fu)蝕(shi)加強、品(pin)(pin)質(zhi)(zhi)(zhi)(zhi)惡化(hua)、存期縮短。

因此，除煉(lian)制(zhi)過程中把硫含量、膠質值作(zuo)為監(jian)控項(xiang)目外,輕質燃料油因需(xu)作(zuo)戰略儲備,對上述兩項(xiang)指標(biao)都(dou)提(ti)出更(geng)高要求。