當(dāng)凸輪的凸起有些轉(zhuǎn)過(guò)去后,在彈簧力的作用下,柱塞向下運(yùn)動(dòng),柱塞上部空間(稱為泵油室)發(fā)作真空度,當(dāng)柱塞上端面把柱塞套上的進(jìn)油孔翻開(kāi)后,布滿在油泵上體油道內(nèi)的柴油經(jīng)油孔進(jìn)入泵油室,柱塞運(yùn)動(dòng)到下止點(diǎn),進(jìn)油完畢。
當(dāng)凸輪軸轉(zhuǎn)到凸輪的凸起有些頂起滾輪體時(shí),柱塞彈簧被緊縮,柱塞向上運(yùn)動(dòng),燃油受壓,一有些燃油經(jīng)油孔流回噴油泵上體油腔。當(dāng)柱塞頂面遮住套筒行進(jìn)油孔的上緣時(shí),因?yàn)橹吞淄驳膮f(xié)作空位很小使柱塞頂部的泵油室成為一個(gè)密封油腔,柱塞持續(xù)上升,泵油室內(nèi)的油壓活絡(luò)增加,泵油壓力>出油閥彈簧力+高壓油管剩下壓力時(shí),推開(kāi)出油閥,高壓柴油經(jīng)出油閥進(jìn)入高壓油管,經(jīng)過(guò)噴油器噴入燃燒室。
LS-G02-2AB-30 LS-G02-2AC-30 LS-G02-2AD-30 LS-G02-2AP-20
LS-G02-3AB-30 LS-G02-3AC-30 LS-G02-3AD-30 LS-G02-3AP-20
LS-G02-2BB-30 LS-G02-2BC-30 LS-G02-2BD-30 LS-G02-2BP-20
LS-G02-5CB-30 LS-G02-5CC-30 LS-G02-5CD-30 LS-G02-5CP-20
LS-G02-66CB-30 LS-G02-66CC-30 LS-G02-66CD-30 LS-G02-66CP-20
LS-G02-7CB-30 LS-G02-7CC-30 LS-G02-7CD-30 LS-G02-7CP-20
LS-G02-8CB-30 LS-G02-8CC-30 LS-G02-8CD-30 LS-G02-8CP-20