?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+PEMANFAATAN+ZEOLIT+PELET+ASAM-FISIK+DENGAN+%0D%0ANORMALITAS+TINGGI+TERHADAP+PRESTASI+MESIN+DIESEL+%0D%0A4-LANGKAH%0D%0A&rft.creator=Juni+Eko+Purnomo%2C+0912021006&rft.subject=Teknik+mesin+dan+mesin&rft.description=Salah+satu+solusi+yang+dapat+dilakukan+untuk+menghemat+bahan+bakar+minyak+sekarang+ini+adalah+dengan+memaksimalkan+udara+yang+akan+digunakan+dalam+proses+pembakaran.+Zeolit+alam+yang+teraktivasi+asam-fisik+mampu+menyaring++nitrogen+dan+uap+air+dan+hanya+oksigen+murni+yang+masuk+dalam+ruang+pembakaran%2C+sehingga+terjadilah+pembakaran+yang+sempurna.+Peningkatan+nilai+konsentrasi+pada+aktivasi+kimia+dapat+mempengaruhi+kemampuan+absorpsi+zeolit.+Semakin+tinggi+nilai+konsentrasi+asam+yang+digunakan%2C+maka+semakin+bertambah+luas+permukaan+spesifik+pori-pori+zeolit+dan+menyebabkan+zeolit+menjadi+aktif.+Penelitian+ini+bertujuan+untuk+melihat+pengaruh+pemanfaatan+filter+zeolit+pelet+terhadap+prestasi+mesin+diesel+4-langkah.%0D%0A++%0D%0APenelitian+ini+dilakukan+dengan+menggunakan+variasi+normalitas+tinggi+pada+masing-masing+larutan+aktivator+HCl+dan+H2SO4+dengan+nilai+konsentrasi+1N%2C+2N%2C+3N%2C+dan+4N%2C+dengan+aktivasi+fisik+pada+200+0C+selama+1+jam.+Pengujian+yang+dilakukan+dengan+variasi+massa+rapat+dan+renggang+pada+uji+prestasi+mesin+diesel+4-langkah.+Mesin+dioperasikan+pada+putaran+rendah+(1500+rpm)%2C+putaran+menengah+(2000+rpm)%2C+dan+putaran+tinggi+(2500+dan+3000+rpm).+Pelet+tersebut+dikemas+dalam+suatu+frame+filter+dan+diletakkan+pada+saringan+udara+mesin+uji+sehingga+sebelum+udara+masuk+ke+dalam+ruang+bakar%2C+terlebih+dahulu+terkontak+dengan+pelet+zeolit.%0D%0A%0D%0AHasil+penelitian+menunjukkan+bahwa+pelet+teraktivasi+HCl-fisik+dengan+nilai+konsentrasi+1N+dapat+meningkatkan+daya+engkol+sebesar+2%2C303+%25+dan+menurunkan+konsumsi+bahan+bakar+spesifik+sebesar+3%2C151+%25+pada+putaran+menengah.+Sedangkan+pada+penggunaan+zeolit+pelet+teraktivasi+H2SO4+1N+dapat+meningkatkan+daya+engkol+sebesar+2%2C157+%25+dan+menurunkan+konsumsi+bahan+bakar+spesifik+sebesar+2%2C867+%25.+Penggunaan+zeolit+teraktivasi+HCl-fisik+lebih+baik+dibandingkan+dengan+zeolit+teraktivasi+H2SO4-fisik+walaupun+tidak+signifikan%2C+yaitu+kenaikan+daya+engkol+rata-rata+sebesar+2%2C063+%25+pada+HCl+dan+sebesar+1%2C958+%25+kenaikan+pada+H2SO4.+Penghematan+konsumsi+bahan+bakar+rata-rata+sebesar+3%2C308+%25+pada+HCl+dan+sebesar+3%2C125+%25+pada+H2SO4.%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0ANowadays%2C+one+of+the+solutions+to+save+fuel+is+to+maximize+the+air+in+the+combustion+process.+Natural+zeolite+that+is+physically+and+chemically+activated+is+capable+to+filter+nitrogen+and+water+vapor+so+that+only+pure+oxygen+that+come+into+the+combustion+chamber+in+order+to+make+a+complete+combustion.+The+increase+of+the+concentration+on+chemical+activation+may+affect+the+adsorption+ability+of+the+zeolite.+Higher+concentration+of+acid+used+results+the+wider+specific+surface+area+of+zeolite+pores+and+makes+the+zeolite+become+active.+This+research+aims+to+observe+the+effect+of+using+zeolite+pellets+as+adsorbent+to+increase+the+performance+of+a+4-strokes+diesel+engine.%0D%0A++%0D%0AThis+research+was+tested+in+high+normality+variation+of+activator%2C+HCl+and+H2SO4%2C+with+the+concentration+of+1N%2C+2N%2C+3N%2C+and+4N%2C+and+physical+activation+at+200+0C+for+1+hour.+The+tests+were+conducted+in+dense+and+distant+zeolite+arrangement+variations+of+a+4-strokes+diesel+engines.+The+engine+was+operated+at+low+speed+(1500+rpm)%2C+medium+speed+(2000+rpm)%2C+and+high+speed+(2500+and+3000+rpm).+The+pellets+were+put+on+a+frame+of+filter.+Then%2C+that+frame+was+placed+on+the+air+filter+of+the+engine+so+that+before+the+air+came+into+the+combustion+chamber%2C+it+firsly+contacted+with+the+zeolite+pellets.%0D%0A%0D%0AThe+results+showed+that+the+pellet+activated+using+HCl+at+1N+increased+the+brake+power+of+2.303%25+and+decreased+brake+specific+fuel+consumption+of+3.151%25+in+the+medium+speed.+While%2C+the+use+of+zeolite+pellets+activated+using+H2SO4+with+1N+consentration+increased+the+brake+power+of+2%2C157%25+and+decreased+brake+specific+fuel+consumption+of+2.867%25.+The+use+of+HCl-physical+zeolite+was+better+compared+to+the+one+that+was+activated+using+H2SO4+although+the+difference+was+not+significant.+Which+were%2C+the+average+increase+of+the+brake+power+of+2%2C063%25+using+HCl+and+of+1.958%25+using+H2SO4.+The+average+decrease+of+the+fuel+consumption+of+3.308%25+HCl+and+of+3.125%25+for+H2SO4.%0D%0A&rft.publisher=Fakultas+Teknik&rft.date=2015-01-06&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F2%2FABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F3%2FCOVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F4%2FHALAMAN%2520PERSETUJUAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F5%2FHALAMAN%2520PENGESAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F6%2FPERNYATAAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F7%2FRIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F8%2FPERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F9%2FMOTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F10%2FSANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F11%2FDAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F12%2FDAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F13%2FDAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F14%2FDAFTAR%2520NOTASI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F15%2FBAB%2520I.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F16%2FBAB%2520II.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F17%2FBAB%2520III.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F19%2FBAB%2520IV.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F18%2FBAB%2520V.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F20%2FDAFTAR%2520PUSTAKA.pdf&rft.identifier=++Juni+Eko+Purnomo%2C+0912021006++(2015)+PENGARUH+PEMANFAATAN+ZEOLIT+PELET+ASAM-FISIK+DENGAN+NORMALITAS+TINGGI+TERHADAP+PRESTASI+MESIN+DIESEL+4-LANGKAH.++Fakultas+Teknik%2C+Universitas+Lampung.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F7371%2F