?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PERBANDINGAN+PEMANFAATAN+FLY+ASH+BATUBARA+YANG+DIAKTIFASI+SECARA+FISIK+DAN+NaOH-FISIK+DENGAN+VARIASI+NORMALITAS+TERHADAP+PRESTASI+MESIN+MOTOR++DIESEL+4-LANGKAH&rft.creator=SETIA+WASIS%2C+0915021012&rft.subject=Teknik+mesin+dan+mesin&rft.subject=Kendaraan+bermotor.+Aeronautika+.+astronautika&rft.description=ABSTRAK%0D%0A%0D%0APada++proses++pembakaran%2C++oksigen++adalah++gas++yang++paling++diperlukan++untuk+%0D%0Amelangsungkan++proses++pembakaran.++Semakin++tinggi++kadar++oksigen++dalam++udara%2C+%0D%0Amaka++proses++pembakaran++akan++semakin++optimal.+Fly++ash+merupakan++senyawa+%0D%0Aalumina++silikat++yang++secara++fisik++dan+kimia+++mempunyai+++kemampuan++sebagai+%0D%0Apenyerap+(adsorben).%0D%0ADalam+penelitian++ini+kemampuan+fly++ash+sebagai++adsorben++dimanfaatkan+untuk+%0D%0Amenyaring+udara+pada+saat+proses+pembakaran+agar++meningkatkan+prestasi+motor+%0D%0Adiesel++4-langkah%2C+fly++ash+diberikan++dua+proses++aktivasi+yaitu++aktivasi++fisik++dan+%0D%0Akimia-fisik+menggunakan+NaOH+dengan+normalitas+0%2C25N%3B+0%2C50N%3B+dan+0%2C75N+dan+%0D%0Aaktivasi+fisik+dengan+temperatur+150%0D%0Ao%0D%0AC+selama+1+jam+serta+variasi+massa+25+gram%2C+%0D%0A50++gram++dan++75++gram%2C+yang+bertujuan++membersihkan++permukaan++pori++dan+%0D%0Amembuang+senyawa+pengotor+pada+fly+ash.+Sehingga+udara+yang+telah+tersaring+fly+%0D%0Aash+lebih+kaya+oksigen+dan+membuat+proses+pembakaran+motor+diesel+4-langkah+%0D%0Amenjadi+lebih+baik%2C+yang+mengakibatkan+meningkatnya+prestasi+mesin.%0D%0ADari+hasil+pengujian+dan+analisa+didapatkan+bahwa+dengan+menggunakan+fly+ash%0D%0Ayang+diaktivasi+fisik++dan++NaOH-fisik++dapat++meningkatkan++prestasi++mesin.+%0D%0AHasilnya++menunjukkan++bahwa+peningkatan++daya++engkol++rata-rata++terbaik+terjadi+%0D%0Apada++penggunaan+fly++ash++pelet++yang++diaktivasi++fisik++dan++NaOH-fisik++dengan+%0D%0Avariasi+normalitas+yaitu+terjadi+pada+penggunaan+fly+ash+pelet+aktivasi+NaOH-fisik+%0D%0Anormalitas++0%2C50N++dengan++massa++75++gram++yaitu++sebesar++2%2C2446++%25%2C+diikuti++oleh+%0D%0Apelet+aktivasi+NaOH-fisik+normalitas+0%2C25N+dengan+massa+75+gram+yaitu+sebesar+%0D%0A1%2C8991++%25.+Dan+penurunan++konsumsi++bahan++bakar++spesifik+terbaik++yaitu++terjadi+%0D%0Apada+penggunaan+fly+ash+pelet+aktivasi+fisik+dengan+massa+50+gram+yaitu+sebesar+%0D%0A4%2C4404++%25%2C++namun++secara++rata-rata++penurunan+konsumsi++bahan++bakar++spesifik+%0D%0Aterbaik++yaitu++terjadi++pada++penggunaan++fly++ash++pellet++aktivasi++NaOH-fisik+%0D%0Anormalitas+0%2C75N+yaitu+sebesar+3%2C7425+%25%2C+diikuti+oleh+pelet+aktivasi+NaOH-fisik%0D%0Anormalitas+0%2C50N+yaitu+sebesar+3%2C5893+%25%2C+sedangkan+aktivasi+fisik+yaitu+sebesar+%0D%0A2%2C9275+%25.%0D%0AKata+kunci%3A+fly+ash+aktivasi+fisik%2C+NaOH-fisik%2C+adsorben%2C+prestasi+motor+diesel.%0D%0A%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0AOxygen+is+the+most+important+gas+needed+in+the+combustion+process.+Higher+level%0D%0Aof+oxygen+in+the+air%2C+the+combustion+process+would+be+more+optimal.+Fly+ash+is+an%0D%0Aalumina+silicate+compound+which+was+physically+and+chemically+has+ability+as+an+%0D%0Aabsorbent.%0D%0AIn+this+study%2C+the+ability+of+fly+ash+as+an+adsorbent+was+used+to+filter+the+air+during+%0D%0Athe+combustion+process+in+order+to+increase+performance+of+a+4-stroke+diesel%0D%0Aengine.++Fly++ash++was++given++two++activation++processes++those++were++physical++and%0D%0Achemical-physical+activation++using++NaOH++with++0%2C25N%3B++0%2C50N%3B++and++0%2C75N+%0D%0Anormality+and+physical+activation+at+temperature+of+150%0D%0Ao%0D%0AC+for+1+hour+and+mass%0D%0Avariation+of+25+grams%2C+50+grams+and+75+grams.+The+activation+was+aimed+to+clean%0D%0Athe+surface+of+the+pores+and+through+compound+impurities+in+fly+ash.+As+the+air%0D%0Ahad+been+filtered%2C+the+fly+ash+would+be+rich+in+oxygen+and+made+the+combustion%0D%0Aprocess++of++a++4-stroke++diesel++engine++better++than++before%2C++resulting++in++increase%0D%0Aperformance+of+engine.+%0D%0AFrom+the+test+results+and+analysis+had+been+known+that+using+chemical-physical+%0D%0Aand+physical+activation+fly+ash+can+increase+the+performance+of+diesel+engine.+The%0D%0Aresults+show+that+the+highest+increase+of+brake+power+in+average+occurred+in+using%0D%0Afly+ash+pellet+of+NaOH-physical+activation+with+normality+0%2C50N+and+75+grams+of+%0D%0Amass+that+is+2.2446%25%2C+followed+with+NaOH-physical+0%2C25N+and+mass+of+75+grams%0D%0Athat+is+1%2C8991+%25.+The+best+reduction+of+specific+fuel+consumption+on+application%0D%0Aof+fly+ash+pellet+were+physical+activation+with+50+grams+of+mass+giving+an+increase%0D%0Aof+4.4404%25.+How+are+then+the+best+reduction+of+specific+fuel+consumption+in%0D%0Aaverage++occurred++in++using++fly++ash++pellet++of++NaOH-physical++activation++with%0D%0Anormality++0%2C75N+giving+an++increase++of+3%2C7425+%25%2C+and+as++big++as+3%2C5893+%25+for+%0D%0ANaOH-physical+activation++with+normality+0%2C50N%2C+while++for+physical++activation%2C+%0D%0Ait+was+of+2%2C9275+%25.%0D%0AKeywords%3A++NaOH-physical++activation%2C++fly++ash++adsorbent%2C++diesel++engine%2C++brake%0D%0Apower.&rft.publisher=Fakultas+Teknik&rft.date=2015-09-09&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F1%2F1.%2520ABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F2%2F2.%2520ABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F3%2F3.%2520COVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F4%2F4.%2520Halaman%2520Persetujuan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F5%2F5.%2520Halaman%2520Pengesahan..pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F6%2F6.%2520Pernyataan.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F7%2F7.%2520RIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F8%2F8.%2520PERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F9%2F9.%2520MOTTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F10%2F10.%2520SANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F11%2F11.%2520DAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F12%2F12.%2520DAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F13%2F13.%2520DAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F14%2F14.%2520DAFTAR%2520NOTASI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F15%2F15.%2520BAB%2520I.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F16%2F16.%2520BAB%2520II.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F17%2F17.%2520BAB%2520III.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F18%2F18.%2520BAB%2520IV.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F19%2F19.%2520BAB%2520V.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F20%2F20.%2520DAFTAR%2520PUSTAKA.pdf&rft.identifier=++SETIA+WASIS%2C+0915021012++(2015)+PERBANDINGAN+PEMANFAATAN+FLY+ASH+BATUBARA+YANG+DIAKTIFASI+SECARA+FISIK+DAN+NaOH-FISIK+DENGAN+VARIASI+NORMALITAS+TERHADAP+PRESTASI+MESIN+MOTOR+DIESEL+4-LANGKAH.++Fakultas+Teknik%2C+Universitas+Lampung.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F14098%2F