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Herry Wardono
Lampung University
Mechanical Engineering

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PENGARUH TEMPERATUR DAN WAKTU PEMANASAN ZEOLIT PELET TEKAN PADA AKTIVASI BASA-FISIK NaOH DAN KOH TERHADAP PRESTASI MOTOR DIESEL 4-LANGKAH Novian Korin A; Herry Wardono
Jurnal Ilmiah Teknik Mesin Vol 1, No 1 (2013)
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Natural Zeolite is one of alternative adsorbents. Zeolite should be firstly activated to get zeolite with high adsorption capacity. The ability of chemical-physical activated zeolite in saving fuel consumption of a diesel engine proven by Herry Wardono using NaOH and KOH with normality of 0,75N. The mass of pressed pelletized zeolite used was 100 grams and with thermal activation at 200°C for 2 hour. In this research, zeolites were activated by using thermal activation at 150°C for 1 hour and 2 hours, and 200°C for 1 hour, these pellets were packed in a frame of 50 grams, 100 grams and 150 grams, and put them in the air filter of a diesel engine for each mass, so combustion air was firstly contacted with zeolites before entering to combustion chamber. The experiments were operated at engine speeds of 1500, 2000, 2500, 3000 rpm. The results showed that used of these thermal-Alkali activated zeolites could in increas the diesel engine performance. Use of 150 grams of KOH 0,75N activated zeolite that was thermally treated at 150oC for 2 hours could reduce the highest fuel consumption that was 0,0225 kg/kWh (11,211%), and as big as 0,0218 kg/kWh (10,87%) for use of 150 grams of NaOH 0,75N activated zeolite that was thermally treated at same condition. Meanwhile, the highest increase of brake power occurred for use of 100 grams of NaOH 0.75N activated zeolite that was 0,054 kW (7,667%), and as big as 0,0477 kW (6,849%) for use of 100 grams of KOH 0.75N activated zeolite. The results occurred at the engine speed of 1500 rpm.Keywords: thermal activation of Zeolite, Combustion air Treatment, Diesel Engine Performance
PENGARUH VARIASI JENIS AIR DAN KONDISI AKTIVASI DARI ADSORBEN FLY ASH BATU BARA TERHADAP PRESTASI MESIN DAN KANDUNGAN EMISI GAS BUANG SEPEDA MOTOR KARBURATOR 4-LANGKAH Denfi Efendri; Herry Wardono
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
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The activated fly ash of coal as adsorbent pellets can be used to save fuel consumption. This research is done with some testing that is the runs test (road test and acceleration), stationary and emission testing. Fly Ash pellets packed in a frame and put on the air filter absolute revo 110 cc motorcycle. So before the air filter into the vehicle, it wil be contact with the pellets Fly Ash first. In this study, the most efficient types of water used is H12 Z20  and the best conditions was on the temperature 150o C and activation time of 1 hour with fuel savings in road test reached 12.69%, and fuel economy at a stationary test up to 22.65% and the reduction of travel time ( 0-80 km/h ) of 6.86%. Fly Ash pellets are able to reduce the levels of CO by 76,92 %, 19,57 % for HC levels and raise their levels of CO  by 4,36 %.Keywords : Fly ash adsorbent pellets, engine performance, exhaust gas emissions
Pengaruh Penggunaan Tabung Induksi Terhadap Konsumsi Bahan Bakar Sepeda Motor Bensin 4 Langkah Junaidi Supratman; Herry Wardono; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 1, No 3 (2013)
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YEIS tube (Yamaha Energy Induction System) has been able to enhance the performance of the motorcycle. Therefore, the use of induction tube on a 4-stroke motorcycle is expected to be able to increase the volumetric efficiency of the suction stroke, so that the power (acceleration) of the engine can increase at low speed. Tests of using induction tubein a 4-stroke motorcycle is required to observe the effect of the induction tube position on its performance and emission.the engine performance tests were carried out in road tests at an average speed of 40 kph. It was conducted before and after using the induction tube, and the induction tube mountings on intake manifold were varied at positions of JS150 (15 mm from intake manifold), JS 375 (37,5 mm), and JS600 (600 mm). Each type of test was performed 3 times to get it’s average.From the results, it was found that the fuel consumption of the motorcycle could maximally reduce by 27.8% in mounting JS150 and the lowest engine consumption by 0.98% in mounting the intake manifold JS 600. The best result occurred in mounting of JS150 for all tests. JS150 is the optimal position. This due to JS150 is the closest position from intake manifold and the most farthest position from carburettor. Therefore, at mounting of JS150,  residual air and fuel mixture can be fully drawn into both the line and tube of the induction tube. In contrast,JS600 is the farthest position from intake manifold, so that the residual air and fuel mixture cannot fully be drawn into the line and tube of the induction tube, the mixture is partially drawn into carburettor and induction tube, as in branched pipe system.Keywords : induction tube, petrol engine performance, YEIS.
PENGARUH VARIASI JENIS AIR DAN TEMPERATUR AKTIVASI DALAM CAMPURAN FLY ASH BENTUK PELET TERHADAP PRESTASI MESIN DAN EMISI GAS BUANG SEPEDA MOTOR BENSIN 4 LANGKAH Bagus Rachmad Akbar; Herry Wardono; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
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Meningkatnya jumlah kendaraan bermotor yang masih menggunakan bahan bakar fosil sebagai bahan bakar utama, menyebabkan cadangan bahan bakar fosil semakin menipis. Dengan kondisi seperti ini pemerintah telah mengurangi subsidi bahan bakar dan berencana menerapkan pembatasan pemakaian bahan bakar pada kendaraan bermotor. Fly ash batu bara dapat dimanfaatkan untuk menagtasi hal di atas. Pengujian fly ash ini dilakukan dengan beberapa variasi yaitu pengujian konsumsi bahan bakar, akselerasi, dan emisi gas buang. Konsumsi bahan bakar dilakukan dengan road test (pada kecepatan rata-rata 50 km/jam menempuh jarak 5 km) dan stasioner (pada putaran mesin 8500). Pengujian akselerasi dilakukan pada0-120 km/jam, serta pengujian emisi gas buang pada putaran 1500 dan 8500 rpm. Pelet fly ash yang dibentuk menjadi pelet berdiameter 10 mm dan tebal 3 mm dengan beragam variasi air(air mineral, aquadesh, dan air sumur bor), juga variasi temperatur dan waktu aktivasi fisik (2000 C, 1500 C selama 1 jam dan 2000 C, 1500 C  selama 2 jam).Pelet fly ashtersebut dikemas dalam suatu frame dan diletakkan di dalam saringan udara kendaraan uji sepeda motor yamaha vixion 150 cc. Sehingga sebelum udara masuk ke dalam ruang pembakaran, udara terlebih dahulu terhambat dengan pellet fly ash.Dalam penelitian ini, terbukti pelet fly ash mampu menghemat konsumsi bahan bakar hingga 28,8% pada  road test, dan sebesar 25,5% pada pengujian stasioner. Akselerasi meningkat sebesar 7,3%.Disamping itu, filter pelet fly ashbatubara mampu mengurangi kadar CO hingga sebesar 26,7% pada putaran 1500 rpm dan 45,5% pada putaran 8500 rpm, mengurangi kadar HC hingga sebesar 34,8% pada putaran 1500 rpm dan 30,4% pada putaran 8500 rpm. Kata kunci : Prestasi motor bensin 4 langkah, fly ash batubara, adsorben pelet fly ash.
PENGARUH VARIASI NORMALITAS NaOH PADA AKTIVASI BASAFISIK ZEOLIT PELET PEREKAT TERHADAP PRESTASI SEPEDA MOTOR BENSIN 4-LANGKAH Ari Andrew Pane; Herry Wardono; A.Yudi Eka Risano
Jurnal Ilmiah Teknik Mesin Vol 2, No 2 (2014): Jurnal FEMA Vol.2 No.2 Tanggal 10 April 2014
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Natural zeolite is an alternative adsorbent. It needs firstly to  be activated before using it as absorbent in order to get zeolite with high adsorption capacity. Previously, the use of pelletized zeolite activated by NaOH-physic and KOH-physic with varied normalities was only performed in a diesel engine to observe the engine performance.In this study there were two kinds of activation, that is  chemical activation with NaOH activator variation on the normality of 0.25 N, 0.5 N, 0.75 N, and 1.0 N and physical activation with using  a temperature of 220 °C for 2 hours. All are made in the form of adhesive zeolite pellets with a diameter of 10 mm and a thickness of 3 mm.From the test results and analysis showed that the use of chemically activated zeolite can improve the performance of 4-stroke petrol engine when compared without using  zeolite. The best performance in this experiment obtained at the normality of 0,75 N. At road test, the pelletized zeolite can reduce the fuel consumption 23, 15 %, and 16,51 % at stationary test, and increase acceleration by 14,77 %. Keywords: zeolite adsorbent, variation of normality, activator of NaOH
Pengaruh Variasi Temperatur dan Derajat Keasaman (pH) Air Pencucian Pada Aktivasi Zeolit Pelet Terhadap Prestasi Mesin Diesel 4-Langkah Chandra Winata Pandapotan; Herry Wardono
Jurnal Ilmiah Teknik Mesin Vol 1, No 2 (2013): Jurnal FEMA Vo.1 No.2 Tanggal 10 April 2013
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One of efforts to save fuel consumption can be done by using thermal-acid activated zeolite as adsorbent for water vapor and nitrogen. Herry Wardono has proved that the value of concentration of 0.3 N and 0.5 N in the chemical activation can save specific fuel consumption. The best result occurred in the use of thermal-chemical activated zeolite. In this research, thermal activation temperatures used were 150 0C and 200 0C respectively for 1 hour. Variations of washing water pH were also performed on the 4.5, 5.5 and 7. The results showed this thermal activation of 200 0C on activator HSO24 0.3 N and HCl 0.3 N can save fuel by 5.350% and 7.811% respectively. Then the pH value of 7 gave the best fuel consumption savings those were of 5.964 % and 7.175% for use of HSO 0.5N24 and HCl 0.5N. This result occured at low speed (1500 rpm).Keywords : adhesive pelletize zeolite, thermal activation, effect of washing water pH
PENGARUH VARIASI JENIS AIR DAN KONDISI AKTIVASI DARI ADSORBEN ARANG SEKAM TERHADAP PRESTASI MESIN DAN KANDUNGAN EMISI GAS BUANG SEPEDA MOTOR KARBURATOR 4-LANGKAH Dian Eka Pratama; Herry Wardono
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
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The fuel crisis is one of the problems that faced by the world and Indonesia today. To reduce the vehicle fuel consumption, it can be done by using charcoal from rice husk pellet. This research is done with some testing that is the runs test (road test and acceleration),stationary and emission testing. Charcoal pellets are packed in a frame and placed in the air filter on the absolute revo 110 cc motorcycle.In this study, the efficient use of water in the mixture of pellet making charcoal is the best zeolite water immersion results (H12Z20),the best activation conditions at a temperature of 150 C and the activation time of 2 hours. The charcoal pellets can save fuel by 15.72% on road test, and making the accelerate for 7.02% and save fuel consumption until 18.55% on a stationary test. Rice husk pellets are also proven to reduce vehicle exhaust emissions. it can reduce levels of CO and HC by 85,71% at 37,45%  as well as increasing levels of CO  by 6,70%.Keywords : performance, rice hulk charcoal pellets, charcoal adsorbent pellets, exhaust emissions.
PENGARUH VARIASI MASSA DAN TEMPERATUR AKTIVASI FLY ASH PELET DARI CANGKANG DAN SERABUT KELAPA SAWIT TERHADAP KONSUMSI BAHAN BAKAR SEPEDA MOTOR BENSIN 4 LANGKAH Hadi Prayitno; Herry Wardono
Jurnal Ilmiah Teknik Mesin Vol 2, No 2 (2014): Jurnal FEMA Vol.2 No.2 Tanggal 10 April 2014
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Energy determines the development and sustainability of economic system, social change and political growth in a country. Because of that, the energy crisis is the crisis of growth and sustainability of life system. Auto-vehicle is a certain transportation mode which an engine requiring fuel. To decrease the fuel consumption, we can use the natural resource like fly ash of shell and fiber of palm. The objective of this research is to observe the effect of the variation of mass and activation temperature in producing pelletized fly ash on performance and emission of a four-stroke petrol motorcycle. This research was done by implementing several variations of test, those were test of fuel comsumption at speed of  50km/hour for 5 km and stationer at 1500, 3500, and 5000 rpm. The fly ash used in this research was 10 mm in diameter and 3 mm in thicknes. Those fly ash were wrapped in a frame and put in an air filter of New Jupiter Z 110 cc. So the combustion air fistly contacted with the fly ash before entering into the combustion chamber. From the results, the best fly ash mass used P•—nƒì ?‡ and the best temperature activation is 175 oC. Those fly ash can save the fuel consumption by 17.23 % (road test) and 20.06% (stasioner test).  Keywords : fly ash adsorbent, combustion air treatment, emission
Co-Authors A.Yudi Eka Risano Ari Andrew Pane Bagus Rachmad Akbar Chandra Winata Pandapotan Denfi Efendri Dian Eka Pratama Hadi Prayitno Junaidi Supratman M. Dyan Susila Novian Korin A