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ITS » Undergraduate Theses » Disain Sistem Mekanikal
Posted by hassane@its.ac.id at 26/05/2010 14:18:35  •  3109 Views


RANCANG BANGUN ELEKTRONIK KONTROL SISTEM ELEKTROLISER BROWN GAS PADA KENDARAAN

DESIGN AND MANUFACTURING ELECTRONICS CONTROL BROWN GAS ELECTROLYZER SYSTEM FOR VEHICLE

Author :
Rasiawan ( 2107205004 )




ABSTRAK

Telah diterapkan pencampuran brown gas yang dihasilkan dari elektrolisis air dengan campuran bahan bakar-udara pada kendaraan yang ternyata dapat meningkatkan effisiensi penggunaan bahan bakar 30 50 Puempida dkk. 2008. Gas yang dihasilkan juga mengandung uap air yang dapat mendinginkan mesin dan menurunkan emisi NOx. Brown gas yang dihasilkan dari proses elektrolisis air dengan katalis KOH diuji dengan variasi tegangan temperatur luas elektroda dan konsentrasi katalis. Dilakukan pengujian pada kendaraan dengan parameter elektrolisis yang mendekati nilai optimum yaitu tegangan 3 Volt luas elektroda 02 Acm2 konsentrasi elektrolit 20-40 dan jumlah sel elektrolisis 4 buah dengan kontrol elektronik untuk pengaturan arus berdasarkan putaran mesin. Hasil pengujian menunjukkan bahwa kenaikan tegangan menyebabkan kenaikan uap air dan menurunkan efisiensi elektrolisis. Penurunan tegangan elektrolisis menyebabkan kandungan air yang ikut mengalir bukan karena menguap setiap volume gasnya menjadi semakin besar. Hidrogen yang dihasilkan nilainya sangat kecil untuk dapat meningkatkan kerja mesin yaitu hanya 59 mldet atau 0527 mgdet meskipun pada pemakaian listrik yang cukup besar yaitu 72 Watt. Peran gas H2 dan O2 adalah membawa molekul air dengan tingkat homogenitas tinggi untuk memperbaiki fluida kerja dari mesin sehingga nilai AFR Air fuel Ratio digeser kearah best power 125 1 tanpa penambahan bahan bakar ekstra sebagai fluida kerja dan pendingin mesin. Kondisi tersebut juga dapat menurunkan emisi NOx karena suhu mesin menjadi lebih rendah CO dan HC turun karena ada tambahan suplai O2 baik dari produksi brown gas maupun dari berkurangnya reaksi O2 dan N2 membentuk NOx. Pada penelitian ini didapatkan penurunan NOx sebesar 1311 penurunan emisi CO dan HC 52. Alat yang dirancang mampu menghindari resiko adanya air yang terlalu banyak pada ruang bakar terutama pada putaran mesin rendah.


ABSTRACT

The results of water electrolysis from brown gas system have been applied for car and improve fuel efficiency. Water was also included in the gas product which it decreased temperature and NOx Emission. Unfortunately gas flow rate was constant at all engine speed which may be disturbed burning process at low speed because water became too much in the block cylinder. This experiment measured electrolysis process with changed the variables of voltage temperature electrode surface width and KOH catalysis concentration. Measurement at electrolysis system was resulted a lot of parameters which near optimum value with voltage varied from 1.3 to 3 volt for 1 sell electrode current density under 0.2 Acm2 and electrolyte concentration varied from 20 to 40. Electronics controller of electrolysis has been made with them based on engine speed with power consumption varied from 0 to 93.6 Watt through PWM control duty cycle at 12 Volt Voltage power supply. Gas product capacity obtained from 0 to 6.5 mls and water included from 0 to 26.7 mgs. The controller was able to adjusted turn current at specific speed engine so it will not be disturbed engine specify at low speed or idle speed. The brown gas system obtained 16 from control target on the best power condition but was able to reduce over capacity of water in cylinder block at low speed. The controller also was completed gas capacity or power consumption adjustment so it will be daptable with engine type or battery condition. The experiment result showed H2 and O2 gas production had ability to brought water molecules so it made AFR Air Fuel Ratio became rich or best power condition with AFR 12.5 1. This condition can reduce NOx emission because engines temperature was lower. CO and HC emission reduced because supply O2 from brown gas and NOx production was broken. This Experiment resulted 13.11 NOx emission reduction also 5.2 CO and HC emission reduction.



Keywordskontrol elektronik; brown gas; AFR; emisi gas buang
 
Subject:  Kontrol elektronik
Contributor
  1. Prof. Ir. I Nyoman Sutantra, M.Sc., Ph.D
  2. Dr. Bambang Sampurno, MT.
Date Create: 04/02/2010
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-3100010039471
Collection ID: 3100010039471
Call Number: RTM 629.89 Ras r


Source
Master Theses, Mechanical Engineering, RTM 629.89 Ras r, 2010

Coverage
ITS Community

Rights
Copyright @2010 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




[ Download - Open Access ]

  1.  ITS-Undergraduate-10380-Abstract_id.pdf - 90 KB
  2.  ITS-Undergraduate-10380-Abstract_en.pdf - 76 KB
  3.  ITS-Undergraduate-10380-Conclusion.pdf - 68 KB
  4.  ITS-Undergraduate-10380-Paper.pdf - 224 KB




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