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INDONESIA
Jurnal Nosel
Published by Universitas Sebelas Maret
ISSN : -     EISSN : -     DOI : -
Core Subject : Education, Engineering,
Education Mechanical Engineering
Arjuna Subject : -
Articles 214 Documents
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PENGARUH IGNITION TIMING DAN TEGANGAN INPUT PADA ELEKTROLISER TERHADAP KONSUMSI BAHAN BAKAR PADA SEPEDA MOTOR HONDA SUPRA X 125 TAHUN 2007 Puji Utama, Angga Setiawan
Jurnal Nosel Vol 3, No 3 (2015): January
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Abstract

The aims of this research are: (1) to investigate the ignition timing effect to the fuel consumption of 2007 Supra-X 125 motorcycle, (2) to investigate the input voltage of electrolyzer effect to the fuel consumption of 2007 Supra-X 125 motorcycle, (3) to investigate the interaction between ignition timing and input voltage of electrolyzer to the fuel consumption of 2007 Supra-X 125 motorcycle. This research used experimental method. The sample of this research was 2007 Honda Supra-X 125 with engine number JB81E1108989. Fuel consumption were measured using 8 Km road test on Prambanan-Piyungan street, Yoygyakarta, according to SNI 7554-2010. The data were collected from the motorcycle?s fuel consumption which is designed in variations of input voltage electrolyzer (0 volt, 4 volt, 8 volt, and 12 volt) using standard ignition timing (15O BTDC), early ignition timing (18O BTDC), and late ignition timing (12O BTDC). Two way analysis of variance was used to analyze the data. The result of this research has shown that (1) there were significant effect between the variation of ignition timing to the fuel consumption of 2007 Supra-X 125 motorcycle, (2) there were significant effect between the variation of input voltage electrolyzer to the fuel consumption of 2007 Supra-X 125 motorcycle, (3) there were significant interaction between ignition timing variation and input voltage of electrolyzer variation to the fuel consumption of 2007 Supra-X 125 motorcycle. The lowest fuel consumption was produced at 18 O BTDC ignition timing with 12 Volt input voltage electrolyzer was 13.98 cc/Km.
STUDI KUALITAS WELDING REPAIR DENGAN METODE PENGELASAN TIG DENGAN PERLAKUAN PWHT PADA CAST WHEEL ALUMINIUM Munfiroh, Alfin
Jurnal Nosel Vol 2, No 4 (2014): April
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Abstract

This research aims to know i.e.(1) Determine the effect of the composition and microstructure of the weld area with a result of repair welding using TIG welding method with PWHT treatment on the aluminium cast wheel. (2)Determine the value of hardness and impact strength on the results of the repair welding using method of TIG welding with PWHT treatment on the aluminium cast wheel.     This research applied descriptive quantitative method with the source of data that consists of the results of the composition test, micro structure, impact test and test of Brinnel aluminium cast wheel.The data analysis technique used in this research was descriptive technique. This study observed the results of experiment directly then analyzed it and then the experimental results concluded. Result of this research shows that chemical composition of aluminium cast wheel changed after TIG welding process with PWHT treatment done. Al content of the original elements have increased 94.93% to 97.60% after the TIG welding process with PWHT treatment done as well as the elements of Si, namely changes in raw materials has decreased by 4.61% to 1.21%. The highest hardness value in raw material that are 42.69 BHN while in the weld part decreased to 28.28 BHN, the lowest hardness value in base material are 21,39 BHN. The highest value of impact strength are 0,14 joule/mm2on the weld part while on the raw material, the lowest value are  0.09 joule/mm2. The conclusion that was obtained from this study was PWHT process decreased hardness value. The hardness value of TIG specimen was lower than raw material specimens hardness number.
PENGARUH PERUBAHAN WAKTU PENGAPIAN (IGNITION TIMING) TERHADAP EMISI GAS BUANG CO DAN HCPADA SEPEDA MOTOR VEGA R 110 CC TAHUN 2008 DENGAN BAHAN BAKAR LPG (LIQUEFIED PETROLEUM GAS) Rastoto, Nur Dyan Enggar
Jurnal Nosel Vol 2, No 2 (2013): October
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Abstract

The purpose of this research are: (1) To know the effect of modified ignition timing toexhaust emissions CO and HC on motorcycles Yamaha Vega R 110 CC in 2008 that use LPGfuel. (2) To know amount the effect of modified ignition timing to exhaust emissions CO andHC on motorcycles Yamaha Vega R 110 CC in 2008 that use LPG fuel by ignition timing 7?,10?, 13? BTDC.Based on this research can be conclude: (1) Modified ignition timing on the use of LPGfuel effect on the result of exhaust gas emissions levels of CO and HC. (2) The results gas emissionslevels  of  CO  0.041%  by  ignition  timing  7? BTDC,  the  results gas  emissions  levels  of  CO0.052% by ignition timing 10? BTDC, while the result gas emissions levels of CO 0.098% by13? BTDC. (3) Gas emissions levels of HC 130 ppm by ignition timing 7? BTDC, gas emissionslevels  of  HC  272.67  ppm  by  ignition  timing  10? BTDC,  while  gas  emissions  levels  of  HC473.33  ppm  by  ignition  timing13? BTDC.  (4)  The  ignition  timing  13? BTDC  increase  theresults  exhaust  gas  emissions  levels  of  CO  and  HC,  while  ignition  timing  7? BTDC  willdecrease the result exhaust gas emissions of CO and HC but also decrease engine power.
STUDI RELEVANSI SKKNI PROFESI MEKANIK OTOMOTIF RODA 2 DI BENGKEL OTOMOTIF DI SURAKARTA Raharjo, Krisnawan Suko
Jurnal Nosel Vol 3, No 1 (2014): July
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Abstract

The purpose of this study was to determine the mechanics profiles and competencies needed by the vehicle to mechanics in the workshop 2-wheel vehicle automotive in Surakarta. This research was a qualitative measure. The experiment was conducted with a qualitative approach consisting of planning, action, observation, and reflection. Subjects were head and a mechanical workshop of 3 formal workshop (workshop authorized Honda, Yamaha, and Suzuki) and 1 public workshop in Surakarta, amounting to 4 head of mechanics and 8 mechanics. The data collection technique was the observation, interviews, questionnaires and documentation or archival. The validity of the data using method triangulation techniques. Data analysis using descriptive statistical analysis techniques comparative and critical analysis. The results showed that : (1) 2-wheel vehicle automotive mechanics profile in Surakarta has at least approximately 3 kinds of competencies, namely : general competence, professional competence/engineering, and additional competence that were not in IQFS automotive mechanic. (2) Appropriatelevel between General competence with industrial need of automotive services : Procedures followed Occupational Health, Safety and Environment (83.3%; very high), read and understand Engineering Drawing (61.1%; quite high), manual handling of operations (69.4%; high), use and Maintainance Equipment and Equipment in the Workplace (80.5%; very high), use and Maintainance Measuring Instrument (86.1%; very high), Maintainance operations components and Repair (83.3%; very high) and Maintainance Hydraulic Systems (80.5%; very high). (3) Appropriatelevel between Professional competence/engineering with industrial need of automotive services : Engine Maintainance its components (91.6%; very high), remove the head, assessing the components, and assemble the cylinder head (83.3%; very high), Maintainance the following cooling system components (83.3%; very high), Maintainance Fuel System (75%; high), Maintainance automated and manual clutch unit (83.3%; very high), Maintainance Brake System (63.8%; quite high), assemble and install the following Brake System components (75%; high), Maintainance Suspension Systems (91.6%; very high), Maintainance the chain / chain (91.6%; very high), testing, Maintainance, and Changing Battery (83.3%; very high), perform the series of Lightweight Repaired / Electrical System (91.6%; very high), and Repaired Ignition system (91.6%; very high).

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