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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Journal of Vocational Studies on Applied Research
Ireng Sigit Atmanto
Program Studi Diploma TeknikMesinUniversitasDiponegoro Semarang Jl.Prof. H. Sudarto, SH - Tembalang, Semarang
Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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UJI PERFORMA MESIN MENGGUNAKAN BAHAN BAKAR PERTAMAX DAN PERTAMAX TURBO PADA MESIN 4 LANGKAH CAHYA NEGARA, ABDI MUHAMMAD; Atmanto, Ireng Sigit; Mrihardjono, Juli
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7096

Abstract

Performance and vehicle exhaust emissions are determined by many factors that come from various components and take place in a related manner. This test uses 4 types of motorcycles with different cylinder volumes. The test was conducted using a dynamometer test equipment. How to test on a dynamometer using fuel pertamax and Pertamax turbo. Data were taken on transmission gears 1, 2, 3 and 4 at speeds of 20 km, 40 km and 60 km. For emission testing follows the procedure of taking power and torque data and performed simultaneously.The content of emissions in the exhaust gas is CO, CO2, HC and O2 based on the results of the use of exhaust emissions test equipment.The relationship between vehicle speed and gear position to power, torque and exhaust emissions on 2 different fuels is the higher the transmission gear position and speed, the result is high, namely on pertamax fuel (power, torque, CO gas emissions) and pertamax turbo (Power, Torque, CO gas emissions, CO2 gas), the lower the transmission gear position and speed, the result is high, namely on pertamax fuel (CO2) and the lower the transmission gear position and speed, the result is high, namely HC on pertamax fuel and pertamax turbo.The test results of statistical tests t-test 2 samples obtained the results of the fuel test pertamax = Pertamax turbo fuel test on 4 vehicles with different cylinder volumes. Exceptions exist in 160 cylinder volume vehicles in the HC test and 125 cylinder volume vehicles in the CO2 test.
Reliability Analysis of Diesel Engine at LNG Plant using Counting Process Darmanto, Seno; Atmanto, Ireng Sigit; Permana, Bagus Hendra
Journal of Vocational Studies on Applied Research Volume 1, Issue 2, Year 2019 (October 2019)
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.798 KB) | DOI: 10.14710/jvsar.v1i2.4368

Abstract

The purpose of this research is to analyze the reliability of diesel engine as driver for fire water pump. To determine the reliability level of the diesel engine, this research will apply counting process so that the rate of failure of the diesel engine can be known. The data used as basis for calculation is failure data gained from maintenance work order databases from 2012 to 2017. The data obtained will be processed using counting process method to produce mathematical modeling to predict the amount of failure to diesel engines in the future. From 4 diesel engines, only 3 parametric failure rate (l) that could be generated, for 33-GE-5A, for 33-GE-5B, and  for 33-GE-5C, since 33-GE-5D was severely damaged in September 2015. The mathematical modeling will be verified using the Pearson's Chi-squared Test method to ensure the validity of the mathematical model can be guaranteed. The result of the goodness of fit test shows that only parametric failure rate (l) for 33-GE-5B and 33-GE-5C that could be accepted. The outcome mathematical model will be used to predict future behavior and failure of the unit so effective and efficient maintenance strategy for 33-GE-5B and 33-GE-5C could be applied
Co-Authors CAHYA NEGARA, ABDI MUHAMMAD Juli Mrihardjono Permana, Bagus Hendra Seno Darmanto