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All Journal e-Dinamis Syntax Literate: Jurnal Ilmiah Indonesia
Robertus simanungkalit
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PERFORMANSI MESIN SEPEDA MOTOR SATU SILINDER BERBAHAN BAKAR PREMIUM DAN PERTAMAX PLUS DENGAN MODIFIKASI RASIO KOMPRESI Robertus simanungkalit; Tulus B.Sitorus
e-Dinamis Vol 5, No 1 (2013): e-dinamis
Publisher : e-Dinamis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.12 KB)

Abstract

ABSTRAKPengujian secara langsung adalah cara paling efektif untuk mengetahui performa sebuah mesin,dalam hal ini mesin otto empat langkah berkapasitas 109,1 cc diuji menggunakan hidrolikdinamometer. Pada penelitian ini digunakan bahan bakar premium dan pertamax plus. Rasiokompresi mesin dimodifikasi menjadi 11:1 agar mendapat data perbandingan sebelum dansetelah modifikasi rasio kompresi. Effisiensi terbaik dari mesin diperoleh pada saat sebelummodifikasi rasio kompresi pada kecepatan 30 km/jam beban 60 kg menggunakan bahan bakarpremium dimana konsumsi bahan bakar spesifik 224,28 gr/kWh dan effisiensi termalnyamencapai 37,27%.Kata kunci : Performansi, Mesin Otto, Modifikasi Rasio Kompresi,Premium dan Pertamax Plus
Performance Analysis of the Parit Baru Bengkayang Coal Fired Power Plant Project (2 X 50 Mw) in Terms of Cost and Schedule Using the Earned Value Method Simanungkalit, Robertus; Adi, Tri Wahyu
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i12.62734

Abstract

This study aims to evaluate the performance of the construction project of the Parit Baru Site Bengkayang Steam Power Plant (2 x 50 MW) in terms of cost and time using the Earned Value Management (EVM) method. Common issues in large-scale construction projects include delays and cost overruns, which negatively affect the efficiency and effectiveness of project implementation. EVM is an analytical method that integrates the measurement of time and cost performance, allowing the assessment of deviations from the initial project plan.This research uses actual project cost and schedule data obtained from monthly PLTU progress reports. Analysis was conducted on key variables such as Planned Value (PV), Earned Value (EV), and Actual Cost (AC). By calculating performance indicators such as the Cost Performance Index (CPI) and Schedule Performance Index (SPI), it was revealed that the project experienced deviations in both schedule and cost. The results of the analysis show that EVM provides comprehensive information on project performance and is highly beneficial as a control tool for future projects. This study also provides recommendations to improve the effectiveness of planning and control in similar electricity infrastructure projects.
Co-Authors Adi, Tri Wahyu Tulus B.Sitorus