ANALISIS KEANDALAN INTEGRATED ELECTRIC HYDRAULIC PUMP PADA MEDIUM EV BUS MENGGUNAKAN METODE RELIABILITY BLOCK DIAGRAM DAN FAULT TREE ANALYSIS

*Muhamad Aldyan Krisna Oktavia  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Gunawan Dwi Haryadi  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Yusuf Umardani  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia

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Abstract

Penelitian ini bertujuan menganalisis keandalan sistem Integrated Electric Hydraulic Pump (IEHP) pada Medium Electric Vehicle (EV) Bus menggunakan metode Reliability Block Diagram (RBD), Fault Tree Analysis (FTA), dan Risk Based Inspection (RBI). Metode RBD digunakan untuk memodelkan hubungan antar komponen, sedangkan FTA untuk mengidentifikasi penyebab kegagalan sistem. Hasil analisis menunjukkan bahwa motor listrik, pompa hidrolik, dan sistem hidrolik memiliki nilai Probability of Failure (PoF) tertinggi sebesar 40,5% sehingga menjadi prioritas utama inspeksi. Reservoir dan sistem pendinginan fluida memiliki PoF 33,3%, sedangkan inverter/motor drive dan sistem kontrol elektronik memiliki PoF 25,1%. Hasil ini digunakan sebagai dasar penerapan RBI untuk menentukan prioritas inspeksi dan meningkatkan keandalan sistem IEHP pada Medium EV Bus.

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Keywords: electric vehicle bus; fault tree analysis; integrated electric hydraulic pump; reliability block diagram; risk based inspection
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