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All Journal Mechonversio: Mechanical Engineering Journal ELPOSYS: Jurnal Sistem Kelistrikan
Winarko, Wigo Ardi
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Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH KATALIS TiO2 TERHADAP EMISI GAS BUANG PEMBAKARAN DROPLET MINYAK KELAPA SAWIT Winarko, Wigo Ardi; Aldiansyah, Rio Candra; Laksono, Yuke Hary; Isdhianto, Irfan
Mechonversio: Mechanical Engineering Journal Vol. 6 No. 2 (2023): DESEMBER 2023
Publisher : Univervitas Maarif Hasyim Latif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51804/mmej.v6i2.16436

Abstract

Telah dilakukan penelitian tentang pengaruh variasi katalis TiO2 terhadap emisi gas buang hidrocarbon dan carbon monoksida pembakaran droplet minyak kelapa sawit. Konsentrasi katalis yang diamati pada penelitian ini yaitu 1%, 2% dan 3%. Pengujian droplet dilakukan dengan menempatkan CPO sebanyak 1,25-1,31 ml pada thermocouple. Variabel droplet yang diamati meliputi evolusi api, emisi gas hidrocarbon dan carbon monoksida. Hasil penelitian menunjukkan bahwa penambahan katalis TiO2 pada minyak kelapa sawit memiliki dampak yang kurang baik pada pembakaran yang dihasilkan. Terbukti dimana dengan penambahan katalis TiO2 pada yang semakin besar berakibat pada semakin panjangnya umur nyala api serta terjadi peningkatan emisi gas HC dan CO yang dihasilkan. Ini terjadi karena adanya perbedaan titik didih yang dimiliki oleh CPO dan TiO2. Selain itu penambahan katalis TiO2 juga berdampak pada reaksi pembakaran yang semakin melambat akibat peningkatan viskositas CPO sehingga mengakibatkan pembakaran kurang sempurna serta timbul lebih banyak jelangga yang menyebabkan CO dan HC menjadi meningkat.
Klasifikasi Status Idle dan Kerja Wheel Loader WA350 Berbasis Akselerometer Tunggal Dhendy Zaki Ridwan; Branjangan, Panji Peksi; Winarko, Wigo Ardi
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.8794

Abstract

Conventional hour meters on heavy equipment accumulate engine-ON time without distinguishing productive working from non-productive idle, which can bias preventive maintenance scheduling. This study evaluates the feasibility of separating idle and working conditions of a Komatsu WA350 wheel loader using a single tri-axial accelerometer. Vibration data were recorded at 700, 900, 1100, and 1300 rpm under two scenarios: engine-on with bucket stationary (idle) and engine-on with bucket actuation without load (working). The main indicator is the time-domain Root Mean Square (RMS) on AccX, AccY, and AccZ to represent vibration energy per axis, supported by low-frequency spectral inspection for interpretation. For paired comparison, the analysis focuses on 700–1100 rpm because the 1300 rpm dataset does not include a verified idle counterpart. The results show that AccX provides the most consistent separation, where RMS in working increases by approximately 10–13% compared to idle at 700–1100 rpm, while AccY is less stable and AccZ changes are minimal. These findings support a simple RMS-based logic as a practical basis for smart hour-metering to better reflect operational workload and improve service notification timing. Limitations include controlled test conditions (no-load bucket cycles) and a single mounting location; broader validation under varied loads, terrains, and operators is required.
Co-Authors Aldiansyah, Rio Candra Branjangan, Panji Peksi Dhendy Zaki Ridwan Isdhianto, Irfan Laksono, Yuke Hary