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All Journal Jurnal Mekanik Terapan EPIGRAM (e-journal) Jurnal Polimesin Recent in Engineering Science and Technology
Asep Apriana
Politeknik Negeri Jakarta
Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Journal : recent in engineering science and technology

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Surface Character of Magnetic Ce-doped TiO2 for Photocatalytic Performance Enhancement Tia Rahmiati; Ching-Cheng Chen; Siti Asmahani Saad; Nugroho Eko; Asep Apriana
Recent in Engineering Science and Technology Vol. 1 No. 1 (2023): RiESTech Vol. 1 No. 1 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i01.2

Abstract

Using a modified sol-gel method for magnetic photocatalyst, the core shell structure of Ce-doped TiO2@SiO2@ferrite composite nanoparticles (NPs) was created. X-ray diffraction (XRD), Brunauer–Emmit–Teller (BET), and a superconducting quantum interference device (SQUID) were used to examine the physicochemical properties of the products as they were prepared. The ultraviolet-visible spectrometry (UV-vis) was used to measure the catalyst's photocatalytic activity. On the composite NPs' outer shell coating, the anatase phase related to the TiO2 structure was constructed. On the Ce-doped TiO2 layers, a mesoporous structure with uniform pore size was created, resulting in a specific surface area of 111.916 m2g-1. In the meantime, the thin TiO2 coating contained the redox couple of Ce3+ and Ce4+. An external magnetic field can also be used to separate the catalyst's magnetic NPs from the reaction system. In the aqueous solution of methylene blue (MB), the degradation efficiency and product performance were both 50 percentage
Dynamometer Testing of Electric Vehicles: Methods, Standards, and Emerging Trends Rahmat Noval; Asep Apriana; Danardono Agus Sumarson; Ghany Heryana; Fuad Zainuri; Mohammad Adhitya; Muhammad Hidayat Tullah; Fuzi Rachmat Ramdhan
Recent in Engineering Science and Technology Vol. 4 No. 3 (2026): RiESTech Vol. 4 No. 3 Years 2026
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v4i3.133

Abstract

Dynamometer testing (dynotest) is essential for evaluating electric vehicle (EV) performance under controlled laboratory conditions, enabling repeatable measurement of power, torque, efficiency, and energy consumption while emulating real-world driving cycles. This review surveys recent developments in EV dynotesting, highlighting IEEE and international test standards, key performance parameters, and evolving methodologies. We compare chassis and hub dyno architectures, including new “vehicle-in-the-loop” and modular test benches, and discuss integration of hardware-in-the-loop (HIL) simulation for real-time controller validation. Standardized drive cycles (e.g. WLTP, EPA/UDDS, JC08) are widely used on dynos to benchmark EV energy use. We summarize representative studies that apply dynotests to EV powertrains, including single-motor and dual-/multi-motor drivetrains. Emerging challenges are reviewed: bidirectional (regen) energy flow, thermal management under high load, synchronization of multiple drive units and batteries, and specialized needs for all-wheel-drive (AWD) and multi-motor EV testing. The review concludes that comprehensive dynotest methods, combined with rigorous standards, HIL integration, and advanced data analysis, are critical for validating next-generation EV drivetrains and enabling accurate energy-consumption benchmarking. Future work should address remaining gaps in multi-axis dyno platforms, long-term durability tests, and AI-driven real-time analysis during dyno runs.
Co-Authors Ahmad Indra Siswantara Bayu Prasetio Candra Damis Widiawati Ching-Cheng Chen Danardono Agus Sumarson Dela siska Fuad Zainuri fuzi rachmat ramdhan Ghany Heryana Gunadi, Gun Gun Ramdlan Irfan Hermansyah Saputra Kamal, Dianta Mustofa Minto Rahayu Mohammad Adhitya, Mohammad Muhammad Hidayat Tullah Nugroho Eko Rahmat Noval Rita Farida Siti Asmahani Saad Tatun Hayatun Nufus Tia Rahmiati