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All Journal Jurnal Ilmu Manajemen Terapan (JIMT) Automotive Experiences
Melia Eka Lestiani
Universitas Logistik dan Bisnis Internasional, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mechanical Engineering

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Calibration of HDM-4 Model for Fuel Consumption in Heavy-Duty Trucks: Integration of Telematics, Engine Speed, and Aerodynamics Pradhana Wahyu Nariendra; Melia Eka Lestiani
Automotive Experiences Vol. 8 No. 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.12862

Abstract

Fuel efficiency in heavy-duty trucks in Indonesia faces significant challenges, while the current HDM-4 fuel consumption model has limitations in reflecting local conditions. This study calibrates the HDM-4 model using telematics data, engine speed modeling, aerodynamic simulations, and calibration factors. The novelty lies in updating parameters such as engine speed, vehicle frontal area, and calibration factors for engine power efficiency (Kpea) and rolling resistance (Kcr2) to account for tire-road interaction in Indonesian conditions. Data were collected from 5-axle trucks on the Tanjung Priok”“Bandung toll road, analyzed using regression, Computational Fluid Dynamics (CFD) simulations, and non-parametric paired tests. Results show updated engine speed parameters (RPM_a0 = 680.11, RPM_a1 = -4.9031, RPM_a2 = 0.3858, RPM_a3 = -0.0028), a drag coefficient of 1.0556, and a frontal area of 8.2 m². Calibrating Kpea and Kcr2 (both 0.6) improved prediction accuracy, with no significant difference between predicted and observed data (p = 0.186). The enhanced HDM-4 model supports operational decisions, infrastructure planning, and sustainable transport policies, improving energy efficiency, reducing emissions, and boosting national logistics competitiveness.
Pengaruh Internal Integration, External Integration, dan Information Technology terhadap Supply Chain Performance Melalui Strategic Performance Alignment pada Sektor Logistik di Kota Tarakan Fahris Ihsan; Maniah Maniah; Melia Eka Lestiani
Jurnal Ilmu Manajemen Terapan Vol. 7 No. 6 (2026): Jurnal Ilmu Manajemen Terapan (Juli - Agustus 2026)
Publisher : Dinasti Review Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/jimt.v7i6.9338

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh Internal Integration, External Integration, dan Information Technology terhadap Supply Chain Performance melalui Strategic Performance Alignment pada sektor logistik di Kota Tarakan. Penelitian menggunakan pendekatan kuantitatif dengan metode Structural Equation Modeling–Partial Least Squares (SEM-PLS) terhadap 120 responden yang bekerja pada perusahaan sektor logistik di Kota Tarakan. Hasil penelitian menunjukkan bahwa Internal Integration, External Integration, dan Strategic Performance Alignment berpengaruh positif dan signifikan terhadap Supply Chain Performance. Information Technology tidak berpengaruh secara langsung terhadap Supply Chain Performance (β = 0,161; p = 0,059), namun berpengaruh secara tidak langsung melalui Strategic Performance Alignment (β = 0,220; p = 0,002).
Co-Authors Fahris Ihsan Maniah Maniah Nariendra, Pradhana Wahyu