PRACA ORYGINALNA
Sustainable Coconut Oil-Based Bio-Damping Fluid in Motorcycle Suspension Systems: Experimental Evaluation of Damping Force and Ride Comfort
1
Automotive Engineering Technology, Politeknik Negeri Madiun, Indonesia
Data nadesłania: 15-12-2025
Data ostatniej rewizji: 25-05-2026
Data akceptacji: 15-06-2026
Data publikacji: 30-06-2026
Autor do korespondencji
The Archives of Automotive Engineering – Archiwum Motoryzacji 2026;112(2):23-43
SŁOWA KLUCZOWE
viscosity stabilitybiococonut fluidmotorcycle suspension systemdamping force characteristicsride comfort analysis
DZIEDZINY
STRESZCZENIE
This study aims to analyze the effect of adding bio coconut oil to 20W synthetic oil on the damping force characteristics and comfort of the rear shock absorber of a Honda Vario 125 cc motorcycle. The bio coconut oil uses a refined, bleached, and deodorized (RBD) type. The mixing percentage of bio coconut oil is 15%, 30%, and 45%. Damping force analysis uses a damper test with temperatures of 27°C and 31°C. The results of the damper test are used in the analysis of the damping coefficient calculation. The damping coefficient is then entered into the half-vehicle suspension model in Simulink MATLAB with sinusoidal excitation. Furthermore, an analysis of the RMS (Root Mean Square) acceleration value is carried out to assess comfort based on the ISO 2631 standard. The results show that 15% (15% coconut oil) produces the highest rebound force compared to other mixtures, namely 489.53N at 27°C and 392.10N at 31°C. The simulation results show that the 15% variation also produces an RMS acceleration that is almost equivalent to the original oil. Therefore, a mixture of 15% coconut oil is proven to maintain comfort levels according to ISO 2631 standards.
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