EFFECT OF SUPER OLEIN OIL ON ENGINE MATERIALS FOR POTENTIAL USE IN HYDROGEN INTERNAL COMBUSTION ENGINES AT ROOM TEMPERATURE
DOI:
https://doi.org/10.11113/jurnalteknologi.v88.25003Abstract
This study investigates the tribological performance of super olein (SO), a biodegradable vegetable-based lubricant, on common internal combustion engine materials, aluminum alloy, pure copper, and SKD11 steel under conditions relevant to hydrogen-fueled engines. Using a linear reciprocating tribotester (ASTM G133-05), tests were performed at room temperature, 25 N load, and 2 Hz frequency for 10 minutes per specimen. With growing interest in sustainable lubricants for hydrogen internal combustion engines (H₂ICE), SO was compared with commercial hydrogen engine oil (CHEO). SO consistently showed lower friction (COF), with the highest value on copper (0.0438 vs. 0.0618 for CHEO). However, wear scar diameters (WSDs) were larger for SO, particularly on aluminum. SKD11 steel, with the highest hardness (219.9 HV), showed the least wear. Adhesive and abrasive wear were identified. Findings suggest SO is a promising, eco-friendly lubricant, especially with harder materials like SKD11.
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