Investigation of Lubricating Oil and Exhaust Valve Deposit Formation Using Blend Fuels in CI Engine
Based on the fi ndings of short-term research, biofuels are determined to be an acceptable replacement for petroleum diesel fuel. Extended research using these kinds of oils as fuel identifi ed issues with engine wear and upkeep. A 200- hour test was conducted on a single-cylinder compression igni...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2025
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| Online Access: | http://journalarticle.ukm.my/26769/1/19.pdf http://journalarticle.ukm.my/26769/ https://www.ukm.my/jkukm/volume-3701-2025/ |
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| Summary: | Based on the fi ndings of short-term research, biofuels are determined to be an acceptable replacement for petroleum
diesel fuel. Extended research using these kinds of oils as fuel identifi ed issues with engine wear and upkeep. A 200-
hour test was conducted on a single-cylinder compression ignition engine to examine the eff ects of fueling on engine
longevity. This research work was carried out to investigate the long-term endurance test of DF100 (diesel fuel) as the
base fuel, and blended fuels: DF95WCO5 (5% waste cooking oil and 95% DF), and DF65WCO20Pe15 (20% waste
cooking oil, 65% DF, and 15% n-pentanol) through single-cylinder compression ignition (CI) engine. Further, the
effects of DF100, DF95WCO5% and DF65WCO20Pe15 on exhaust valve surface deposits were also investigated. The
SEM and EDS analysis showed that DF95WCO5 has a higher concentration of carbon deposits around the exhaust
valve surface as compared to DF100 and DF65WCO20Pe15. Further, ternary blend fuel had minimal carbon deposits
on the exhaust valve as compared to as compared to remaining both. This evidenced that the addition of pentanol
significantly reduced the carbon deposition on the exhaust valve surface. About DF, DF95WCO5, and
DF65WCO20Pe15, the percentage of carbon layer on exhaust valve surfaces is 44.67%, 45.42%, and 16.01%,
respectively. For the fuel DF65WCO20Pe15, there was very little exhaust valve deposit formation during
experimental examination. The ternary blend fuel also observed less concentration of Iron, Copper, Nickel and wear
debris concentration as compared to DF100 and DF95WCO5. |
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