Abstract
This research presented the technical production and necessary analysis for the conversion of natural rubber scrap into GLF and DLF. The essential properties were measured and discussed in terms of use as fuel for internal combustion engines. Upgrading the fuel properties by improving the oxidation stability of GLF and evaluating its performance and emission characteristics in a spark-ignition engine was investigated. The results showed that the density, viscosity, octane number, and distillation curves of GLF and DLF were similar in terms of the values for commercial gasoline and diesel. The low oxidation stability from high olefins content in GLF was standardized by the addition of BHT with an induction period of around 62 min/%wtBHT for the studied range of 0-10 %wt. In addition, engine performance test results from using GLF were comparable to gasoline95 with a slight increase in brake torque, brake power, and brake-thermal efficiency, estimated at 6%, 8%, and 11%, respectively. In comparison to gasoline95, the emissions from GLF have approximately increased CO by 18% and NOx by 80%. GLF can be burned in spark-ignition engines without any negative impact on engine performance and can be upgraded to properties that closely resemble standard fuel with a few minor improvements.
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