| Summary: | 碩士 === 國立虎尾科技大學 === 機械與機電工程研究所 === 98 === The oil contamination occurs when the vehicle travels low distance or travels at low speed. When the engine temperature is below the normal temperature, the condensed steam cannot vaporize completely, and then the emulsification of the engine oil will be occurred. When the engine temperature is above 120℃, the engine oil superheated will combine with the oxygen, and then sludge mixed with the coke (carbon deposition) will be produced to reduce the efficiency of lubrication. The efficacy of cleanup methods in reducing oil contamination at spill sites is typically determined by measuring concentration of solvent and hazardous metals in used oil and sludge samples. Although, these values may provide a direct concentration of contaminants, they may not be indicative of what is transferred to groundwater. This paper investigates the performance of automobile engine before/after reducing oil contamination by experiments to verify the efficacy of cleanup methods in reducing oil contamination.
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