Combustion Characteristics of a Small Diesel Engine Fueled with Ethanol and Polyethylene Glycol as Ignition Improver during Start of Engine
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Abstract
This research aims to analyze the performance and combustion characteristics of a small diesel engine fueled by ethanol blended with Polyethylene Glycol (PEG) as an ignition improver. The experiments were conducted on a single-cylinder, Direct Injection (DI) diesel engine under no load and at maximum fuel position. The concentration of PEG was varied from 18% to 35% by weight. The experimental results revealed that the PEG proportion is a factor influencing engine startability; the engine failed to start when the PEG concentration was below 18%. Combustion analysis indicated that increasing the PEG concentration led to an advanced start of combustion (SOC) and a significant reduction in ignition delay. These improvements were directly correlated with a decrease in the number of misfire cycles. The findings of this study can serve as a guideline for determining the optimal additive proportions for utilizing ethanol in agricultural diesel engines.
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ลิขสิทธ์ ของมหาวิทยาลัยเทคโนโลยีราชมงคลพระนครReferences
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