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July 15, 2026ProcessesOpen Access

Ethanol Effects on Combustion and Emissions in Partial HCCI Diesel Engines Under Variable Load and Speed Conditions

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Authors

ÇCÇiçek CeyhanAÇAslan ÇobanİCİdris Cesur

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Overview

Randomized trial examines ethanol's impact on combustion and emissions in diesel engines, suggesting improved performance and reduced emissions.

Key Points

  • This research investigates the effects of ethanol concentrations on engine performance and emissions in partial HCCI diesel engines.
  • Conducted experiments with a single-cylinder, water-cooled partial HCCI diesel engine.
  • Tested ethanol concentrations at 5%, 10%, 15%, and 20% under variable load and speed conditions.
  • Analyzed performance metrics including cylinder pressure, heat release rate, and emissions.
  • E20 blend increased maximum cylinder pressure by approximately 10% and peak heat release rate by nearly 38%.
  • Ethanol fumigation improved brake thermal efficiency and reduced brake-specific fuel consumption.
  • CO and CO2 emissions decreased by approximately 40% and 18%, respectively, while NOx and HC emissions increased by nearly 25% and 57%.

Cite This Study

Ceyhan et al. (2026) studied this question.

synapsesocial.com/papers/6a57245a88b21df875480b65https://doi.org/10.3390/pr14142273
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