Influence of Fuel Temperature on Performance and Emissions of Water-Emulsified Diesel Fuel
Pedro Oliveira, Francisco Brójo, Rafael Domingues
AI summary
70% confidenceThis study investigates the effect of water-in-diesel emulsion (WiDE) fuel temperature on engine performance and emissions, finding that higher temperatures lead to lower NO emissions, higher CO emissions, and decreased thermal efficiency.
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Abstract
Abstract Water-in-diesel emulsions (WiDE) are an alternative fuel to be used in diesel engines capable of offering the benefits of higher engine efficiency and lesser pollutant emissions. This work aims to show how differences in WiDE fuel temperatures may impact its combustion properties and how they translate into different performances and emissions. An emulsion composed of diesel, 8% (m/m) of distilled water, and 3% (m/m) surfactant was performed in laboratory by mechanical homogenization and tested in a single-cylinder Hatz 1B40 Direct Injection (DI) diesel engine coupled to an eddy current dynamometer, an emission gas analyzer, and an opacimeter. The tests were performed for the fuel temperatures of 40°C and 50°C, and at 75% of the maximum considered engine load at four different speeds. The results show that higher emulsion temperatures lead to lower NO emissions, higher CO emissions, and decreased thermal efficiency.
Key findings
- Higher emulsion temperatures lead to lower NO emissions.
- Higher emulsion temperatures lead to higher CO emissions.
- Higher emulsion temperatures lead to decreased thermal efficiency.
Keywords
Identifiers
- Journal
- Volume 6: Energy
- Year
- 2024