Impact of Fuel Injection Pressure and Timing on the Performance and Emissions of a Low Heat Rejection CI Engine with Fish Oil Methyl Ester, DEE and Butanol Blend

Abstract

This study examines how different fuel injection pressures and timings affect the performance and emissions of a Low Heat Rejection (LHR) engine running on blends of fish oil methyl ester, diethyl ether, and butanol. Results indicate that optimizing the injection pressure up to 230 bar enhances engine performance, fuel efficiency, and emission control. Research supports that increasing fuel injection pressure improves performance and combustion characteristics. For instance, studies have shown that high injection pressures can reduce  and soot emissions without compromising fuel economy. The depletion of petroleum resources, rising car use, and environmental concerns have made the demand for alternate fuels more urgent. Fish oil methyl ester, which is made from fish oil and may be made from animal fats and edible and non-edible oils, offers a possible substitute for biodiesel. Diesel engines are prized for their effectiveness, dependability, and longevity; timing and fuel injection pressure have a big impact on emissions and performance.  However, higher pressures show diminishing benefits, and fine-tuning the injection timing to 29° before top dead centre further improves efficiency and reduces emissions. This research highlights the crucial role of optimizing injection parameters to maximize engine performance and reduce emissions when using alternative fuels.