Faculty of Automotive and Transport EngineeringBook 4.1 · Transport and Machine Science

FRI-20.21-1-TMS-15

ISOPROPANOL AS AN ALTERNATIVE FUEL FOR DIRECT INJECTION GASOLINE ENGINES

Slavena Atanasova, M.Eng, PhD Student

Department of Engines and Vehicle “Angel Kanchev” University of Ruse

E-mail: satanasova@uni-ruse.bg

Assoc. Prof. Simeon Iliev, PhD

Department of Engines and Vehicle “Angel Kanchev” Univesity of Ruse

E-mail: spi@uni-ruse.bg

Abstract

The search for alternative and sustainable fuels for internal combustion engines is becoming increasingly important considering global trends of increased energy consumption and the growing environmental and climate challenges. Isopropanol is considered as a potential substitute or additive for traditional gasoline. Experimental investigations on isopropanol-gasoline blends (IP10-IP50) reveal substantial improvements in combustion efficiency and reductions in CO and HC emissions, attributed to isopropanol's high-octane number (RON 118) and elevated oxygen content (26.6 wt%). While NOx emissions increase with higher isopropanol concentrations, the overall environmental and performance benefits demonstrate isopropanol's viability as a sustainable fuel alternative for direct injection gasoline engines.

Keywords

Alternative fuels, isopropanol, fuel additive, direct injection engines, emissions

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