Simulation and Experimental Study of Performance Characteristics of Ethanol-Diesel Fuelled HCCI Engine

Abstract

The majority of fossil liquid and gaseous fuels are being used for automotive engines throughout the world. The use of alternative energy sources which are renewable in nature for an automotive engine will definitely result in the saving of a large number of fossil fuels. In this work, we have proposed to use ethanol with diesel as a fuel to run the CI engines in HCCI mode. The CI and HCCI engine models are simulated by using GT-POWER software. The single-cylinder diesel engine model is converted into a single-cylinder CRDI dual-fuel engine model. The analysis is carried out for performance analysis of CI, Electronic CI, and HCCI engine. From simulation results, it is observed that the HCCI engine is able to run with increased operating range without affecting the performance parameters as compared to the CI engine. It is further observed that HCCI engine at Injection timing of 24o BTDC for diesel and 5o ATDC for ethanol with constant injection pressure results in increased brake thermal efficiency up to 40% load and maintain same output when compared to the performance of CI and Electronic CI engine. Average 34 % diesel is replaced with ethanol. A premixed ratio of 0.4 is achieved at full load condition. An average reduction of 26.9 % diesel consumption in HCCI engine is achieved as compared to fuel consumption of CI engine at varying load conditions.