Performance and Emission Analysis of Modified Compression Ignition Engine from Diesel Engine to Variable Load using Petrol and LPG Fuel

Even though diesel and petrol fuels are utilized largely in various fields it also emits a substantial amount of particulate matter that results in environmental pollution. Several research scholars have worked on modifying an IC engine as a dual fuel mode. But a pilot fuel is required to start the working of alternate fuel. This paper analyzes the modified single-cylinder diesel engine working on a dual fuel mode without pilot fuel. The emission analysis and the performances of the modified engine are working on dual fuel (petrol and liquefied petroleum gas (LPG)) at a constant speed and compression ratio of 7.5. In addition to this, four different emission parameters namely hydrocarbons, carbon monoxide, carbon dioxide as well as nitrogen oxide are computed in this study. Also, the performance analysis is carried out for various engine parameters like total fuel consumption (TFC), Brake specific fuel consumption (BSFC) and Brake thermal efficiency (BTE) for various load conditions. The experimental analysis is performed and it is evident that the LPG fuel performs well with a BTE of about 50.36%; whereas in petrol and diesel the BTE achieved is 18.36% and 27%. Finally, the emission analysis is carried out and the analysis demonstrates that LPG fuel outperforms petrol and diesel with minimum emission rates.

Automated summary

This study analyzes the working and emission performance of a modified single-cylinder diesel engine operating on a dual fuel mode without pilot fuel. The results show that liquefied petroleum gas (LPG) fuel achieves better brake thermal efficiency and lower emissions compared to petrol and diesel fuels.