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.

尽管柴油和汽油燃料大量用于各个领域，但它也会排放大量颗粒物质，导致环境污染。一些研究学者致力于将内燃机改造成双燃料模式。但是需要先导燃料来启动替代燃料的工作。本文分析了在无引燃燃料的双燃料模式下工作的改进型单缸柴油机。改进后的发动机的排放分析和性能是使用双燃料（汽油和液化石油气 (LPG)）以恒定速度和 7.5 压缩比进行的。除此之外，本研究还计算了四种不同的排放参数，即碳氢化合物、一氧化碳、二氧化碳以及氮氧化物。还，对各种发动机参数进行性能分析，例如各种负载条件下的总油耗 (TFC)、制动比油耗 (BSFC) 和制动热效率 (BTE)。进行了实验分析，很明显LPG燃料表现良好，BTE约为50.36%；而在汽油和柴油中，BTE 达到 18.36% 和 27%。最后，进行了排放分析，分析表明 LPG 燃料在排放率最低的情况下优于汽油和柴油。