Investigations on effects of ethanol blending on performance and combustion characteristics of gasoline fuelled lean burn SI engine

10th International Conference on Combustion, Incineration/Pyrolysis, Emission and Climate Change

生态环境科学

Devunuri, Suresh^1 ; Porpatham, E.^1

Vellore Institute of Technology, Vellore, India^1

关键词: Brake thermal efficiency;    Carbon monoxide emissions;    Combustion characteristics;    Cylinder temperatures;    Ethanol gasoline blend;    Performance and emissions;    Single-cylinder diesel engine;    Wide open throttle;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/265/1/012019/pdf
DOI  :  10.1088/1755-1315/265/1/012019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This study discusses the effects of addition of small amount of ethanol on performance and emission behaviour of a gasoline fuelled lean burn SI engine. Experiments were carried out in a single cylinder diesel engine which is made to operate as SI engine on lean condition with gasoline as a fuel. The engine was operated at wide open throttle at a compression ratio of 10.5:1 and 1500 rpm at diverse equivalent ratios by injecting the fuel into manifold. The test outcomes stipulated that use of ethanol-gasoline blend (10% by volume) was better compared with pure gasoline. The test results also revealed that there was an accountable increase in brake power output, brake thermal efficiency and an apparent extension in the lean limit of operation with ethanol-gasoline blend. In emission front, reduction in hydrocarbon and carbon monoxide emissions were observed. There was an increase in carbon dioxide and NO emissions due to better combustion and high in-cylinder temperature. On the whole it is concluded that small ethanol addition to gasoline improves performance and reduces emission for lean operating SI engine.