Abstract
In this present work, experimental study is performed in a naturally aspirated four stroke 1-cylinder DI-CI engine. Attribute of the engine particularly performance and emission are analysed considering ethanol and butanol blended diesel as well as pure diesel as fuel feeds. Then comparative study of performance and emission, at a fixed compression ratio (CR = 18), is studied at varying loading conditions. It is noted that, experimental results inhibit good agreement with the studies reported in the literature. It is examined that, blending of 12%v/v of butanol-diesel offers 10% more brake thermal efficiency than blending of 12% v/v of ethanol with diesel at 82% loading. NOx, HC and CO emission for 12% v/v of ethanol–diesel blend is 52%,53% and 14% lesser than 12%v/v of butanol-diesel blend at 82% loading. Additionally, it isimparted that, although higher series alcohol addition to the diesel yields in better performance characteristics of the engine but at the same time leads to poor emission characteristics.
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