Study of Performance of Petrol Engine with Variable Compression Ratio using Ethanol as a Blend

Pai, Srinath and Kumar, Sathish M and Madhwesh, N and Sharif, Abdul (2012) Study of Performance of Petrol Engine with Variable Compression Ratio using Ethanol as a Blend. In: Recent Advances and Challenges in Energy, January 4 – 6,, Manipal Institute of Technology.

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Abstract

The present paper describes the performance of a petrol engine with variable compression ratio using ethanol blend as fuel. A study of the effect of compression ratio on the performance is carried out on a 4-stroke spark ignition engine with 5%, 10%, 15% and 20% ethanol blend with petrol, for compression ratios 5:1, 6:1, 7:1 and 8:1. The experiment is carried out at a constant speed of 2000rpm for various loads of 25%, 50%, 75% and full load. Among the performance parameters, attention was concentrated on mechanical efficiency, volumetric efficiency and brake specific fuel consumption. The mechanical efficiency and volumetric efficiency of the engine is found to be higher at 15% ethanol blend for all compression ratios and is higher for compression ratio of 8:1 compared to other compression ratios. The specific fuel consumption of the engine is found to be lowest for 15% ethanol blend for all compression ratios and is found to be lowest for a compression ratio of 8:1.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Compression ratio, Engine performance, Ethanol blend
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 19 Mar 2013 06:09
Last Modified: 19 Mar 2013 06:09
URI: http://eprints.manipal.edu/id/eprint/79133

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