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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 5, May 2009

Issue on Mechanical Engineering

Page(s): 35-40

Improvement In The Operating Characteristics Of Internal Combustion Engine Using Variation In Compression Ratio

Yadav Milind S, Wankhade P.A

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Abstract

Vast developments are taking place in the field of internal combustion engine especially to improve the fuel economy and to reduce the emission percentage in the exhaust gases so that engine can compete with stringent emission rules of present days. Two strokes engines became outdated due to their inability to compete with these standards. This work is an attempt to bring two strokes engine back in the field of automobile by increasing the fuel economy and reducing the emission levels. In this regard Variation in compression ratio is the technology used to improve the efficiency of the engines. Aim of this research work is to design, fabricate and test a simple two stroke variable compression ratio (VCR) engine with better power delivery, fuel economy and less emissions. With split type cylinder block and stud arrangement the clearance volume of existing fixed compression ratio (FCR) engine is varied thereby varying the compression ratio. Modified engine is having very less knocking tendency, high power output, high mechanical efficiency, higher values of IMEP and BMEP, good cold starting property, low emissions.

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