OTTO CYCLE

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INTRODUCTION

The Otto cycle is the air standard cycle of the SI engine.


It is named after Nikolaus A. Otto, a German engineer, who first built a successful four-stroke SI engine in 1876 by using the cycle proposed by Frenchman Alphouse Beau Richas in 1862.


AIR STANDARD CYCLE

A thermodynamic cycle in which the working fluid is considered to be a perfect gas.

The engine utilize a gas as the working fluid are S.I & C.I. The operation of these engine can be analyzed by assuming that the working fluid go through a complete thermodynamic cycle. The cycle is called an air standard cycle..


APPLICATION OF four-stroke cycle


Today, internal combustion engines are used in cars, trucks, motorcycles, aircraft, construction machinery and many others.


Conclusion


The Otto Cycle efficiency increases with an increase in the compression ratio. Also, the Otto Cycle power output increases with an increase in the combustion temperature and the Otto Cycle power output is greater for higher compression ratio values.