earticle

영어

A great deal of emphasis is placed on the real societal benefits around nanotechnology for energy efficiency, renewable resources, environmental remediation and pollution prevention. In particular, new and better techniques for pollution control are emerging as nano-particles push the limits and capabilities of technology. Environmental Pollution by vehicles is caused due to tail-pipe exhaust emissions depending on changes in driving cycles, engine condition, fuel composition and air-fuel ratio. Malfunction of engine devices, especially fuel injection system, increases the emissions of the main exhaust components. In the present work, an improved design more suitable for implementation along with improved performance and efficiency in reducing the exhaust emissions from a four stroke spark ignition engine. In the present work some alterations and modifications have been designed so as to increase the retention period of exhaust gases to provide more time for its oxidation and thereby to reduce the harmful emission. In this research, modeling has been done for a four stroke spark ignition engine with nano-sized copper coated catalytic converter. It will throw a light on the reduction in emission achieved by nano-particle coating. This paper opens a gateway to study the changes in the concentration of exhaust emissions due to the nano-material coating. The modeling will help in understanding the mathematical nature of the process. The behavioral modeling, starts from analyzing the practical behavior of four stroke engine with designed catalytic convertor, and then approximating obtained behavior in terms of mathematical equations. These obtained equations actually represent behavior of concern system. Firstly, mathematical model is developed to implement it in the simulink platform. Then, to verify the results obtained from the model, simulation is performed.