Abstract
Objective: To select the optimal combination of Variable compression ratio (VCR) diesel engine operating parameters using Sesbania aculeate biodiesel. Method/Statistical Analysis: The Analytical Hierarchy Process(AHP)approach is a mathematical approach used to find the optimal combination of VCR diesel engine operating parameters and the best blend of Sesbania aculeata biodiesel. Findings: It provides the alternatives and also the visualization of various criteria and their interrelations. The alternatives are ranked by measuring the criteria and their relative importance. The permanent concept helps for the better appreciation of criteria and considers the problem selection as it contains possible criteria components and their relative importance. It was found that the optimal combination of 100% load, 17.5 compression ratio and SAOME20 blend is the optimal combination of operating parameters of the VCR diesel engine. Novelty/Improvement: The best combination of operating parameters can be found systematically and logically using AHP. Keywords: Matrix, Permanent Index, Sesbania Aculeata Biodiesel, VCR Engine, AHP
Highlights
It has been proven for many years that alternative fuels can fulfil the demand of energy as the petroleum based fuels are depleting day by day
Diesel engines have a high compression ratio.The fuel injected at high compression ratio (CR), the ignition take place before an adequate air-fuel mixture is formed and leads to heterogeneous combustion
The aim of this study is to select the optimum combination of operating parameters such as fuel blend, load and compression ratio to get the better performance of the diesel engine using Analytical Hierarchy Process (AHP)
Summary
It has been proven for many years that alternative fuels can fulfil the demand of energy as the petroleum based fuels are depleting day by day. When the compression ratio reduced, the temperature and pressure are reduced and leads in reduction of NOx – soot emission. The engine best performance can be obtained by the optimal combination of operating parameters. The parameters like load, injection timing, compression ratio and injection pressure influence the engine performance. In1 the multi attribute decision making methods are proposed in conjunction with real time requirements. In9, AHP adapted to selection of manufacturing technologies. In10, adapted AHP in modelling a team and in turn selection of a team leader. The aim of this study is to select the optimum combination of operating parameters such as fuel blend, load and compression ratio to get the better performance of the diesel engine using AHP
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