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Simulation-Based Analysis of Piston Strength of a Modified Dual Fuel Diesel Engine


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DOI: https://doi.org/10.15866/ireme.v15i12.21758

Abstract


New study in converting of a diesel engine to be dual fuel capability has been developed from conventional one. The use of CNG as fuel results in lower efficiency and the power output is also decreased. In order to return the engine performance, the piston crown has been modified. The consequential of the piston crown modification causes the increase of the compression ratio. This research mainly investigates how the piston engine as the weakest material on the combustion chamber can resist the additional strength that may occurred. Four modification models have been generated and numerically tested. The validated models will be simulated to certain conditions that refer to the new combustion processes under different gas/diesel oil compositions. The material strength of the modified piston engines investigated to understand the acceptance of the modified engine. The simulation results show that the four modified piston crowns are safe without any predicted overstress and excessive deformation.
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Keywords


Dual Fuel; CNG; Piston Engine; Modeling and Simulation; Gas Powered Vessel; Strength Material

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