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IMPROVED PERFORMANCE AND REDUCTION IN EMISSION RUNNING ON DIRECT INJECTION COMPRESSION IGNITION AND HOMOGENEOUS CHARGE COMPRESSION IGNITION DIESEL ENGINE USING PONGAMIA OIL AND DIESEL
IMPROVED PERFORMANCE AND REDUCTION IN EMISSION RUNNING ON DIRECT INJECTION COMPRESSION IGNITION AND HOMOGENEOUS CHARGE COMPRESSION IGNITION DIESEL ENGINE USING PONGAMIA OIL AND DIESEL
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机译：庞加玛油和柴油直接喷射压燃和均质充压压燃柴油机的排放运行性能提高和降低
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ABSTRACT: The present work investigates the performance and emission characteristics of Pongamia oil and diesel fuelled DICI and HCCI engine. The primary objective of the work is to investigate the feasibility of application of unmodified Pongamia oil in diesel engine and to estimate the maximum fraction of diesel fuel replaced by the neat Pongamia oil. This investigation also deals with the HCCI operation using unmodified Pongamia oil. That is the present work investigates the performance and emission characteristics of neat Pongamia oil in both DICI and HCCI mode. In DICI mode the neat Pongamia oil is admitted into the engine in the form of Pongamia oil and diesel blends. The blend that offers highest diesel replacement is considered as the test blend and it is tested further to find its maximum possible BTE by changing the engine operating parameters. The setting at which the engine offers maximum BTE is considered as the optimum engine operating parameters. The maximum blend proportion is fixed based on the cold staring ability and smoke level of blend. Though, the lower blends are performing well they are not considered for the investigation as they are replacing diesel fuel lower than the selected blend. The selected maximum blend is then tested in the new setting of the engine to determine the maximum possible performance and emission characteristics. The same proportion of neat Pongamia oil is tested in the HCCI engine to study change of performance and emission characteristic. The conventional emissions of DICI engine such as NO and smoke are disappeared in the HCCI mode of operation. This investigation also addresses the issues of Pongamia oil felled HCCI engine. The HCCI engine tested in the present work is fuelled by 40% neat Pongamia oil and 60% diesel fuel through direct injection and vapour induction respectively. Since the boiling point of neat Pongamia oils is 400C, the vapourisation of neat Pongamia oil consumes more heat energy. In addition to that the vapourisation of neat Pongamia oil deposits wax like material in the heater and affects the heater function.
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