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Effect of Engine Parameters on Performace and Emission Characteristics of a Gasoline Direct Injection Engine with Baffles

Effect of Engine Parameters on Performace and Emission Characteristics of a Gasoline Direct Injection Engine with Baffles

Date24th Jan 2024

Time05:00 PM

Venue Rudolf Diesel Hall, IC Engines Laboratory, Department of Mechanical Engineering

PAST EVENT

Details

Baffles inside the combustion chamber are proven to enhance in-cylinder mixture distribution, thereby improving performance and emission characteristics. In this study, an analysis using computational fluid dynamics is done to investigate the effects of various engine parameters, namely injection pressure, engine speed, and engine load, in a spray-guided naturally aspirated gasoline direct injection engine with baffles. The results are compared with cases without baffles (base engine). For the analysis, the injection pressures of 30 bar, 50 bar, 80 bar, and 120 bar are considered, maintaining a constant operating condition of 1000 rev/min., and a compression ratio (CR) of 10. Moreover, the impact of engine speed is examined by varying the engine speeds to 1000 rev/min., 2000 rev/min., and 3000 rev/min., while keeping the start of injection (SOI) constant at 260 CAD before TDC and 80 bar fuel injection pressure. Furthermore, the impact of engine load is studied by varying the overall equivalence ratio from 1.0, 0.75, to 0.5. The analysis shows that the engine with baffles (EWB) developed a good mixture stratification near the spark plug location under all considered conditions of injection pressures, engine speeds, and engine loads. Additionally, performance and emission characteristics showed a substantial improvement in the engine with baffles compared to the base engine.

Speakers

Mr. Vishal V, ME19D021

Department of Mechanical Engineering