Technical Paper
Performance Optimization of a 4 Cylinder, 5.3L, DI Diesel Engine for Power, Torque and Emission Level Up-Gradation Using 1-D Thermodynamic Simulation
2011-10-06
2011-28-0117
In the present work, a 4 cylinder, 5.3 liter, Direct Injection Diesel engine producing 140 kW rated power was upgraded to a higher power rating of 170 kW complying with Euro V emission norm. The exhaust after treatment strategy was changed from Exhaust Gas Recirculation (EGR) to Selective Catalytic Reduction (SCR). 1-D thermodynamic simulation was used to simulate the performance. The simulation model was calibrated for performance parameters with the test results available from the 140 kW engine. This model was used to carry out the turbocharger matching for the 170 kW engine using the Simplified and Full Turbocharger model. A parametric study was carried out for the variables like Compression ratio, Start of Combustion shift and Compressor pressure ratio in view of the target Brake Specific Fuel Consumption (BSFC) and Peak firing pressure limits. The finalized model parameters were used for carrying out a Full throttle and Part throttle performance at selected operating points.
