Assignment 2
1.Run the case at 1800 rpm and list down important parameters
RPM: 1800, Comp. Ratio: 9.5, A/F Ratio: 14.5
- airflow rate
- BSFC
- BMEP = ( IMEP - FMEP - PMEP )
BMEP = (10.61 - 1.13 + 0.05) = 9.53 bar
- In-cylinder pressure
2. Increase the power output at 3600 rpm by 10%
Baseline Case:
Bore: 86 mm
Stroke: 86.07 mm
Power Output:
Parameter Variation:
Compression ratio, Air-Fuel ratio, Cylinder bore to piston stroke ratio
For SI engines general range of the parameters chosen are as below:
Compression ratio: 8 to 12
Air-Fuel ratio: 12 to 18
Bore to Stroke: 0.8 to 1.2 (for small and medium-sized engines)
10% increased power output case:
| Engine Speed [RPM] | 3600 |
| Compression Ratio | 12 |
| Air-Fuel Ratio | 14.5 |
| Bore [mm] | 86 |
| Stroke [mm] | 90 |
Power Output:
