Optimization Analysis of Engine Intake System Based on Coupling Matlab-Simulink with GT-Power

Table 5

Calculated results of VVT.

Speed (r/min)	Intake timing		Exhaust timing
	Original	Optimized	Original	Optimized
1200	234.5	225.5	125	120
1600	234.5	227	125	121
2000	234.5	228	125	122
2400	234.5	230	125	122
2800	234.5	230	125	122
3200	234.5	230	125	123
3600	234.5	230	125	123
4000	234.5	227	125	126
4400	234.5	234	125	125
4800	234.5	234.5	125	127
5200	234.5	236	125	126
5600	234.5	237	125	126