Trial no. Process parameter settings
Compression ratio Injection pressure (bar) Injection timing (degree)
1 15.5 220 19
2 15.5 220 23
3 15.5 220 27
4 15.5 230 19
5 15.5 230 23
6 15.5 230 27
7 15.5 240 19
8 15.5 240 23
9 15.5 240 27
10 16.5 220 19
11 16.5 220 23
12 16.5 220 27
13 16.5 230 19
14 16.5 230 23
15 16.5 230 27
16 16.5 240 19
17 16.5 240 23
18 16.5 240 27
19 17.5 220 19
20 17.5 220 23
21 17.5 220 27
22 17.5 230 19
23 17.5 230 23
24 17.5 230 27
25 17.5 240 19
26 17.5 240 23
27 17.5 240 27
Table 2: Experimental layout plan.