Prediction and Analysis of Engine Friction Power of a Diesel Engine Influenced by Engine Speed, Load, and Lubricant Viscosity

Table 4

Full factorial design of experiments comprising variables speed, load, oil viscosity, and response variable friction power (FP) in kW.

Run order	Speed (rpm)	Load (Nm)	Viscosity (cSt)	FP (kW)
1	2000	200	14.5	10.95
2	2000	50	11	10.04
3	1000	350	11	2.58
4	2000	350	14.5	2.67
5	1000	200	14.5	2.28
6	1000	50	14.5	1.77
7	2000	200	11	7.02
8	1000	50	11	2.1
9	2000	350	11	1.33
10	1000	50	11	2.52
11	1000	350	14.5	2.22
12	2000	50	14.5	12.17
13	2000	50	14.5	12.78
14	2000	350	14.5	4.84
15	1000	200	11	1.91
16	1000	200	11	2.03
17	1000	200	14.5	2.53
18	2000	200	14.5	10.12
19	1000	50	14.5	1.92
20	2000	350	11	2.83
21	1000	350	14.5	2.85
22	2000	50	11	9.95
23	1000	350	11	2.58
24	2000	200	11	9.78