Table 5 Response table for S/N ratio of all response variables.

From: Optimization of SiO2 based water–diesel emulsified fuel for engine performance and emission characteristics using soft computing approaches

Response

Level

Load (%)

Injection Pressure (bar)

Injection Timing (bTDC)

BTE

1

23.18

25.17

25.68

2

27.13

26.45

26.58

3

28.37

27.06

26.42

Delta

5.19

1.89

0.90

Rank

1

2

3

NOx

1

-44.84

-51.01

-51.61

2

-54

-51.93

-52.19

3

-57.15

-53.06

-51.12

Delta

12.31

2.05

0.59

Rank

1

2

3

Smoke

1

-29.31

-31.09

-31.93

2

-31.72

-31.85

-31.77

3

-34.65

-32.74

-31.98

Delta

5.34

1.64

0.22

Rank

1

2

3