Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine
Table 3
L9 Experimental results of the engine emissions and performance.
Speed
PMF-ratio
NOx
CO
CO2
HC
BT
BP
SNR
LSTD
STD
Mean
CV
2200
0
41
0.251
4.04
21
14.16016
3.28355
−25.9286
2.73238
15.369
13.9558
1.10129
2200
25/75
36
0.512
2.62
53
15.18555
3.5058
−28.6084
3.06736
21.485
18.4706
1.16321
2200
50/50
37
0.73
2.34
30
15.23438
3.84225
−26.2357
2.73921
15.475
14.8578
1.04152
2600
0
92
0.677
4.79
23
14.16016
3.87003
−31.8714
3.54794
34.742
23.0829
1.50509
2600
25/75
38
2.692
1.94
313
14.16016
3.84225
−42.2028
4.81697
123.59
62.2724
1.98466
2600
50/50
69
0.92
2.49
34
15.18555
4.52167
−30.1249
3.27898
26.549
21.0195
1.26305
3000
0
152
1.058
6.41
48
14.11133
4.51805
−36.3127
4.07015
58.566
37.6829
1.55417
3000
25/75
33
4.537
3.85
510
14.16016
4.52167
−46.3923
5.3162
203.61
95.0115
2.14299
3000
50/50
115
1.652
3.64
50
14.16016
4.43393
−34.2491
3.80119
44.754
31.481
1.42163
Engine speed in rpm and the premixed fuel ratio in percent volume; NOx and HC emissions are in particulate per million; CO and CO2 are in percent volume; BP is the brake power in kW and BT is the brake torque in N-m. SNR: signal-to-noise ratio; LSTD: least square standard deviations; STD: standard deviation; CV: coefficients of variance.
