Response Analysis of an Experimental Study on the Effect of Speed and Premixed Fuel Ratio on Performance and Emissions in RCCI Engine

Table 6

Estimated model coefficients for standard deviation.

Term	Coeff	SE coeff	T	value
Constant	60.460	14.17	4.266	0.013
Speed 2200	−43.017	20.04	−2.146	0.098
Speed 2600	1.167	20.04	0.058	0.956
PMF ratio	−24.234	20.04	−1.209	0.293
PMF ratio 25/75	55.768	20.04	2.783	0.050

S = 42.5134; R-Sq = 77.49%; R-Sq (adj) = 54.98%.