Experimental Investigation on Impact of EGR Configuration on Exhaust Emissions in Optimized PCCI-DI Diesel Engine

Table 3

Control factors and their levels.

Parameters Code	Parameters	Unit	3 Levels
			1	2	3
			–1	0	1
A	Injection timing (advanced)	CA BTDC	23	25	30
B	EGR rate	%	25	35	45
C	Dieseline ratio for DI (D : G)	% By Vol	60	80	90
D	Load	%	25	50	75