Combustion and Emission Characteristics of Variable Compression Ignition Engine Fueled with Jatropha curcas Ethyl Ester Blends at Different Compression Ratio

Table 3

Test matrix for combustion and emissions study on diesel engine.

Sr. No.	Variables	Types of variables studied	Details of variables studied
1	Independent	(1) Fuels used	B0, B10, B20, B30 and B40
		(2) Load (%)	0, 25, 50 and 75
		(3) Compression ratio	16.5 : 1, 17.5 : 1, 18.5 : 1
2	Dependent	(1) Heat release rate (HRR)	At 0%, 25%, 50%, 75% of rated load
		(2) Ignition delay	At 0%, 25%, 50%, 75% of rated load
		(3) Peak pressure	At 0%, 25%, 50%, 75% of rated load
		(4) CO emissions	At 0%, 25%, 50%, 75% of rated load
		(5) NO𝑥 emissions	At 0%, 25%, 50%, 75% of rated load