Performance and Emission Analysis of Common Rail Diesel Engine with Microalgae Biodiesel

Table 3

Characteristics of biodiesel.

Properties	Diesel	AME	B50	B20
Cetane number	48	52	51	51
C/H/O (molar ratio)	16 : 30 : 0	19 : 34 : 2	20 : 33 : 1	21 : 33 : 2
Density, g/cm^3 (15 C)	0.83	0.89	0.90	0.91
Kinematic viscosity, cSt (37.8 C)	3.3	4.5	4.8	4.9
Net calorific value kJ/kg	43000	36000	42000	44000
Clod point (C)	>4	>4	>4	>4
Carbon content (wt %)	86.5	77.4	74.2	72.1
Hydrogen content H (wt %)	13.4	12	12.2	12.3
Oxygen content O (wt %)	—	10.5	11.1	11.2
Sulfur content S (wt %)	0.05	<0.01	<0.01	<0.01
Stoichiometric ratio A/F	14.5	12.6	12.4	12.5
Iodine number, g I2/100 g	—	118	119	119
Distillation curve
10% EV	181	332	352	354
50% EV	255	340	345	347
90% EV	337	350	354	355
F.B.P.	372	353	359	360
Carbon residue (wt %)	0.01	0.05	0.06	0.06
Biodegradability	No	Yes	Yes	Yes