Study on Carbonyl Emissions of Diesel Engine Fueled with Biodiesel

Table 1

Physical and chemical properties of biodiesel and diesel.

Fuel	Biodiesel	0 diesel
Density (kg/m^3)	881	825～840
Viscosity (mm^2/s)	4.47	3.08.0
Cetane number	51.2	≥49
Low calorific value (MJ/kg)	33.6	42.5
Carbon hydrogen ratio	8.73	6.56
Oxygen content (%)	13.5	0
Self-ignition temperature (K)	628.5	473～493