Diesel is a fuel suitable for burning in diesel or compression ignition engines. Petroleum diesel fuels may be distillates or blends of distillates and residual fuels. High Speed Diesel (HSD) and Light diesel oil (LDO) sold main diesel grades marketed in India.
What is LDO? Where does LDO use?
LDO is a blend of distillate fuel with a small proportion of residual fuel. The stationary type of diesel engines operating above 750 rpm use LDO as a fuel. ldo(light diesel oil) is a medium colored fuel either distilled or residual fraction of various oils that is extracted while distillation. This fuel is free flowing in nature. LDO is class C category fuel. light diesel oil is an affective alternative fuel for varieties of furnace and boiler applications.
Light diesel oil specification
| Technical Specification | BIS Standard for LDO | LDO of oil Marketing companies |
|---|---|---|
| Calorific Value in Kcal/kg | 9900 – 10500 | 10300 |
| Ash% Mass Max | 0.02 | 0.01-0.02 |
| Carbon Residue (Ramsbottom) on 10% residue % by Mass Max | 1.5 | 1.5 |
| Density in Kg/M3 | To be reported | <890 |
| Kinematic Viscosity @ 40 Deg.C. in cst | 5-15.7 | 5-15.7 |
| Biodegradability | Poor Biodegradability | |
| Toxicity | Highly Toxic | |
| Fuel type | Polluting Non renewable | |
| Shipping | Hazardous | |
| Total Sulphur % by mass. Max | 1.8 | 1.5-1.8 |
| Water content % by volume ” Max | 0.25 | 0.25 |
| Flash Point in Deg.C Min | 66 | 66 |
| S.No | PARAMETER | SPECIFICATION | STD.METHOD | TYPICAL QUALITY |
| 1. | Relative Density @ 15 °C, Kg / m3 | Report | IS 1448(P: 32) | 855 |
| 2. | Flash Point (PMC), °C | 66 Min. | IS 1448(P: 21) | 74 |
| 3. | Viscosity, Kinematic @ 40°C, cSt | 2.5 to 15.7 Max. | IS 1448(P: 25) | 5.0 |
| 4. | Ramsbottom Carbon Residue (RCR) , percent by mass | 1.50 Max | IS 1448(P: 8) | 1.30 |
| 5. | Copper Strip Corrosion, 3 hrs at 100°C | Not Worse than No. 2 | IS 1448(P: 15) | No.1 |
| 6. | Water content % by Vol. | 1.0 Max. | IS 1448(P: 40) | <0.05 |
| 7. | Sediment % by Mass | 0.10 Max. | IS 1448(P: 30) | 0.04 |
| 8. | Ash % by Mass | 0.02 Max | IS 1448(P: 4) | 0.01 |
| 9. | Acidity, Inorganic, mg KOH /gm, | NIL | IS 1448(P: 2) | Nil |
| 10. | Sulphur, Total % by Mass | 1.8 Max | IS 1448(P: 33) & P: 35 | 1.2 |
| 11. | Pour Point, °C | 12°C for Winter, Max 21°C for Summer, Max | IS 1448(P: 10) | Minus 3 |
