Petroleum Diesel, commonly referred to as Conventional Diesel or Petro-Diesel, is a middle-distillate hydrocarbon fuel obtained from the fractional distillation of crude oil, typically in the 200°C to 350°C boiling range. It is specifically formulated for compression-ignition (CI) engines, where fuel combustion occurs due to high temperature and pressure rather than spark ignition.
Due to its high energy density, superior torque output, and operational efficiency, petroleum diesel remains the backbone fuel for transportation, industrial operations, construction equipment, mining, agriculture, marine operations, and standby/prime power generation worldwide.
Production & Refining Process
Petroleum diesel is produced through a multi-stage refining process:
Crude Oil Distillation
Crude oil is heated in a distillation column.
Diesel fraction is separated between lighter fuels (petrol, kerosene) and heavier oils.
Hydrotreating / Desulphurization
Removes sulphur, nitrogen, and aromatics
Improves emissions performance and fuel stability
Blending & Additivation
Cetane improvers, lubricity enhancers, cold-flow improvers, and antioxidants are added.
Ensures compliance with regional fuel standards (BS-VI, EN 590, ASTM D975).
Quality Testing
Tested for cetane number, viscosity, flash point, sulphur content, and water contamination before distribution.
Key Characteristics
Compression Ignition Efficiency
Self-ignition under high compression results in:
Lower fuel consumption
Higher thermal efficiency
Improved reliability for continuous operations
Excellent Lubricity
Natural lubricating properties protect:
Fuel injectors
High-pressure fuel pumps
Engine valves
(ULSD grades are often enhanced with lubricity additives.)
Strong Torque Generation
Diesel engines deliver higher torque at lower RPM, making the fuel ideal for:
Heavy vehicles
Construction and mining equipment
Industrial motors
Storage & Handling Stability
With proper storage conditions:
Low volatility reduces evaporation losses
Stable chemical structure allows extended shelf life
Suitable for bulk industrial storage tanks
Cost & Operational Advantage
Lower fuel consumption per unit of work reduces:
Operating costs
Maintenance frequency
Downtime in heavy machinery
Typical Mechanical & Chemical Properties
| Property | Typical Value |
|---|---|
| Density @ 15°C | 820 – 860 kg/m³ |
| Cetane Number | 45 – 55 |
| Kinematic Viscosity @ 40°C | 1.9 – 4.1 cSt |
| Flash Point | Minimum 52°C |
| Sulphur Content | <350 ppm (HSD) / <10 ppm (ULSD) |
| Net Calorific Value | 43 – 46 MJ/kg |
| Pour Point | –10°C to –20°C |
| Water Content | <0.05% |
Environmental & Emission Considerations
Modern petroleum diesel grades comply with stringent emission regulations:
Ultra-Low Sulphur Diesel (ULSD) significantly reduces SO₂ emissions.
Compatible with after-treatment systems:
Diesel Oxidation Catalysts (DOC)
Diesel Particulate Filters (DPF)
Selective Catalytic Reduction (SCR)
Lower particulate matter and improved exhaust quality compared to legacy diesel fuels.
Storage, Safety & Handling
Stored in carbon steel or approved fuel tanks
Keep away from direct sunlight and moisture
Flash point above 52°C makes it safer than petrol
Periodic water drainage and filtration recommended for bulk storage
Follow standard fuel handling and spill-control procedures
Available Supply Formats
We offer Petroleum Diesel in multiple supply options to match operational scale:
Bulk Tanker Supply – Continuous industrial and fleet requirements
Steel Drums (200L / 210L) – Workshops, factories, and remote sites
Jerry Cans (20L / 50L) – Portable and emergency fuel needs
Direct-to-Site Delivery – Construction, mining, and power projects
Applications of Petroleum Diesel (Detailed)
Transportation:
Trucks, buses, tractors, commercial vehicles
Long-haul logistics and fleet operations
2. Power Generation:
Diesel Generator (DG) sets
Prime, standby, and emergency power systems
3. Industrial Machinery:
Excavators, loaders, cranes, compressors
Mining and material-handling equipment
4. Manufacturing & Processing:
Boilers, furnaces, material handling
Captive power plants in factories
5. Commercial & Institutional Use:
Hospitals, data centers, hotels
Infrastructure projects and utilities