About DEF (Diesel Exhaust Fluid)
Diesel Exhaust Fluid (DEF) is a required emission-control solution for BS6 diesel engines, reducing harmful NOx gases by up to 90%. Supported by government regulation and growing ECO demand, DEF ensures keeping, cleaner air and long-term fleet sustainability.
How DEF Works in BS6 Engines
In BS6 engines, DEF is stored in a separate tank.
As exhaust gases exit the engine, DEF is injected into the SCR unit.
Inside the SCR, DEF reacts with NOx gases, converting them into nitrogen (N₂) and water (H₂O).
Result: Up to 90% reduction in NOx emissions, ensuring compliance with BS6 norms.
Live CO₂ Counter
CO₂ Reduced
So Far
9,87,432kg
Eco Impact Stats
Cleaner air in
75+ cities
Equivalent to planting
28,000 Trees
DEF-powered vehicles
5,200+ on road
NOx emissions cut
1.2 million liters worth
Market Division
Summary in Numbers
| Metric | Value |
|---|---|
| 2023 Market Size (USD) | 426.2 million |
| 2030 Projected Size (USD) | ~693–694 million |
| CAGR (2024–2030) | 6.2–7.2% |
| APO Region 2022 Size | 11.84 billion USD |
| APO Region 2027 Forecast | 17.24 billion USD (7.8%) |
| DEF Dispensers in India (2024) | ~3,000 stations |
| Fuel Stations Offering DEF (~2023) | ~30% |
Common Terms You Should Know
Understanding DEF vocabulary allows you to choose better. Here are the keywords simplified.
| Term | Meaning |
|---|---|
| DEF | Diesel Exhaust Fluid — a mix of 32.5% urea and 67.5% deionized water |
| Urea | A nitrogen-based compound used in DEF to neutralize NOx emissions |
| SCR | Selective Catalytic Reduction — the system where DEF neutralizes emissions |
| NOx | Nitrogen Oxides — harmful pollutants reduced by DEF |
| ISO 22241 | International standard that defines DEF purity and usage guidelines |
| AdBlue® | A registered trademark for DEF — Ecovance uses a generic DEF that meets the same quality |
| BS6 | India’s Bharat Stage 6 emission norms — similar to Euro 6 standards |
| IBC Tank | Intermediate Bulk Container — 1000L DEF tank for industrial/fleet use |