Decarbonising Fleets Without Replacing the Fleet
Saarthi’s hydrogen-diesel hybrid retrofit solution, powered by GreenLabs engineering and verified by GreenVision telemetry, helps fleet operators achieve measurable fuel savings and emission reductions.
Ideal for long-haul trucks, city buses, staff transportation fleets and last-mile commercial vehicles.
- Works on existing diesel engines
- Improves km/l across duty cycles
- Verified via real-time data
- Savings validated through GreenVision
- Zero CapEx option available via DaaS
GreenDrive™ — Hydrogen Retrofit for Trucks & Buses
Improved Fuel Economy
10–25% improvement in km/l (duty cycle dependent) achieved through cleaner, more complete diesel combustion.
Reduced Emissions
Significantly lower PM, CO, and HC emissions, reducing your fleet's carbon footprint and urban pollution.
Enhanced Performance
Reduced soot formation (cleaner engine internals) and improved throttle response for smoother, more stable operation.
Key Benefits:
GreenDrive™ injects controlled volumes of hydrogen-oxygen (H-Oxy) into the combustion chamber, enabling cleaner, more efficient burning of diesel.
- 10–25% improvement in km/l (duty cycle dependent)
- Reduced soot formation (cleaner engine internals)
- Lower PM, CO, HC emissions
- Improved throttle response & smoother performance
- Consistent performance on highways & mixed-road conditions
Supported Vehicles:
14T–55T trucks
City & intercity buses
School/staff transport buses
Light commercial vehicles
Refrigerated trucks
Multi-axle trailers
Hydrogen Integration Designed for Fleet Realities
Hydrogen Generated On-Demand
No high-pressure storage. Safe wet electrolyser generates H-Oxy gas only when the engine is running.
Optimised H-Oxy Injection
A controlled volume of gas is infused into the air intake, precisely adjusted based on engine load and RPM via the ECU.
Cleaner Combustion
Hydrogen acts as a combustion catalyst, making diesel burn more efficiently and completely, leaving minimal soot.
Real-Time Verification
GreenVision telematics measures pre- and post-retrofit fuel consumption, validating savings and CO₂ reduction instantly.
System Flow:
Electrolyser Injection Module Engine Combustion GreenVision Data
Verified Gains Across Different Duty Cycles
Savings depend on terrain, load, idle ratio and driving patterns. GreenVision provides real-time measurement and verification (M&V) on your specific fleet.
Sample Observations:
Long highway routes: 5–20% fuel savings
Mixed city-highway: 6–15% fuel savings
High-idle vehicles: 8–20% fuel savings
Cleaner combustion leads to lower soot accumulation and more stable engine performance.
Cleaner Combustion = Lower Emissions
Hydrogen-enriched combustion reduces soot and unburnt hydrocarbons, lowering PM and CO levels significantly, improving air quality, and meeting compliance goals.
40–90%
Particulate Matter (PM) Reduced
Significant
CO & HC Reduction Observed
*Observed reductions based on certified DG set and on-road test results.
Choose How You Want to Deploy
A. CapEx Purchase (Own the System)
A single, one-time payment for the hardware installation. Includes GreenVision monitoring and a standard 12/24-month warranty.
- One-time cost
- Hardware ownership
- Standard warranty
- Full GreenVision monitoring
B. DaaS — Decarbonisation-as-a-Service
Zero CapEx. You pay a monthly fee that is less than your guaranteed monthly fuel savings. Saarthi handles everything.
- Zero CapEx
- Monthly fee < monthly fuel savings
- All maintenance & spares included
- Guaranteed performance & savings verification
Fleet-Proven, Safe and Certified
Certified By:
CE • UL • ROHS • EMC • ISO 9001
Integrated Safety Features:
- No high-pressure hydrogen storage
- Auto shutdown on anomaly (temp, flow)
- Engine-load-based control system
- Automotive-grade wiring & enclosures
Compatible With Most Diesel Engines
Our system is designed for broad compatibility, allowing fast, non-invasive installation on most heavy-duty diesel platforms.
Supported Engines:
- BS-III to BS-VI
- 4-16L displacement
- Tata, Leyland, BharatBenz
- Volvo, Scania, and more
Installation Details:
Installation Time:
4-6 hours per vehicle
Minimal downtime ensures fleet operational continuity.
Technicians:
Certified Saarthi Experts
Installation is performed by our specialised, certified service team.
The Complete Fleet Decarbonisation Loop
GreenMentor
Assess fleet & duty cycles
GreenLabs
Install GreenDrive™ hydrogen system
GreenVision
Verify km/l & CO₂ reduction in real-time
Ready to Improve Fuel Efficiency Across Your Fleet?
Share your routes, engine types and monthly diesel usage for a custom savings estimate.