LeefH2™ H-Power

Smarter Combustion. Better Performance. Cleaner Driving.

LeefH2™ H-Power brings advanced hydrogen-assisted combustion technology to passenger vehicles, commercial vehicles and other internal combustion applications with engines of 7.0 liters or less.

Developed by HNO International, LeefH2™ stands for Leveraging Energy Efficient Fuel with Hydrogen. Rather than replacing the vehicle’s existing fuel system, H-Power is engineered to enhance the combustion process by introducing precisely controlled trace hydrogen generated on demand from pure or distilled water.

Hydrogen’s combustion characteristics help accelerate flame propagation inside the combustion chamber, supporting a more efficient and complete fuel burn. The result is an engine optimization solution designed to improve fuel economy, enhance power delivery and reduce harmful exhaust emissions while helping limit carbon accumulation inside the engine. HNO states that H-Power can provide average fuel savings of 15–20% and increase horsepower and torque by more than 25% under applicable operating conditions.

Intelligent Hydrogen Generation — Only When the Engine Needs It

Unlike systems that require hydrogen to be transported or stored under pressure, LeefH2™ produces hydrogen and oxygen on demand using PEM hydrolysis.

The system operates using pure or distilled water and does not require highly corrosive acids or alkaline additives such as KOH or NaOH. Hydrogen is generated only when required, helping provide a practical and integrated approach to hydrogen-assisted combustion.

A smart 16-pin OBD-II interface communicates with the vehicle and uses engine operating information such as injection, ignition and timing data to coordinate hydrogen delivery. The control system itself requires only approximately 2 watts of operating power, minimizing unnecessary electrical load.

Designed for Everyday and Commercial Engines

H-Power is suitable for a wide range of gasoline, diesel, LPG and hybrid engines up to 7.0L, making it applicable to passenger vehicles, SUVs, pickups, vans, light commercial vehicles and other compatible engine-powered equipment.

In addition to fuel-efficiency benefits, hydrogen-assisted combustion is designed to promote a cleaner combustion environment. HNO states that this process can help clean carbon deposits within the engine while improving throttle response and reducing gear-shift latency or hesitation.

Key Benefits

• 15–20% average fuel-economy improvement according to HNO’s published H-Power specifications.
• More than 25% improvement in horsepower and torque under applicable operating conditions.
• Designed to support cleaner, more complete fuel combustion and lower harmful emissions.
• Hydrogen-assisted combustion helps address engine carbon deposits over continued operation.
• Designed to improve throttle response and overall driving smoothness.
• Compatible with gasoline, diesel, LPG and hybrid engines up to 7.0L.
• Generates hydrogen on demand instead of relying on onboard compressed-hydrogen storage.
• Uses pure or distilled water, without highly corrosive chemical additives.
• Smart OBD-II engine integration for precisely managed operation.
• Compact system with low-power electronic control.