PEM hydrogen injection technology for heavy diesel engines.
A proton-exchange-membrane electrolyser produces hydrogen and oxygen from distilled water using DC power from the vehicle or genset electrical system. The gases are injected into the engine's air intake to improve combustion efficiency — without modifying the fuel system, after-treatment or ECU.
Engineered hydrogen injection technology — built, tested, priced, and delivered. Not a pitch, not a raise. A product.
That extends to how you buy it: see the price, buy one unit, trial it on your own fleet. No sales calls, no minimum order, no waiting on a quote to find out what it costs. Field evaluation on your own duty cycle remains the only valid basis for a commercial decision.
How the system operates
Sealed reservoir feeds the PEM stack. No electrolyte additives, no caustic chemistry.
DC current splits H₂O across a solid polymer membrane into hydrogen and oxygen.
Bunded gas/liquid separator removes moisture before injection.
Gases are introduced upstream of the engine air intake — no fuel system modification.
Faster flame propagation in the cylinder reduces unburnt hydrocarbons and particulates.
Optional CAN/Modbus output for fleet management and continuous performance reporting.
Why proton exchange membrane?
PEM electrolysis uses a solid polymer membrane rather than a liquid alkaline electrolyte. The result is a cleaner, more compact and more responsive unit — appropriate for mobile and vibrating environments. There is no caustic solution to refill, no risk of electrolyte spillage, and the unit can ramp output rapidly in response to engine load.
| Electrolyte | Purified water · solid PEM membrane (no KOH / NaOH) |
|---|---|
| Pressure storage | None — on-demand generation |
| After-treatment compatibility | DPF · SCR · EGR · AdBlue |
| Fuel system change | None |
| Separate power source | Not required — runs from the existing 12/24 V DC electrical system |
| ECU remap | Not required |
| Vehicle compatibility | Gasoline · Diesel · LPG · Hybrid |
| Manufacturing standards | Built to CE-certified manufacturing standards |
Thermal efficiency & hydrogen-assisted combustion
A long-form technical piece by Peter Griffiths (YBG Group International) on how a small H₂/O₂ fraction in the intake changes the burn, why steady-load engines respond most strongly, and what our own road-trial data shows.
Canonical technical references
- PEM vs alkaline electrolysis
Solid-polymer, pure-water cells compared with KOH electrolyte cells: gas composition, dosing control and engine integration.
- hydrogen combustion enhancement principles
Flame speed, ignition delay, premixed and diffusion burn phases, and why reported BTE and BSFC effects are conditional.
- engine applications for PEM/SPE oxyhydrogen
Diesel engines, generator sets, industrial furnaces, fixed industrial engines and marine propulsion.
- Browse all oxyhydrogen evidence reviews
Eleven source-bounded reviews of the published oxyhydrogen and HHO engine literature.
Combustion Enhancement provides the technical evidence and PEM/SPE oxyhydrogen research. Hydrogen Machines supplies the commercial PEM/SPE systems.