Safety & compliance.
On-demand generation, no stored gas, four independent protections and a reversible installation.
Why is an on-demand hydrogen system inherently different from stored hydrogen?
Stored-hydrogen systems hold a pressurised gas inventory that exists whether or not the engine runs. A PEM enhancement unit holds none: it generates hydrogen and oxygen from purified water only while the engine is running, and the gas is consumed in the intake within moments of being produced. Stop the engine and production stops with it.
- No cylinder, tank or accumulator — no stored gas at rest
- Vibration-sensor start / stop: production only while the engine runs
- Water-shortage alarm
- High-TDS water-quality alarm
- Over-temperature shutdown
- Pure-water PEM stack — no caustic KOH / NaOH electrolyte
- Stored hydrogen
- None
- Electrolyte
- Pure water
- Supply
- 12 / 24 V DC
- Water
- TDS ≤ 5 µS/cm
Four independent safeguards.
Vibration-sensor start / stop
The unit only produces gas while it senses engine vibration, so it cannot run with the engine off. Sensitivity is adjustable during commissioning.
Water-shortage alarm
Alerts before the stack can run dry, protecting the membrane and stopping production.
High-TDS alarm
Flags out-of-spec water before conductivity damages the stack. Resolve by replacing the resin filter and refilling with purified water.
Over-temperature shutdown
Cuts production if stack temperature exceeds its operating window, for example after prolonged high ambient operation.
What sits with the buyer.
Installation by a qualified technician. We supply hardware, wiring diagrams and intake-injection guidance. Fitting, mounting location and commissioning are performed by your own technician or workshop.
Site and fleet rules. Mine sites, ports, depots and marine operators often have their own modification approval process. Clear the fitment with the site or asset owner first.
OEM warranty and insurance. Notify your insurer and, where the engine is under manufacturer warranty, your OEM dealer. The installation is reversible if removal is required.
Water quality. Use purified water at TDS ≤ 5 µS/cm and replace the resin filter every 6–9 months.
Documentation questions: office@combustionenhancement.com or +61 449 703 635.
Regulatory note for US and other buyers.
Laws governing aftermarket devices fitted to on-road vehicles vary by country, and within the US, by state. In the US specifically, some states — including California, via the California Air Resources Board (CARB) — apply additional requirements to aftermarket parts that may affect a vehicle's emissions systems, separate from federal requirements. These rules can differ significantly between states and can change over time.
We do not make any claim about this product's compliance status under any specific state or federal regulatory framework. Buyers are responsible for confirming the applicable requirements in their own state or country before installing this product on an on-road vehicle. Off-road, marine, agricultural, mining, and stationary generator applications are typically subject to a different regulatory framework than on-road vehicles — buyers should still confirm applicable local requirements for their specific use case.
If you're unsure whether this applies to your situation, consult your state's environmental/transportation regulatory agency (in California, the California Air Resources Board) or a qualified professional before purchase or installation.
Where the paperwork lives.
Questions.
Is hydrogen stored on board?
- No. There is no cylinder, tank or accumulator anywhere in the system. Hydrogen and oxygen are generated only while the engine is running and are drawn into the intake immediately, so there is no stored gas inventory at rest.
What protections are built into the unit?
- A water-shortage alarm, a high-TDS water-quality alarm, an over-temperature shutdown and a vibration sensor that starts and stops production with the engine. Sensitivity of the vibration sensor is adjustable at commissioning.
Does fitting a unit affect vehicle roadworthiness or insurance?
- The installation is non-destructive and reversible, and no change is made to the engine, fuel system or after-treatment. Even so, we ask fleet operators to notify their insurer and, where a vehicle is under manufacturer warranty, their OEM dealer before fitting. We make no roadworthiness or compliance determination on your behalf.
Who is allowed to install it?
- A qualified technician: a heavy-vehicle workshop, automotive or diesel technician, marine engineer or genset fitter. We supply hardware, fitting documentation and remote support only — there is no installer network.
What water must be used?
- Purified or deionized water at TDS ≤ 5 µS/cm, polished by the resin filter. Tap, rain, bore or mineral water will trip the high-TDS alarm and shorten stack life.
Is this product approved for on-road use in the United States or a specific state?
- We do not make any claim about this product's compliance status under any specific state or federal regulatory framework. Laws governing aftermarket devices fitted to on-road vehicles vary by country, and within the US, by state. Buyers are responsible for confirming the applicable requirements in their own state or country before installing this product on an on-road vehicle.
Do the same rules apply to off-road, marine, agricultural, mining and stationary generator use?
- Off-road, marine, agricultural, mining and stationary generator applications are typically subject to a different regulatory framework than on-road vehicles — buyers should still confirm applicable local requirements for their specific use case.
Continue reading.
Hydrogen combustion enhancement
What it is, how PEM gas reaches the cylinder, and what it does not do.
Engine performance improvement
Flame speed, burn completeness and load response on diesel engines.
Fuel efficiency
How to baseline and measure litres per 100 km or litres per hour.
Emissions reduction
Soot, particulate and unburnt-fuel behaviour, and how to test it.
Visible smoke reduction
Smoke opacity findings per study, with the NOx trade-off disclosed.
Remote-site fuel logistics cost
Landed cost versus pump price, and why the same percentage moves more money.
Generator-set classes
Camp, prime, standby, rental, telecom, irrigation and ship's service sets compared.
Idle & part-load duty cycles
Reefers, camp gensets and high-idle plant — where the literature reports most room.
Hydrogen with biodiesel blends
Per-study findings for hydrogen enrichment on biodiesel, NOx disclosed.
Installation guide
Nine-step fitting sequence: mounting, wiring, gas line, commissioning.
Troubleshooting
Alarms, low gas output, water quality and no-start diagnostics.
Case studies & field results
Published operator data and trial methodology.
Compare PEM systems
A-450 to DH-Power side by side: displacement, output, current draw.
Does it actually work? Evidence review
The published literature, the FTC/EPA history and the ACL context.
How it works
Gas path and established physics, explained with diagrams.
PEM vs alkaline
Membrane on water versus caustic KOH: servicing, purity, cost.
Sizing combined gas
Why PEM and alkaline gas-volume benchmarks are not interchangeable for ICE sizing.
Four hydrogen technologies
Enhancement vs H2ICE vs fuel cell vs chemical generation.
Compared with Hydrogen Fuel Systems
Honest comparison with the Perth-based Gen alkaline range.
Compared with H2i Technology
Hardware, pricing and evidence transparency versus the Victorian supplier.
Compared with dynaCERT HydraGEN
PEM versus alkaline, published price versus dealer quote, Verra versus ACCU.
Compared with HYDI
The South Australian manufacturer: UniSA testing, field history and quote path.
AU installation, warranty & safety
VSB 14 and VSB 6, ACL guarantees and documentation to keep.
Mining fleets
Haul trucks, dozers, drill rigs and site gensets: unit selection and dust.
Marine
Workboats, charter, fishing and ship's service gensets — no gas stored aboard.
Agriculture
Tractors, headers, pump sets and farm trucks across seasonal duty.
FAQ
Answers on fitment, water, warranty, freight and duty cycles.