Emissions reduction.
What more complete combustion can affect, what stays untouched, and how to test it without overstating the result.
For HHO emissions reduction data — including hydrogen combustion CO reduction and oxyhydrogen NOx and smoke-opacity questions — we point to what is actually published: the dynamometer study cited on field results (El-Kassaby et al., 2016, Alexandria Engineering Journal 55(1) 243–251) and the category overview on hydrogen combustion enhancement. We publish no emissions percentage of our own. The same evidence set is read from the fuel side in hydrogen fuel efficiency evidence and from the in-cylinder side in engine performance.
How does hydrogen enhancement relate to emissions?
Soot, particulate and unburnt hydrocarbons are products of incomplete combustion. By raising flame speed and burn completeness, hydrogen-oxygen enhancement targets that incomplete fraction. Factory after-treatment — DPF, EGR and SCR — is left entirely intact, and the unit is not an emissions-control device or a compliance product.
- Targeted: products of incomplete combustion (smoke opacity, particulate, unburnt HC)
- Untouched: DPF, EGR, SCR, ECU calibration and fuel system
- The unit itself has no combustion process and no exhaust stream
- No compliance, certification or defect-clearance claim is made
- Verify with an opacity meter or gas analyser before and after fitting
- After-treatment
- Unmodified
- Gas source
- Purified water
- Onboard storage
- None
- Reversible
- Yes
How to test an emissions change.
- 1. Record a baseline with the same instrument and technician you will use afterwards — free-acceleration opacity for road diesels, or analyser readings at fixed load points for gensets.
- 2. Note engine temperature, ambient conditions and fuel batch; all three move readings.
- 3. Fit and commission the matched unit per the installation guide.
- 4. Allow normal operation to settle, then repeat the identical test procedure.
- 5. Report absolute readings and test conditions — not percentage claims without the underlying numbers.
Documentation we do hold is listed on certifications, and published operator data on field results. To model fuel economics at an assumption you choose, use the fuel savings calculator.
What we will not claim.
We do not claim regulatory compliance, emissions certification, or that fitting a unit will clear a defect notice or pass a specific test regime.
We do not publish emissions percentages that we cannot tie to a named operator, a stated instrument and a stated test condition. Where such reports are cleared for publication they appear on field results.
The specific sub-topic of visible exhaust smoke — what independent studies report on smoke opacity, per study, and the NOx trade-off those same studies report — is covered in depth on visible smoke reduction.
Fleet operators who want emissions measured alongside fuel data should run a structured fleet trial.
No projected, typical or expected fuel-saving figure is published. Actual results vary materially with engine condition, duty cycle, load profile, fuel quality, installation and operating conditions. A controlled field evaluation on your own equipment, with baseline data captured before installation, is required before any commercial projection.
Questions.
Which emissions does more complete combustion affect?
- Products of incomplete combustion — smoke opacity, particulate and unburnt hydrocarbons — are the outputs most closely tied to burn completeness. Any change should be verified with an opacity meter or gas analyser on your own engine before it is reported.
Does the unit interfere with a DPF, EGR or SCR system?
- No. Nothing is removed, bypassed or reprogrammed. The gas enters through the intake air path only, and the exhaust after-treatment continues to operate exactly as delivered by the engine manufacturer.
Does the unit itself produce emissions?
- The unit produces hydrogen and oxygen from purified water and consumes electrical power from the engine's alternator. There is no combustion inside the unit and no exhaust stream from it.
Can this be used to pass an emissions test or defect notice?
- We make no compliance claim. The unit is a combustion aid, not an emissions-control device, and it does not certify an engine against any standard. Consult your regulator or testing authority for anything test-related.
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.
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.
Safety & compliance
On-demand gas, no storage, alarms, shutdowns and reversibility.
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.