Field Results & Trial Data
Reported results only — from our own road trial, manufacturer road trials, and published dynamometer research. No "expected savings" claims; field evaluation on your own duty cycle remains the only valid commercial basis.
YBG road trial — 2.0 L turbodiesel SUV, Canberra–Sydney corridor, 2019–20
Operator: YBG Group (our own trial). Vehicle: 2.0 L turbodiesel SUV (brand intentionally not named). Equipment used was an earlier-generation 100 L/hr oxyhydrogen generator, 12 V DC, alkaline-cell type — included here honestly to demonstrate the combustion effect. The systems we ship today are PEM-based (no caustic electrolyte).
Highway: baseline 9.31 L/100km dropped to 6.73 L/100km post-install — a 27.7% improvementover a 292 km return run at ~110 km/h steady cruise.
Urban / mixed: 26.9% improvementover 972.5 km of logged urban driving. The gain was not immediate — it built progressively over roughly 1,000 km, consistent with progressive in-situ carbon cleaning of the combustion chamber and injectors.
Total logged distance: 1556.5 km.
| Date | Route | km | Litres | L/100km |
|---|---|---|---|---|
| 12 Oct 2019 | Canberra → Goulburn (hwy) | 96.0 | 8.94 | 9.31 |
| 12 Oct 2019 | Goulburn → Sydney (hwy) | 196.0 | 18.25 | 9.31 |
| 02 Nov 2019 | Canberra urban (mixed) | 142.3 | 12.80 | 9.00 |
| 23 Nov 2019 | Canberra urban (mixed) | 188.4 | 15.40 | 8.17 |
| 14 Dec 2019 | Canberra urban (mixed) | 214.7 | 16.10 | 7.50 |
| 11 Jan 2020 | Canberra urban (mixed) | 221.6 | 15.00 | 6.77 |
| 08 Feb 2020 | Canberra urban (mixed) | 205.5 | 13.50 | 6.57 |
| 29 Feb 2020 | Canberra → Sydney (hwy, return) | 292.0 | 19.65 | 6.73 |
| Total logged | 1556.5 | — | — | |
Manufacturer test data reports selected fuel-consumption reductions in the 15 – 20% range, reduced carbon accumulation and smoke, and improved combustion stability. Actual results vary materially with engine condition, duty cycle, load profile, fuel quality, installation and operating conditions. Field evaluation is required before commercial projection.
Manufacturer road trials — petrol vehicles
Reported by the manufacturer; method note: departure and return runs measured separately and averaged. Vehicle brands intentionally not named.
| Baseline | 7.2 L/100km |
|---|---|
| Post-install (avg dep/ret) | 6.1 L/100km |
| Reported improvement | −15.6% |
| Baseline | 9.9 L/100km |
|---|---|
| Post-install (avg dep/ret) | 8.4 L/100km |
| Reported improvement | −15.0% |
Manufacturer test data reports selected fuel-consumption reductions in the 15 – 20% range, reduced carbon accumulation and smoke, and improved combustion stability. Actual results vary materially with engine condition, duty cycle, load profile, fuel quality, installation and operating conditions. Field evaluation is required before commercial projection.
Dynamometer study — El-Kassaby et al. (2016)
El-Kassaby, M., Eldrainy, Y. A., Khidr, M. E., & Khidr, K. I. (2016). Effect of hydroxy (HHO) gas addition on gasoline engine performance and emissions. Alexandria Engineering Journal, 55(1), 243–251.
Context: small spark-ignition test engine at steady dynamometer load using an alkaline cell. Most relevant to steady-load duty cycles such as generator sets; results are not a prediction for any specific engine.
Manufacturer test data reports selected fuel-consumption reductions in the 15 – 20% range, reduced carbon accumulation and smoke, and improved combustion stability. Actual results vary materially with engine condition, duty cycle, load profile, fuel quality, installation and operating conditions. Field evaluation is required before commercial projection.
Measure it on your fleet.
Results vary materially with engine condition, duty cycle, load profile, fuel quality, installation and operating conditions. The only valid commercial basis is a controlled field evaluation on your own vehicles or gensets.
Related expert article: Thermal efficiency and hydrogen-assisted combustion — what the data shows.