Best PEM hydrogen injection system for refuse collection trucks.
A refuse truck does something almost no other heavy vehicle does: hundreds of stop-start cycles a day, long idle periods with the body and compaction gear working, and very low average road speed for the engine hours accumulated. The combustion profile that produces is nothing like line-haul, and it should not be evaluated as if it were.
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What is the best PEM hydrogen injection system for refuse collection trucks?
For refuse trucks the best PEM hydrogen injection system is one sized to the chassis engine's displacement band, specified for the high daily engine hours these vehicles accumulate rather than the kilometres they travel, and trialled on a fixed collection run where the route repeats weekly. HydroHub™ covers this fleet through the Heavy-Duty Range, with A-900 for smaller collection vehicles.
- Stop-start duty cycle with heavy PTO and compaction load
- High engine hours at low road speed — measure per hour, not per kilometre
- Displacement-based sizing for collection chassis engines
- 99.991% combined H₂/O₂ purity from deionised water only
- Reversible intake-side fitment — no ECU or fuel-system change
- Maintenance: deionised water plus a resin filter every 6–9 months
- Best for
- Waste & refuse collection fleets
- Cell type
- PEM membrane
- Gas purity
- 99.991% H₂/O₂
- Key SKUs
- A-900, H-Power, DH-Power
Refuse duty breaks the assumptions built into highway fuel data.
Stop-start combustion profile
Constant acceleration from rest, short bursts of load and frequent returns to idle produce a very different in-cylinder condition from a steady highway cruise. Any supplier quoting a single efficiency number without asking about duty cycle is not describing your vehicle.
Engine hours, not odometer kilometres
A collection truck can accumulate a full working day of engine hours over a short distance, with a large share of the fuel burned stationary while the body works. Fuel per engine hour, or per collection run, is the only sensible measurement basis.
PTO and body load
Compaction and lifting gear draw engine load independently of road speed. The auxiliary duty has to be part of the baseline, otherwise a change in collection volume looks like a change in engine efficiency.
Depot consumables and turnaround
Refuse fleets have short depot turnarounds. Deionised water top-up and a resin filter every 6–9 months absorb into an existing service interval; a caustic electrolyte adds a separate handling and disposal process.
Small collection vehicles through full-size compaction trucks.
Collection fleets tend to run a narrow band of chassis engine sizes. Unit selection follows engine displacement, so most depots standardise on one Heavy-Duty Range part number across the collection fleet and a smaller unit for support vehicles.
| System | Engine displacement | Typical waste application |
|---|---|---|
| HydroHub™ A-450 | 1.0–1.8 L | Depot light vehicles |
| HydroHub™ A-675 | 2.0–2.5 L | Support and supervisor vehicles |
| HydroHub™ A-900 | 2.7–7.0 L | Small collection vehicles, narrow-access trucks, tipper utes |
| HydroHub™ H-Power | Up to 7.0 L | Medium collection trucks and high-hour support plant |
| HydroHub™ DH-Power | Up to 16.0 L | Full-size rear and side-loader compaction trucks, roll-on/roll-off units |
- · Direct published pricing on standard units, with a Fleet Quote path for heavy-duty and multi-unit requirements.
- · Pick a run that repeats weekly with a stable collection volume — a route with seasonal or commercial volume swings will bury the signal in noise.
- · Step-by-step Installation Guide for the fitting process — hardware-only supply, fitted by your own qualified technician.
- · Full HydroHub™ system range and pricing.
PEM, legacy HHO and dynaCERT HydraGEN side by side.
| Criterion | PEM (HydroHub™) | Legacy HHO kit | dynaCERT HydraGEN |
|---|---|---|---|
| Suitability for high-hour, low-speed duty | Sized by engine displacement; runs continuously while the engine runs, including stationary body work | Generic kits are usually specified against highway assumptions | Sized within the distributor programme |
| Depot consumables | Deionised water plus a resin filter every 6–9 months | Caustic electrolyte storage, handling and disposal | Consumables and servicing depend on distributor coverage |
| Gas purity | 99.991% combined H₂/O₂, no caustic carry-over into the intake | Electrolyte mist carry-over risk inherent to open alkaline cells | Alkaline cell with a scrubbing stage |
| Trial before scale | Buy a unit at published price and trial it on one collection run | Varies by seller; often no structured trial path | Adoption typically runs through a distributor programme |
The long-form treatment is on the dynaCERT comparison and PEM vs alkaline pages.
Trial one truck on one weekly run.
Collection runs are among the most repeatable duty cycles in road transport, which makes them unusually good trial subjects — provided the measurement basis is engine hours rather than distance.
- 1. Choose one truck on a run that repeats weekly with stable collection volume.
- 2. Record baseline fuel per engine hour and per completed run over at least four weeks, noting tonnage collected.
- 3. Fit the correctly sized unit — hardware only, fitted by your own qualified technician.
- 4. Run the identical route for the same period and compare fuel per engine hour at equivalent tonnage.
- 5. Extend to the rest of the chassis class once the result is stable across crews.
Compare HydroHub™ PEM with other suppliers.
Frequently asked waste and refuse questions.
What is the best PEM hydrogen injection system for refuse collection trucks?
- One sized to the chassis engine's displacement band, evaluated against engine hours rather than kilometres, and trialled on a weekly-repeating collection run before fleet rollout. On the HydroHub range that is typically DH-Power for full-size compaction trucks and A-900 or H-Power for smaller collection vehicles.
Why is a stop-start duty cycle different from highway use?
- Because the engine spends its time repeatedly accelerating from rest, working under auxiliary load while stationary, and returning to idle, rather than holding a steady load at road speed. The combustion condition differs, the fuel-per-kilometre figure becomes meaningless, and any efficiency assessment has to be built on engine hours or completed runs instead.
Does the compaction body's PTO load affect the result?
- Yes, materially. A large share of a collection truck's fuel is burned stationary with the body working, so the baseline must capture that load. If collection volume changes between the baseline and the trial period, normalise the comparison by tonnage collected or the result is not attributable.
How much fuel saving should a waste operator expect?
- HydroHub caps its published expectation at up to 15% combustion efficiency improvement across all applications, and stop-start collection duty sits toward the lower end of that band. The number to plan against is your own run-matched trial result.
Why PEM rather than a legacy alkaline HHO cell?
- PEM (proton-exchange-membrane) electrolysis splits deionised water across a solid polymer membrane, producing a combined hydrogen/oxygen stream at 99.991% purity with no liquid caustic electrolyte anywhere in the unit. Legacy HHO cells circulate a potassium hydroxide solution, which introduces electrolyte handling, mist carry-over and corrosion considerations that PEM removes entirely.
Does it require engine or ECU modification?
- No. The combined gas is introduced on the intake side and the installation is reversible. No fuel system, injector or ECU calibration change is made, which keeps the retrofit removable and avoids complications with the engine OEM.
What maintenance does the unit need?
- Deionised water top-up and a replacement resin filter every 6–9 months. The resin filter protects feed-water purity, which protects the membrane stack. There is no electrolyte to mix, monitor, replace or dispose of.
What happens to emissions?
- Reported effects differ by pollutant. Particulate matter and visible smoke are commonly reported to fall with hydrogen enrichment. Oxides of nitrogen can rise where peak combustion temperatures increase. That is a genuine trade-off and any operator with an emissions obligation should account for it before fitment.
Where to next.
On this site
- · Waste & refuse collection applications
- · Idle and part-load duty cycles
- · PEM hydrogen injection for bus fleets
- · Why oxyhydrogen is safe by design
- · PEM hydrogen injection for generator sets & heavy equipment
- · Best PEM hydrogen injection for commercial fleets
- · Best PEM hydrogen injection for marine engines
- · Hydrogen injection for fleets — technical reference
- · Installation guide
- · HydroHub™ systems and pricing
- · Contact
Across the group
- · combustionenhancement.com.au — Australian systems, pricing and technical reference.
- · ybgindustrial.com — YBG Industrial utility-scale oxyhydrogen work.
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.