Two modules, the full spectrum of pollutants
EXEL combines an electrostatic module and a photocatalytic module in a single compact unit installed in the vehicle. There is no need to draw power from (or connect to) the bus's electrical system — solar panels on the vehicle's roof are enough.
The path of air through the unit
fan
module
module
clean air
Electrostatic module
Captures particulate matter (PM) across its entire size range — from coarse particles to the finest fractions produced by the wear of tyres, brake pads and road surfaces, as well as those coming out of exhaust pipes.
Photocatalytic module (TiO2 + UV-C)
A TiO2 layer activated by UV-C light neutralises nitrogen oxides, carbon monoxide and hydrocarbons, converting them into harmless substances. It is the same mechanism as in a car's catalytic converter, but without the need to supply energy from the heat of exhaust gases.
Health first — the bus becomes not zero-emission, but SUB ZERO
The most important effect concerns residents' health: the reduction of particulate matter (PM) and exhaust gases (nitrogen oxides, carbon monoxide and hydrocarbons), which directly contribute to respiratory and cardiovascular diseases. Meanwhile, a vehicle fitted with EXEL actively cleans the air around it. And by harnessing the daily operation of a public transport fleet — in which each vehicle travels an average of two hundred kilometres a day over a dozen or so hours of service — we achieve a scale of pollution removal in cities that is unmatched by anything else. All of this without having to build new infrastructure, instead making clever use of what already exists. A smaller carbon footprint is an added benefit. And all of this for an outlay that is only a fraction of the price of a single bus.
A new bus is a huge environmental debt.
EXEL is a fraction of it
Manufacturing, servicing and recycling a single city bus accounts for around 113 to over 140 tonnes of CO2 — the most for electric buses, mainly because of the battery. E-buses also need charging stations on top of that.
The unit needs no disposal. After around a decade of operation it can be refurbished, and it starts cleaning the air from day one, so its environmental debt is practically zero.
Show data as a table
| Electric | Plug-in hybrid | Hybrid | Conventional | |
|---|---|---|---|---|
| Body | 45.5 | 45.5 | 45.5 | 45.5 |
| Chassis and frame | 45 | 45 | 45 | 45 |
| Conventional powertrain | — | 8 | 8 | 10.3 |
| Electric powertrain | 9.2 | 7.3 | 7.3 | — |
| Lithium-ion battery | 28.3 | 10.2 | 8 | — |
| End of life (recycling) | 14.1 | 13 | 12.6 | 12.6 |
| Total | ≈ 142 | ≈ 129 | ≈ 126 | ≈ 113 |
Polish Patent No. 245400granted on 16 July 2024
See where else EXEL proves its worth
Go to applications →
Air purification systems
for all traffic-related pollution.