Fuel economy,
lower maintenance cost, and
reduced harmful emissions

How does hydrogen pre-mix help fuel economy? What is the reduction of exhaust emissions achieved with hydrogen-boost? And how hydrogen fuel enhancement helps reduce maintenance cost and extends the life of cars in general?

The answers to these questions can be found here, together with the explanation of the technology and the real-life results achieved:

Project “Antismog”

delivered in
for the City of Paris

reduced fine particulate matter
fuel economy realized
CO reduction in exhaust gases
decrease in nitrogen oxides

achieved robust results
with a number of different engines

and confirmed by the

Nomadeis | Mazars | Urban Lab

 L’ADEME en Île-de-France | Caisse des Dépôts Ile-de-France

Airparif | Paris & Co

Proven fuel economy
and reduction of harmful emissions

Ever-increasing fuel prices and rising air pollution are major concerns worldwide. Quite logically, countries and municipalities have been looking for innovative technological solutions.

In the framework of the urban experimentation led by Urban Lab of the City of Paris, in 2018 HHO France was selected to join a group of 10 innovators to participate in “Urban Air Quality Project”. The aim of the project was to reduce harmful emissions and reduce fuel consumption in a variety of combustion engines.

In 33 applications, such as of cars, vans, lorries, forklifts, power generators, and even a river boat, the hydrogen-boost equipment was installed.

Икономия на Гориво
Антисмог Водороден Генератор Б1 (HHO Bulgaria)

Hydrogen Generators
Antismog B1 (10th Generation)

Hydrogen generator B1 was designed on the occasion of a project with the City of Paris under the name “ANTISMOG“. The hydrogen generators were installed on multiple cars, vans, forklifts, electricity generators, and even a river boat.

The following results were achieved:

  • Reduction of fine particulate matter released into the atmosphere after installation of a hydrogen generator on different vehicles between 66% to 82%
  • Reduction of nitrogen oxides up to 5%
  • Fuel economy up to 21%

The evaluation of the results was carried out by a group of independent experts composed of the companies Nomadeis and Mazars, for a period of 12 months, from June 2018 to June 2019.

Led by Urban Lab of Paris & Co, it was funded by the city of Paris, L’ADEME en Île-de-France and Caisse des Dépôts Ile-de-France, and was implemented with the support of Airparif.

tested and approved by:

tested and approved by:

The Antismog project
has proven that

Hydrogen-boost technology
helps deliver
tangible improvements such as:

Икономия на Гориво - Водороден Генератор (HHO Bulgaria)

1. Improved fuel

Повишена мощност на двигателя - Водороден Генератор (HHO Bulgaria)

2. Increased Engine

Намаление на нагари в двигателя и Намалени вредни емисии - Водороден Генератор (HHO Bulgaria)

3. CO reduction
in exhaust gases

Намаляне на финни прахови частици

4. Reduction
of fine particles

Снижаване на азотни окиси -

5. Decrease
in nitrogen oxides

Понижени разходи за поддръжка на автомобиля - Водороден Генератор (HHO Bulgaria)

6. Lower maintenance

Project “Antismog” 2018-2019
France, Paris

(results realised)

How does hydrogen fuel enhancement work?

The efficiency of the most modern combustion engines hovers below 50%. For petrol engines, the upper limit of efficiency is closer to 35%. An incomplete or suboptimal combustion results in unburnt particles being rejected into the environment through the exhaust.

The addition of hydrogen improves the combustion process, allowing for a fuller fuel burn and thus resulting in reduction of unburnt fuel particles.

In addition to fuel economy, carbon deposits inside the engine are also significantly reduced.

This in turn inevitably leads to the following additional benefits for the vehicle from the installation of a hydrogen generator:

☑ Increased EFFICIENCY;

☑ Lower environmental impact;

☑ Lower operating costs;


If hydrogen is added to the air-fuel mix, the combustion of the fuel accelerates and so the engine manages to burn fuel more efficiently…

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As a result of a more complete, more homogeneous combustion, the engine EFFICIENCY is increased.

To perform the same work, the engine now needs less fuel, as the combustion is more efficient.

Due to the increase in efficiency, the speed increases and in order to return to the desired speed the driver liftsthe foot from the accelerator pedal.

With less pedal pressed and better fuel combustion, we realize a fuel economy that can reach up to 30%.

The addition of hydrogen to the fuel significantly improves the qualities of the combustion process. The effect is as if a better quality fuel is used – with a higher octane number. Quality fuels burn better and their consumption is lower. This also happens with poor quality fuels when hydrogen is added to the combustion process. There has been an increase in the energy emitted by the combustion of otherwise poor quality fuel.  Reduced fuel consumption is realized.


Due to challenging working conditions, especially in urban driving, traffic jams and low quality fuels, the carbon deposits form on the following parts:

  • Cylinder
  • Piston head
  • Piston rings
  • Exhaust valves and valve seats…
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As a result of this accumulated carbon deposits, the compression of the engine decreases, and both efficiency and power suffer.

When hydrogen is added to the engine, along with the incoming air, it enters into the heated combustion chamber in which the carbon deposits are present. Under the effect of high temperature, which acts as a catalyst, hydrogen (H2) binds to the carbon (C) and is transformedinto methane (C2H4). This methane is burning. There is a chemical process of removing the deposits from piston, cylinder, piston rings, exhaust valves and valve seats. Engines after the removal of the carbon deposits are more efficient and run with a reduced fuel consumption.

When driving the car mainly in urban conditions and with poor fuels, soot accumulates in the DPF of the modern diesel cars. Accumulated fine particulate matter (soot) reduce the permeability of DPF up to 30%. This creates reverse pressure for the engine and its efficiency drastically decreases. To overcome the created resistance, it is necessary to apply a higher power, for which more fuel is burned. Fuel consumption is thus increasing.

If hydrogen is added to the engine, the exhaust gases are cleaner – with significantly less soot and fine particulate matter. Once the hydrogen is added to the air-fuel mix, the DPF is unclogged, and the reverse pressure that interferes with engine performance is reduced dramatically.  With no resistance to exhaust gases, fuel consumption is also reduced.

The DPF filter itself has a certain design life, which depends mainly on how often it becomes blocked and how often the DPF regeneration process is performed. The fewer regenerations are initiated, the longer the DPF will serve. With the addition of hydrogen to the air-fuel mix, the useful life of the DPF can be extended by a factor of two or more, which represents significant savings in reduced maintenance costs.


When carbon depositsare accumulated on the engine cylinder and the piston rings, the operation of the compression rings and the oil rings is hindered. The oil is not scrapedeffectively and the rest of the oil on the cylinder turns into soot…

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From the accumulation of the large amount of gas, part of the exhaust gases enters the crankcase and oxidizes the oil. As a result, the lubricating qualities of the oil deteriorate, and this leads to faster wear and tear of the engine. The more worn engine consumes more fuel and is damaged more often.

When hydrogen is added to the air-fuel mix of the car, the deposition of carbon is drastically reduced, which leads to the preservation of the qualities of the oil – a well-lubricated engine works smoother and consumes less fuel.

Hydrogen Gas
“Antismog B1” Hydrogen Generator

Designed using a new, revolutionary technology that:

  • Improves fuel economy;
  • Improves the combustion of the air-fuelmix;
  • Reducescarbon deposits in the engine;
  • Increases engine life;
  • Increases mileage by up to 20% with the same amount of fuel;
  • Keep the engine oil cleaner for longer;
  • Reduces harmful emissions in exhaust gases;
  • Reduces the smoke in diesels by up to 3 times;
Антисмог Водороден Генератор Б1 (HHO Bulgaria)

Each hydrogen generator meets the current quality standards.
A conformity assessment procedure has been carried out for the current model.

Marked with European initials
for CE conformity.


B1 Description Buy Now