Air Compressed Car MDI - Energetic Revolution

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MDI (Motor Developement International) is a project initiated and directed by Guy NEGRE the CEO of the company, this mechanical engineer started his career with researches on engines’ efficiency. Among his numerous creations, we particularly remember a rotary distribution device for a R8 GORDINI which produced 152 HP at 11 000 rpm, his light aircraft engines (SACMA) and also the development of a 3.5 liters W 12 engine, for Formula 1 races in the 80s. Throughout his career Guy NEGRE, has designed nearly one hundred engines.

Having in mind the protection of the planet, Guy NEGRE has then concentrated his efforts towards the development of zero pollution engines and created MDI in 1991.The aims of this company are to promote and develop ecological energies; conceive and produce non-pollutant vehicles and systems. Its study office develops new technologies and innovative production methods. MDI is the owner of numerous patents pertaining to the improvement of its compressed air engines and their technical environment; these patents are protected in 127 countries.

The fruit of more than ten years of researches, MDI’s mono-energy engines operate on a totally eco-friendly basis using compressed air stored at high pressure.

These engines are used on vehicles designed for urban use, backup generators or industrial tractors. They are particularly tailored for applications where the torque has an importance and when an averagely moderate power is needed.

Together with the zero pollution engines, some other versions having the same technical basis have also been created by MDI, they are known as the dual-energy engines. In the case of dual-energy engines, an energetic adjuvant (petrol, diesel, oil, alcohol or gas) is burned in an external continuous combustion chamber. These dual-energy engines have more range and the amount of toxic gases released is very low.

Less than two Liters per hundred Kilometers (at 90 Km/h for MiniFlowAIR)
Zero NOx,
3 to 4000 times less unburned HC compared to conventional engines.
3 times less C02 emissions in comparison to classic engines.

These engines will be fitted on production generators. Regarding the vehicles that will be operated using these engines; there will be no pollution when used in towns as they would be operating on the ‘compressed air mode’ only. On the motorway these engines provide a good range thanks to the combustion of the liquid or gas adjuvant.

Finally based on this new technology, MDI has imagined and developed a « thermodynamic theory » which will give rise to further improvement in the years to come, thus creating a real energetic revolution.

All MDI engines have an active chamber and are protected worldwide by patents. They can be used for a wide range of applications, varying from 4 to 75 hp. Hybrid cars will be an alternative for users who need more autonomy, greater travel at 100 kms.

Fifty engineers and technicians work on the compressed air vehicles with the support of TATA Motors, the exclusive licensee for MDI’s technologies in India since 2007. The agreement provides that TATA will support the technologies final development and optimization for their use in India.

( Comment of Oscar Granda )

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The principle of this engine (zero pollution) is simple: to reverse the work of an air compressor machine. Instead of using the rotational energy -from an electric motor- to compress air, it uses compressed air to produce rotational energy in the engine. However, one big problem was the need to store air at high pressures that would be very dangerous potential accidents. Recently, MDI has developed technology more secure, they promise to achieve in the next years, a real energy revolution.