Alternative Transport Concept
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A new type of rotating motor which can be used with compressed air!
Régis, our collaborator has invented this revolutionary poly-carburant motor « MRAP ».
He speaks about it : the energy and pollution problems are always increasing and today it is an obligation to find solutions in matter of energy. In that field the alternative energies, clean and renewable –Water energy- Sun energy (Photovoltaic cells) and Eolienne (Wind-energy) produce electricity as well as batteries which junction with hydrogen. Alternatives in order to replace motor-fuel are already existing such as Colza oil (Society Agrogen from Mr Knopf in Fribourg –CH). And I have thought about using compressed air in order to feed my new rotating motor. A leader company works about that type energy. It is the Society MDI from Mr Nègre in Carros (Department 06) in south of France. This Society from Group MDI which holding is in Luxemburg is working since more than ten years at the development of an original taxi (cab) which conventional motor is adapted to this type of energy. But today no vehicle responding to their commercial characteristics is available, because the thermodynamic must be exploited and this and this not easy on old basis…
My invention is a rotating motor original, no type Wankel, no turbin type, no type quasi-turbine. It can work with gas or fuel but it is especially well adapted to work with compressed air. After several searches, I have found about 50 patents regarding rotating systems but no one looks like my motor.
My rotating blade motor « MRAP » can be used on transport vehicles because it functions like an electric-motor. It doesn’t need a starter, has no valve, no push rod, no crankshaft, no piston.
When the vehicle stops, the motor stops and it starts again without any mechanical effort. The reverse motion of the vehicle is done through injection of compressed air through exhaust box. In this configuration the motor has a bad efficiency. Air Consummation (higher and low speed) but the function reverse motion (back-gear) doesn’t happen often. This motor is constituted of two rooms out of phase of 180° (degrees) regarding to the axis of the motor. The admission, the decompression and the outlet are done each half round in each room. While one room is in admission, the other one is in outlet. I call this mechanism one other Driving Unit. This driving unit cannot be constituted of less than two rooms so that the rotative motor car function. During one round of this unit there are 4 decompressions of the compressed air. While the vehicle is breaking the motor can compress air in a small reservoir.
This rotating motor has not lot trepidation and the couple is fast linear and this allows no need of flywheel. In order to increase the performances of it, it is possible to warm the compressed air during the admission and/or in the decompression room. The coupling of several driving units on the same motor axis with a dephasing of these units distributed on 360° (degrees) allows to regulate the cycle and the couple motor but most of all to win power.
And I have already said, the motor regime is low. This low regime is due to the utilisation of a compressed gas. As the compressed air is injected into the motor, the decompression of this air needs some time to dilate at cubic temperature variation. The quality of this motor is in its couple, its power, its regularity of cycles (trepidation) and its moving masses.
Rotating motor : regime of about 3500 RPM. Possibility of working at 5000 RPM but the lost of energy is big. Its mass is very low (can be constructed in plastic) just with compressed air.
This motor can be used on shearers, transport vehicles and instead of electric motors.
It is possible to reach 100 Horses with addition of driving units. A very good efficiency.
It’ s higher as a motor with piston.
- for 1kg fuel, we have 40MJ
- for 1kg batteries, we have 200kJ
- for 1kg compressed air 300 bars, we have about 100kJ
Conclusion: the energetic efficiency of compressed air is bad.
An electric motor consumes about 20Kwh for 100 km that means about 70 MJ energy.
For the same efficiency the motor needs a reservoir of compressed air of 700 litters at 300 bars. In order to reduce the reservoir we must reduce the consummation we must reduce the total mass of the vehicle. The total mass should not be higher than 700 kg.
The speed should not be higher than 60 km/h.
Example : For a SMART equipped with a 300 L reservoir at 300 bars, you can drive 100 km with an average speed of 60 km/h.
Conclusion: This vehicle is good for the town-drive.
Where can we find the compressed air?
With a compressor equipped with an electric motor of about 5 kw we can feel a reservoir of 300 litters in 4 hours = 1.92 € full to drive 100 km (EDF price).
The reservoir must be fabricated with fibre of aramid and carbon plaited and protected by a thin coat of fibre-glass as well as resin.
The motor can be used with two energies on the same time for exemple compressed air and GNV, GPL or others.
Exemple: Speed under 70 km/h in be-energy, compressed air + gas and higher than 70 km/h only with gas. This motors easy to be installed or reinstalled. The cost of prime material is low and we don’t need to have qualified persons for the installation. By Régis
Par ailleurs avec Philippe motoriste à double compétence -thermique et électrique- nous avions inventé, mis au point et présenté au Mondial de l’Automobile en 1994 un moteur électrique -courant continu, rotor plat et aimants permanents– à faible encombrement (poids et volume divisés par 3 !) et haut rendement (94% soit +25% qu’un moteur bobiné excitation série sur les prototypes assemblés de façon artisanale) de 10 kW nominal avec une technique d’assemblage brevetable permettant une forme intéressante pour s’intégrer dans une roue de scooter par exemple. Ce faible encombrement associé à un pilotage électronique peu encombrant, fiable, simple et peu onéreux pourrait convenir pour un montage sur des petits véhicules écologiques à traction électrique et autonomie prolongée par un générateur à moteur thermique optimisé par le procédé décrit précédemment. Il est également possible de réaliser un couplage en parallèle avec le moteur rotatif !
Ceci afin de faire la démonstration d’un engin de haute qualité environnementale.
Pour réaliser cette utopie nous pouvons proposer, moyennant le dépôt d’une caution, une expérimentation conjointe ou même un confié pour examen, études de faisabilité ou réalisation de pré-série…
Voir schéma, cliquez ci-dessous :
MOTEUR ROTATIF Bi-Energie avec Moteur