Geneva (switzerland), 20. Marz 2009 – cars that are powered by compressed air: at this initially abundant exotic sounding idea, the french company MDI (motor development international) works not less than 50 engineers. MDI chef guy nègre, originally engine designer for formula 1, is dedicated to the topic since the company principles in 1991. To the latest vehicles of MDI of the airpod and the oneflowair, both of which were presented at the geneva car salon.
Gasse expansion engine as the basis
At the airpod, compressed air is pressed into a 175 liter memory on 350 bar. The compressed air is then supplied to a gas expansion motor. Here, the pistons are not moved by the energy of combustion, but by expanding the compressed air. As with an internal combustion engine valves provide valves for the controlled gas exchange: the inlet valve is driving the compressed air. After the valve has closed, the air expands up to a certain residual prere before exceeding it through the exhaust valve.
FUNF PS from 180 cubic
At the airpod, the displacement is only 180 cm3. At 18 bar residual prere, the engine supplies at least 5 hp and a torque of 15 newton meters. The highest speed is indicated at 70 km / h. A compressed air charge ranges according to the manufacturer for 220 urban kilometers. Then you can recharge the store in one and a half minutes.
Airpod: only about two meters long four-seater
The airpod measures only 2.07 meters in the long, and the width is less than 1.60 meters than about the smart fortwo. At 1.74 meters, the vehicle is high than so many full-grown SUV. Through the body of glass fibers and polyurethane foam, the oscillation weights 220 kg – so also the modest 5 hp performance. Despite the small long, airpod has four seats on which three adults and a child find space. Something like a crumple zone is barely available, unfalls are apparently not provided in the airpod world.