MDI Air Car - Compressed Air Technology

Articulated con-rod

The MDI con-rod system allows the piston to be held at Top Dead Centre for 70° of the cycle.

This way, enough time is given to create the pressure in the cylinder. The torque is also better so the force exerted on the crankshaft is less substantial than in a classic system.

Gear box

Gear changes are automatic, powered by an electronic system developed by MDI. A computer which controls the speed of the car is effectively continuously changing gears . The latest of many previous versions, this gearbox achieves the objective of seamless changes and mimimal energy consumption.

Moto-alternator

The moto-alternator connects the engine to the gearbox. It has many functions:

• It supports the CAT's motor to allow the tanks to be refilled.
• As an alternator it produces brake power
• It starts the vehicle and provides extra power when necessary.

Air Car's Mileage and general running

Much has been said and written about the mileage of our vehicles and there has generally been a lot of unfounded speculation about the use of compressed air.

We have never claimed that the thermodynamic graphs of our engines would be adiabatic (nor are they isothermic). Mileage presents no problem - the volume and pressure of air in the car can be increased considerably. (by changing the tank size or the air pressure).

Distribution and valves

To ensure smooth running and to opitimize energy efficiency, our engines use a simple electromagnetic distribution system which controls the flow of air into the engine.

This system runs on very little energy and alters neither the valve phase nor its rise.