Pegasi

The concept

The Pegasi is a small urban two-seater car that runs on natural gas. It is designed to be driven in cities where there are natural gas infrastructures and where you can refuel directly from your home or from a public natural gas refuelling stations. The Pegasi would be able to run at 70 kph and cover a distance of 100 km. It would be able to refuel ten times faster than an electric car and it would cost four times less than a gasoline car to refuel.

 

The Background

Natural Gas nowadays costs less than 35 cents per litre and it’s cleaner than gasoline. We can adapt the existing combustion engine to run on liquid propane (LP) or natural gas (NG), and some manufacturers already offer reliable engines that run on LP/NG. In fact, there are over 14.8 million vehicles worldwide that use natural gas (Source : Wikipedia). Last summer, I asked a team of engineering students from the École de technologie supérieure to create a technical document that details how we could build a ‘P0’ prototype for the Pegasi. After the project description was delivered, I asked Industrial Designer Jan Bujnak to create a rendering of this new urban vehicle concept.

 

How It Works

The Pegasi would be powered by a Subaru EH72 LP/NG engine. This is a proven model that delivers 25hp. Another option would be to use a 40hp model, the EH99. The transmission would be an automatic belt driven Continuously Variable Transmission (CVT) like the ones found on Can-Am ATV’s.

Of course, Natural Gas takes more space to store than ordinary fuel. On the Pegasi, two 30 litres cylindrical tanks would be positioned under the side-by side seats. They would thus be easily accessible for refuelling or servicing and they would be protected from possible front or rear impact. At 3600 psi, those tanks could provide around 3.5 hours of constant running time. Owners would be able to refuel those tanks directly from home by installing a Coltri MCH14 CNG compressor. Refuelling would take less than forty-five minutes, which is still ten times faster than charging an electric Smart Car with a fast charger.

The Pegasi would be built with a metal tubing frame. Its body parts could be made of injection molded plastic to reduce weight and cost. The first model could be launched with a closed habitat, and a convertible model could be introduced a few years later.

 

What It’s Used For

As mentioned above, the idea behind the Pegasi project is to develop a small and affordable two-seater that uses natural gas. The vehicle would be able to travel at speeds up to 70 kph and cover a distance of around 100km before requiring refueling. It would be designed for driving around the city but not on highways. You would be able to refuel it at home in less than an hour at a fraction of the cost of regular fuel. A team of student engineers worked over 700 hours on this project and they delivered a 127 pages project evaluation and description. If you are interested in learning more about the Pegasi, don’t hesitate to contact me.

 

The Team

I would like to thank Alexandre Jodoin, Marc-André L’Heureux, Éric Massouh, Stécy Riendeau and Antoine Sutter who developed the Pegasi project. I would also like to thank the following teachers who supervised the above students : Raynald Guilbault, Zhaoheng Liu and Patrick Thériault. Last but not least, I would like to thank Jan Bujnak who created the images of the Pegasi concept. Jan is based in Slovakia and graduated from the Academy of Fine Arts and Design in Bratislava. Jan Bujnak also produced the images of the Arrakis concept, the Night Car and the Otobuxi.