Hybrid Air engine features conventional petrol powered internal combustion engine, a special gearbox and hydraulics system and a compressed air cylinder. The motor and pump are located in the engine bay and powered by the compressed air in a tank under the car.
The system uses regenerative braking to produce energy while the motor and pump refill the tank with air. With the car running on petrol engine or air power individually or in combination, air power will be activated at below 43 mph and will be offered for 60% to 80% of city driving time. Called Hybrid Air, the new technology will ensure that cars like the Citroen C3 and Peugeot 208 will be able to emit just 69g/km of CO2, while by 2020 mileage will be increased to 117 miles per gallon (41.42 kmpl).
The main endeavor to introduce Hybrid Air technology system that is cheaper than a conventional hybrid system will in turn see a 45% improvement in fuel consumption over conventionally powered cars along with a 90% increase in range. The technology is being developed by PSA Peugeot Citroen in collaboration with automotive supplier Bosch. The first cars with this know-how are being planned for 2016.