Jaguar F-Type gets all-wheel drive

Jaguar’s F-Type sports car now has electric power-assistance for its steering across the range, which is cool, and an F-Type R Coupe with intelligent all-wheel drive, which is HOT!

SA-bound Lexus RC F: Performance for all

Lexus has produced its most powerful V8 road car yet. Get ready for the new SA-bound RC F, a high-performance car for any enthusiast. Or racetrack...

Are air hybrids the solution?

2011-02-10 14:49

JUST HOT AIR?: Petrol-electric hybrids and electric vehicles are punted as the future fuels, but are we skipping a few options?

Recent research suggests that alternative forms of regenerative braking could store the same amount of energy as current systems and further increase fuel efficiency.

Systems using an electric motor and generator to harness a vehicle’s kinetic energy and convert it into electricity that is then fed into the vehicle’s battery pack for storage are the most widely used applications of regenerative braking.

However, Gizmag.com says new research suggests that air hybrids that store energy as compressed air would be cheaper to produce than current electric vehicles and battery-electric hybrids. Alternatives such as mechanical and hydraulic systems exist, but it is believed pneumatic systems that store energy as compressed air, or air hybrid systems, can be used to create cars that are more fuel efficient than the current selection of alternative-fuel driven vehicles.

EXTRA POWER, ZERO IDLING


Gizmag refers to the work of Sasa Trajkovic, a doctoral student in combustion engines at Lund University in Sweden, who did his doctoral thesis on pneumatic hybrid vehicles.

Trajkovic says that the compressed air could be used to provide extra power to the vehicle on start up and save fuel by avoiding idling. And Trajkovic calculated that 48 percent of the brake energy compressed and stored in a small air tank could be reused, similar to the regenerative braking systems seen on current petrol-electric hybrid cars.

SMALLER AND CHEAPER


Gizmag says the air hybrid engine would work with petrol, diesel and natural gas engines, would be cheaper to manufacturer than battery packs and would take up less space than an electric hybrid engine.

While the idea of a pneumatic motor is not new, most of the work thus far has been theoretical, Gizmag says. Following their findings with the single-cylinder air hybrid engine, the researchers at Lund University are now hoping to expand their work to a multi-cylinder engine.

NEXT ON WHEELS24X

Read Wheels24’s Comments Policy

24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.

Comment on this story
2 comments
Add your comment
Comment 0 characters remaining

Inside Wheels24

Bellissimo! We drive new SA-bound 500X

Fiat's morphed its little 500 into a rugged, stylish crossover - the 500X. Wheels24's SERGIO DAVIDS went to Italy to drive the car on Fiat's proving ground and says Fiat's gone wild!

There are new stories on the homepage. Click here to see them.