Top Margin Menu

Peugeot Compressed Air Hybrid Could Be Game Changer

Peugeot-Citron Hybrid air tech

“They didn’t know it was impossible, so they did it”.

Car manufacturers are investing billions to build an alternative to the internal combustion engine. The trouble is, they don’t know yet which new technology will win.

There is no shortage of pretenders racing to replace 100-year old petrol and diesel-powered motors. Purists who want to quickly replace carbon-dioxide spewing traditional engines are pushing battery-only electric cars and fuel-cells. Others who believe it makes more sense to gradually replace traditional technology by helping make it more fuel efficient are cheering on hybrids, which use batteries to raise efficiency, or making internal combustion engines more efficient with fly-wheels, cylinder de-activation and turbo-charging. New global supplies of gas using fracking techniques suggest this also may be a plentiful and cleaner fuel to power cars into the future.

None of these new ideas have achieved more than stop-gap or niche status yet, but Peugeot-Citroen of France has come up with a contender called HybridAir, which experts say could be a game-changer. This uses compressed air to replace the battery. Peugeot showed a 2008 small car with the new technology at the Geneva Car Show earlier this year. Its subsidiary Citroen has shown a C3 with it too.

Compressed air power is not a new idea and has been used to power torpedoes. It works like steam in an old locomotive because after being compressed, it expands on release and this generates power.  Peugeot’s system for the 2008 has three modes – petrol only operation, a mixture of the two, or compressed air only. The Peugeot 2008 concept car has a tank just behind the front wheels full of compressed air. This is generated by the compressor using power saved as the car free wheels, so-called regenerative braking. The computer meters the flow of compressed air to augment the 3-cylinder petrol engine during combined operation, will cut out the supply entirely during high speed driving, and take over completely when the vehicle needs to be CO2-free in city centres, using only the hydraulic pump and motor.

Peugeot-Citroen, currently in a financial crisis with annual losses of around €2 billion, says HybridAir is cheaper than current petrol-electric hybrids and can achieve 2.9 litres per 100 kms, (97.4 mpg imperial, 81.1 U.S. mpg) the equivalent of 69 grammes per kilometre of CO2. Air power only can be used for 60 to 80 per cent of the time in city driving, depending on traffic density and its ability to recapture energy while free-wheeling. The lack of batteries slashes costs and CO2 use in production, and makes recycling easier.

Peugeot 2008

Peugeot admits that all the technological problems have yet to be solved, but hopes to bring the HybridAir to market by 2016. Frost & Sullivan analyst Anjan Kumar said the system, a brilliant idea in theory, could have a big impact by 2018 to 2020. But questions about durability and safety have to be sorted, and there is challenging research and development still to be done.

And you have to wish a company like Peugeot luck which ends up its video presentation with this great quote from Mark Twain.

“They didn’t know it was impossible, so they did it.”

 Neil Winton – June 20, 2013

Print Friendly, PDF & Email

7 Responses to Peugeot Compressed Air Hybrid Could Be Game Changer

  1. Denys Cabral June 22, 2013 at 11:43 am #

    I completely agree with your point of view and I’m proud to work at Peugeot Citroen.

    • Neil Winton June 29, 2013 at 10:21 am #

      Thanks Denys. You might want to read my next story on Peugeot/GM. Coming Wednesday I think

  2. Lowry G June 28, 2013 at 2:28 pm #

    I’m wondering whether the displayed parts could be fit into an old Citroen. If they make a HybridAir DS or XM, or why not, my Jumpy (not that attractive of a model), they would surely be changing the game.

    • Neil Winton June 29, 2013 at 10:23 am #

      If it works on the C3, no doubt Peugeot-Citroen will extend its use

  3. D. Jaksic June 30, 2013 at 2:35 am #

    After that short lived BPC Electrification marriage of convenience with BMW, should not be surprising that Peugeot lost the appetite for electrons. But there is also a brilliant expmple from the eighties -a small French company did conversions of Citroen CX and Renault 5 to hydrostatic hybrid drive, using refurbished aircraft motor/pumps. Those were driving every wheel separately, and the stetch versions had six wheels. The fuel economy was excellent.
    But those conversions were pricey and the relatively high hydraulic pressures were probably something general public would not like. Still, it was a great concept and execution.
    Bringing air in seems a wise move – cheap, light, clean if it leaks. Does not depend on cost of copper and rare earth materials.

  4. D Goldstein June 30, 2013 at 5:17 pm #

    Sounds enticing, but similar concepts have been around for 150 years. The problem with CA cars is that air compressors are relatively inefficient. As a result, — quoting here from Clean Technica — “compressed air motors don’t make as much power or torque as car owners are used to, meaning very low top speeds, often around just 40 mph. That is barely enough for city driving, and highway cruising is totally out of the question. It can also take many hours to fill the tank of a compressed air car, despite a seriously limited range, and problems with cooling the tank and heating the air make these vehicles quite power hungry.” Poor money-losing Peugeot Citroen can do better than this. A partnership with GM or Toyota on a battery-electric hybrids might be a better choice.

    • Neil Winton July 1, 2013 at 3:24 pm #

      Thanks for your comments. Time will tell…….

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Site Designed and Administered By Paul Cox Photographic