se trata de un nuevo sistema que aprovecha los gases del escape para general energía suficiente para otras funciones del vehiculo, ademas dicen que ahorrará un 10% en combustible engineers, working under the SMMT Foresight Vehicle research initiative, say the system recovers the energy that is normally lost down the exhaust pipe. They claim it makes engines more efficient, reduces emissions and creates enough electricity to run all of a car's power systems. Because the technology is fairly simple, it could be fitted on all car, van, bus and truck engines within a few of years. Called Tiger (Turbo-generator Integrated Gas Energy Recovery System) it could reduce fuel consumption by up 10% and help hit the government's commitment to reduce greenhouse gas emissions. Universities The engineers - from Visteon UK, Coventry, Switched Reluctance Drives, Harrogate and The University of Sheffield Electrical Machines & Drives Research Group - have installed an extra exhaust pipe below the engine's exhaust manifold. A valve, linked to the engine's management control system, allows some of the high energy gases to be drawn off to drive a special generator, using a device called a switched reluctance drive, This is essentially similar to a turbo-charger turbine, but instead of it driving a compressor, as a turbo-charger does, it is attached to a special generator which replaces the car's alternator. It can spin the generator at up to 80 000 r/min and creates an electrical power of up to 6 kW - more than enough to drive a car's electrical systems. Dr Richard Quinn, one of the engineers leading the project, says the system could be developed to produce anything from 12v to 600v. The 'free' electricity could drive all of a car's heating, lighting, air conditioning and in-car entertainment systems, as well as driving the car's cooling system using an electric water pump. Reduces friction Longer term drive belts and alternator could be scrapped and Tiger's electric drive used instead. This would reduce friction losses. In a hybrid electric car the Tiger system could feed the 'free' power directly to boost the main drive motors, or back to the battery to give the car an even greater range. On trucks, the extra electricity could be used to power electrical systems to run refrigeration units for chilled food, turn the motors on cement mixers or power pumps on fuel tankers. Dr Quinn, of Visteon's European Powertrain operations, described it as a really exciting development. "Up to a third of the power that a conventional engine produces is wasted as exhaust gases. By harnessing some of that power we can make the engine more efficient,"