Audi TFSI For Sale

Skip to main content A1 A3 A4 A5 A6 A7 A8 Q5 Q7 TT R8 RS Audi site navigation Explore models Used cars Owners area Fleet sales Audi innovation About Audi Locate a dealer Virtual factory tour Our technologies FSI, TFSI & TDI Transmissions quattro Audi efficiency Audi Motorsport Audi R15 TDI Audi R10 TDI Audi at the DTM Audi R8 LMS Motorsport news Concept cars quattro concept A1 e-tron Audi A8 hybrid Detroit showcar Audi e-tron Frankfurt showcar Audi e-tron Sportback concept A1 Sportback concept TT clubsport quattro R8 TDI Le Mans Concept A1 project quattro concept Cross Cabriolet quattro Cross Coupe quattro Audi Heritage Iconic cars Motorsport Company Audi is born Premium class Audi & Lamborghini Winning partnership Innovation FSI engines More output and torque FSI technology makes it possible to achieve a seemingly improbable combination of lower fuel consumption and enhanced power and performance. FSI direct fuel injection technology brings these benefits to virtually all the petrol engines in the Audi range, in many cases in combination with turbo charging for optimum response. More power, less fuel FSI technology increases the torque and output of petrol engines, making them up to 15% more economical and with reduced exhaust emissions. The dimensions and harmonisation of the combustion chamber design, combined with the airflow and injection rate, results in more power being squeezed out of every drop of fuel. FSI – how it works With FSI technology, fuel is injected directly into the combustion chamber. The injector regulates the amount of fuel with millisecond precision at injection pressures of between 30 and 110 bar. During the injection process, the evaporating fuel has a significant cooling effect on the cylinder charge. This contributes to improved cylinder charging and enhanced engine output. The cooling effect also helps reduce the engine’s tendency to knock. This reduction means that the compression ratio of FSI engines can be set considerably higher than for engines with conventional injection systems. The engines of the FSI family are fitted with a two-stage variable intake manifold. The power mode (short duct length) contributes to the high specific power output of the engines at high engine speeds. At low revs, the long duct length setting is selected increasing the maximum torque by more than 15%. With the aid of a flap system in the intake duct, the in-cylinder flow can be optimally adjusted. In part-load operation, a strong flow ensures low fuel consumption and low exhaust emissions. At full load, the air is drawn in with minimal losses, meaning that torque and output are increased. TFSI engines Audi is the first manufacturer in the world to combine direct injection FSI technology with forced induction in volume production. The exceptionally broad torque plateau of the TFSI engine on the one hand permits a fuel-efficient driving style with few gearshifts, and on the other hand means that only light accelerator is needed to produce impressive thrust. TDI engines TDI explained TDI engine technology made its debut in 1989. Audi presented the world’s first production car diesel engine with turbo charging, direct injection and electronic management at the Frankfurt Motor Show (IAA). Turbodiesel technology with direct injection went on to become a major success. Today, Audi TDI engines featuring the latest common rail injection technology are as notable for their power and refinement as they are for their exceptional economy. Their great advantage is plentiful torque that is available from low revs, making for strong and easily accessible performance, coupled of course with remarkable cruising range. This choice blend continues to make TDI variants the most popular in every Audi model range that offers this option. Common rail system explained In TDI engines equipped with the common rail system, all cylinders are located on a single high-pressure rail. This rail is an accumulator, which is supplied by a pump and stores the fuel at a pressure of up to 2,000 bar – the equivalent of the weight of a luxury saloon car on the space of one square centimetre. Thanks to the high pressure and a very fine bore diameter of only one tenth of a millimetre in the nozzle, the injectors achieve very fine atomisation of the fuel. This ensures excellent mixture preparation and highly efficient combustion, which delivers greater power, low emissions and low fuel consumption. See the site in all its glory To make the most of the Audi website, you need to have JavaScript enabled in your browser. Audi R10 TDI Meet the history maker Footer navigation Login Sitemap Find a Centre Merchandise shop Audi Accessories Configurator Audi offers Specialist sales Audi channel Audi Heritage Miscellany Careers Motability Environment Terms & conditions Privacy Battery Recycling © Audi 2010 All rights reserved || This page contains content which may update dynamically, depending on links or controls you operate. The dynamically updated content will be within the main content area, and you may use the following link to skip to this main content. Skip to main content A1 A3 A4 A5 A6 A7 A8 Q5 Q7 TT R8 RS Audi site navigation Explore models Used cars Owners area Fleet sales Audi innovation About Audi Locate a dealer Return A5 Sportback Engines TFSI & FSI explained TDI explained At a glance TFSI: Direct injection petrol and turbocharging combined TFSI technology unlocks superior power, more dynamic performance and better economy from petrol engines. In fact, compared with many naturally aspirated V6 engines with more cylinders, TFSI delivers the same sporty performance but using 10 to 15% less fuel. FSI and turbocharging technology work so well together because the evaporation of fuel in the combustion chamber cools the intake air giving higher compression, improved engine efficiency and, in turn, lower CO2 emissions. Introducing the Audi valvelift system All petrol derivatives of the A5 also feature the Audi valvelift system. This innovation varies the valve lift between two levels which provides the car with better low-end torque and a more effective dynamic torque build up. The effect is a significant increase in engine efficiency, so you can get greater power and improved response from less fuel. See the site in all its glory To make the most of the Audi website, you need to have JavaScript enabled in your browser. Smooth transmission quattro Saving you fuel Engines Handling Audio & communication Safety Convenience features Driver aids & comfort The finishing touch Interior style features Exterior style features Specifications Finance & offers Quick links Arrange a test drive Request a brochure Company car tools Configure the A5 Footer navigation Login Sitemap Find a Centre Merchandise shop Audi Accessories Configurator Audi offers Specialist sales Audi channel Audi Heritage Miscellany Careers Motability Environment Terms & conditions Privacy Battery Recycling © Audi 2010 All rights reserved || June 7, 2005 Award for the 2.0 TFSI Audi Engine Source: Audi AG Audi's pioneering achievements in the domain of petrol injection technology are not restricted to success on the racetrack. The 2.0 TFSI has now been awarded the title of "Engine of the Year". Audi is the first manufacturer in the world to combine petrol direct injection with turbocharging in the spheres of both motor racing and volume production. The 2.0 TFSI embarked on its success story in the Audi A3 Sportback. It is now also on offer in the Audi A4 and A6. It is available in three performance versions ranging from 170 bhp to 220 bhp. The 200 bhp version, which is used in the Volkswagen Golf GTI, provides a level of propulsive power that truly befits that car's status. The jury praised the Audi engine, which dominates the engine displacement category from 1.8 to two litres, for its good "balance between technology, performance, economy and environmental acceptability". The jurors were also impressed by its pulling power and high level of everyday suitability. The exceptionally broad torque plateau on the one hand permits a fuel-efficient driving style with few gearshifts, and on the other hand means that only light accelerator action is needed to produce assertive thrust and a spontaneous unleashing of power. With FSI technology, fuel is injected directly into the combustion chamber. The injector, located on the admission side in the cylinder head, is served by a high-pressure pump driven by the camshaft and a pressure reservoir shared by all cylinders - the common rail system. The injector regulates fuel delivery with millisecond precision, at injection pressures of up to 110 bar. By comparison, a manifold injection system operates at between four and six bar. Two balancing shafts rotating at double the speed of the crankshaft compensate for the engine's inertial forces and also achieve a high standard of acoustic comfort. The results are outstanding for a four-cylinder engine. The intake manifold integrates the charge movement flaps, the position of which is adjusted by a continuous-action pilot motor. The movement of the airflow, or tumble, can thus be controlled optimally on the basis of the engine-speed and load conditions. The fuel-air mixture is distributed homogeneously within the combustion chamber. A spontaneous power build-up and an agile response at every point along the broad engine-speed band are the positive consequences. The four-valve cylinder head with low-friction roller cam follower valve gear has an inlet duct geometry that has been modified from that of the naturally-aspirated FSI engine, producing even higher tumble values. This results in both greater refinement and superior knock resistance, and therefore improved efficiency. The result is that the turbo engine achieves a compression ratio of 10.5:1, a figure that is otherwise typically achieved only by naturally-aspirated engines. This, coupled with the advantages of petrol direct injection, plays a crucial role in boosting the thermodynamic efficiency compared with both manifold injection engines and conventional turbo engines. Terms of Use | Copyright © 1996-2010 by AudiWorld. All rights reserved. || > Autocar.co.uk is brought to you by Haymarket Consumer Media Autocar is part of Haymarket Cars and Aftermarket About Haymarket | International licensing | © Haymarket Media Group 2010 Fulfill your potential at Haymarket Careers >