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Audi valvelift system

More power and torque combined with less fuel consumption – this is what every engine designer strives to achieve. The Audi valvelift system (AVS) has brought Audi a great deal closer to this goal.

Audi uses two versions of this innovative technology. On the V6 FSI engines with 2.8 and 3.2 litres of displacement, it acts on the intake valves. In this case, it regulates the amount of intake air by adjusting the lift in two stages for opening and closing the valves. The throttle can usually remain wide open – throttle losses, i.e. reduced efficiency when air is drawn in against resistance from the closed throttle, are largely eliminated. The engine is able to breathe freely, and achieves higher output and torque in combination with low fuel consumption.
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On the 2.0 TFSI, AVS acts on the exhaust side. By means of specific valve timing, the amount of fresh air in the cylinders can be significantly increased with the turbocharger, particularly in the lower engine speed range. This is because the exhaust gases are expelled faster and flow to the turbocharger is improved. This results in more torque, even more dynamic response and thus a substantial increase in pulling power. The system thus offers the driver appreciably more driving pleasure. In addition, AVS permits longer gear ratios, achieving a considerable reduction in fuel consumption.

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The specified fuel consumption and emission data have been determined according to the measurement procedures prescribed by law. Since 1st September 2017, certain new vehicles are already being type-approved according to the Worldwide Harmonized Light Vehicles Test Procedure (WLTP), a more realistic test procedure for measuring fuel consumption and CO2 emissions. On September 1st 2018, the New European Driving Cycle (NEDC) was replaced by the WLTP in stages. Owing to the more realistic test conditions, the fuel consumption and CO2 emissions measured according to the WLTP will, in many cases, be higher than those measured according to the NEDC. Therefore, the usage of CO2 emission values measured according to WLTP for vehicle taxation from 1st September 2018 on can cause changes in this regard as well. For further information on the differences between the WLTP and NEDC, please visit www.audi.de/wltp or https://www.audi.ie/ie/web/en/models/layer/wltp-lp/layer/nefz-wltp.html

We are currently still required by law to state the NEDC figures. In the case of new vehicles which have been type-approved according to the WLTP, the NEDC figures are derived from the WLTP data. It is possible to specify the WLTP figures voluntarily in addition until such times as this is required by law. In cases where the NEDC figures are specified as value ranges, these do not refer to a particular individual vehicle and do not constitute part of the sales offering. They are intended exclusively as a means of comparison between different vehicle types. Additional equipment and accessories (e.g. add-on parts, different tyre formats, etc.) may change the relevant vehicle parameters, such as weight, rolling resistance and aerodynamics, and, in conjunction with weather and traffic conditions and individual driving style, may affect fuel consumption, electrical power consumption, CO2 emissions and the performance figures for the vehicle. Further information on official fuel consumption figures and the official specific CO₂ emissions of new passenger cars can be found in the guide “Information on the fuel consumption, CO₂ emissions and electricity consumption of new cars”, which is available free of charge at all sales dealerships and from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Strasse 1, 73760 Ostfildern-Scharnhausen, Germany (www.dat.de).
VHost
www.audi.ie
Version
204.1.0
Build
20241112060845
Frontend
170.0.0
Rendertime
20241116192302
StaticVersion
20410
Activated Scopes
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