Efficiency Features in Luxury Vehicles - By: Audi South Africa

Vehicles with efficiency features are ahead of the curve, not only providing greater fuel economy, but also advanced environmental features that truly make them the vehicles of tomorrow.

Engine efficiency

Great advances in engine design make both petrol and diesel models more efficient than ever without compromising power. These engines are equipped with a particularly efficient method of direct injection.

Fuel is metered with precision and injected directly into the combustion chamber to ensure efficient combustion and better utilisation. This is further augmented by combining it with a turbocharger.
With more effective cylinder filling and compression ratios than on engines with conventional injection one can achieve lower fuel consumption without compromising on performance.

Common rail technology and ultra-efficient exhaust gas recirculation cut nitrogen oxide emissions substantially. This means that even a range of high-torque, state-of-the-art four or six cylinder diesel engines can be considered environmentally friendly, especially if they include a nitrogen oxide catalytic converter which converts harmful nitrogen oxides into harmless nitrogen and water.

Efficiency systems

An energy recovery system uses an intelligent voltage controller for the generator to recover energy during braking and coasting phases of a journey, storing this energy temporarily in the battery. It essentially converts kinetic energy into electrical energy. As soon as the car accelerates again the battery directs the temporarily stored energy back into the vehicle.

Start-stop systems actually turn the engine off when the car is at rest. The system will then quietly, conveniently, and quickly turn the engine back on when the clutch pedal is depressed. This drastically reduces fuel consumption and CO2 emissions.

A dual-clutch transmission combines the convenience of a torque converter transmission with the dynamics and efficiency of a manual transmission. This allows it to change gears within a few hundredths of a second without any perceptible interruption of pulling power.

This kind of gearbox brings a significant fuel saving as, in the automatic mode, the control function which performs gearshifts swiftly, times them for optimised fuel consumption.

The efficiency program

A key efficiency feature in luxury vehicles is the on-board computer with an efficiency program which is linked to the driver information system. This system displays data relevant to fuel consumption and gives recommendations for more efficient driving.

The gear-change indicator signals to the driver when he or she should change gears and another function provides information on which on-board consumers, such as the climate control system, are active and how much fuel they are consuming.

When it comes to a form of mobility that is future-proof, numerous innovations in various efficiency measures encapsulate the cutting-edge technology that is at the very heart of these vehicles. Efficiency features in luxury vehicles will indeed have a lasting impact on automotive engineering.

About the Author

Audi South Africa continues their tradition of constant innovation of efficiency features in luxury vehicles. Contact your nearest Audi dealer to test drive an Audi and experience a safer, more enjoyable ride.

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