Even better consumption: Technology from the modular efficiency platform
By their very nature, diesel engines utilize the energy contained in fuel especially well, and the technologies from the Audi brand’s modular efficiency platform further amplify this effect. Intelligently managed subsystems such as a demand-controlled oil pump consume less energy. Sophisticated production methods reduce friction within the engine. In many TDI units for instance, laser beams are used to perfectly smooth down the cylinder paths. This makes them last even longer, further reduces oil consumption and reduces stresses at the piston rings, which decreases friction as well as fuel consumption.
In addition to the engines, start-stop and recuperation systems also contribute to high efficiency. So do many other engineering features in these vehicles, from lightweight aluminum body design to LED lights, and from the highly efficient air conditioning system to economical route guidance in the navigation system.
Owing to this abundance of cutting-edge technology, Audi now has 33 models in its program with CO2 emissions of less than 140 grams per kilometer (225.31 g/mile), nearly all of them with TDI engines. They achieve exemplary fuel economy. The 2.0 TDI in the A4 puts out 100 kW (136 hp) and gets by on 4.6 liters/100 km (51.13 US mpg) – a CO2 equivalent of 119 grams/km (191.51 g/mile).
The 1.6 TDI, which will join the A3 model series in 2010, delivers 77 kW (105 hp), but consumes only 3.8 liters of fuel per 100 kilometers (61.9 US mpg), corresponding to a mere 99 grams of CO2 per kilometer (159.33 g/mile).
During the very recent Audi Efficiency Challenge A to B, a tour of Europe covering more than 4,182 kilometers (2,599 miles), the two four-cylinder units have already proven their worth: The A3 1.6 TDI got by on 3.3 liters/100 km (71.28 US mpg), the A4 2.0 TDI on 4.4 l/100 km (53.46 US mpg). Such endurance tests are a tradition at Audi: Even the first Audi 100 TDI models traversed the continent, achieving sensationally low fuel consumption values as well as long distances traveled between refills.
The next step: Audi clean diesel
Even 20 years after the market launch of the TDI, Audi is continuing to expand its lead and is excellently positioned for the future. Its innovative clean diesel technology renders exhaust fumes still purer by largely converting nitrogen oxides into harmless nitrogen and water. The 3.0 TDI clean diesel engine already meets the strictest exhaust emission limits in the United States as well as the Euro 6 limits announced for 2014. It is already propelling both the Q7 and the A4.
In the medium term, Audi is relying on second-generation biofuels such as sunfuel. These fuels use the residues of energy plants – not merely their fruits, as is the case in current versions of biodiesel. During combustion, they merely emit as much carbon dioxide as they have consumed from the atmosphere during their growth. Independently of this, Audi will continue to further reduce fuel consumption of its fleet of vehicles – with a target of 20 percent below its 2007 level by 2012. The potential inherent in the TDI is far from exhausted. In the past 20 years, Audi has written a tremendous success story with this engine concept – and will continue to do so during the next decade.
A complete overview of the history of the TDI including all engines, technologies, data and facts is presented in a new multimedia tool – the TDI Chronicle from Audi. Designed especially for the media, this reference source is published concurrently on DVD and on the Internet. You’ll find the link as customary at www.audi-mediaservices.com.
photo:Audi
By their very nature, diesel engines utilize the energy contained in fuel especially well, and the technologies from the Audi brand’s modular efficiency platform further amplify this effect. Intelligently managed subsystems such as a demand-controlled oil pump consume less energy. Sophisticated production methods reduce friction within the engine. In many TDI units for instance, laser beams are used to perfectly smooth down the cylinder paths. This makes them last even longer, further reduces oil consumption and reduces stresses at the piston rings, which decreases friction as well as fuel consumption.
In addition to the engines, start-stop and recuperation systems also contribute to high efficiency. So do many other engineering features in these vehicles, from lightweight aluminum body design to LED lights, and from the highly efficient air conditioning system to economical route guidance in the navigation system.
Owing to this abundance of cutting-edge technology, Audi now has 33 models in its program with CO2 emissions of less than 140 grams per kilometer (225.31 g/mile), nearly all of them with TDI engines. They achieve exemplary fuel economy. The 2.0 TDI in the A4 puts out 100 kW (136 hp) and gets by on 4.6 liters/100 km (51.13 US mpg) – a CO2 equivalent of 119 grams/km (191.51 g/mile).
The 1.6 TDI, which will join the A3 model series in 2010, delivers 77 kW (105 hp), but consumes only 3.8 liters of fuel per 100 kilometers (61.9 US mpg), corresponding to a mere 99 grams of CO2 per kilometer (159.33 g/mile).
During the very recent Audi Efficiency Challenge A to B, a tour of Europe covering more than 4,182 kilometers (2,599 miles), the two four-cylinder units have already proven their worth: The A3 1.6 TDI got by on 3.3 liters/100 km (71.28 US mpg), the A4 2.0 TDI on 4.4 l/100 km (53.46 US mpg). Such endurance tests are a tradition at Audi: Even the first Audi 100 TDI models traversed the continent, achieving sensationally low fuel consumption values as well as long distances traveled between refills.
The next step: Audi clean diesel
Even 20 years after the market launch of the TDI, Audi is continuing to expand its lead and is excellently positioned for the future. Its innovative clean diesel technology renders exhaust fumes still purer by largely converting nitrogen oxides into harmless nitrogen and water. The 3.0 TDI clean diesel engine already meets the strictest exhaust emission limits in the United States as well as the Euro 6 limits announced for 2014. It is already propelling both the Q7 and the A4.
In the medium term, Audi is relying on second-generation biofuels such as sunfuel. These fuels use the residues of energy plants – not merely their fruits, as is the case in current versions of biodiesel. During combustion, they merely emit as much carbon dioxide as they have consumed from the atmosphere during their growth. Independently of this, Audi will continue to further reduce fuel consumption of its fleet of vehicles – with a target of 20 percent below its 2007 level by 2012. The potential inherent in the TDI is far from exhausted. In the past 20 years, Audi has written a tremendous success story with this engine concept – and will continue to do so during the next decade.
A complete overview of the history of the TDI including all engines, technologies, data and facts is presented in a new multimedia tool – the TDI Chronicle from Audi. Designed especially for the media, this reference source is published concurrently on DVD and on the Internet. You’ll find the link as customary at www.audi-mediaservices.com.
photo:Audi