Are diesel engines and sports cars mutually exclusive? Most enthusiasts might say so. Compression detonation factory well representing long-distance cruisers, pack-mule pickups, and SUVs, and in Europe, at hand are even a a small number of diesel-powered coupes and convertibles representing the tolerant and the parsimonious. Sports cars, on the other administer, are all around aggressive response, charging to the redline, and emotional acoustics. Like smear with oil and fill up, the two truly don’t mix.
But a modern sort of homogenization is underway. The Audi RS5 TDI prototype to facilitate we truly flogged next to the brand’s use track next to Neuburg an der Donau has managed to reset our notions of diesel engines. This 385-hp 3.0-liter V-6 TDI—still a prototype, but close to cycle production—has blocked gaps with gasoline engines in areas wherever diesels used to be hopelessly outclassed.
But a modern sort of homogenization is underway. The Audi RS5 TDI prototype to facilitate we truly flogged next to the brand’s use track next to Neuburg an der Donau has managed to reset our notions of diesel engines. This 385-hp 3.0-liter V-6 TDI—still a prototype, but close to cycle production—has blocked gaps with gasoline engines in areas wherever diesels used to be hopelessly outclassed.
Electric Supercharger
The recipe to the RS5 TDI’s performance and efficiency gains is a Valeo-supplied stimulating supercharger. It is positioned next to the "cold side" of the intercooler and, credit to a low-inertia rotor, gifted of reacting contained by 100 milliseconds and revving to 70,000 rpm. It can blow next to chock-full blast outside of engine load and revs. This allows the engine’s twin turbos to be calibrated representing highest boost—up to 49.3 psi—and power. The leap to 385 horsepower next to 4200 rpm is solely achieved by the turbos, not by the supercharger. And the TDI’s ample 553 lb-ft of highest torque is offered from 1250 to 2000 rpm. These information mirror persons of BMW's 381-hp, tri-turbo inline-six diesel, which is an impressive engine, but cataract far terse of this Audi mill in stipulations of receptiveness.
The recipe to the RS5 TDI’s performance and efficiency gains is a Valeo-supplied stimulating supercharger. It is positioned next to the "cold side" of the intercooler and, credit to a low-inertia rotor, gifted of reacting contained by 100 milliseconds and revving to 70,000 rpm. It can blow next to chock-full blast outside of engine load and revs. This allows the engine’s twin turbos to be calibrated representing highest boost—up to 49.3 psi—and power. The leap to 385 horsepower next to 4200 rpm is solely achieved by the turbos, not by the supercharger. And the TDI’s ample 553 lb-ft of highest torque is offered from 1250 to 2000 rpm. These information mirror persons of BMW's 381-hp, tri-turbo inline-six diesel, which is an impressive engine, but cataract far terse of this Audi mill in stipulations of receptiveness.
The stimulating supercharger requires a separate 48-volt power supply, and the conversion from the 12-volt usage adds cost and complexity. Down the road, cost is estimated to cheapen as more electrical functions are integrated into a public 48-volt usage.
Audi's own, seven-speed dual-clutch transmission would be the absolute companion representing this ultrasporty diesel engine, but it lacks sufficient strength to market the RS5 TDI’s torque. And so the RS5 TDI is fitted with the ZF 8HP eight-speed automatic, a quick-shifting and efficient component to facilitate has be converted into a level amid these types of gearboxes.
Audi's own, seven-speed dual-clutch transmission would be the absolute companion representing this ultrasporty diesel engine, but it lacks sufficient strength to market the RS5 TDI’s torque. And so the RS5 TDI is fitted with the ZF 8HP eight-speed automatic, a quick-shifting and efficient component to facilitate has be converted into a level amid these types of gearboxes.
Speakers With Benefits
While we are rejection fans of pretend sound engineering, Audi is forgiven representing squashing this diesel’s rattle with—we’re not making this up—a twosome of speakers situated go up to the dual tailpipes. The auditory payback are great. They emit a dark rumble next to idle and transfer a subdued howl as you competition up the rev degree.
The chief series-production relevance representing this engine will be in the next-gen Q7 crossover, in the same way as which it will migrate into the A6 and A7. But the RS5 is the ideal vessel in which to make plain its generous capabilities. Here, the enhanced sound and the explosive power dispensing are backed up by exceedingly lithe use. The car turns in with precision, and credit to a Quattro sport rear differential, it can be coaxed into an effortlessly handy slide. Audi says the RS5 TDI prototype weighs rejection more than the conformist RS5 with its effortlessly aspirated V-8.
While we are rejection fans of pretend sound engineering, Audi is forgiven representing squashing this diesel’s rattle with—we’re not making this up—a twosome of speakers situated go up to the dual tailpipes. The auditory payback are great. They emit a dark rumble next to idle and transfer a subdued howl as you competition up the rev degree.
The chief series-production relevance representing this engine will be in the next-gen Q7 crossover, in the same way as which it will migrate into the A6 and A7. But the RS5 is the ideal vessel in which to make plain its generous capabilities. Here, the enhanced sound and the explosive power dispensing are backed up by exceedingly lithe use. The car turns in with precision, and credit to a Quattro sport rear differential, it can be coaxed into an effortlessly handy slide. Audi says the RS5 TDI prototype weighs rejection more than the conformist RS5 with its effortlessly aspirated V-8.
Two years previously, Audi launched an SQ5 with a 313-hp TDI engine representing the European advertise, and it fostered debate around the compatibility of "S" badging with a diesel engine. The question has been developed by the sales victory of to facilitate version. Is it stage to look after an RS diesel? "We are bearing in mind the options," is all to facilitate Audi powertrain chief Stefan Knirsch will uncover.
Our take: The technical barriers own disappeared and stimulating supercharging has the latent to transform the diesel. While the fuel efficiency of diesels is well established, the newfound power and receptiveness of the RS5 TDI are on par with to facilitate of high-performance gasoline engines. During our hardback, the “RS” and “TDI” look pretty respectable organized.
source: caranddriver.com
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