Not a regular attendee of the annual International Vienna Motor Symposium? Neither are we—well, except for maybe The Continental—but happily, Audi sent us some news from the event via the internet. The automaker has redesigned its ubiquitous and sweet-hearted 3.0-liter diesel V-6, which powers a host of the brand's TDI models as well as many other VW Group vehicles, and the engine is more powerful.
Today, the VW Group's shared (but Audi-designed) 3.0-liter V-6 TDI engine puts out 240 horsepower and 406 lb-ft of torque in the U.S. in stuff like the Volkswagen Touareg, Audi A8, Porsche Cayenne, and Audi Q7. The new 3.0-liter will be offered in two strengths, with the burlier of the two putting out 268 horsepower and 443 lb-ft of torque. The lesser version still makes 225 horsepower—same as the old 3.0-liter before a recent upgrade added 15 ponies—and an unspecified amount of twist.
The new engine shares almost all of its specifications with the outgoing mill, including its 90-degree cylinder banking, 2967-cc displacement, and single-turbo forced induction. Audi tweaked the cooling system such that the block and heads have separate cooling loops, and stripped some friction from the piston rings and pins. The turbocharger and variable-flow fuel pump were also updated, and efficiency is up by a claimed 13 percent.
Perhaps the engine's most buzzworthy feature is its nitrous-oxide-scrubbing exhaust treatment bits, which Audi has combined into a single unit in what it says is a world first. The catalytic converter, diesel particulate filter, and SCR (selective catalytic reduction, otherwise known as urea exhaust after-treatment) injection systems are all integrated, and are of course compatible with stringent Euro-6 emissions regulations.
- 2014 Audi A7 TDI Tested: Get Drunk on Diesel
- 2013 Porsche Cayenne Diesel Tested: This Pricey Porsche Makes Sense to Someone
- Audi Q5 TDI Research: Full Pricing, Specs, Reviews, and More
In four-ringed showrooms, today's 3.0-liter V-6 TDI is offered in the Audi A6, A7, A8, Q5, and Q7 TDI models, and we expect Audi will begin to phase those engines out and begin integrating the new 3.0-liter in the near future. (Same goes for VW and its Touareg and Porsche and its Cayenne.) A U.S. Audi representative we spoke to couldn't confirm if or when the engine might reach our market, but again, it would seem a foregone conclusion that the engine will come soon. After all, how can you argue with more efficiency and more power?
from Car and Driver Blog http://ift.tt/nSHy27
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