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z******o
发帖数: 320 | 1 低速电动叶轮运转保证有足够的进气量，至于电能从哪里来，新闻里没说，多半不是来
自于内燃机充电（损耗太高了），不知道靠制动能量回收够不够
如果量产，是不是马力最大的民用2.0发动机？
原新闻：
http://www.motorauthority.com/news/1094807_volvo-reveals-450-hp
Audi recently unveiled a high-performance diesel engine that featured a pair
of turbochargers and an electric motor that spools the smaller of the
turbos at low revs to help it produce almost instantaneous boost. The
technology is expected to debut in 2016 in a high-performance version of
Audi’s next-generation Q7 SUV and slowly filter across to more models.
Now Volvo has revealed a similar concept, based on a gasoline engine. With
its decision to adopt engines with no more than four cylinders, Volvo has
been forced to add complex hybrid systems to boost power levels to match
outputs of rival manufacturers’ V-8 models. But its new electrically-driven
turbocharger technology looks to be a simpler—and likely more affordable—
alternative.
Using a 2.0-liter Drive-E four-cylinder engine as the starting point, Volvo
engineers added a twin-turbocharging system to boost output. But unlike a
conventional turbocharger setup that uses wasted exhaust gases to spin its
compressor wheel, the turbochargers on Volvo’s new engine spin their
compressors using high-pressure air fed from a third, electrically-driven
turbo, in essence making this a triple-turbocharged engine.
Though not mentioned, the electrically-driven turbo is likely utilized at
low revs only. Once revs are sufficiently high, the two turbochargers
feeding air to the engine likely rely on wasted exhaust gases to keep their
compressors spinning, like a conventional turbocharged engine.
But to further boost output, Volvo’s new engine also uses a high-pressure
fuel system that pumps fuel into the engine at more than 3,600 psi. Combine
this with the charged air from the turbochargers, and you’re looking at a 2
.0-liter four-cylinder engine capable of delivering 450 horsepower—without
any turbo lag!
At present, the engine is still in the concept phase but Volvo is working
closely with suppliers as well as its performance arm Polestar to further
develop the technology.
“When we launched the Drive-E powertrain family, our aim was to deliver the
most advanced four-cylinder engines in the industry based on emissions and
fuel consumption relative to performance and drivability,” Volvo R&D chief
Peter Mertens said. “The 450-hp high-performance Drive-E powertrain concept
demonstrates this ambition and the versatility of the Drive-E powertrains. | i****x
发帖数: 17565 | 2 这玩意别说量产了，估计连个原型都没造出来，只有设计吧 | c*********r
发帖数: 19468 | 3 有样机喽
【在 i****x 的大作中提到】
: 这玩意别说量产了，估计连个原型都没造出来，只有设计吧
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