Auto Week has some finer detail on Lexus NX 200t and its Lexus-first turbocharged engine:
The NX 200t will feature Lexus’ first turbo engine, a 2.0-liter four with VVT-iW. Yes, that W is new. It signifies advance and retard of the intake cam. At low loads and rpm it can operate as an Atkinson cycle engine for greater efficiency and lower pumping losses. At higher engine speeds and greater loads it switches to the more standard Otto cycle…
The turbo is a twin-scroll for even more efficiency while the intercooler is an air-to-water-to-air unit. Output is said to be “over 200 hp.” It will be mated to a six-speed ECT automatic transmission which has been engineered for smooth transfer of power and seamless, linear acceleration, according to Lexus.
The dual Atkinson/Otto cycle of the NX 200t is the very same technique being used with the new RC F 5.0L V8 engine — it makes for an interesting balance in boosting fuel economy without sacrificing performance.
Considering the NX’s other North American powertrain is the same 2.5L hybrid engine used in the 200 hp ES 300h, how much horsepower should we expect in this Lexus-first turbo engine?
[Source: Autoweek]
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