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Infiniti will turn to turbocharged 4- and 6-cylinder engines, hybrids, full electrics

"And another one gone, and another one gone / Another one bites the dust"
Well, it looks as though the recently approved CAFE standards that aim to increase automobile fuel economy to 54.5mpg by 2025 have claimed another victim. Infiniti currently has V8 engine options available in its M luxury sedan, FX crossover, and QX sport utility vehicles, but that likely won't be the case in future iterations of those vehicles.
According to a report by AutoGuide, increasingly stringent fuel economy and emissions regulations mean that V8 engines are no longer on the table for Infiniti vehicles. V8 engines have traditionally been available in luxury vehicles as a symbol of prestige and power, but Infiniti will look to new ways to bring powerful engines to its lineup while still keeping fuel economy in check.
“I don’t think any car that is on Infiniti drawing boards from here onwards we should expect a V8 to be included in that plan,” Johan de Nysschen, Infiniti's global president.
Infiniti's 5.0-liter V8 produces 385hp, its 5.5-liter V8 produces 420hp, and its 5.6-liter V8 (truck-based) produces 400hp.

Infiniti to say good-bye to V8 engines
There are numerous directions that Infiniti can take with the absence of a V8 engine. Automakers like Ford already have twin-turbocharged V6 engines that develop 365hp while still delivering respectable fuel economy. Even Hyundai is rumored to be getting in on the action with a twin-turbocharged 3.3-liter V6 which generates 395hp.
For entry-level and mid-range models will also see a shift in available engines as well. Infiniti's current workhorse engine is the 3.7-liter “VQ” V6, but Nissan is also working on a turbocharged four-cylinder engine to deliver comparable power and vastly improved fuel economy.
Other options for Infiniti include fully electric vehicles (like the LE Concept) and additional hybrid models (we’re hoping that Infiniti delivers a production version of the Emerg-E).
Infiniti isn't the only luxury maker to drop a V8 engine from its lineup. When Lexus redesigned its mid-range GS sedan, it dropped the 4.6-liter V8 engine option and instead launched the vehicle with a 3.5-liter V6 and a 3.5-liter V6/performance hybrid model for those that want the power of a V8.

Source: AutoGuide

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RE: Wait a minute
By 91TTZ on 9/5/2012 11:54:43 AM , Rating: 2
Infiniti sales have been lagging for years, and they have among the lowest fuel economy of any V8 luxury-class (only Jaguar/Land Rover are worse in the WT25 sales) and consumers have clearly spoken. The best selling luxury cars are typically I4, V6 or I6, those being Audi A3/A4 2.0T, Mercedes C-class (the 3.5 M112 is their best selling engine) and obvious BMW's fleet of I6's.

As I pointed out in another post, Infinity's V8 powered Q45 got the same gas mileage as their V6 powered G35, and produced more power.

Infiniti has taken the correct approach in deciding NOT to develope a whole new V8 engine for mass production and instead focus on what most other manufactures are doing, that is, developing small, powerful, economical and fuel efficient turbo-charged engines.

Turbocharged engines are not necessarily more economical or fuel efficient. They tend to get about the same fuel economy as a larger naturally aspirated engine that produces the same power.

Exhaust is free power, and if Chrysler hadn't completely destroyed the reputation of turbocharging in the 80's and early 90's by poorly implementing them (usually without liquid cooling, often causing oil to overheat blowing headgaskets or various seals in the turbo housing failing, and no implementation of a 'turbo timer' or cool-down system which is required when not running liquid cooling

Exhaust isn't free power. You're restricting the exhaust by driving the turbine. Also, in order to run forced induction you need to run a lower compression ratio which decreases fuel economy.

Also, Chrysler's turbo engine from the late 80's/early 90's WAS water cooled.

"The compressor itself was aluminum, driven by a turbine wheel in an iron housing with liquid-cooled bearings. The shaft bearing on the exhaust housing side was water-cooled, to reduce hot shutdown bearing failures."

"Intel is investing heavily (think gazillions of dollars and bazillions of engineering man hours) in resources to create an Intel host controllers spec in order to speed time to market of the USB 3.0 technology." -- Intel blogger Nick Knupffer

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