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VW engine will be the first 4-cylinder in the industry to use cylinder deactivation tech

With more stringent fuel economy standards looming in the U.S. and elsewhere, auto manufacturers are looking to pull out all the stops to improve economy as much as possible. Carmakers are turning to technology like direct injection and automatic start/stop. Several automakers are also using cylinder deactivation on their larger engines.

Cylinder deactivation is something that some carmakers in the U.S. and abroad have used for years. Chrysler has used the technology in its Hemi engines, Honda uses it on some of its V6 models, and Audi will use cylinder deactivation in its new line of “S” performance models.

VW is set to make a first in the automotive market by offering cylinder deactivation on its 4-cylinder models.

The VW tech will turn off two engine cylinders under certain conditions. The engine is called the 1.4L TSI and VW promises that it will offer a fuel savings of 0.4-liters/100km and when combined with start/stop technology the vehicle would save 0.6-liters of fuel. For those more familiar with U.S. mpg ratings, that works out to an improvement of in the range of 
3 to 4.5 mpg on average. 

The engine would turn off two of the cylinders under low to medium loads, and VW says that the tech will meet the future European EU6 emissions standards. The cylinders will be deactivated when the engine is operating between 1,400 and 4,000 rpm and the engine torque is in the range of 25 to 75Nm.

VW claims that operating range applies to about 70 percent of the driving distance in the EU fuel economy driving cycle. VW also points out that as soon as the driver presses the pedal the cylinders will reactivate without the driver being able to tell it happened. The cylinders also would not turn off if the vehicle were being driven in a sporty manner apparently. 

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RE: Good on paper..
By Spuke on 9/7/2011 12:07:42 AM , Rating: 2
Your should understand why when the dealer tells you "30K miles is normal."
I know not everyone is a mechanic and we depend on these people to fix our cars BUT, I wouldn't take his word on it. And I sure as hell wouldn't buy a Chrysler.

RE: Good on paper..
By YashBudini on 9/7/2011 12:56:13 AM , Rating: 2
All I was inferring to is that the "service person" would find such terrible reliability to be normal. That they actually believe that? Yes, I think they do.

RE: Good on paper..
By Spuke on 9/7/2011 11:49:40 AM , Rating: 2
That they actually believe that? Yes, I think they do.
I agree. Shame, huh?

RE: Good on paper..
By lagomorpha on 9/7/2011 6:09:24 PM , Rating: 2
A "service person" mostly sees cars that people bring to them to repair. If a component didn't break then the "service person" wouldn't see it often. At this point most know better than to buy Chryslers.

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