Volkswagen, Audi, and Skoda 1.4 TSI : the problems of downsizing

[size=38]Volkswagen, Audi, and Skoda 1.4 TSI : the problems of downsizing[/size]
Reliable motors that could easily pass 500 thousand km and more over. On top of the paradigm shone the concept - downsizing, and that means only one thing - to make maximum power with minimum volume.

History 1.4 TSI

As VAG came to TSI? The progenitor was the EA113 series engines, representing: cast iron block, two camshafts, one Phaser, 5 valves per cylinder and a compact turbocharger. All this wealth was installed on many cars of concern VAG (VW, Audi, Skoda).
Since 2006, it comes into play the new generation EA888. The base was taken the EA113 series. In parallel, in the same year there is molekularnej, turbocharged engine 1.4 TFSI, which was the epitome of the idea of downsizing.





1.4 TSI/TFSI (EA111) was based on a cast iron block, located on top of the aluminum cylinder head 16 valves, two camshafts and Phaser intake and the direct injection of fuel where the same without him. But the most important is the turbo.
For example, in a 1.4 TSI (Twincharger Stratified Injection) is set as the compressor with a mechanical drive (such as Roots) and classic turbocharger.
In General, the designation TFSI stands for Turbocharget Stratifled Fuel Injection is the engine with direct fuel injection is equipped with the turbine. But TSI is a motors with twin turbo and stratified injection, although Audi still refers to as dual turbo TFSI.
EA211 is the next series of small-volume engines, in which engineers took into account several shortcomings of the previous series.

The engine 1.4 TSI

The EA111 series

1.4 TSI (EA111) at the dawn of its appearance was very high-tech engine: direct (stratified) fuel injection, twin-turbocharged - all admired, the engine has received an award of international competition "engine of the year" in 2010.
But the 1.4 TSI was not so delightful. Despite the efficiency and good dynamic performance, the engine can boast of a reference reliability.
The most common negative decided immediately is the tension of the chain and the defective timing chain tensioner. But the tension of the chain is not as critical as detonation. It detonation is the number one enemy and to avoid it the manufacturer recommended to fill a gasoline with an octane rating of 98, or at least 95.
But some motorists are guided by the tenet "That is not forbidden by law is allowed" on a regular basis fill the car, '95 or even' 92, trying to save. Yes, and those owners who refuel ' 98 is not immune from poor quality gasoline and, as a consequence, the occurrence of detonation.



The burnout of the piston 1.4 TSI
So, at a constant detonation occurs when damage to the piston rings, feed oils and in the end, it all leads to a complete burnout of the piston. In addition to this, poor quality fuel causes problems with the food system.

The EA211 series

If the previous series engineers followed by volume reduction and increase in capacity, the new series of the company went further and created a whole direction - MQB.
MQB is an embodiment of a modular strategy in engine. Standardization and savings - it is based on a modular strategy. Thanks to her: Polo, Golf and Passat are now using the same modules and components.

The engine 1.4 TSI (EA211)

There are two variations of this engine: 1.4 TSI (122 HP) and 1.4 TSI (140 HP). The difference is minimal in my engine at 140 HP a second phase shifter on the issue.
The engine design has changed:

• Cylinder head and exhaust manifold is now integrated;
  
• Pump and thermostats have a single housing;
  
• The timing chain was replaced on the belt.
  

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In the EA211 1.4 TSI, equipped with a small turbocharger with an electric pressure regulator. On the 1.4 l engine (120 HP) turbine wheel diameter - 37 mm, diameter of the pump wheel is 40 mm, blowing such a turbine is 1.8 bar. A more powerful variant, respectively, 39.2 mm., 40 mm. and 2.2 bar.








In the engine there was a system of direct injection, but the block is now part of the team aluminum blocks, fortunately there are no Alusil and nikasil, and have a cast iron sleeve. Also, the engine used a new dual-circuit cooling system, and more powerful versions are available the system of disabling two of the cylinders.

Problem 1.4 TSI (EA211)

1. Accurater wastegate turbine.
Jamming of the thrust and its breakdown is a fairly common problem and to avoid the need to constantly monitor and to prevent. Prevention consists in application of high temperature grease. If, however, the thrust was damaged, you can restore it using the repair kit.




2. Another common problem is the marriage of the cylinder head. There were cars released until 2014, manifested in high oil consumption.
3. The use of poor-quality gasoline or gasoline with a low octane number causes the burnout of the piston.

The results

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The engine 1.4 TSI (EA211) was another step toward unification in the near future we expect non-repairable modular engines. A new series of engines: Volvo, Jaguar Land Rover, BMW, VAG confirm this direction, and the Renault-Nissan Alliance, went further, creating a modular architecture of the entire vehicle - Common Module Family.

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I advise you to watch:
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• The structural features of the SKYACTIV engines
  
• Tucson and Sportage: choose the most reliable engine
  

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