Why VW’s new 1.5 TSI is a clever piece of engineering is
Posted on 28-04-2016 at 18:54 by Dizono – 125 Responses”
Downsize? Not at Volkswagen. There is the 1.4 TSI replaced by this copy with one and a half litres of swept volume. More power and lower consumption are the result.
Currently you can get the 1.4 TSI with 125 or 150 hp in a very large part of the VAG range encounter. From Golf to Sharan and Audi A1 and Skoda Superb. This 1.4 TSI, together with the 1.2 TSI of the EA211 generation. The new 1.5 TSI is a thorough-going development and gets no new name, but as EA211 TSI evo through life.
In the first instance, the 1.5 in two power variants: 130 and 150 hp. Volkswagen has therefore chosen the capabilities a little closer to each other, whereby only the least strong may benefit from the extra horsepower. But the extra power is not the main focus of this new source of power, that is the fact that up to ten percent more economical than its predecessor.
This is more than the stroke volume increase so that the motor is slightly less hard doesn’t have to work. So does the new TSI according to the so-called Miller Cycle, which is simply a fifth started to add to the four arbeidsslagen of a conventional internal combustion engine. A technique that Mazda first used on the Xedos 9 2.3 V6 and a higher yield in combination with supercharging.
Normally, they work in a Miller Cycle engine with a supercharger, because unlike a turbo at low speeds for sufficient pressure. Volkswagen tackles the different, however, and mount a turbo with electronically adjustable blades on the paddle wheel. This will ensure that the turbo not only at high engine speeds, sufficient boost pressure, but this is also all in the lower regions of the rev band.
Other new features include common rail fuel-injection (yes, also on a gasoline engine), which the fuel under a pressure of up to 350 bar can inject. This fuel is better atomized, and that in turn leads to a better combustion. Further fits Volkswagen cilinderuitschakeling and get the cylinder liners a new coating. This should be the lubrication of the cylinders to improve and prevent the piston rings wear down and the car as a result more oil is going to use. Exactly the problem with 2.0 TSI engines, however, occurs so.
Later this year will be the first models of this new krachtbon appropriate get and the 1.4 TSI gradually be phased out. Or there is also a new variant of the 1.2 TSI is not known.
