German Car Zone

A little over a year ago Volkswagen introduced their TSI engine range in 138 hp and 168 hp flavors. Those two engines both had displacements of 1.4L with the output of something considerably larger. They achieved this by combining gasoline direct fuel injection with what they call twin charging. Both engines had both a turbocharger and mechanical supercharger.

A third 122 hp TSI engine has now been introduced at the Vienna Motor Symposium. The new engine still has direct injection and a turbo but loses the blower. The engine puts out seven percent more power and thirty percent more torque than VW's 1.6L FSI engine while burning six percent less gas. All the power of the TSI engine is transferred to the wheels via a new seven speed version of the DSG dual clutch gearbox. The new box loses the wet clutches of the current six-speed unit in favor of a dry setup.

The new engine/gearbox combination will be rated at 40mpg when installed in the Golf and is also available in the Jetta and Touran models.

[Source: Volkswagen via EuroCarBlog]

Since the output is 122 hp , this must be a 1.2 lt TSI engine.

From what I understand, this 7-speed DSG will initially only be able to take up to 250Nm of torque. So its application will be for small displacement engines only.

Looks like its here purely for FC purposes first.

The mpg is very impressive, but I don't really understand of point in these TSI engines when a diesel is just as good, but with a higher mpg!

Diesels are roughly 50-60% of the sales , isn't it nice that VW cares about the other 40-50% who want to buy a benzin engine.

Yup. Some countries like mine don't allow diesels. Plus I think these TSI engines have a wider rev band?

It says in PR 1.4 Yannis

Market launch in the second half of 2007


Wolfsburg, 27 April 2007 - Volkswagen is continuing its drive train offensive. At the International Vienna Engine Symposium (26 - 27 April), Europe's largest car maker presented its new TSI petrol engine (90 kW / 122 PS) and the world's first seven-speed dual clutch gearbox (DSG) for the compact and mid-class. Both products are scheduled for market launch in the second half of the year.


TSI stands for maximum power coupled with minimum consumption by combining direct injection and turbo-charging with reduced engine capacity. The award-winning TSI engines with a power output of 103 kW and 125 kW are popular choices, for example for the Golf and Touran. The new 90 kW TSI will be the third option in the TSI engine line-up.

With 200 Newton metres of torque at 1,500 rpm, the torque of the current 1.4-liter turbo engine is almost 30 percent higher than the torque of the 1.6 FSI engine. The TSI has low-end torque gains of up to 66 percent. In spite of the improved performance and torque characteristics, consumption has been reduced by approximately six percent. Technically, the new TSI is based on its compressor counterparts with 103 and 125 kW. In contrast to twin-charged engines, the "small" 90 kW TSI uses just the turbo-charger for boost - an additional compressor is not required.


World's first seven-speed DSG gearbox for volume models

A further innovation is the seven-speed DSG gearbox. In contrast to the six-speed DSG gearbox, the clutches of the new gearbox do not run in an oil bath. This further improves efficiency. Volkswagen's six-speed DSG gearbox gave automatics sensationally low consumption figures. Thanks to this efficiency and sporty shifting characteristics, the DSG provoked a boom in the popularity of DSG gearboxes in the compact and mid-class. For example, the DSG is ordered in 25 percent of Tourans today. The new seven-speed DSG gearbox has added an attractive option to the Volkswagen range. It will be available for vehicles from the Polo to the Passat. The transferable maximum torque is equivalent to a maximum of 250 Newton metres.

The combination of the two new products results in excellent consumption figures and convenience, comfort and driving enjoyment. In the Golf, it has a fuel consumption of just 5.9 l/100 km. Both the seven-speed DSG gearbox and the 90 kW TSI show once again that Volkswagen makes highly innovative technology available to all drivers.

Sounds great, but a turbocharger, supercharger and a fancy gearbox...not a VW I'd want to keep for 10 years! Lots of "stuff" under there and very complex. I wonder if we'll ever get one of these TSI engines in the U.S.

M

That was I thought at first, but they tested this engine at the lab to an equivalent of 300,000km on the road and it endured through it.