VW's new twincharged - the way forward ?

[Rich]

I have a 1.4 GT TSi 170ps - Supercharged and Turbocharged ( remaped to 198bhp )

Many of my mates when i got the car didnt believe it was both Supercharged and Turbocharged - even the mechanic said to me, "you can't have both mate. pop the bonnet, i'll see"


So, a 1.4 litre engine, does 0 - 60  7.6 seconds  -  what might a 2litre twincharged be ? 


VW's new TSI technology, latest 1.4-litre direct-injection petrol engine dual-charged ( came out in 2006 )



Some videos of acceleration

What are you thoughts ??? 

[cmdrfire]

Twincharging ftw. VW's working a lot on forced induction engines as way to reduce engine size and increase power outputs efficiently. The superturbocharged 1.4 is a damn fine engine, as is the CCTA 2.0T (they're both based on the same tech of course, and derivatives of the EA888 "World Engine").
Twincharged 2.0 would be good 

[Rich]

I just found a DSG lauch control on the 170ps 1.4 GT TSi.


http://www.youtube.com/watch?v=59Os0tEms7w&feature=related


Lol at the guy who wrote - look at the temperature gauge at the bottom  ( its a boost gauge )

[bennylenny88]

lmao!
but ive always wanted that engine....
constant boost FTW!

[luca]

Twincharged is good IMO, but to get big power you cant beat single turbo or efficient supercharger. Twincharge systems can suffer due to making alot of heat with a sc and turbo. Twincharge will have its limits and they will be much lower than a turbo engine

[Rich]

There are some APR tuned VW raced up golfs of the 1.4 GT TSi and they are pumping out 245bhp !!!!!!!   WOOT


And thats out of a 1.4 litre engine - crazy 

[luca]

There are some APR tuned VW raced up golfs of the 1.4 GT TSi and they are pumping out 245bhp !!!!!!!   WOOT

Thats good power for a 1.4 but there wont be much more left in that engine. 1.4 turbo engine could make that power with a good flowing engine and turbo too . 
All im saying is that twincharge sounds like the best setup because you get both but you can make the same if not more with just turbo or just a supercharger

[bacillus]

Where is this going?

Guys in the US with  BT GTis are getting in excess of 500bhp...  

[luca]

Im not going anywhere with it, all im saying is its not the way forward for big power or economy

[bacillus]

Im not going anywhere with it, all im saying is its not the way forward for big power or economy

Sorry mate, my comment was directed to the OP.   

[DubwayDan]

i had a revo stage 1 put on my 1.4 tsi the other week (140 version)

here is the outcome 

at the flywheel...



at the wheels...



engine is standard apart from bmc cda, forge bov and the revo.

[Rich]

Not bad - its what comes to the wheels that counts ^^; - a lot is lost which could be an improvement in the near future.

Twincharged is good IMO, but to get big power you cant beat single turbo or efficient supercharger. Twincharge systems can suffer due to making alot of heat with a sc and turbo. Twincharge will have its limits and they will be much lower than a turbo engine

The way the GT TSi works is, the supercharger works up to about 3,500 revs then cuts out and then tubo kicks in. This means a constant acceleration from the word 'go' - if that makes sense.

A turbo needs exhaust gasses which kicks in around 3,500 (roughly) so you lose on on take off from 0 - 3,500 revs

The beauty of the GT TSi is there is no lagg in the acceration

Hope this also answers the question to Baccilus

[BeezerDiesel]

That's sort of the answer.
In a small capacity engine the turbo won't spin up as quickly as in a bigger one so the supercharger will fill the hole in the bottom end of the power curve (emissions come into it a lot too).
In a bigger engine, say 2.0, the extra volume of the exhaust gasses can spin up a modern light pressure turbo from around 1500rpm hence the added expense and complexity of the supercharger isn't really needed.
Horses for courses.

As an example using Diesel engines as they benefit the most from turbo charging, a Polo 1.4 TDI has almost no power below 2000rpm but in a large truck with an eff off huge capacity engine the turbo is spinning nicely from around tickover and it's all over and done with at 3000rpm give or take.

Then again I could be talking out of my arse!