Jan 18 2011, 12:30 AM
QUOTE(stormlcc @ Jan 17 2011, 01:58 PM)
who needs supercharging when the turbo technology is so advanced nowadays? and why add more weight and complexity with a supercharger when u can make do with just a turbo?
good decision to make this happen!
the reason why that engine uses super is because of the small size... like gti, with 2l the lower rpms is not a prob so the turbo is only needed for higher rpmsgood decision to make this happen!
QUOTE(feelfree @ Jan 17 2011, 02:22 PM)
The supercharging actually is working at low RPM and we all know that most of the Turbo will not get good result at low RPM or we call it turbo lag, so VW thinking to get good power from low to high rpm, so they mixed the supercharge and turbocharge together, low rpm the supercharge will kick in to give full torque until certain rpm, the supercharge will stop working and turbo charge will then start working until redline.
turbo gets good results also lar, if it is made to cater to low rpms... just that if u put a low rpm turbo at the high rpms will run out of juice... usually ppl get high rpm turbos because low end power usually solve with higher cc engineQUOTE(tishaban @ Jan 17 2011, 02:56 PM)
There are twin turbos and twin scroll turbos today which has a smaller turbo for low RPM and bigger ones for higher RPM. This can already overcome turbo lag and reduce the complexity of both a supercharger and turbo in the same engine. If the end result ie flat torque curve and lower emissions while reducing complexity can be achieved with one twin scroll turbo charger why make it more complex?
The VW TSI engine is a great engine but technology moves on.
true, but usually not in small engines.... at least 2 litre and above will benefit from twin turbos... for now twin-charger is still better in the 1.4 blockThe VW TSI engine is a great engine but technology moves on.
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