Twin Power Turbo and Twin Turbo Power in a BMW - EXPLAINED

If you open the hood of a BMW car you can see the wording "Twin Power Turbo" on the top of the engine, Many of them will say it's a two-turbo are placed in the engine and produces power so it is known as Twin Power Turbo.

That's not the answer for that, In this blog, let us see the reason behind the naming Twin Power Turbo and Twin Turbo Power in a BMW.

For better understanding, the turbocharger (normal turbocharger) on a car applies a very similar principle to a piston engine. It uses the exhaust gas to drive a turbine. This spins an air compressor that pushes extra air (and oxygen) into the cylinders, allowing them to burn more fuel each second.

The BMW TwinPower Turbo technology is used in 2011 based on the twin-scroll principle and has been actively installed in BMW petrol and diesel engines.

The innovative technology of turbo also gave the green light for downsizing the size of engines. Thanks to TwinPower Turbo, some of the preceding 6-cylinder engines in the lineup have been replaced with 4-cylinder units that were superior in terms of efficiency, response, and pulling power.

You may ask why it benefits more, it has many benefits, as it allows for more variability within the engine range and also helps improve fuel consumption, whilst also reducing the CO2 emissions thanks to the enhanced, effective gas recirculation process. 

 How it works?

TwinPower Turbo works in conjunction with the High Precision Injection, the Double VANOS variable camshaft control, and VALVETRONIC variable valve control.

One of the common mistakes is that many believe twin-turbo equals Biturbo, which is false in most cases, even though both rely on two turbochargers. Anyway, our topic is different from Biturbo.

To clarify, let’s start from small definitions:

1. twin-turbo technology employs two turbochargers that are placed one next to the other which is commonly known as (“twin”).

2. biturbo employs 2 turbochargers as well, yet they are located one on each side of the cylinder bank (typical for V8 engines), You can see it in Mercedes Benz AMG cars.

3. TwinPower Turbo is relying on a single turbocharger with two scrolls and

4. TwinTurbo Power (yes, this one exists too) relies on two turbochargers.

So that's it, TwinPower Turbo is not the same as TwinTurbo Power, so don’t mix them up.

Sounds easy, huh? If not read the above points twice. Now I'm coming to the function of it in the engine.

BENEFITS of  TwinPower Turbo:

1. a proper and quicker boost response, given the balanced pairing of cylinders based on firing order

2. sustained, uninterrupted power delivery at all engine speed, based on constant recirculation of exhaust gases through the twin-scroll

3. maximized pulse energy feeding the turbocharger wheel 

4. increase of running efficiency and life of the turbocharging unit

5. significant reduction in turbo lag and fuel consumption

6. improved low-end power delivery, similar to twin turbo engines

 

Here the TwinPower Turbo is currently fitted to either 4-cylinder and 6-cylinder BMW engines, irrespective of the running fuel (diesel or petrol). In inline0four applications, cylinders that fire 1st and 3rd are teamed up on one scroll, whereas, cylinders that fire 2nd and 4th in the sequence are paired on the second scroll.

In the case of the inline-six-cylinder powerplants, the combination order is typically 1-3-5 on one scroll, 2-4-6 on the other scroll. In what BMW V8 units need more power led to the adoption of twin-turbo, so 2 turbochargers placed together, given the hot inner V architecture (with the turbochargers placed between the cylinder banks). And yes, the turbocharging technology in the 8-cylinder powerplant is called BMW TwinTurbo Power, although not visibly labeled on the engine hood.

That's it guys I explained as simply as possible from my side. Actually, here you can see the marvel of engineering super, huh!  

That's it for today's blog, Feel free to share your opinions on the comment session.

A Blog by KK.