A New Type Of Turbocharger!
Variable Geometry Turbochargers and Twin Scroll Turbochargers each have their own unique advantages, but what if you could combine the technology together? Borgwarner has developed a turbocharger concept where a twin scroll turbocharger has a valve which can redirect exhaust airflow into just a single scroll, or vary the amount the valve opens and allow for the gases to completely split between the two scrolls.
Comments
I love your videos!
I’d like to know something: Are you a mechanical engineer?
“ I graduated with a degree in mechanical engineering from North Carolina State University in 2012. I have a passion for cars and I love to teach people, so I created this site and my YouTube channel to teach others about cars. “
This seems a lot like what is in the turbo bmw models. How wrong am i?
that’s just a twin scroll turbo, which he has a separate video explaining. They’re basically the same as this but without the variable part that switches the air flow from one channel to the other dynamically - the air is just always going through both
Holy cow that sounds amazing! Is this already used in some cars? Or not yet?
Supra owners have been using something similar called a quick spool valve for a while with noticeable results.
BMW have something similar
I forgot which manufacturer is doing this but I believe someone is using compressed air to aid in the lower RPM range. The compressed air is released in the exhaust manifold right before the turbo to reduce turbo lag. I want to say Volvo. Correct me if I’m wrong.
Wow!!! road&track magazine featured your explanation on their home page too…
http://www.roadandtrack.com/new-cars/car-technology/videos/a27640/variable-twin-scroll-turbocharging/
Good going Jason!!!!
I have a question about back pressure on these variable twin scroll turbos. One of the main benefits of the twin scroll turbo is avoiding back pressure on overlapping exhaust valves. Won’t this be negated by effectively switching all cylinders into one exhaust housing?