Variable turbo technology making its way into gasoline cars....
Quote: Originally Posted by germancarfans.com
100 Years of Turbocharger – Porsche, Driving Force in Development
The very concept of turbocharger technology is linked inseparably with the name Porsche and the Porsche brand. It was back in October 1974 that the German sports car manufacturer from Stuttgart launched the world's first series production sports car with an exhaust gas turbocharger. And ever since, every new generation of the Porsche 911 Turbo has fascinated enthusiasts the world over with a special highlight in technology: the intercooler, bi-turbo, VarioCam Plus, as well as the title "Cleanest Car in the World" have all set the benchmark in turbocharger development. Now the highlight of the next generation of the Porsche Turbo is spelt out clearly in three powerful letters: VTG.
Introducing the new model, Porsche will be presenting the world's first turbocharged gasoline engine with variable turbine geometry (VTG). This technology featured in turbocharged diesels since the '90s ensures a significant improvement of engine flexibility and acceleration particularly at low engine speeds. So far, however, much higher exhaust gas temperature of up to 1000° C in comparison with the turbocharged diesel has always proved to be an insurmountable barrier. But now Porsche has solved this problem in close cooperation with Borg Warner Turbo Systems by using high temperature-resistant materials from space technology wherever required.
The core features of the VTG system are the variable turbine blades guiding the flow of exhaust gas from the engine in exactly the direction required on to the turbine wheel of the exhaust gas turbocharger. The principle of variable turbine geometry thus combines the benefits of a small and large exhaust gas turbocharger all in one – a combination ensuring both very good response and high torque at low engine speeds as well as superior output and high performance at high speeds. And the supreme level of torque is now maintained consistently throughout a much wider speed range.
Yeah, dodge hit that a while back... Smart idea. From what i have read on turbodoge.com, they have lots of probs with them though.
With the advent of computer technology, things become easier and more cost efficient to make. So that's probably why it took so long to put this into mainstream market.
psssssttttt... not that i was an engineering intern for the past two summers at borg-warner turbo systems in Asheville, NC or anything , but if its even close to the same design as the VTG turbos for the I6 diesel, stay far ,far away. they work great until the carbon deposits cause the vanes to stick. My dad is an RTO at the remanufacturing plant and he sees completely locked up vtg assemblies by the hundreds every day. that moving vane assembly in the animation is in the path of flowing exhaust . now the twin turbo setup being used on the new ford v8 is a different story...
they work great until the carbon deposits cause the vanes to stick. My dad is an RTO at the remanufacturing plant and he sees completely locked up vtg assemblies by the hundreds every day. that moving vane assembly in the animation is in the path of flowing exhaust . now the twin turbo setup being used on the new ford v8 is a different story...
Haaa!!! I thought of the same thing! I could imagine what would happen it carbon build up on those vains and here you go hitting it on the nail.
I use to lube vains like that on a turbine engine to prevent them from sticking.
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Variable turbo technology making its way into gasoline cars....
. now the twin turbo setup being used on the new ford v8 is a different story...
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