My idea/theory is based off of freewheel on a bike. On a bike, if the wheels can travel faster then the person pedaling a bike, they will. But when they can’t the person will pedal the bike.
My idea is to modify the turbos center section and place a freewheel there. Now add a belt driven from the motor. The engine will drive the turbo at lower RPM’s till the turbo can spin fast enough to generate boost on its own. Also, once the turbo takes over by itself, the engine won’t be under load because it won’t be driving the turbo.
There may need to be gear ratios to get the engine to drive the turbo allowing the boost in the lower RPM’s.
Is there a downside to my idea? I can’t find one but I’m not an engineer.
belt driven compressor wheels and exhaust driven compressor wheels are not the same.
turbos spin at 100k rpm, cenfrif. superchargers spin at a MUCH lower speed
also, the massive extra weight of parts needed on the shaft in the turbo, and the fact that the center section gets hot enough to coke the oil, so a belt definantly wont live in there
plus your realy going to limit turbo placement
and the sideload of the belt will require different (larger and heavier) bearings because the shaft will no longer float-to-center on the tiny bearings turbos have
your basily trying to twincharge an engine, but your combining 2 types of forced induction that cant be combined
The turbine impeller needs to be strong and LIGHT.
adding mass adds inertia which SIGNIFICANTLY slows down response.
You need to study turbochargers and the conditions under which they operate before thinking of redesigns. Its cool that you are thinking and you should continue to do so.
Look at the Toyota Supra SEQUENTIAL TWIN TURBO system
you would NEED a clutch system on the center section like the rest of us said to make this happen, and would not be cost effective as a single unit.
too complicated, and with too many parts leaves you with a lot of possibilities for failure.
there have been several attempts at coming up with a reliable super-turbo/turbo-super system by a few different companies, and iirc there have actually been a few working models, but it never seems to have caught on. I’m assuming there are problems that havent been figured out yet
yes, i understand it. i just miss typed it while i was do 3 other things at the same time.
do you have any idea how fast a turbocharger is spinning? this is not going to work. i cant see it flying apart the first time the “freewheel” engages and throws off the balance.
cool idea, but variable vanos turbos are more efficant in terms of moving parts, cost, realiabiltiy, and size constraints (not to mention they complete the same objective as your idea)…
keep thinking, dont get discouraged… and when you have a great idea, that you think is origional, invest! :tup:
