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Turbonormalizers may be the future for 2 strokes

A turbonormalizer system increases the amount of compressed air that is delivered to the engine by controlling how much of the total exhaust gas bypasses the turbocharger. This bypass route is controlled by a butterfly valve called a wastegate. Closing the wastegate increases the amount of exhaust gases being forced past the turbine wheel. The resultant higher rpm of the turbine and compressor wheels increases the amount of compressed air delivered to the engine.

In this system the position of the wastegate is controlled by the absolute pressure controller. This controller monitors the pressure from the compressor output and maintains a constant air pressure in the "upper deck" of the system by adjusting the position of the wastegate.

The upper deck is the part of the turbonormalizer system that is located between the compressor outlet and the engine throttle plate. The controller is designed to maintain the upper deck pressure at two to three inches of pressure above the maximum manifold pressure the engine would ever need. This type of system works the turbocharger a little harder than some "on-demand" systems, since the components of this system are adjusted to always maintain 33 to 34 inches of upper deck pressure, but this is offset by the fact that there's never any turbocharger lag or spool-up time. A pressure relief valve (pop-off valve) is mounted in the ducting between the compressor outlet and the engine, and is designed to open if the controller malfunctions and allows upper deck pressure (and consequently manifold pressure) to increase beyond safe limits.
 
It's not a new system but it may be a new application. If consistant sea level pressure was always maintained and you couldn't over boost it then it might not void the warranty. Manufacturers might even be more interested in building production turbos. With an intercooler, you should be able to make consistant hp at any altitude without changing anything. How cool would it be to be able to ride a 425# sled with 175hp at 10,000' with a 2 yr. engine waranty?
 
It would be cool but would be even cooler if the HP numbers were in the 220+ HP range :) . I can see where if the turbo was constantly spooled and a gate supplied the given pressure the lag problem would be greatly diminished. Is there a company currently doing this or was this an idea you thought up revpilot?
 
Naw Im gonna convert mine to the Mr Fusion/Flux Capacitor Doc Brown setup.

Remember it takes 1.16 Jigawatts to opperate propperly, any less will result in electrical pressure fluctuations that will destroy the conductivity of the flux capacitor resulting in muffler bearing failure.
 
Remember it takes 1.16 Jigawatts to opperate propperly, any less will result in electrical pressure fluctuations that will destroy the conductivity of the flux capacitor resulting in muffler bearing failure.

no its 1.21
 
It would be cool but would be even cooler if the HP numbers were in the 220+ HP range :) . I can see where if the turbo was constantly spooled and a gate supplied the given pressure the lag problem would be greatly diminished. Is there a company currently doing this or was this an idea you thought up revpilot?

Not my idea, I can barely keep the shop-vac going. They've been used on airplanes forever and the newer modern planes like the Cirrus are going to them because they're hard to screw up a $60,000 engine with. The 220 horse sounds good, in fact that's where i'm at with mine but only at sea level. If you subtract 3% per 1000' your 220 horse NA machine is at about 150 at 10k and your clutch is off, race fuel is way to hot....with the 400# mark being realistic now, your 175 horse xp (or ?) would have about the same power to weight ratio as a 250 horse Apex. For most of us that's enough snort to get us to the places we want to be and it sure would be nice to jerk the cover, fill it with car gas and just ride without wondering if you're going to melt it down today.
 
They use this on Planes?? Interesting. Ive often thought about a similar design. More so, a constant density Turbo. One that varies the PSI of the charge to allways make the combustion chanber have the same O2 volume as at sea level. Basically, as you increase in elevation, the boost PSI is increased. Reliability is the name, not all out HP. Unless you like complete motor rebuilds every year.

Atleast in my book it does
 
Tornado Alley did a Turbo Normalized set up on an SR 22 , it was in one of the issues of Flying magazine . They rated the system very highly , very user friendly . This is about the only chance of seeing an OEM 2 stroke turbo sled in my opinion.

Just to compensate for the thin air at alttitude , but not to create problems . The pump gas turbo's are also very interesting . Twisted Turbo's has Pump Gas M 1000's running around , no one else is selling that ,that i know of.

I rode my Twisted 8 for the first time on sunday. I know i will never own another 2 stroke without boost . Very interesting topic . I cant wait to see the first factory 2 stroke turbo.
 
A turbonormalizer system increases the amount of compressed air that is delivered to the engine by controlling how much of the total exhaust gas bypasses the turbocharger. This bypass route is controlled by a butterfly valve called a wastegate. Closing the wastegate increases the amount of exhaust gases being forced past the turbine wheel. The resultant higher rpm of the turbine and compressor wheels increases the amount of compressed air delivered to the engine.

In this system the position of the wastegate is controlled by the absolute pressure controller. This controller monitors the pressure from the compressor output and maintains a constant air pressure in the "upper deck" of the system by adjusting the position of the wastegate.

The upper deck is the part of the turbonormalizer system that is located between the compressor outlet and the engine throttle plate. The controller is designed to maintain the upper deck pressure at two to three inches of pressure above the maximum manifold pressure the engine would ever need. This type of system works the turbocharger a little harder than some "on-demand" systems, since the components of this system are adjusted to always maintain 33 to 34 inches of upper deck pressure, but this is offset by the fact that there's never any turbocharger lag or spool-up time. A pressure relief valve (pop-off valve) is mounted in the ducting between the compressor outlet and the engine, and is designed to open if the controller malfunctions and allows upper deck pressure (and consequently manifold pressure) to increase beyond safe limits.

Airplane tech for sleds........I like it.

As stated, it's been around awhile. My question is this: Turbonormalizers work great for engines that maintain a certain RPM, such as an airplane. There is no lag if, say, you're transitioning from cruise RPM (and speed) to WFO. Can the turbonormalizer go through several major fluctuations (WFO to idle to WFO to midrange) without failing to maintain turbo RPM???? The speed at which the turbo's absolute pressure controller would have to react makes me wonder if it could keep up. If it couldn't keep up with erratic throttle inputs (like when I boondock) there would be times where turbo speed (and boost) would be out of cadence with my throttle thumb, resulting in inconsistent throttle response......Not a good thing in the steep and deep.

Still, I'd like to see this tech explored in snowmobiles......Who knows what the future might bring.
 
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airplane tech.....

so will the sled be able to take off from a tread/run mill that is traveling in the opposite direction?
 
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