Cat Factory 2-Stoke Turbo?

[skegpro]

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[skegpro]

Parallel exhaust

Tis.
Wonder why they need a charge air cooler?

 

[skegpro]

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[skegpro]

https://patents.google.com/?q=turbo&assignee=Arctic+cat&oq=Arctic+cat+turbo

 

[skegpro]

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[E-Zmoke]

Tis.
Wonder why they need a charge air cooler?

Because intercoolers are the only real way to build a turbo sled? They run more consistent and you can hold them wide open for longer periods of time before the charge temps heat up. I would think this design would have some pretty hot charge/exhaust temps so the charged air cooler would cool things off and make them run real crisp and consistent

 

[maierch]

Tis.
Wonder why they need a charge air cooler?

Using Y Pipe exhaust to drive the turbo is bound to build more heat than driving the turbo after the expansion chamber. That just might be the difference that the charge temps were creeping up so they added the cooler.

In your very extensive cutting and pasting looks like there’s a couple of conventional setups as well so who knows which way they’re planning on going or if they are.

 

[skegpro]

Using Y Pipe exhaust to drive the turbo is bound to build more heat than driving the turbo after the expansion chamber. That just might be the difference that the charge temps were creeping up so they added the cooler.

In your very extensive cutting and pasting looks like there’s a couple of conventional setups as well so who knows which way they’re planning on going or if they are.

Yeah there is one that is belt driven? Supercharger?
I am guessing they just threw every bar napkin drawing in the patent so no one could actually tell whats gonna happen.

 

[skegpro]

Using Y Pipe exhaust to drive the turbo is bound to build more heat than driving the turbo after the expansion chamber. That just might be the difference that the charge temps were creeping up so they added the cooler.

In your very extensive cutting and pasting looks like there’s a couple of conventional setups as well so who knows which way they’re planning on going or if they are.

Would you build more power going straight pipe off the y-pipe like that?

Thought a 2 stroke couldn't run without a expansion chamber?

 

[jpmez69]

Would you build more power going straight pipe off the y-pipe like that?

Thought a 2 stroke couldn't run without a expansion chamber?

You would gain more efficiency in heat energy for the turbo coming off the Y pipe. However the turbo itself will break up the exhaust pulses boucing back required to make any kind of power in a 2 stroke engine hence why it's put at the end of the expansion chamber. Not as efficient but if it's only going to boost 4 to 8 psi it's adequate. it's not ever going to be able hit 30 psi even if you wanted to. There will never be enough BTU value in the fuel to get that high in a 2 stroke design. 4 strokes and Diesels, the closer the better to the manifold.

 

[skegpro]

Patent for the Alpha rail.
Kind of interesting to look at the patent drawings compared to reality.

https://patents.google.com/patent/US7360618?oq=arctic+cat

 

[maxwell]

Patent for the Alpha rail.
Kind of interesting to look at the patent drawings compared to reality.

https://patents.google.com/patent/US7360618?oq=arctic+cat

//uploads.tapatalk-cdn.com/20200116/b105f0172e8e7b5d78d355e171b79b1f.jpg

considering the wheels are on the inside of the rail i would say thats not a monorail?

 

[LMLCHEVY]

Maybe it’s only a half view?
Although the shock is on the wrong side......

 

[skegpro]

considering the wheels are on the inside of the rail i would say thats not a monorail?

The patent was extended for 10 years.

All I was getting at is the patent content is very vague.
Tough to tell whats the finished product actually is.

 

[skegpro]

Well isn't that interesting, in a really weird way, what in the actual F is that?

Exhaust generated by two-stroke engine 222 is provided to exhaust manifold 224. For example, in embodiments in which two-stroke engine 222 includes first and second cylinders, exhaust manifold would include first and second inlets connected to receive exhaust from the first and second cylinders, respectively. In other embodiments, exhaust manifold may include fewer or additional inlets for receiving exhaust generated by the two-stroke engine 222. Exhaust manifold 224 bifurcates the exhaust received from two-stroke engine 222 into first and second parallel paths. In some embodiments the first parallel path includes tuned expansion chamber 226 and external wastegate 228, and the second parallel path includes turbocharger 232 (specifically exhaust turbine 234). Exhaust provided to the first parallel path and the second parallel path is provided to exhaust muffler 230, which discharges the exhaust to atmosphere. The mass/volume of exhaust provided to the first and second parallel paths may be equal or unequal. In some embodiments, a wastegate is utilized to control the flow of exhaust provided to the turbocharger 232. In some embodiments the wastegate is external—as shown in FIG. 17A which includes external wastegate 228—and located on the parallel path that includes tuned expansion chamber 226. In some embodiments, the wastegate is internal to the turbocharger and is therefore located on the parallel path that includes the turbocharger (as shown in FIG. 17B, which includes internal wastegate 242′).