Rotrex Supercharger

[mRodiek]

I just picked up the new issue of Modified Mag and I was reading about the Rotrex Traction Drive Supercharger and it claims to have the best of both worlds [SC+Turbo].

It works similarly to a centrifugal supercharger with a compressor side like a turbo that links to a pulley that runs off of the crankshaft pulley. The difference between a SC and this unit is the planetary rollers that are supposed to be able to start boosting at lower engine speeds which was an issue with the SC.

Just thought Id share a little info, and wondering if anyone has heard about any support for the SR/KA/RB?

Discuss...

[95silvia14]

yea power enterprise has a kit coming out this summer for a twin charged sr but expect the price to be in the 4-7k range

[AutoShadow]

I'd prolly stick with the generic turbo, since for some reason, whenever I think of supercharger...all I can think of is a V8. Also, turbos have more support on this website, so we'll be able to answer your questions...hopefully.

[nikl240]

Visit the rotrex website. The technology behind it is pretty interesting. By using the planetary gears it can achieve a 12:1 ratio after the pulley. Turbo speeds but belt driven.

[RCA]

yea power enterprise has a kit coming out this summer for a twin charged sr but expect the price to be in the 4-7k range

The OP isn't talking about TWIN CHARGED is is talking about a super charger that has characteristics of a turbo. They are only using one forced induction medium so it is considered single charged.

I just picked up the new issue of Modified Mag and I was reading about the Rotrex Traction Drive Supercharger and it claims to have the best of both worlds [SC+Turbo].

Discuss...

I am glad you brought this up. I am very interested in this technology. If you read the whole article you know the advantages make this technology very real and I could be the best way to boost. My only issue is the article claims 40psi and yet I can not find one Dyno sheet of a car either on youtube of otherwise of a car making huge numbers or 40psi with the rotex superchargers

[mRodiek]

I saw the twin charged versions, and yes this really interests me alot. Im going to read into it a little more because it sounds like they have a good system set up. I want to see proof that the planetary rollers really allow for spool at lower engine speeds but it all seems to make sense at the moment.

Just creating food for thought, seeing if anyone would be interested as I am

[RCA]

The Bi-compressor Centrifugal Supercharging System features twin parallel mounted Rotrex compressors, which cooperate in generating the 1.4 bar boost pressure needed to create the colossal 806 Hp output. The innovative Danish Rotrex compressor represents the next generation of centrifugal superchargers; they exhibit a higher energy-efficiency level than any other, they are operational at higher RPM levels and also feature a new and completely silent ball bearing planetary drive system.

Due to its 80% energy-efficiency, the amount of energy consumed by the compressor is returned with both a quicker and greater build-up of air pressure. The general difference when compared to alternative supercharging systems is about 10 % in efficiency, however the increase in the low end of the rev band is even greater, putting the boost pressure of the Rotrex compressor above that of any screw compressor in the RPM range of interest to performance driving. Also the very high RPM capability (120 000 RPM) of the Rotrex turbine itself allows for an extremely high maximum air pressure very early in the rev band (1.4 bar at 5000 RPM), in all creating a spread of power and torque across the rev band unmatched by any competitor.

Koenigsegg’s engineers choose to equip the CCR with a dual set of specially adopted smaller Rotrex compressors, for several good reasons. First and foremost; a smaller compressor is operational at a broader RPM range, bringing greater boost pressure at both low and high revs. This is due to complex aerodynamics around the turbine; at low RPM a greater boost is obtained since fewer pockets of air is allowed to slip through unpacked by the rotor blades. At the high rev end the smaller diameter of the rotor blades brings down the speed at which the tips of the blades collides with the air, a speed that cannot be allowed to reach near speed of sound, at which efficient compression is no longer possible.

Using twin parallel Rotrex compressors means a doubling of these small size benefits; double the effect of low rev pressure, double the quantity of air that is propelled into the intercooler at any given point during acceleration, and also a far greater maximum boost pressure. The loss of energy suffered by pulling an extra compressor is minimal, amounting to less than 1.5 % of the total kinetic energy.

Though equal in size and weight to traditional turbo chargers, the twin Rotrex compressor lay-out, combined with the innovative Koenigsegg Response Boost Control (RBC) system, creates a model for supercharging with equal efficiency to any exhaust driven turbo configuration, and that with absolutely zero throttling lag time.

ARTICLES:HOTROD:The Rotrex Supercharger Revolution

PDFs:Rotrex C30: Super Charger Technical Specs Sheet (PDF)Rotrex Super Charger Info (PDF)Rotrex C-Type: Super Charger Install and Maintenance (PDF)


Modified by rcabrita at 11:49 PM 4/3/2009