How Do Centrifugal Superchargers Work?

What are the pros and cons of centrifugal superchargers?

I bought a centrifugal supercharger for my Honda S2000! In this video we’ll discuss the purpose of superchargers, how centrifugal superchargers work, and the advantages and disadvantages of centrifugal style superchargers.

Centrifugal superchargers act very similarly to turbochargers, however they are driven by the engine rather than the exhaust. The impeller spins as a result of an engine belt spinning a pulley which is connected to the supercharger transmission, which multiplies the gear ratio between the engine and the impeller, allowing for more boost at each engine RPM.

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23 Comments

  1. Post By Engineering Explained

    Part of me didn't want to share this video because I know that going forward I'll have a lot of pressure to get this supercharger install done, and I know it's not going to be happening as soon as folks (including myself) would like. Part of me wanted to share this video so that I would get pressured into actually completing the supercharger install. Hope everyone's having a wonderful day! If you're into scrolling through photos, consider adding my photos to your endless list: https://www.instagram.com/engineeringexplained/

  2. Post By Alberto Knox

    There are a couple variants on this setup that I've been curious to see, but haven't had the time in private life to chase.First is using a geared turbine supercharger driven by a brushless DC motor. Motors, controllers, and high capacity lithium batteries have become much more widely available. This setup, as in F1, would allow boost to be called up as needed rather than as available. Second is a refrigeration circuit as an intercooler. There are a couple ways to regulate a system like that but I simply do not know enough about combustion dynamics to say whether it would be worth the effort.

  3. Post By S2kDude36

    Specifically, which kit did you purchase?  Stage 1, 2, or 3?

  4. Post By kellygnsd

    When you were talking about the centrifugal compressor output curve you showed that is was a linear type curve. Isn't the output characteristics of positive displacement pumps like roots or screw type compressors to linearly increase their output as rpm rises but for centrifugal pumps, aka turbos and centrifugal superchargers outputs increase is proportional to the square of the change in rpm. Your graph doesn't really represent that. Also all this is assuming there is no waste-gating or bypassing going on.

  5. Post By Ben Zer

    What is boost? Does it have a unit like something similar to horsepower or what does it mean ?

  6. Post By daduncker

    Why does he look like a college student and a college professor at the same time?

  7. Post By Ryan Zinck

    Please talk about why you should or should not hit a rev limiter (will this damage the gears in supercharger???)Thanks for the videos

  8. Post By Ian Rodriguez

    Just have Chrisfix come over and put it in

  9. Post By TandemDawgBMG

    How much boost can a stock engine take? – Engine Masters, pretty much explains the last couple minutes of this video.

  10. Post By bugjuicer

    Can imagine another 'pro' is that it'd be cooler because it's not EG powered, so no heat transfer there

  11. Post By Kravity

    B I G G E R A I R

  12. Post By Man from Nantucket

    Would love to pick up a RIPP SC for my Eclipse

  13. Post By Ondřej Kovařík

    Parasitic load would INcrease fuel economy numbers, right? Because even tho you have more power at high revs, efficiency is lower. So you end up using more fuel for same distance.

  14. Post By tankd0g

    Does that kit come with a fuel commander or some kind of flash for your ecu?

  15. Post By tankd0g

    Do you think the inner-cooler will make as much of a difference on a supercharger as it does on a turbo since there's no hot side?

  16. Post By naser eminem

    drivetrain power loss and can we fix it ???????????????

  17. Post By Patrick C.

    I have a similar setup on my Subaru EJ253 (Raptor AU supercharger) – I love it. 200k miles and runs like a champ. Max boost @ max RPM makes it relatively easy power on the engine (high boost at low engine load). The low end torque is good– very noticeable right off the line. My HP curve is very linear but torque is like a shallow mountain or inverted shallow V.

  18. Post By Syl033

    Is there any wastegate?Because I don't quite understand how you release the boost you don't need when releasing the gas pedal. :O

  19. Post By RocKiteman _ 2001

    A while back, I read something online about the development of centrifugal superchargers that are driven by electric motors, versus being driven mechanically by the car's engine. Did you look into this technology, or is it still just in the development stage?

  20. Post By 56Seeker

    I've three questions on this:Given this SC's projected curve, what's the advantage over a turbo?Will it need to relieve pressure on the over run as a turbo does?Seeing as this is, in effect, a belt driven turbo, I wonder if any one's made an exhaust driven rootes?

  21. Post By mr2tuner86

    the other cool thing is that you can build boost just from revving whereas with a turbo there has to be a load on the engine or an antilag system

  22. Post By Peter Werle

    Would this be optimal for a mechanical diesel? Something where you'd want boost low down in the revs?

  23. Post By Julius Malema

    Is there any reason to not just use the smallest pulley you can fit for max boost ?

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