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Ceramic Coated Turbos
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10-25-2013, 07:50 AM | #1 |
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Ceramic Coated Turbos
Quiet alot of talk lately about coating the turbos with a layer of ceramic layer, popular dynamics had a nice article on the topic based on the Audi RS7 Turbos that are Ceramic coated, any benefits for Rob/Vargas/FFTEC from this? possible future option? gains to be expected?
Quote: "the portion of the turbo's aluminum housing that meets the compressor wheel, and has been coated with a layer of ceramic. That seemingly innocuous ceramic bit reduces the clearance between the housing and the compressor wheel, helping yield more boost as internal rpms approach their absolute maximum." http://www.popularmechanics.com/cars...udi-rs7-engine
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10-25-2013, 08:15 AM | #2 |
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Its odd that they reference clearance as the only advantage to adding ceramic. If that's the case, just give the aluminum less clearing (unless they're worried about expansion of the metal with extreme temperatures).
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10-25-2013, 04:14 PM | #3 |
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Tightening the clearance between the housing and compressor improves performance and efficiency, but the clearance is needed to keep the compressor from hitting the housing if the turbo vibrates or wobbles at high speeds. Tighter clearances means a greater chance the wheels will touch down and ruin the turbo. Ball bearing turbos can have tighter clearances since the bearings have tighter control on the wheels, and ceramic ball bearings are less affected by heat, so they can be slightly tighter still. That's why I like PTE turbos, they use ceramic ball bearings.
If someone wanted to try this, I'd recommend simply painting the inside of the housing with several thin coats of flat black high temp engine paint. If the wheels touch down the paint will simply scrape off more readily than a hard ceramic coating. |
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10-25-2013, 05:18 PM | #4 | |
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10-25-2013, 05:59 PM | #6 |
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http://www.freshpatents.com/Ceramic-...0060285972.php
That should clear it up for you. Ceramics aren't just for heat rejection. We use coatings similar to the one in the link on LOTS of things at work. Edit...you should really know this sort of stuff if you're going to be "upgrading" and selling turbos Tony. Just food for thought. |
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10-25-2013, 06:04 PM | #7 | |
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10-25-2013, 06:51 PM | #8 | |
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Edit... You really should read a post more carefully before letting everyone know how smart you are, yet couldn't quite grasp what I was getting at. Food for thought. Ps, I read your link and since we service many types of turbines here not just automotive, we know of this technology. It is not feasible for turbos in the price range you play in, nor would it do anything to increase power on these engines, we have PLENTY of air flow, we do not have enough exhaust flow, again very simple turbo theory that has been discussed at length, yet you cant understand it. Happy Friday |
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10-25-2013, 10:36 PM | #9 |
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^^I'm gonna go ahead and say pwrhungry has been pwr pwned.
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10-25-2013, 11:47 PM | #10 |
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10-26-2013, 01:07 AM | #11 | |
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10-26-2013, 01:57 AM | #12 |
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RS7 really ins't in n54 price range.
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10-26-2013, 07:37 AM | #13 | |
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Go pull this kinda talk at you local civic forum why don't you?
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10-26-2013, 10:04 AM | #14 |
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We're not talking about the entire car, just a ceramic coating applied to maybe a total of 8 square inches of compressor housing between the two turbos. If you wanted to have this done, it wouldn't be that pricey...there are some of us who shelled out thousands for the ST kits or the VTTS3s. But, as Tony DID point out, it's not going to make a hell of a big difference. In most jet engine applications you'll see approximately 1% increase in efficiency, which is huge for us(aero *******, but would translate to very little for us(car guys).
Edit: why is aero space (aero******* when spelled correctly as one word blocked out? |
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10-26-2013, 11:30 AM | #15 | |
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Technologies in the aero space industry my self in CMC's / LEAP Powerplants. Here is a good article: http://www.gereports.com/next-gen-ceramics/ Last edited by GreekMaverick; 10-26-2013 at 11:40 AM.. |
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10-26-2013, 11:40 AM | #16 | |
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10-26-2013, 11:48 AM | #17 | |
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