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Old 05-09-2022, 03:54 PM   #1 (permalink)
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Turbo blanket

I came across Engineering Explained's video


Then I checked Ecomodder and turbo blankets are hardly mentioned, so here we go!

Something I haven't found in my very shallow search is whether the benefits of turbo blankets are the same for both diesels and gassers? I mean, yes, for either they insulate the hot side of the turbo, allowing it to spin faster and get a bit more boost... EE's vid uses a VW gasser as an example, but I haven't found much about diesels.

My turbodiesel already has a partial cover over the turbo, but I don't know whether it is to insulate, or just to protect from the heat? Would adding insulation give noticeable results during hypermiling, or only during high-performance driving?

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[Old] Piwoslaw's Peugeot 307sw modding thread
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Old 05-10-2022, 04:03 PM   #2 (permalink)
It's all about Diesel
 
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The only turbo blankets that I have ever seen were more of a protective device to prevent a mechanic to burn a hand than something actually meant to increase thermal efficiency of a turbocharging setup, yet a thermal insulation tape around the exhaust pipes used to be a quite common performance-oriented mod which ended up effectively helping to keep the engine bay temperatures under control.
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Old 05-11-2022, 10:00 AM   #3 (permalink)
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Back in the day there were two theories, nothing I have seen fully researched. #1: keeping the turbo input hot as possible gives the turbo more efficiency and as a result more boost since it is supposed to be a thermal driven device. #2 keeping the exhaust hot aids flow out of the system and aids sensor function. Insulation on both keeps the engine bay cooler which again, in theory, promotes charge density.
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Old 05-15-2022, 02:00 PM   #4 (permalink)
It's all about Diesel
 
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Not sure about aiding sensors function, but the catalyst may reach its optimum temperature sooner when heat is retained at the exhaust flow instead of irradiating through the entire engine bay.
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Old 01-28-2024, 01:09 AM   #5 (permalink)
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Quote:
Originally Posted by Piotrsko View Post
Insulation on both keeps the engine bay cooler which again, in theory, promotes charge density.
But aren't we, Ecomodders, already struggling with keeping the engine warm, so a warmer engine bay would aid that?
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[Old] Piwoslaw's Peugeot 307sw modding thread
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Old 01-28-2024, 10:31 AM   #6 (permalink)
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Yes it's hard to keep the engine warm and the intake air cold but not impossible. Snorkel style intake for one, ram air from rearward facing scoops just under the windshield....

Other than building a box, not sure what would help the engine
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Old 01-28-2024, 11:04 AM   #7 (permalink)
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I run a manifold and turbo blanket on my Talon during the Summer and hot Fall and Spring days. I pull heat off the lower side of my Exhaust manifold to increase the IAT'S up to 250*F. for FE.

One thing I did notice is that it does lower the life of the turbine housing. After three years the turbine housing developed cracks.
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Old 01-28-2024, 06:11 PM   #8 (permalink)
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three turbos in the pickup bed
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Old 01-30-2024, 10:15 AM   #9 (permalink)
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Here is one of the turbine housings that cracked that I was talking about. Click image for larger version

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Old 02-05-2024, 07:15 PM   #10 (permalink)
It's all about Diesel
 
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I remember reading articles about remotely-mounted turbochargers and, besides the lower heat irradiation through the engine bay, which might be quite a PITA to overcome in some small cars, the extra piping required actually worked in a way similar to the intercooler of a normal turbocharging setup, as it increased the surface area for heat exchange and the longer distance provided for a natural cooling of the intake charge.

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