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Old 05-09-2022, 03:54 PM   #1 (permalink)
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
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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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