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Interesting, although this pre-spooling concept is not exactly new...
I've seen CryO2 being used as the high pressure fluid medium (instead of air) in some drag applications... I know, I know, mostly everyone uses CryO2 for intake cooling... but it has been used in several different ways including releasing it directly into the exhaust system, pre-turbine inlet, just like with this Volvo concept. And also even used to directly spool the turbo as with the CryoCharger...
But I like the compressed air concept much better, since it's "free", and it's a sustainable system... I do wonder what the working pressure will be???
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