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What is the speed of turbocharger?

Updated: 12/17/2022
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8y ago

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The speed of the turbo is the rpm that it is spinning at, and it doesn't have anything to do with engine rpm. Depending on the size of the turbocharger, it has an operating range that it is most efficient at and it also has a MAX rpm. If you look at a compressor map there are arches running across the map, at the end of the arches is the turbo speed. This is rpm that the turbo would be turning at for that P/R (pressure ratio) and flow rate( amount of air the turbo is putting out, lbs/min, kg/s). Max rpm is limited by the speed of sound and the material the compressor wheel is made of . The rpms are usually expressed in tens of thousands of rpms and might be labels with a "K". Small turbos like a garrett T12 have a max rpm of 220,000rpms, while large turbos like the GT60 has a max speed of just 77,921rpms.

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Q: What is the speed of turbocharger?
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