28/08/2026
The Power of Full-Surface Temperature Mapping of Turbocharger components.
How do you accurately measure temperatures across a turbocharger turbine wheel operating in demanding conditions?
In 2024, SCS collaborated with Garrett - Advancing Motion and demonstrated how Thermal History Coatings (THCs) generated high-resolution (1โ2 mm) surface temperature maps across turbocharger turbine wheels following engine testing.
The study showed that THC-derived temperature profiles reflected the operating conditions of each test, with the hottest temperatures occurring at the blade leading edges and reducing towards the hub. Initial comparisons with Conjugate Heat Transfer (CHT) simulations were also promising, with the majority of measurement points on one turbine wheel differing by less than 10ยฐC from the predicted temperatures.
The research concluded that Thermal History Coating technology successfully profiled temperatures on turbocharger turbine wheels and highlighted its potential for future turbocharger development, including E-Turbo applications and other difficult-to-access components.
Read the paper: https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2024/88018/V009T18A007/1204412
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