The development of advanced engine designs with higher performance levels, but with lower environmental impact, requires the use of smarter, easy to use temperature profiling techniques for stationary and dynamic applications. In particular, new turbocharger developments will be the focus to achieve greener engines.
Turbochargers can be used in gasoline, diesel, hybrid, and even natural gas engines, and they are becoming a vital part of car manufacturers’ overall plans to increase efficiency and make engines smaller while maintaining or increasing their power.
The accurate measurement of temperature in the engine is crucial for the calculation of thermal stresses, in particular on turbine wheels. Thermal stresses negatively affect the durability of a turbocharger and, hence, knowing the temperature profile of a specific design is critical.
Robust sensor coatings, deposited by atmospheric plasma spraying, or alternative physical vapour deposition techniques, have the potential to survive many hours in harsh environments and promise data from long-term testing. These types of coatings can also be used as potential warranty tools where maximum temperature limits need to be observed. Using SCS’s thermal history sensors, temperature profiles can be measured with a probe either in situ after the actual operation or after disassembly. A benchtop or hand-held device can be used for the interrogation.
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Example application areas:
- Turbine wheels
- Cylinder of an automotive engine
- Assessing novel valve designs such as hollow-stem and hollow-heads in combination with active cooling liquids
- Exhaust pipes
Benefits of the technology:
- Continuous temperature profiling to detect critical areas
- Enhanced maintenance data
- Accurate operating temperature measurement
- Warranty claims