Coaxial Thermal Probe for High-Frequency Periodic Response in an IC Engine Test Rig

Autor: Niranjan Sahoo, Vinayak Kulkarni, Anil Kumar Rout, Pankaj Kalita, Santosh Kumar Hotta
Rok vydání: 2020
Předmět:
Zdroj: Proceedings of the 7th International Conference on Advances in Energy Research ISBN: 9789811559549
DOI: 10.1007/978-981-15-5955-6_76
Popis: Coaxial Surface Junction Thermocouples (CSJTs) are efficient thermal probes, mostly used for capturing transient response characteristics in case of unsteady flows. For the present study, a K-type (Chromel-Alumel) CSJT thermal probe has been fabricated in-house and its response characteristics have been tested in an IC engine based experiment. The probe is mounted at the exhaust of a variable compression research engine running in petrol mode at compression ratio 10:1. The transient temperature is recorded for 6 s. After post-processing of the signals, cyclic repeatability of the engine cycles are observed. From the recorded temperature history, time taken by the engine for completion of one complete cycle is calculated for two different RPMs (1500, 1700) and compared with the theoretical cycle time calculated analytically from the recorded RPM by the engine sensor. Appreciable matching between the cycle times is observed. Therefore, the fabricated CSJT is quite fast in capturing the transient phenomena and can be used as a temperature sensor for capturing transient phenomena in IC engines. The application can be extended to capture other transient phenomena in case of unsteady flows.
Databáze: OpenAIRE