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An In-Cylinder Pressure Referencing Method Based on a Variable Polytropic Coefficient
Technical Paper
2007-01-3535
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The successful monitoring of the combustion process depends on the accurate measurement of in-cylinder pressure. Piezoelectric transducers are normally used for in-cylinder pressure measurement. However, rapid changes in the temperature of the transducer housing and the quartz sensing element can change the transducer offset voltage. Therefore, piezoelectric transducers require referencing the output to the absolute pressure (pegging). This study reviews several pegging methods and proposes a modified method based on a variable polytropic coefficient. The feasibility of the proposed method was validated using both the simulated and the experimental pressure data from a common-rail direct injection (CRDI) diesel engine.
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Citation
Lee, K., Kwon, M., Sunwoo, M., and Yoon, M., "An In-Cylinder Pressure Referencing Method Based on a Variable Polytropic Coefficient," SAE Technical Paper 2007-01-3535, 2007, https://doi.org/10.4271/2007-01-3535.Also In
References
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