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Application of Low-Cost Transducers for Indirect In-Cylinder Pressure Measurements
- Enrico Corti - Universita degli Studi di Bologna Scuola di Ingegneria e Architettura, DIN, Italy ,
- Lorenzo Raggini - Universita degli Studi di Bologna Scuola di Ingegneria e Architettura, Italy ,
- Alessandro Rossi - Università di Bologna Scuola di Ingegneria e Architettura, Italy ,
- Alessandro Brusa - University of Bologna, Italy ,
- Luca Solieri - Alma Automotive srl, Italy ,
- Daire Corrigan - Ferrari Auto SpA, UK ,
- Nicola Silvestri - Ferrari Auto SpA, Italy ,
- Matteo Cucchi - Ferrari Auto SpA, Italy
Journal Article
03-16-02-0013
ISSN: 1946-3936, e-ISSN: 1946-3944
Sector:
Citation:
Corti, E., Raggini, L., Rossi, A., Brusa, A. et al., "Application of Low-Cost Transducers for Indirect In-Cylinder Pressure Measurements," SAE Int. J. Engines 16(2):213-230, 2023, https://doi.org/10.4271/03-16-02-0013.
Language:
English
Abstract:
The aim of this work is to present the results achieved in the evaluation of
combustion metrics using low-cost sensors for the indirect measurement of
cylinder pressure. The developed transducers are piezoelectric rings placed
under the spark plugs. Tests were carried out on three different engines running
in various speed and load conditions. The article shows the characteristics of
the signals generated by the piezo-ring sensors, compared to those coming from
laboratory-grade pressure transducers: focus is to assess the achievable
accuracy in the determination of frequently used combustion metrics, such as
those related to knock intensity (Maximum Amplitude of Pressure Oscillations,
MAPO), combustion phasing (MFB10, MFB50, …), and peak
pressure. Despite some issues related to the variation in sensitivity
(temperature effect) to mechanical noise at high engine speeds and to signal
deviation from the actual cylinder pressure trace in some portions of the engine
cycle, the article shows that combustion metrics evaluated using low-cost
sensors are meant to be used for combustion feedback control.