Experimental assessment of a methodology for the indirect in-cylinder pressure evaluation in four-stroke internal combustion engines

Autor: Giovanni Ferrara, Alessandro Bianchini, Giovanni Vichi, Luca Romani, Alessandro Bellissima
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Control and Optimization
Computer science
In-cylinder pressure
Indirect measurement
Knock
MBF50
Misfire
Not intrusive
Pressure peak
Strain washer
Control and Optimization
internal combustion engine
020209 energy
Energy Engineering and Power Technology
MBF50
02 engineering and technology
Four-stroke engine
Combustion
lcsh:Technology
Automotive engineering
strain washer
pressure peak
0203 mechanical engineering
Cylinder head
Robustness (computer science)
0202 electrical engineering
electronic engineering
information engineering
Electrical and Electronic Engineering
Engineering (miscellaneous)
indirect measurement
lcsh:T
Renewable Energy
Sustainability and the Environment
System of measurement
Durability
knock
misfire
in-cylinder pressure
020303 mechanical engineering & transports
Internal combustion engine
not intrusive
Dynamic pressure
Energy (miscellaneous)
Zdroj: Energies
Volume 11
Issue 8
Energies, Vol 11, Iss 8, p 1982 (2018)
Popis: Recent innovations in engine control and diagnostics are providing room for development of innovative combustion approaches (e.g., low-temperature combustion) able to minimize the creation of pollutants. To ensure the constant fulfillment of the prescribed thermodynamic conditions, however, a fast real-time monitoring of the in-cylinder pressure is needed. To this end, dynamic pressure sensors, flush-mounted on the cylinder head, are commonly used. With this approach, the measurement accuracy is high, but the durability is limited by the harsh working conditions. The installation on the cylinder head is also complex. The development of robust and effective indirect measurement systems could then represent the enabler of a further development of this technology. In the present study, an innovative methodology to measure the in-cylinder pressure has been conceived and extensively tested on a four-stroke single-cylinder engine. The proposed approach is based on the analysis of the mechanical stress on the engine studs by means of a piezoelectric strain washer. This solution allows the user for a rapid and cost-effective sensor installation, described in the paper along with the signal post-processing techniques. Results showed good accuracy and robustness of the methodology, making the results of practical use for engine control.
Databáze: OpenAIRE
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