Evaluation of knock intensity using wide-band optical signal from the combustion chamber

• Autorzy: Piernikarski D.
• Języki publikacji: EN

Abstrakty

EN

The paper evaluates the possibility of detection and evaluation of knock intensity using wide-band optical signal obtained from the combustion chamber of the gasoline engine. Preliminary data analysis confirmed existence of strong, statistically significant correlations between signals of indicated pressure and intensity of optical emission, and it is expected that optical signal can be successfully used for detection of knocking combustion. As knocking combustion is associated with certain frequencies of successive modes of acoustic vibrations in the combustion chamber, detection of knock and evaluation of its intensity required filtration of optical signal eliminating constant components and high-frequency noise. Knock intensity was characterized by “peak intensity of optical radiation” – defined as positive value of first derivative obtained for the filtered signal. This parameter gives useful quantitative information regarding the intensity of knocking combustion. Data analysis has shown, that occurrence of knock resulted in rapid changes in peak-to-peak amplitudes of the filtered optical signal. Further evaluation of signal properties allows for more precise description of knocking phenomena and of its intensity.

Słowa kluczowe

EN

knock; optical radiation; knock intensity; optical combustion sensor; waveguides

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2006
• Tom: Vol. 13, No. 2
• Strony: 371--379
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Piernikarski D.

• Lublin University of Technology Department of Internal Combustion Engines and Transportation Poland, 20-618 Lublin, 36 Nadbystrzycka Str. fax: [phone],

Bibliografia

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