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Diagnosing of misfire events in compression-ignition engines with the help of vibroacoustic methods in the aspect of OBD system application in diesel locomotives

Merkisz J., Waligórski M.

Silniki Spalinowe

2008

R. 47, nr 1

3-16

The article concerns the possibilities of use of the method being able to assess of the combustion process and its lack in internal combustion engines of railway traction vehicles, that bases on the use of vibration signal parameters. The paper includes the results of research conducted on the engine test bench with a single cylinder research and compression-ignition engine with direct injection, and tests for the engine of a diesel locomotive in the exploitation condition. Possibility of the vibration signal estimators application to the assessment of a combustion process lack in an internal combustion engine and a high reliability of combustion process diagnostics basing on the above method have been proved.

W artykule omówiono możliwości zastosowania metody oceny procesu spalania i jego braku w silnikach spalinowych pojazdów trakcji szynowej, bazującej na wykorzystaniu parametrów sygnału drganiowego. Zamieszczono w nim wyniki badań przeprowadzonych na hamowni silnikowej na jednocylindrowym badawczym silniku o zapłonie samoczynnym (ZS) z wtryskiem bezpośrednim oraz wyniki badań silnika spalinowego lokomotywy w warunkach jej eksploatacji. Wykazano możliwość zastosowania estymat sygnału drganiowego do oceny braku spalania w silniku spalinowym oraz dużą wiarygodność diagnostyki procesu spalania za pomocą powyższej metody.

Vibroacoustic diagnostics of the combustion process in diesel locomotives engines forthe OBD II strategy purposes

Merkisz J., Waligórski M.

Logistyka

2008

nr 2

The paper concerns the assessment possibilities of use of chosen vibration signal parameters to detect misfires in diesel locomotives engines (non-road vehicles). Methodological assumptions, stages of measurements and vibration signal analyses for a compression-ignition engine of a locomotive have been presented in the paper. Measurement results and concepts of further research regarding the use of vibration methods in on-board diagnostic systems have been presented as well.

Misfire events detection in compression-ignition engines by the use of vibroacoustic diagnostics - application of OBD system requirements in non-road vehicles

Merkisz J., Waligórski M., Kozak M.

Silniki Spalinowe

2007

R. 46, nr SC3

307-318

The paper concerns the assessment possibilities of using the chosen parameters of a vibration signal to detect misfire events in an internal combustion engine. The new method of the misfire detection which is based on the assessment of some vibration signal characteristics has been made and proved to be reliable and precise for the on-board diagnostic of the compression-ignition engine. The following methodological assumptions and stages of measurements and the vibration signals analysis have been presented. The measurements results of the basic research conducted at the engine test stand for a single cylinder research engine have been presented as a first. The authors research works which concerned the possibilities of application vibroacoustic methods in a combustion process assessment of a diesel locomotive engine at the exploitation conditions have been concerned in the paper as well.