Features of the fastest pressure growth point during compression stroke

• Autorzy: Yeryganov O. , Varbanets R.

Identyfikatory

DOI

10.29354/diag/89729

• Języki publikacji: EN

Abstrakty

EN

The article contains description of method, which enables to synchronize indicator diagram of diesel engine using the parameters of fastest pressure growth point during compression stroke. It means calculation of this point position relatively to top dead center (TDC). At first, experimentally obtained data has to be smoothed by the Butterworth low pass filter. Afterwards, assumed that the process is stationary, compression stroke is expressed by equation of polytropic compression. Then the first and the second pressure derivatives are determined by crank angle. The condition, when the second pressure derivative by crank angle equals zero, enables us to find the position of the fastest pressure growth point relatively to TDC. The angle, which was found in such a way, is used later as first approximation for finding the TDC position with adequate accuracy. It’s also shown how to calculate the volume of compression chamber (compression ratio) using parameters of this point. Results of the calculation are compared with experimentally obtained data.

Słowa kluczowe

EN

top dead centre; point of fastest pressure growth; polytropic compression; pressure derivative by crank angle

PL

maksimum przyrostu ciśnienia; górny martwy punkt; sprężanie politropowe; przyrost ciśnienia w zależności od kąta obrotu

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2018
• Tom: Vol. 19, No. 2
• Strony: 71--76
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Yeryganov O.

• Odessa National Maritime University, Mechnikov street, 34, Odessa, Ukraine, 65029

autor

Varbanets R.

• Odessa National Maritime University, Mechnikov street, 34, Odessa, Ukraine, 65029

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).