PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2006 | 13 | 2 |
Tytuł artykułu

Irregularity of static working states of ship combustion piston engine

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Variability of static working conditions of combustion engine in the range of higher frequencies has character of noise resulting from phenomena not taken directly into account in test program as well as from features of measuring systems. Knowledge of features of the noise contained in observed static signals is important for determining the representative values taken as static and slow-changeable in conditions of unavoidable disturbances. The tests in question were carried out in the static working conditions of a 6AL 20/24 Sulzer diesel engine, determined by the torque Me = 4.33 kNm and the rotational speed n = 660 min–1. The follo-wing quantities characterizing emission of pollutants contained in exhaust gas in the conditions described by the engine working point : torque, rotational speed and concentrations of carbon oxide, hydrocarbons and nitrogen oxides, were selected for analyses. The tests were performed in the domains of time, process values and frequency. It was stated that the observed runs of the noise generated by phenomena not directly accounted for in combustion engine static test program and by measuring systems, had mainly the character of uncorrelated broad-band normal noise. The results justify a.o. correctness of averaging the measurement results obtained in static conditions as well as synchronous averaging in steady conditions
Słowa kluczowe
EN
Wydawca
-
Rocznik
Tom
13
Numer
2
Opis fizyczny
p.9-14,fig.,ref.
Twórcy
autor
  • Automobiles and Building Machines Faculty, Warsaw University of Technology, Narbutta 84, 02-524 Warsaw, Poland
autor
  • Mechanic-Electric Faculty, Polish Naval University, Smidowicza 69, 81-103 Gdynia, Poland
Bibliografia
  • 1. Bendat J.S., Piersol A.G.: Methods of analysis and measurement of random signals (in Polish) PWN (State Scientific PublishingHouse). Warszawa, 1976
  • 2. Box G.E.P., Hunter W.G., Hunter J.S.: Statistics for experimenters: An introduction to design, data analysis, and model building. John Wiley & Sons. New York, 1978
  • 3. Chłopek Z.: Modeling of exhaust gas emission processes in working conditions of combustion engines (in Polish). Prace Naukowe (Scientific reports), Series „Mechanika”, No. 173.Oficyna Wydawnicza (Publishing House). Warsaw University ofTechnology. Warszawa, 1999
  • 4. Chłopek Z., Piaseczny L.: On role of modeling in scientificresearch (in Polish). Zeszyty Naukowe Akademii Marynarki Wojennej. (Scientific Bulletin of Polish Naval University). Vol.XLII, No. 2(146). Gdynia, 2001
  • 5. Chłopek Z., Piaseczny L.: Remarks about the modeling in science researches. „Eksploatacja i Niezawodność” (Operation and Reliability) No. 4/2001
  • 6. Fisz M.: Calculus of probability and mathematical statistics (in Polish). PWN. Warszawa, 1967
  • 7. Gajek L., Kałuszka M.: Statistical reasoning. Methods and models (in Polish). WNT (Scientific Technical PublishingHouse). Warszawa, 2000
  • 8. Kolmogorov A.: Confidence limits for an unknown distributionfunction. Annals of Mathematical Statistics, No.12 (1941)
  • 9. Lilliefors H. W.: On the Kolmogorov–Smirnov test for normality with mean and variance unknown. Journal of the American Statistical Association, No.63 (1967)
  • 10. Oppenheim A.V., Schafer R.W.: Digital processing of signals (in Polish). WKiŁ (The Publishing House for Traffic Services andCommunication). Warszawa, 1979
  • 11. Otnes R.K., Enochson L.: Numerical analysis of time series (in Polish). WNT. Warszawa, 1978
  • 12. Pearson K.: On the theory of contingency and its relation to association and normal correlation. Drapers’ Company Research Memoirs. Biometric Ser. I. 1904
  • 13. Shapiro S. S., Wilk M. B., Chen H. J.: A comparative study of various tests of normality. Journal of the American Statistical Association, No.64 (1968)
  • 14. Smirnov N. V.: Table for estimating the goodness of fit ofempirical distributions. Annals of Mathematical Statistics, 19 (1948)
  • 15. Sobczyk K.: Methods of statistical dynamics (in Polish). PWN. Warszawa, 1973
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-ca5bd764-152b-4a33-b3a2-c17b4f5d07d6
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.