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Warianty tytułu
Języki publikacji
Abstrakty
: This paper describes the engineering structure and functions of a typical solenoid valve used in hydraulic mechanisms that are based on variable camshaft timing (VCT). The main operating parameters and functional utility coefficients of hydraulic solenoid valves have been defined. Tests of 10 reference and 10 prototype valves were run on a test stand for a comparative assessment of both engineering concepts based on Welch and Mann–Whitney statistical tests of the mean values of designated coefficients. The studies identified differences between both designs, and the obtained research material was used as an input to improve the performance of the engineered concept. To perform a final evaluation of the effects that arise as a result of changes introduced to some functional–operational coefficients, additional tests are required to be run on an engine testbed. The applied test methodology may then be used for control and verification tests of the valves, which can further be used in VCT technology.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
74--81
Opis fizyczny
Bibliogr. 18 poz., rys., tab., wykr.
Twórcy
autor
- Faculty of Mechanical Engineering, Bialystok University of Technology, ul. Wiejska 45C, 15-351 Białystok, Poland
autor
- Faculty of Mechanical Engineering, Bialystok University of Technology, ul. Wiejska 45C, 15-351 Białystok, Poland
Bibliografia
- 1. Boguszewicz P., Czyż S. (2016), Influence of Valves Timing and Valves Lifts on Piston Engine Cylinder Filling (in Polish), Prace Instytutu Lotnictwa, 2016,3, 329-345.
- 2. Chauvin J., Petit N. (2007), Experimental control of variable cam timing actuators, IFAC Proceedings Volumes, Vol. 40, 10, 95-101.
- 3. D'Agostino R. B., Belanger A., D'Agostino R. B. Jr. (1990), A suggestion for using powerful and informative tests of normality, The American Statistician, Vol. 44, 4, 316-321.
- 4. Dresner T.,Barkan P. (1989), A review and classification of variable valve timing mechanisms, SAE Technical Paper 890674.
- 5. Gray C. (1988), A review of variable engine valve timing, SAE Technical Paper 880386,
- 6. Hong H., Parvate-Patil G. B., Gordon B. (2004), Review and analysis of variable valve timing strategies - eight ways to approach, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 218, 10, 1179–1200.
- 7. IATF 16949: 2016. Quality management system for organizations in the automotive industry.
- 8. INA-Schaeffler KG (2004), Testing Cam Phaser Systems, Technical publication, Germany
- 9. ISO-16750-1: 2006. Road vehicles - Environmental conditions and testing for electrical and electronic equipment, Part 1: General.
- 10. Jankovic M., Magner S. W. (2002), Variable cam timing: Consequences to automotive engine control design, IFAC Proceedings Volumes, Vol. 35, 1, 271-276.
- 11. Kanji G.P. (2006), 100 Statistical Tests, third ed., Sage Publications, London,
- 12. Kosuke N., Hiroyuki K.. Kazuya K. (2006), Valve timing and valve lift control mechanism for engines, Mechatronics, Vol. 16, 2, 121-129.
- 13. Marx A., Backes C., Meese E., Lenhof H. P., Keller A. (2016), EDISON-WMW: Exact dynamic programming solution of the WilcoxonMann-Whitney test, Genomics Proteomics Bioinformatics, Vol. 14, 1, 55-61.
- 14. Real statistics using Excel. http://www.real-statistics.com/testsnormality-and-symmetry/statistical-tests-normality-symmetry/dagostinopearson-test/ (accessed 29 July 2019)
- 15. Ren Z. (2011), System identification and control design for internal combustion engine variable valve timing systems, PhD Thesis, Michigan State University, Mechanical Engineering
- 16. Stein R., Galietti K., Leone T. (1995), Dual equal VCT – a variable camshaft timing strategy for improved fuel economy and emissions, SAE Technical Paper 950975.
- 17. Walpole R. E., Myers R. H., Myers S. L. (2012), Probability end statistics for engineers and scientists, ninth ed., Boston, Prentice-Hall.
- 18. Welch B. L. (1947), The generalization of "Student's" problem when several different population variances are involved, Biometrika, Vol. 34, 1-2, 28-35.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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