Measurement and Evaluation of Functional and Operational Coefficients of Hydraulic Solenoid Valve Prototypes Used for Variable Valve Timing Control in Combustion Engines

Kalinowski, Marcin; Kamiński, Zbigniew

doi:10.2478/ama-2021-0011

Abstract

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.

References

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, 329-345.10.5604/05096669.1226204
Search in Google Scholar Back to article
2. Chauvin J., Petit N. (2007), Experimental control of variable cam timing actuators, IFAC Proceedings Volumes, Vol. 40, 10, 95-101.
Search in Google Scholar Back to article
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.
Search in Google Scholar Back to article
4. Dresner T.,Barkan P. (1989), A review and classification of variable valve timing mechanisms, SAE Technical Paper 890674.10.4271/890674
Search in Google Scholar Back to article
5. Gray C. (1988), A review of variable engine valve timing, SAE Technical Paper 880386,10.4271/880386
Search in Google Scholar Back to article
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.
Search in Google Scholar Back to article
7. IATF 16949: 2016. Quality management system for organizations in the automotive industry.
Search in Google Scholar Back to article
8. INA-Schaeffler KG (2004), Testing Cam Phaser Systems, Technical publication, Germany
Search in Google Scholar Back to article
9. ISO-16750-1: 2006. Road vehicles - Environmental conditions and testing for electrical and electronic equipment, Part 1: General.
Search in Google Scholar Back to article
10. Jankovic M., Magner S. W. (2002), Variable cam timing: Consequences to automotive engine control design, IFAC Proceedings Volumes, Vol. 35, 1, 271-276.
Search in Google Scholar Back to article
11. Kanji G.P. (2006), 100 Statistical Tests, third ed., Sage Publications, London,10.4135/9781849208499
Search in Google Scholar Back to article
12. Kosuke N., Hiroyuki K.. Kazuya K. (2006), Valve timing and valve lift control mechanism for engines, Mechatronics, Vol. 16, 2, 121-129.
Search in Google Scholar Back to article
13. Marx A., Backes C., Meese E., Lenhof H. P., Keller A. (2016), EDISON-WMW: Exact dynamic programming solution of the Wilcoxon-Mann-Whitney test, Genomics Proteomics Bioinformatics, Vol. 14, 1, 55-61.
Search in Google Scholar Back to article
14. Real statistics using Excel. http://www.real-statistics.com/tests-normality-and-symmetry/statistical-tests-normality-symmetry/dagostino-pearson-test/ (accessed 29 July 2019)
Search in Google Scholar Back to article
15. Ren Z. (2011), System identification and control design for internal combustion engine variable valve timing systems, PhD Thesis, Michigan State University, Mechanical Engineering
Search in Google Scholar Back to article
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 950975.10.4271/950975
Search in Google Scholar Back to article
17. Walpole R. E., Myers R. H., Myers S. L. (2012), Probability end statistics for engineers and scientists, ninth ed., Boston, Prentice-Hall.
Search in Google Scholar Back to article
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.
Search in Google Scholar Back to article

Measurement and Evaluation of Functional and Operational Coefficients of Hydraulic Solenoid Valve Prototypes Used for Variable Valve Timing Control in Combustion Engines

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