Verification the mathematical model of energy efficiency of hydraulic system

• Autorzy: Skorek G.

Identyfikatory

DOI

10.5604/01.3001.0010.3093

• Języki publikacji: EN

Abstrakty

EN

The article presents the laboratory verification of the mathematical description of losses and energy efficiency of the hydraulic transmission with proportionally controlled cylinder supplied by the constant capacity pump in the system of constant pressure is presented. The axial piston pump with pivoting rotor supplied to the system consisted of proportional directional control valve and linear motor – hydraulic cylinder at constant pressure, cooperating with an overflow valve. The choice of the analysed system is not accidental. There is always a view in literature about the very limited energy capabilities of a proportional control system. For this purpose, measurement methods were developed and a test stand was adapted. It consists of two systems: tested and loading. Measurements during the tests were recorded up to date on the computer hard disk. In order to allow for comparison of the total efficiency of the system with the efficiency derived from the simulation, the ki coefficients determining the energy losses of the individual components were calculated. Investigations have shown a high convergence mathematical description of energy losses in the elements of the system efficiency and reality. This allows accurate simulation determining the energy efficiency of the field at every point in its operation, i.e. at any speed and any load-controlled hydraulic cylinder. The speed and load range of the hydraulic cylinder can also be accurately simulated.

Słowa kluczowe

EN

hydraulic systems; hydraulic transmission; energy efficiency; constant capacity pump; energy losses; mathematical model

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2017
• Tom: Vol. 24, No. 3
• Strony: 275--281
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Skorek G.

• Gdynia Maritime University Department of Engineering Sciences Morska Street 81-87, 81-225 Gdynia, Poland tel.: [phone], fax: [phone]

Bibliografia

• 1. Paszota, Z., Energy losses in hydrostatic drive, Monography, LAP Lambert, Acadamic Publishing, 2016.
• 2. Paszota, Z., Aspects Energétiques des Transmissions Hydrostatiques, Monography, Gdansk Univeristy of Technology Publishing, 2002.
• 3. Paszota, Z., Układ hydrauliczny z rozdzielaczem dławiącym – model sprawności energetycznej, Seminar material Hydropneumatyka’96, World Trade Center Gdynia Expo Ltd., 23-25.10.1996, s. 1-8, 1996.
• 4. Skorek, G., Charakterystyki energetyczne układu hydraulicznego o sterowaniu proporcjonalnym siłownika zasilanego pompą o stałej wydajności w systemie stałego i zmiennego ciśnienia, PhD Thesis, 2008.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).