Comparison of the powers of energy losses in a variable capacity displacement pump determined without or with taking into account the power of hydraulic oil compression

• Autorzy: Paszota Z.
• Języki publikacji: EN

Abstrakty

EN

Powers of energy losses in a variable capacity displacement pump are compared with or without taking into account the power of hydraulic oil compression. Evaluation of power of liquid compression in the pump was made possible by the use of method, proposed by the Author, of determining the degree of liquid aeration in the pump . In the method of determining the liquid aeration in the pump and of powers of volumetric losses of liquid compression a simplified formula (qPvc . ΔpPi)/2 was used describing the field of indicated work of volumetric losses qPvc of liquid compression during one shaft revolution at indicated increase ΔpPi of pressure in the chambers. Three methods were used for comparing the sum of powers of volumetric losses ΔPPvl due to leakage and ΔPPvc of compression and also of mechanical losses resulting from increase ΔpPi of indicated pressure in the working chambers.

Słowa kluczowe

EN

hydrostatic drive; variable capacity displacement pump; volumetric losses of hydraulic oil compression

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2015
• Tom: nr 2
• Strony: 32--43
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Paszota Z.

• Gdańsk University of Technology, 11/12 Narutowicza St., 80 - 233 Gdańsk, Poland

Bibliografia

• 1. Paszota Z.: Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive. Part I Energy losses in a drive system, volumetric losses in a pump //International Scientific-Technical Conference Hydraulics and Pneumatics, Wrocław, 16 – 18 maja 2012 / Ośrodek Doskonalenia Kadr SIMP - Wrocław : ODK SIMP we Wrocławiu, 2012
• 2. Paszota Z.: Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive. Part II Mechanical losses in a pump //International Scientific-Technical Conference Hydraulics and Pneumatics, Wrocław, 16 – 18 maja 2012 / Ośrodek Doskonalenia Kadr SIMP - Wrocław: ODK SIMP we Wrocławiu, 2012
• 3. Paszota Z.: Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive. Part I Energy losses in a drive system, volumetric losses in a pump// Polish Maritime Research, 2/2012, Vol. 19
• 4. [4] Paszota Z.: Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive. Part II Mechanical losses in a pump // Polish Maritime Research, 3/2012, Vol.19
• 5. Paszota Z.: Theoretical and mathematical models of the torque of mechanical losses in the pump used in a hydrostatic drive (in Polish). Chapter in the monograph: „Research, design, production and operation of hydraulic systems” (in Polish) Adam Klich, Antoni Kozieł and Edward Palczak editors. „Cylinder” Library. „Komag” Mining Mechanisation Centre, Gliwice, 2011
• 6. Paszota Z.: Theoretical and mathematical models of the torque of mechanical losses in the pump used in a hydrostatic drive (in Polish). „Napędy i sterowanie”, scientific monthly, 10/2011
• 7. Paszota Z.: Theoretical models of the torque of mechanical losses in the pump used in a hydrostatic drive Polish Maritime Research, 4 / 2011, Vol. 18
• 8. Koralewski J.: Effect of the liquid viscosity on the energy characteristics of variable capacity piston pump (in Polish). Doctor dissertation (continued). Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology
• 9. Koralewski J.: Effect of oil viscosity and compressibility on determination of volumetric losses in a variable capacity piston pump (in Polish). Paper submitted to the „Cylinder” 2013 Conference. Centrum Mechanizacji Gornictwa „Komag”, Gliwice, 2013
• 10. Paszota Z.: Method of determining the degree of liquid aeration in a variable capacity displacement pump Polish Maritime Research, 3 / 2013, Vol. 20
• 11. Paszota Z.: Method of determining the degree of liquid aeration in a variable capacity displacement pump (in Polish). „Napędy i sterowanie”, scientific monthly, 11/2013
• 12. Koralewski J.: Influence of viscosity and compressibility of aerated oil on determination of volumetric losses in a variable capacity piston pump (in Polish). „Napędy i sterowanie”, scientific monthly, 11/2013
• 13. Koralewski J.: Influence of viscosity and compressibility of aerated oil on determination of volumetric losses in a variable capacity piston pump Polish Maritime Research, 4 / 2013, Vol. 20
• 14. Paszota Z.: Mathematical model defining volumetric losses of hydraulic oil compression in a variable capacity displacement pump (in Polish) „Napędy i sterowanie”, scientific monthly, 10/2014
• 15. Paszota Z.: Mathematical model defining volumetric losses of hydraulic oil compression in a variable capacity displacement pump Paper submitted for publication in the “Polish Maritime Research” journal