Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps

Hydraulic pumps are positive displacement machines and the primary components of fluid power systems that transform energy from mechanical sources to pressurized oils. The reliability and efficiency of pump components are highly dependent on the tribological characteristics of the sliding parts, whi...

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Autor principal:	Toshiharu KAZAMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	fluid power hydraulics piston pump vane pump gear pump tribology lubrication thermal effect temperature experiment Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/8c7d07511c4845cf8454f1251cb178cc
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spelling	oai:doaj.org-article:8c7d07511c4845cf8454f1251cb178cc2021-11-26T06:25:42ZComparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps2187-974510.1299/mej.14-00542https://doaj.org/article/8c7d07511c4845cf8454f1251cb178cc2015-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/3/2_14-00542/_pdf/-char/enhttps://doaj.org/toc/2187-9745Hydraulic pumps are positive displacement machines and the primary components of fluid power systems that transform energy from mechanical sources to pressurized oils. The reliability and efficiency of pump components are highly dependent on the tribological characteristics of the sliding parts, which perform bearing and sealing functions. Higher pressurization and increased compactness result in higher contact pressure and oil temperature, which can cause catastrophic damage to the components and severe deterioration of the oils. Three representative hydraulic pumps—including a swash plate axial piston pump, a pressure-balance vane pump, and an external gear pump—were tested under real operating conditions to determine their thermal effects. Discharge pressures up to 21 MPa and rotational speeds up to 50 s-1 were tested. Hydraulic oils with viscosity grades of 22, 32, and 46 were used at 30°C-50°C. The thermocouples were embedded in the cylinder block, swash plate, and valve plate of the piston pump, cam ring and side plate of the vane pump, and the side plate of the gear pump. Platinum resistance thermometers were placed in the conduits close to the suction and discharge ports of the pumps. The temperatures of the sliding parts and working oils were measured simultaneously. Results indicated that for all pump tests, temperatures increased almost monotonically as the discharge pressure increased. The temperatures of the sliding parts were always higher than those of the discharge oils. With the piston pump, the temperatures at the locations corresponding to the discharge port of the swash plate and valve plate were higher. In contrast, with the vane pump, the temperature at the location on the cam ring closest to the suction port was highest.Toshiharu KAZAMAThe Japan Society of Mechanical Engineersarticlefluid powerhydraulicspiston pumpvane pumpgear pumptribologylubricationthermal effecttemperatureexperimentMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 3, Pp 14-00542-14-00542 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluid power hydraulics piston pump vane pump gear pump tribology lubrication thermal effect temperature experiment Mechanical engineering and machinery TJ1-1570
spellingShingle	fluid power hydraulics piston pump vane pump gear pump tribology lubrication thermal effect temperature experiment Mechanical engineering and machinery TJ1-1570 Toshiharu KAZAMA Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
description	Hydraulic pumps are positive displacement machines and the primary components of fluid power systems that transform energy from mechanical sources to pressurized oils. The reliability and efficiency of pump components are highly dependent on the tribological characteristics of the sliding parts, which perform bearing and sealing functions. Higher pressurization and increased compactness result in higher contact pressure and oil temperature, which can cause catastrophic damage to the components and severe deterioration of the oils. Three representative hydraulic pumps—including a swash plate axial piston pump, a pressure-balance vane pump, and an external gear pump—were tested under real operating conditions to determine their thermal effects. Discharge pressures up to 21 MPa and rotational speeds up to 50 s-1 were tested. Hydraulic oils with viscosity grades of 22, 32, and 46 were used at 30°C-50°C. The thermocouples were embedded in the cylinder block, swash plate, and valve plate of the piston pump, cam ring and side plate of the vane pump, and the side plate of the gear pump. Platinum resistance thermometers were placed in the conduits close to the suction and discharge ports of the pumps. The temperatures of the sliding parts and working oils were measured simultaneously. Results indicated that for all pump tests, temperatures increased almost monotonically as the discharge pressure increased. The temperatures of the sliding parts were always higher than those of the discharge oils. With the piston pump, the temperatures at the locations corresponding to the discharge port of the swash plate and valve plate were higher. In contrast, with the vane pump, the temperature at the location on the cam ring closest to the suction port was highest.
format	article
author	Toshiharu KAZAMA
author_facet	Toshiharu KAZAMA
author_sort	Toshiharu KAZAMA
title	Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
title_short	Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
title_full	Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
title_fullStr	Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
title_full_unstemmed	Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
title_sort	comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/8c7d07511c4845cf8454f1251cb178cc
work_keys_str_mv	AT toshiharukazama comparisonoftemperaturemeasurementsandthermalcharacteristicsofhydraulicpistonvaneandgearpumps
_version_	1718409792166297600

Comparison of temperature measurements and thermal characteristics of hydraulic piston, vane, and gear pumps

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