摘要:
A hydraulic pump (20) comprises a housing (22), a primary discharge outlet (86), an auxiliary discharge outlet (88), a flow control valve (120), a first fluid passageway within the housing (22) passing fluid from a first discharge port (80) to the primary discharge outlet (86), a second fluid passageway within the housing (22) passing fluid from a second discharge port (82) to a common port (125) of the flow control valve (120), a third fluid passageway within the housing (22) passing fluid from a first switched port (123) of the flow control valve (120) to the auxiliary discharge outlet (88), and a fourth fluid passageway within the housing (22) connecting a second switched port (124) of the flow control valve (120) to the primary discharge outlet (86). The primary discharge outlet (86) and the auxiliary discharge outlet (88) are each adapted for connection with external lines of a hydraulic system.
摘要:
The aim of the invention is to provide a rotary displacement machine, whereby turbulence in the supply area, i.e. the area where the medium to be displaced passes from the supply channels into the displacement chambers, is prevented to a large extend and the filling of the displacement chambers is improved. Disclosed is a rotary displacement machine with at least two displacement gearwheels with external teeth for displacing a fluid and with at least one supply channel with at least one supply mouth in the area of the displacement gearwheels for supplying the fluid to the displacement gearwheels. According to the invention, at least two supply mouths are provided and each supply mouth is embodied in such a way that fluid that exits the supply mouth when the rotary displacement machine is operated in a correct manner can either only reach the teeth of only one displacement gearwheel or the teeth of such displacement gearwheels which rotate in the same direction.
摘要:
The invention relates to a gear pump with internal rotor designed to deliver fluids, preferably oil for gear systems, pumps or internal combustion engines. On the side opposite the reniform suction and pressure elements used to feed in and draw off the fluid to be delivered, the pump has extensions of said elements, with which the inlet and outlet channels for the fluid communicate only indirectly via the gaps between the teeth of the internal-rotor gear and via the reniform suction and pressure elements. The extension of the reniform pressure element is shorter in relation to the extension of the reniform suction element. According to an additional version of the invention, the gear pump has only an extension of the reniform pressure element but no extension of the reniform suction element. The design of the invention makes it possible to lower the cavitation, pressure pulsation and adsorbed power of the pump.
摘要:
Die vorliegenden Erfindung betrifft eine Steuerscheibe (2) insbesondere für Flügelzellenpumpen welche eine Saugöffnung (4) und eine Drucköffnung (3) aufweist. Um eine Entlüftung von Luft zu ermöglichen, welche über die Saugöffnung (4) mit angesaugt wurde, ist an der Drucköffnung (3) der Steuerscheibe (2) eine Entlüftungsvorrichtung vorgesehen, welche in Form einer nutförmigen Aussparung (6) in der Steuerscheibe (2) ausgebildet ist.
摘要:
The invention relates to a roller vane pump for operating an automatic transmission for motor vehicles. The pump is provided with a pump housing (12), a rotor (4), a cam ring (2) and roller elements (7), which define a number of pump chambers (13). Fluid is communicated between a hydraulic channel (24) and a pump chamber (13) through suction ports (11 and 16) and discharge ports (17 and 18). According to the invention a front part of a circumference (32) of a slot (6) seen in a direction of rotation of the rotor (4) is at least partly curved such that the curvature of a curved part (32a) substantially matches the curvature of a roller element (7) accommodated in said slot (6).
摘要:
The invention relates to a roller vane pump for operating an automatic transmission for motor vehicles. The pump is provided with a pump housing (12), a rotor (4), a cam ring (2) and roller elements (7), which define a number of pump chambers (13). Fluid is communicated between a hydraulic channel (24) and a pump chamber (13) through suction ports (11 and 16) and discharge ports (17 and 18). According to the invention a circumference segment (30) of the pump rotor (4) in between two subsequent slots (6) is an essentially straight line as seen in axial direction.
摘要:
Für eine Brennkraftmaschine mit mittels Schmieröl versorgten gesonderten Hydraulikkreisen mit jeweils einer Pumpe wird zur Antriebsvereinfachung bei reduziertem Einbauraum vorgeschlagen, anstelle der gesonderten Pumpen eine mittels eines Zwischenläufers zweistufige Innenläufer-Zahnradpumpe zu verwenden.