Topic
Gear pump
About: Gear pump is a research topic. Over the lifetime, 7490 publications have been published within this topic receiving 38837 citations. The topic is also known as: Gear pump.
Papers published on a yearly basis
Papers
More filters
•
24 Jun 2010TL;DR: In this paper, a hydraulic pump control system provided in a construction machine such as an excavator is described, in which a loss of a flow rate is reduced by initially supplying hydraulic fluid as much as necessary from the hydraulic pump to a hydraulic motor to accelerate a swing movement of an upper frame against a lower traveling structure or to make an upper swing structure swing.
Abstract: A hydraulic pump control system provided in a construction machine such as an excavator is provided. According to the hydraulic pump control system, a loss of a flow rate is reduced by initially supplying hydraulic fluid as much as necessary from a hydraulic pump to a hydraulic motor in order to accelerate a swing movement of an upper frame against a lower traveling structure or to make an upper swing structure swing.
15 citations
•
30 Nov 2001TL;DR: In this article, a multi-speed gear arrangement for use in a centrifugal engine charger is described, and a fixed carrier is provided for the planetary gear set, which has a rotary input and an output that is linked to a rotor of a charger.
Abstract: A multi-speed gear arrangement for use in a centrifugal engine charger. A planetary gear set has a ring gear, at least a first and a second set of planetary gears, and at least a first and a second sun gear. A fixed carrier is provided for the planetary gear set, and the planetary gear set has a rotary input and an output that is linked to a rotor of a centrifugal engine charger.
15 citations
•
08 Dec 1921
15 citations
•
22 Jul 1997TL;DR: In this article, a compact manual transaxle includes an input shaft having four fixed input gears, a first intermediate shaft rotatably supporting three speed gears meshing with three of the input gears.
Abstract: A compact manual transaxle includes an input shaft having four fixed input gears, a first intermediate shaft rotatably supporting three speed gears meshing with three of the input gears, a second intermediate shaft rotatably supporting a pair of speed gears meshed with two of the input gears and a reverse gear meshed with a speed gear on the first intermediate shaft, and a differential. One speed gear on each of the intermediate shafts meshes with a common input gear. A transfer gear on each intermediate shaft is meshed with a final drive gear fixed to the differential. The transaxle further includes a pair of synchronizer clutches for establishing three forward gears by selectively coupling the three speed gears to the first intermediate shaft and a pair of synchronizer clutches for establishing two forward gears and the reverse gear by selectively coupling the speed gears and reverse gear to the second intermediate shaft.
15 citations
•
18 Mar 1982TL;DR: In this article, the authors proposed a method of axial retention of a metallic gear on a metallic shaft by deformation of the annular interface regions defined at the external junctions of a gear and shaft by applying compressive forces over same.
Abstract: A method of securing a metallic gear on a metallic shaft provides an improved axial retention of the gear on the shaft in particularly severe applications, as encountered in gear pumps. The method involves plastic deformation of the annular interface regions defined at the external junctions of a gear and shaft by the application of compressive forces over same, after the gear has been secured onto the shaft by conventional methods. The preferred practice of the method first includes the steps of radially retaining the gear on the shaft via shrink fit procedures which include heating the gear, cooling the shaft, inserting the shaft into the bore of the gear, and allowing the temperatures of the gear and shaft to equalize. Upon radial retention of the gear on the shaft, the novel axial retention system of this invention preferably involves a system of hardened steel wheels, equidistantly positioned about the annular interfaces of the gear and shaft, the wheels simultaneously contacting the latter interfaces with compressive forces of magnitudes sufficient to produce plastic deformation within the aforesaid interface regions.
15 citations