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
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04 Jun 2009TL;DR: In this paper, a pump element arranged radially with respect to a drive shaft is supported by a pump housing, where the element is actuated by the shaft and a fuel inlet.
Abstract: The pump has a pump element arranged radially with respect to a drive shaft (3) that is supported in a pump housing (1), where the element is actuated by the shaft and a fuel inlet (21). A distributor element (17) is arranged on the housing and a low pressure channel (24) is provided in the distributor element. The channel hydraulically connects the pump element with the inlet. A return flow connecting piece (47), return channel (45), suction control valve (23), internal gear pump, and/or single- or two-stage overflow valve are integrated in the distributor element.
11 citations
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15 Dec 2011TL;DR: In this paper, the first and second pump assemblies are coupled to the electric motor and the second fluid pump is powered by hydraulic pressure from the first fluid outlet (22) of a first fluid pump and functions to augment flow through the case drain region of the first.
Abstract: Example fluid circuits (e.g., within aircrafts) include first (12) and second (32) pump assemblies. The first pump assembly has an electric motor (18) and a first fluid pump (16). The first fluid pump is coupled to the electric motor and has a case drain port (30) that is in fluid communication with a case drain region of the first fluid pump. The second pump assembly is powered by hydraulic pressure from the first fluid outlet (22) of the first fluid pump and functions to augment flow through the case drain region of the first fluid pump.
11 citations
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06 Oct 2011TL;DR: In this article, a dual drive pump system for rear wheel or front wheel drive automatic transmission in a motor vehicle is described, which is also driven by a gear train driven by an auxiliary motor.
Abstract: A dual drive pump system for rear wheel or front wheel drive automatic transmission in a motor vehicle includes a dual drive pump disposed off-axis of the transmission input shaft axis and driven by a gear train driven by a hub. The dual drive pump is also driven by a gear train driven by an auxiliary motor. Torque multiplication through the gear train allows the dual drive pump to have a smaller displacement while still providing the hydraulic pressure needs of the transmission. Each gear train is connected to the dual drive pump via back-to-back one way clutches (OWC). The dual drive pump may be driven by either an engine or the auxiliary motor depending on the operating conditions of the motor vehicle.
11 citations
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15 Jul 1987TL;DR: In this article, a self-scavenging gear box lubrication system is described, which includes a gear box housing (54) having at least one gear chamber providing relatively close conformation with meshing gears (20, 24, 32) rotatably mounted in the chamber.
Abstract: A self-scavenging gear box lubrication system includes a gear box housing (54) having at least one gear chamber (63, 65) providing relatively close conformation with meshing gears (20, 24, 32) rotatably mounted in the chamber. Lubricating fluid is delivered to the chamber for lubricating and cooling the gears. At least one collecting cavity (56-62) for the lubricating fluid is provided in the housing separate from the gear chamber. A passage (64-74) communicates between the gear chamber and the collecting cavity for passing fluid from the chamber to the cavity under the influence of centrifugal action effected by rotation of the meshing gears, whereby the fluid can be scavenged from the cavity by an appropriate lubrication pump (100). The passage is oriented generally tangentially of at least one of the meshing gears, and the passage is of restricted dimensions to provide a positive inlet pressure to the lubrication pump.
11 citations
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27 Mar 2013
TL;DR: In this article, an asymmetrical bearing for use in a gear pump is described. But the bearing is not described. And it is assumed that the first and second opposing faces of the bearing are in communication with each other.
Abstract: An asymmetrical bearing is disclosed for use in a gear pump. The bearing may have first and second opposing faces, and first and second bores in communication with the first and second opposing faces. The first and second bores may be configured to receive first and second shafts of a gear pump. The bearing may have a first flat side surface and a second curved side surface, where the second curved side surface includes first and second curved portions associated with the first and second bores, respectively. The first and second faces and the first flat side surface may also include a plurality of grooves configured to direct a flow of process fluid over the bearing during operation of the pump. Self-aligning features can be provided on one or more sealing elements to ensure desired alignment of the sealing components during assembly. Other embodiments are described and claimed.
11 citations