Direct control linear variable displacement vane pump
A variable-displacement vane pump and vane technology, which is applied in pump control, lubricant pressure control, lubrication pumps, etc., can solve problems such as the inability to install electromagnetic solenoids and the limitation of the maximum force capacity of electromagnetic solenoids.
Inactive Publication Date: 2012-01-25
STT技术股份有限公司,麦格纳动力股份有限公司和SHW有限公司的合资公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Power consumption may negate the benefit of controlling the pump to minimize the time the pump provides excess lubricant flow
Additionally, the maximum force capability of an electromagnetic solenoid is limited by the magnitude of the electromagnetic field and current applied to it
For some applications, the magnitude of the electromagnetic field required to provide the desired force precludes the installation of electromagnetic solenoids in the vehicular environment
Method used
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[0023] Example embodiments will now be described more fully with reference to the accompanying drawings.
[0024] Reference attached Figure 1-3 , the pump system 10 is shown plumbed to communicate with the exemplary power transmission device 12 . The power transfer device 12 is shown exemplary and may include any number of devices including an internal combustion engine, a transmission, a transfer case, and axle assemblies, among others. The pump system 10 includes a variable displacement pump 14 including a housing 16 having a flange 17 for mounting the pump 14 to the power transfer device 12 . Alternatively, the housing 16 may be integrally formed with the power transmission device. An inlet 18 extends through the housing 16 interconnecting a low pressure oil port 20 with a sump 22 storing fluid to be pumped. Outlet 24 of housing 16 interconnects high pressure chamber 26 with power transfer device 12 .
[0025] Pump 14 includes a pump rotor 28 rotatably mounted within a...
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A fluid pumping system for a power transmission device includes a variable displacement vane pump having a housing containing a rotor, a plurality of vanes coupled to the rotor and a linearly translatable slide for varying the displacement of the pump. A control system varies the displacement of the pump and provides a fluid output pressure selected from a continuously variable range of output pressures which are independent from the operating speed of the pump. The control system includes a linear actuator for moving the slide between minimum and maximum pump displacement positions. The linear actuator includes an electric stepper motor for bi-directionally translating an actuator shaft acting on the slide.
Description
[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 157,601, filed March 5, 2009. The entire disclosure of the above application is hereby incorporated by reference. technical field [0003] The present disclosure relates to liquid pump systems for automobiles. More specifically, the present disclosure relates to variable displacement vane pumps and control systems for providing continuously variable output flow independent of the operating speed of the pump. Background technique [0004] Mechanical systems such as internal combustion engines and automatic transmissions often include lubrication pumps that provide lubrication under pressure to the many moving components and / or subsystems of the mechanical system. In most cases, a lubrication pump is driven by a rotating member of a mechanical system. The operating speed and output of the pump varies with the operating speed of the mechanical system...
Claims
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IPC IPC(8): F04C14/22F01M1/16F16H57/04F16N13/20
CPCF16H57/0436F04C14/223F01M1/16F04C14/22F16N13/20
Inventor F·斯特拉图拉特P·L·M·常G·哈达P·克鲁格
Owner STT技术股份有限公司,麦格纳动力股份有限公司和SHW有限公司的合资公司