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Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivetrain

A technology of power transmission system and internal gear pump, applied in machine/engine, pump, pump control, etc., can solve the problem of layout inside the casing, and achieve low component and component cost, simple mechanical structure, and small space requirements Effect

Active Publication Date: 2015-04-15
GETRAG GETRIEBE & ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When implementing this variant, there is a problem: for the electrical actuation of the valves, it is necessary to run lines from the area of ​​the central controller, which is usually arranged outside the transmission or clutch housing, to the pump, which is usually arranged in the inside of the shell

Method used

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  • Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivetrain
  • Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivetrain
  • Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivetrain

Examples

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Embodiment Construction

[0066] figure 1 Internal gear pump 10 is shown schematically. The internal gear pump 10 includes a housing 12 with a schematically indicated inner rotor 14 and a schematically indicated outer rotor 16 . The internal gear pump 10 is preferably in the form of a ring gear pump or a gerotor pump, so that the outer teeth of the outer rotor 16 (not shown in more detail) are one more tooth than the outer teeth of the inner rotor 14 . The pumping action is achieved by the meshing of the teeth. Preferably, the inner rotor 14 is driven, in particular by means of an electric motor. The ring element 20 is mounted in the housing 12 in the manner of a commutation ring. The ring element 20 is pivotable concentrically about the axis of the inner rotor 14 between two rotational positions, at figure 1 One of the two rotational positions is shown as DP1 in . The ring element 20 also has an outer rotor receptacle (not shown in more detail) formed eccentrically with respect to the inner rotor...

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Abstract

An internal-gear pump has a housing which has a first fluid port and a second fluid port. An inner rotor is mounted in the housing so as to be rotatable about an inner rotor axis and has an external toothing. An outer rotor is rotatable in the housing about an outer rotor axis and has an internal toothing which, to generate a pump action, engages with the external toothing of the inner rotor. The internal-gear pump furthermore has a ring element which is mounted movably in the housing so as to be pivotable between a first position and a second position. At least a third fluid port is formed on the housing. The third fluid port is arranged relative to the ring element such that, in the first position of the ring element, the third fluid port is connected to the second fluid port. In the second position, said third fluid port is separated from the second fluid port.

Description

technical field [0001] The present invention relates to an internal gear pump, in particular for use in a hydraulic circuit of a motor vehicle drive train, comprising a housing with a first fluid port and a second fluid port, mounted in the housing and mounted so as to An inner rotor rotatable about an inner rotor axis and having outer teeth and an outer rotor rotatable in a housing about the outer rotor axis and having inner teeth meshing with the outer teeth of the inner rotor to produce a pumping action. [0002] The invention also relates to a hydraulic circuit, in particular for a motor vehicle drive train, having an internal gear pump of the type described. Background technique [0003] For hydraulic circuits of motor vehicle drive trains it is known to use hydraulic pumps in the form of gear pumps. With regard to gear pumps, a general distinction is made between external gear pumps, internal gear pumps and ring gear pumps. The expression "internal gear pump" is inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/10F04C15/06
CPCF04C2/102F04C2/08F04C2/086F04C14/04F04C14/12F04C15/06F04C2/10F04C2/105
Inventor 马克·施魏厄托马斯·霍夫迈斯特斯文·舒斯特霍尔格·贝格
Owner GETRAG GETRIEBE & ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CO KG
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