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Pendulum slide pump

A pendulum type and hammer type technology, applied in the field of inner rotor, can solve the problem of high stress

Inactive Publication Date: 2016-09-21
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the known pendulum sliding pumps have the disadvantage that the stresses are higher at particularly sensitive points of the inner rotor, namely at the transition from the groove wall to the groove bottom, or in the respective groove bottom itself

Method used

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Examples

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Embodiment Construction

[0021] according to figure 1 , the pendulum-type sliding pump 1 according to the invention has a rotatably mounted inner rotor 2 which is connected to an outer rotor 4 via a pendulum 3 . For the sake of simplicity, only the sheared part of the outer rotor 4 and a single pendulum 3 are shown. The illustrated pendulum 3 is articulatedly mounted on the outer rotor 4 and is guided radially in an associated groove 5 of the inner rotor 2 . Generally, the pendulum 3 is composed of a pendulum head 6 and a pendulum leg 7, wherein the pendulum head 6 is rotatably mounted on the outer rotor 4, and the pendulum leg 7 is installed so as to be able to fit inside the groove 5 of the inner rotor 2. Move in translation. Of course, the opposite embodiment is also conceivable, in which the pendulum head 6 of the pendulum 3 is mounted in rotation on the inner rotor 2 and the pendulum legs 7 are able to move in a translational manner in grooves arranged on the outer rotor 4 move. The inner rot...

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Abstract

A pendulum-type sliding pump (1) having a rotatably mounted inner rotor (2) connected to an outer rotor (4) via a pendulum (2). The basic structure of the invention consists in that the groove (5) has two groove walls (8) which extend via respective rounded areas (9) into a common groove bottom (10); the rounded areas (9) have a variable groove radius (s) and is configured to extend into the groove bottom (10) and / or the groove wall (8) without or with at least a reduced curvature change (12); to the groove wall (8) The groove radius (s) in the transition and in the transition to the groove bottom (10) is greater than the groove radius (s) between said transitions. Therefore, the generated stress can be reduced and the life can be significantly improved.

Description

technical field [0001] The invention relates to a pendulum-type sliding pump having a rotatably mounted inner rotor connected to an outer rotor via a pendulum. The invention also relates to the use of the pendulum-type sliding pump in a motor vehicle, and an inner rotor for the pendulum-type sliding pump. Background technique [0002] The use of quantitatively controlled pendulum-type sliding pumps in internal combustion engines has long been prior art, the purpose of which is, for example, to be able to easily adapt the delivery speed and pressure of the fluid to be delivered required by the internal combustion engine. [0003] Such a common pendulum-type sliding pump is known, for example, from DE 195 32 703 C1 for supplying internal combustion engines with lubricant, in particular oil. [0004] However, the known pendulum-type sliding pumps have the disadvantage that the stresses are higher at particularly sensitive points of the inner rotor, ie at the transition from th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/332F04C2/324F04C15/00
CPCF01C21/0809F04C2/332F04C2/324F04C2250/20F04C2/348F04C14/22
Inventor 安德烈·梅德艾克·斯蒂特瑞奇
Owner MAHLE INT GMBH
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