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Method for determining displacement of a radial piston machine

A radial column and plug technology, applied in the direction of liquid variable volume machinery, mechanical equipment, variable volume engine, etc., can solve the problem of eccentricity that cannot be measured, and achieve the effect of rapid and precise control scheme

Inactive Publication Date: 2015-02-25
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Instantaneous displacement is suitable as a reference variable for controlling delivered power - however, neither displacement nor instantaneously adjusted eccentricity can be measured

Method used

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  • Method for determining displacement of a radial piston machine
  • Method for determining displacement of a radial piston machine
  • Method for determining displacement of a radial piston machine

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Embodiment Construction

[0018] FIG. 1 shows a radial piston machine designed as a radial piston motor 1 according to the prior art. Five cylinders 2 are arranged in a star shape and are pivotably mounted (not shown in the figure). Each cylinder 2 is assigned a plunger 3 , which is supported slidingly on a stroke ring 4 with sliding shoes. The stroke ring 4 is driven by an eccentric 5 and thus produces the different stroke phases as shown in the figure. The pivotable mounting of the cylinder not shown in FIG. 1 is known from DE 10 2004 048 174 A1 mentioned at the outset, whereby DE 10 2004 048 174 A1 is hereby incorporated by reference in its entirety in the disclosure of the application.

[0019] figure 2 The schematic illustration shows the cylinder 2 in FIG. 1 , wherein the same reference numerals are used for the same parts. The cylinder 2 is mounted pivotably about an axis passing through the point S in a housing, not shown in the figures. The plunger 3 , which is slidably arranged in the cy...

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PUM

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Abstract

A method of determining displacement of a radial piston machine (1) having adjustable eccentricity (e). The radial piston machine (1) includes cylinders (2) arranged in a pivoting manner and a drive shaft that drives an eccentric (5). The rotation angle of the drive shaft is labeled as α and the pivoting angle of the cylinders (2) is labeled β. The pivoting angle β is measured and from the measured values for the pivoting angle β, the eccentricity (e) and hence the displacement (v) are calculated.

Description

technical field [0001] The invention relates to a method for determining the displacement of a radial piston machine. Background technique [0002] It is known that the delivery performance of radial piston machines, ie radial piston motors or radial piston pumps, is directly dependent on the displacement, which can be varied by adjusting the eccentricity. For controlling the delivered power, the instantaneous displacement is suitable as a reference variable - however, neither the displacement nor the instantaneously adjusted eccentricity can be measured. [0003] A method for controlling a hydrostatic drive is known from DE 10 2007 003 800 B3, in which the instantaneous displacement of the hydrodynamic motor is deduced from the immediate adjusting current by means of an adjusting current characteristic curve. [0004] From DE 10 2004 048 174 A1 of the applicant, a device for determining the displacement of an adjustable radial piston motor with a pivotably mounted cylinder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03C1/04F04B49/12F04B1/053F04B51/00F04B1/07
CPCF04B1/07F03C1/046F04B51/00F04B49/125F04B1/0531
Inventor 曼弗雷德·西格尔约尔格·盖斯
Owner ZF FRIEDRICHSHAFEN AG