Method and device for operating a pump

A technology of measuring device and pump pipeline, applied in the direction of measuring device, fuel injection device with sensor, pump control, etc., can solve problems such as unavailability, and achieve the effect of small space requirement

Inactive Publication Date: 2017-08-01
AVL LIST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the results of such series of tests may not be available

Method used

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  • Method and device for operating a pump
  • Method and device for operating a pump
  • Method and device for operating a pump

Examples

Experimental program
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Embodiment Construction

[0039] figure 1 The device according to the invention is shown in a simplified schematic diagram, in which a pump 1 pumps the medium to be pumped in a pump line 6 from a medium source 7 to a medium consumer 8 . In connection with the specific description, the line in which the pump is arranged is referred to as "pump line" and through which the pump pumps the medium to be pumped. The pump line can also be led in a circulation circuit, as is usual, for example, in heating systems.

[0040] The pump 1 is connected to an actuator 2 , wherein the actuator 2 predetermines a control variable which determines the delivery performance of the pump 1 . The control variable can be, for example, a frequency, and the actuator 2 can be a frequency converter.

[0041] A density sensor 5 is arranged upstream of the pump in the pump line 6 , wherein a viscosity sensor can also be provided instead of the density sensor 5 or in addition to the density sensor.

[0042] A flow controller 4 is ...

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PUM

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Abstract

The invention relates to a method and device for calibrating a pump (1) provided in a pump line (6), wherein the device has an actuator (2) for adjusting the pumping capacity of the pump (1), and a regulating unit (3). The device has a flow monitor (4) in the fuel line (6). The regulating unit (3) is designed to substantially constantly change the manipulated variable of the actuator (2) when starting the pump (1) up to the switching point (SP) of the flow monitor (4), and to determine and store a manipulated variable assigned to the respective switching point (SP), as well as to determine a manipulated variable difference value ([delta]f) between a reference manipulated variable (fR) stored for the pump (1) and the flow monitor (4) and a calibration manipulated variable (fK) determined during calibration, and to calibrate the manipulated variable of the actuator (2) of the pump (1) based on the manipulated variable difference value ([delta]f).

Description

technical field [0001] The invention relates to a method for operating a pump, in particular a measuring circulation pump for fuel consumption measurement in an engine test stand, in which a flow controller with a defined switching point is arranged in the pump line and, moreover, The invention relates to a device for calibrating a pump arranged in a pump line, wherein the device has an actuator and a regulating unit for adjusting the pump output of the pump. Furthermore, the invention relates to a use of the device for determining when to maintain and / or replace a pump. Background technique [0002] As a function of the control variable, ie the control frequency provided, for example, by a frequency converter, the delivery performance of the pump decreases with increasing wear. An accelerated drop in delivery power can indicate that the pump will soon fail. [0003] This can in particular cause problems when supplying fuel to engine test stands. Carrying out the test pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
CPCF04B49/00F02M2200/24F04B2205/14F04B2205/09G01M15/02F04B51/00F04B2201/00G01F25/10
Inventor V·布拉泽M·布赫纳G·利希特内格尔
Owner AVL LIST GMBH
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