Method and device for operating a pump

A technology of pump pipelines and actuators, which is applied in the direction of measuring devices, fuel injection devices with sensors, pump parameters, etc., can solve problems such as unavailability, and achieve the effect of small space requirements

Inactive Publication Date: 2019-02-19
AVL LIST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Abstract

The invention relates to a method and a device for calibrating a pump (1) arranged in a pump line (6), wherein the device has an actuator (2) for adjusting the pump output of the pump (1) and Adjustment unit (3). The device has a flow controller (4) in the fuel line (6). The regulating unit (3) is designed to change the control variable of the actuator (2) substantially smoothly when starting the pump (1) up to the switching point (SP) of the flow controller (4) and to determine and store the corresponding control variable for the switching point (SP); determination of the control variable between the reference control variable (fR) stored for the pump (1) and flow controller (4) and the corrected control variable (fK) determined at calibration difference (Δf); and calibrating the control variable of the actuator (2) of the pump (1) based on said control variable difference (Δf).

Description

technical field [0001] The invention relates to a method for operating a pump, in particular for measuring a circulating pump for fuel consumption measurement in an engine test stand, wherein a flow controller with a defined switching point is provided in the pump line, in addition, 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 power of the pump. Furthermore, the invention relates to an application of the device for determining the point in time for maintenance and / or replacement of a pump. Background technique [0002] As a function of the control variable, ie the adjustment frequency provided, for example, by a frequency converter, the delivery power of the pump decreases with increasing wear. An accelerated drop in delivery power can indicate that the pump will soon fail. [0003] This can be problematic in particular when supplying fuel to the engine test...

Claims

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Application Information

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Patent Type & Authority Patents(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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