Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for operating delivery pump

A technology of conveying pump and electric conveying, applied in the direction of muffler device, exhaust device, electric control of exhaust gas treatment device, etc., can solve the problem of difficult evaluation of current signal, and achieve the effect of minimizing noise

Active Publication Date: 2018-12-11
ROBERT BOSCH GMBH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For such mode of operation also known as acoustic function or NVH ( N oise- V ibration- H arshness, that is to say the avoidance of noise, vibrations and jerky running), it is problematic that the current signal generated in this manipulation is difficult to communicate between the armature movement and otherwise for pump operation and for the The information aspect of the pump control is evaluated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for operating delivery pump
  • Method and device for operating delivery pump
  • Method and device for operating delivery pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 By way of example, a technical environment is shown in which the method according to the invention can be used. Here, the illustration is limited to the components necessary for explaining the invention.

[0042] exist figure 1 An internal combustion engine 1 configured as a diesel motor is shown by way of example, which comprises a motor block 10 and an exhaust duct 30 in which an exhaust gas flow 20 is guided. The exhaust gas tract 30 has an exhaust gas purification device which, in the exemplary embodiment shown, firstly has an SCR catalytic converter 40 and a catalytically coated component arranged in the flow direction of the exhaust gas. Diesel particulate filter 50 (DPF). An injection unit 70 is arranged upstream of the SCR catalytic converter 40 on the exhaust tract 30 , with which injection unit urea-water solution can be injected. Together with the metering unit 80 , the injection unit 70 belongs to the metering system 60 , which can be controll...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method and a device, in particular a control unit, for operating an electric delivery pump designed as a reciprocating diaphragm pump or a reciprocating piston pump, whereinin order to carry out a transport stroke by partial control within a total period duration, during a control period, a solenoid coil of the delivery pump is loaded with control voltage over such a long pulse duration, so that armature impact of the delivery pump is effected in time interval after a control phase, and the moment of the armature impact is determined through evaluation of a currentcharacteristic curve of coil current flowing through the solenoid coil, wherein the duration of the time interval is predetermined and the end of the pulse duration is selected in such a way, so as tocomply with the time interval. As a result, a control scheme of the delivery pump is optimized in terms of delivery power and / or noise generation, the control scheme being used to avoid noise, vibration and unsteady operation.

Description

technical field [0001] The invention relates to a method for operating an electric delivery pump configured as a reciprocating diaphragm pump or as a reciprocating piston pump, wherein in order to carry out a delivery stroke by partial actuation within the total cycle duration, during the actuation phase, The solenoid coil of the delivery pump is supplied with an actuation voltage in the range of such a long pulse duration that in the time interval (Δt) after the actuation phase, the armature strike of the delivery pump takes place, and by The moment at which the armature strikes is determined by evaluating the current characteristic curve of the coil current flowing through the solenoid coil. [0002] Furthermore, the invention relates to a device, in particular a control unit, for carrying out the method according to the invention. Background technique [0003] In order to comply with current exhaust gas legislation, for example, the nitrogen oxide-reducing urea-water sol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F04B49/06F01N3/20F01N9/00
CPCF01N3/2066F01N3/208F04B49/06F01N2610/144F01N2610/02H01F7/18F04B13/00F04B17/04Y02T10/12F01N3/10F01N9/00
Inventor R.约希C.拜尔J.马克坦德
Owner ROBERT BOSCH GMBH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com