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

Method for operating electric fuel pump

A fuel pump, voltage technology, applied in the direction of fuel injection pump, fuel injection control, electrical control, etc., can solve the problem of high cost

Active Publication Date: 2014-09-17
ROBERT BOSCH GMBH
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the voltage required for the operating point at the fuel pump varies strongly in different cases and depending on the ambient conditions
The design of the injection system therefore requires a permissible large voltage range of the electric fuel pump, however, in exceptional cases, for example, at the fuel filter, this can result in significantly higher, current on fuel pump
However, the design of the output stage of the electric fuel pump for this maximum possible current within the injection system is relatively more expensive than the design of the current that occurs only under normal conditions.

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 for operating electric fuel pump
  • Method for operating electric fuel pump
  • Method for operating electric fuel pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The invention is shown schematically on the basis of an embodiment in the drawing and is described in detail below with reference to the drawing.

[0023] The drawings are generally and collectively described, like reference numerals referring to like parts.

[0024] figure 1 Overall there are five graphs, namely a first pressure-time graph 2 and a second pressure-time graph 4 , in which the time in milliseconds is each recorded along the abscissa 6 and the time in bar is each recorded along the ordinate 8 Fuel pressure in injection equipment. also figure 1 A first current-time diagram 10 and a second current-time diagram 12 are shown, which likewise each have an abscissa 6 along which the time in milliseconds is recorded. Furthermore, the two current-time diagrams 10 , 12 each include an ordinate 14 along which the current flowing through the electric fuel pump of the injection system is recorded in amperes. In the middle between the first pressure-time diagram 2 a...

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 for operating an electric fuel pump, specifically a method for operating the electric fuel pump of an injection device, wherein a maximum limit value (48) is preset for a voltage applied to the electric fuel pump, a maximum limit value (62) is preset for a current flowing through the electrical fuel pump, a value (62) of a required current of the electric fuel pump is measured, and in which, in the event that the measured value (62) of the current is above the preset maximum limit (64), the maximum limit value (48) preset for the voltage applied to the electric fuel pump power depending on the measured value (62) of the current is reduced.

Description

technical field [0001] The invention relates to a method and a control device for operating an electric fuel pump. Background technique [0002] The function of the injection system for the internal combustion engine can be controlled by the control device. A so-called EDC (Electronic Diesel Control) control device can be used for injecting diesel into the combustion chamber of the internal combustion engine. The output stage of the EDC control device is usually designed in such a way that the current requirements of the regulating components of the injection system can be met without problems even under unfavorable operating boundary conditions. In addition, a monitoring module is provided, with which the output stage can be switched off in the event of a fault, for example in the event of a short circuit or overheating. [0003] The regulating component of the injection system can be designed as an electric fuel pump (EKP), which in normal operation has only a limited cu...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F02D1/00
CPCF02D41/22F02D1/00F02D41/3082F02D2041/2048F02D2041/2051F02D2041/2058F02D2041/226
Inventor G.法伊特
Owner ROBERT BOSCH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com