Method and device for recognizing an interruption in an electrical supply line

A technology of electric lead wires and lead wires, which is applied in mechanical equipment, electrical control, fuel injection control, etc., can solve problems such as limited determination, difficulty in fault finding, short-term interruption of lines or plug-in contacts, etc., to achieve reduction The Effect of Small Warranty Costs

Active Publication Date: 2012-02-01
ROBERT BOSCH GMBH
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The described method has the disadvantage that short interruptions of the lines or plug contacts cannot be determined or can only be determined to a limited extent
In particular, fault finding in repair workshops is made difficult by non-continuous interruptions

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 recognizing an interruption in an electrical supply line
  • Method and device for recognizing an interruption in an electrical supply line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 The course of a current signal 15 via an actuator of a fuel metering system of an internal combustion engine is shown in graph 10 . Current signal 15 is plotted on signal axis 11 along time axis 12 . During the course of this current signal 15 , a signal drop 13 can be seen, which originates from a brief interruption of the leads of the actuator. Since the interruption lasts only about 0.7 microseconds and occurs only once, the fuel meter-related control unit does not execute the routine for contact bounce prevention. However, the signal drop 13 leads to a subsequent overshoot 14 of the current signal 15 , which affects the fuel metering and can thus lead to undesired deviations in the composition of the air-fuel mixture and thus also to the internal combustion engine. Undesirable deviations of the exhaust gas composition. The output stage diagnostics in the control unit detect this brief interruption and effect a value change in the fault signal, for exampl...

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 to a device for recognizing a temporary interruption of an electrical supply line between a control device and an adjustment device of an internal combustion engine in a motor vehicle and / or a temporary faulty connection of the supply line to operating voltage or ground. According to the invention, the temporary interruption and / or faulty connection is recorded in an error memory as an interruption, with an identification of the affected supply line. After said recording of the event in the error memory, it is possible at a shop to identify the faulty supply line or the faulty component and to then replace the smallest definable component. According to the prior art, larger assemblies or even non-defective assemblies are sometimes replaced under warranty in order to prevent further visits to the shop. This can be connected with considerable costs, however, such as in the case of electronic control devices.

Description

technical field [0001] The invention relates to a method and a device for detecting a temporary interruption of an electrical lead and / or a temporary faulty connection of the lead to operating voltage or ground between a control unit and a regulating device of an internal combustion engine in a motor vehicle. Background technique [0002] Motor vehicles have in their electrical equipment a large number of value registers and regulators, which are connected to one or more control devices via leads and plug connectors. A fault in a lead wire or plug connector can lead to at least a temporary interruption of operation until the vehicle is parked. It is therefore usual, for example, to check the plausibility of the signals of the value recorder with respect to the maximum and minimum values ​​as well as the expected measured values, if necessary to carry out a fault display and to store a fault code in the fault memory. Likewise, the leads to the regulator and the regulator its...

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): F02D41/20
CPCF02D41/221F02D2041/2089Y02T10/40F02D41/20F02D2041/2058
Inventor O.布罗克斯S.凯勒H.福尔默
Owner ROBERT BOSCH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap