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Method for determining identification threshold to stop identification

A technology for identifying thresholds and thresholds, used in fuel injection control, internal combustion engine testing, engine control, etc., and can solve problems such as catalytic converter damage

Active Publication Date: 2014-03-26
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interruption of combustion can also lead to damage to the catalytic converter in the corresponding exhaust tract of the internal combustion engine

Method used

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  • Method for determining identification threshold to stop identification

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Embodiment Construction

[0028] The invention is shown schematically in the drawing on the basis of an embodiment and will be described in more detail below with reference to the drawing.

[0029] figure 1 How an embodiment of the method of the present invention may be performed is shown in the form of a flowchart 100 . The embodiment of the method according to the invention shown here can in particular be carried out automatically. When the method is started in step 101 , in step 102 the current operating point is selected as the first operating point and the corresponding release condition is calculated. The release conditions may be, for example, engine temperature, engine speed, engine torque and special driveline conditions. Once the appropriate release conditions are achieved, the method of the invention can be initiated. That is to say, in step 103 it is first checked whether the release condition is fulfilled. If this is not the case, then, as indicated by arrow 103_1 , a different operati...

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Abstract

The present invention relates to a method for determining a identification threshold in a multicylinder internal combustion engine to stop identification, wherein the internal combustion engine stops single defined cylinder among the plurality cylinders under preset defining releasing conditions and the first operation of the internal combustion engine is normal, unstable operation signal is obtained. A first threshold value is derived therefrom and stored in an adaptation matrix for the first operating point, wherein standard valves of different operating points stored in the adaptation matrix are correspondingly marked by the first threshold when the first threshold of the first operation point is known and stored in the adaptation matrix as corresponding thresholds for different corresponding operation points.

Description

technical field [0001] The invention relates to a method for determining an identification threshold for interruption identification in the case of a multi-cylinder internal combustion engine. The invention also relates to a corresponding device. Background technique [0002] A combustion interruption (Verbrennungsaussetzer) leads to an increase in the emission of harmful substances during the operation of the internal combustion engine. The interruption of combustion can also lead to damage of the catalytic converter in the corresponding exhaust tract of the internal combustion engine. In order to meet the legislative requirements for on-board monitoring of exhaust-related functions, combustion interruptions need to be detected over the entire speed and load range. In this context, it is known that when the internal combustion engine is running, a change in the engine speed curve characterized by a combustion interruption occurs compared to normal operation of the interna...

Claims

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Application Information

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IPC IPC(8): F02D41/00
CPCG01M15/11F02D41/008F02D41/0097F02D41/248F02D2200/1015
Inventor J.伯切尔
Owner ROBERT BOSCH GMBH