Error cause detection or narrowing down of errors with the aid of error patterns in the air system

摘要

A method for monitoring at least one part of an internal combustion engine based on a variable whose values characterize the operation of the part of the internal combustion engine during different states of the internal combustion engine, including: determining an actual pattern with the actual values of the variable during different states of the internal combustion engine which describe the actual operation of the internal combustion engine; providing a reference pattern for a known operation of the internal combustion engine, the reference pattern including reference values of the variable for different states of the internal combustion engine; and comparing the actual pattern to the reference pattern to determine a similarity between the actual operation and the known operation.

主权项

1. A device for monitoring at least one part of an internal combustion engine based on a variable, the device comprising:
an observation device, wherein the observation device is configured to:
detect actual values of the variable during different states of the internal combustion engine, the detected actual values characterizing an actual operation of the at least one part of the internal combustion engine during the different operating states, wherein the variable is a volumetric efficiency factor which indicates how much gas is taken in by the internal combustion engine during a combustion cycle in relation to a theoretically possible gas intake volume; andoutput an actual pattern of the detected actual values; a memory to store a reference pattern for a known operation of the internal combustion engine, the reference pattern including reference values of the variable for the different states of the internal combustion engine; and an evaluation device to compare the actual pattern to the reference pattern to determine a similarity between the actual operation and the known operation.