METHOD FOR INVESTIGATING A CAUSE OF A FAILURE OF A COMPONENT OF A DRIVE MACHINE
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United States of America Patent
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Issued Date -
Aug 25, 2016
app pub date -
Feb 18, 2016
filing date -
Feb 20, 2015
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Abstract
In the method for investigating the cause of a failure of a component of a drive machine, such as an internal combustion engine, an electric drive or a hybrid drive for example, in particular an emissions-related component of an internal combustion engine, in particular in a motor vehicle, the internal combustion engine supplies at least two characteristic values during operation. Each characteristic value is compared with a threshold value. Appropriate diagnosis messages are generated depending on the respective results of the comparisons. At least one diagnosis message indicates a failure. A potential cause or potential causes of the failure or failures is/are diagnosed and corresponding fault messages are generated on the basis of the diagnosis message or diagnosis messages. A position in a ranking is associated with each fault message, where the ranking represents the relative probabilities of the presence of the respective associated causes.
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