Method for monitoring the reporting of misfirings in an internal combustion engine through various submethods
First Claim
1. A method for monitoring a report of misfires in an internal combustion engine through at least two different submethods, which comprises:
- forming one subgroup from at least two mutually different submethods of detecting misfires in an internal combustion engine of a vehicle;
assigning a weighting graph containing weighting values dependent on operating parameters of the vehicle to each of the at least two submethods, the values being a measure of reliability of a report of the submethod;
reading a weighting value out of the associated weighting graph upon each report in a submethod;
adding the weighting values of the submethods of one subgroup to make a reference value; and
comparing the reference value formed by adding the weighting values of the submethods with a limit value, and confirming a misfire report of misfires in the internal combustion engine if the reference value is greater than the limit value.
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Abstract
A method for monitoring a report of misfires in an internal combustion engine through at least two different submethods includes forming one subgroup from at least two submethods. A weighting graph containing weighting values dependent on operating parameters of a vehicle is assigned to each submethod, and the values are a measure of reliability of a report of the submethod. A weighting value is read out of the associated weighting graph upon each report in a submethod. The weighting values of the submethods of one subgroup are added to make a reference value. The reference value is compared with a limit value, and a misfire report is confirmed if the reference value is greater than the limit value.
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Citations
7 Claims
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1. A method for monitoring a report of misfires in an internal combustion engine through at least two different submethods, which comprises:
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forming one subgroup from at least two mutually different submethods of detecting misfires in an internal combustion engine of a vehicle; assigning a weighting graph containing weighting values dependent on operating parameters of the vehicle to each of the at least two submethods, the values being a measure of reliability of a report of the submethod; reading a weighting value out of the associated weighting graph upon each report in a submethod; adding the weighting values of the submethods of one subgroup to make a reference value; and comparing the reference value formed by adding the weighting values of the submethods with a limit value, and confirming a misfire report of misfires in the internal combustion engine if the reference value is greater than the limit value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification