Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Patent
1996-09-23
1999-04-06
Zanelli, Michael
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
731173, 123419, 123479, 36455101, G01M 1500
Patent
active
058930426
ABSTRACT:
The invention is directed to a method for detecting combustion misfires on the basis of a first input feature signal in which the nonuniformity of the rotational movement (on the basis of rpm or segment times) of the engine is mapped within the first order. According to the method, a permanent misfire at a cylinder is preliminarily detected when a first threshold value is exceeded by the amount of a first input feature signal and a detection signal for permanent misfires at several cylinders is active (and in this way, permanent misfires at several cylinders are recognized) when a threshold value is exceeded by the magnitude of further assigned input feature signals or by the magnitude of the first feature signal when a second threshold value is exceeded. The detection signal for permanent misfires at a cylinder is always switched to be inactive when there is an active detection signal for permanent misfire at several cylinders. When there is an inactive detection signal for permanent misfire at several cylinders, the preliminary detection signal for the permanent misfire at a cylinder becomes finally active and permanent misfires at a cylinder are recognized.
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Forster Jurgen
Lohmann Andrea
Ries-Muller Klaus
Ottesen Walter
Pipala Edward
Robert & Bosch GmbH
Zanelli Michael
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