Method and arrangement for detecting and documenting damage to a

Details Method and arrangement for detecting and documenting damage to a Method and arrangement for detecting and documenting damage to a

1996-10-18

1998-06-09

Dombroske, George M.

Measuring and testing

Simulating operating condition

Marine

60277, 73 2331, 731173, 701103, G01M 1500

Patent

active

057637717

ABSTRACT:
The invention is directed to a method for detecting and documenting damage to a catalytic converter in a motor vehicle having a fuel tank and an internal combustion engine wherein combustion misfires can occur when the level of fuel in the tank drops below a critical level. The method includes: detecting the level of fuel in the tank utilizing a fill-level sensor device; utilizing a circuit arrangement to determine when the level in the tank reaches the critical level and switching on a warning lamp to indicate that the critical level has been reached; storing a value corresponding to the critical level and the operating state of the warning lamp in a memory as a first set of data; detecting misfires of the engine and storing information as to the misfires in the memory as a second set of data; and, logically combining the first and second sets of data when the misfires are present at the same time as the critical fill level so that a determination can be made in the context of a later read out of the logically coupled data as to whether the misfires are associated with a level of the fuel corresponding to the critical level.

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"5 Series Owner's Manual", BMW Part No. 01419789737, pp. 4, 26, 66 and 93, .COPYRGT.1996.

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