Method and device for operating an internal combustion engine

Details Method and device for operating an internal combustion engine Method and device for operating an internal combustion engine

2011-06-14

2011-06-14

Kwon, John T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S104000

Reexamination Certificate

active

07962277

ABSTRACT:
During the operation of an internal combustion engine, a check is made whether the engine functions in an error-free manner in relation to the engine noise. If not, a current value of a cylinder-specific fuel quantity in a cylinder is determined. A check is made whether a current injected cylinder-specific fuel quantity in one of the cylinders is too low or high to check with respect to a cylinder-specific motor speed N_CYL, by comparing a current value of the cylinder-specific injection quantity in the relevant cylinder with a stored reference value of the cylinder-specific injection quantity of the relevant cylinder at the current operating point. A check with respect to the cylinder-specific motor speeds of one of the cylinders is deactivated, if the current injected cylinder-specific fuel quantity in the relevant cylinder is too low or high to check the relevant cylinder with respect to the cylinder-specific motor speed N_CYL.

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