Patent ID: 9546608
Date: 2017-01-17
CPC Classifications: F02D,G01M

Claim:
1. A method for cylinder equalization of a lambda-controlled internal combustion engine of a motor vehicle, comprising: trimming selected cylinders with respect to a mixture composition of metered fuel; detecting one of an uneven running or uneven running change of the internal combustion engine caused by the trimming of the selected cylinders, wherein the one of the uneven running or uneven running change is detected in a reference state of the internal combustion engine; detecting one of uneven runnings or uneven running changes during successive trimmings of the selected cylinders; and performing cylinder equalization on the basis of a comparison of the one of the uneven running or uneven running change detected in the reference state to the one of the uneven runnings or uneven running changes detected during the successive trimmings.