Patent ID: 7957889
Filing Date: 2011-06-07
Classification: F02D,F02M,Y02T

Abstract:
1. An adjustment system for balancing cylinders of an internal combustion engine, which system comprises cylinder-specific pressure sensors installable in the cylinders for measuring cylinder pressures and an adjustment unit arranged to determine a maximum pressure and knock value of each cylinder, wherein the adjustment unit is further arranged to determine a mean maximum pressure of the cylinders as a response to measurements of cylinder pressures, determine differences between the maximum pressure of each cylinder and the mean maximum pressure, compare the differences to a certain deviation range of the mean maximum pressure and the knock value to a certain knock limit value, control duration of the fuel injection of the cylinder in case the difference of the single cylinder exceeds the lower limit of the deviation range and the knock value of the cylinder is below the knock limit value or the difference of the cylinder exceeds the upper limit of the deviation range.