Device and method for controlling an exhaust gas recirculation rate of an exhaust gas recirculation device for internal combustion engines during lean operation

摘要

The invention relates to a device and a method for controlling an exhaust gas recirculation rate (EGR rate) of an exhaust gas recirculation device (EGR device) for internal combustion engines during lean operation, wherein an actuating variable of an EGR device, which is an adjustment or Maintaining a desired exhaust gas recirculation rate. DOLLAR A It is provided that a deviation of a calculated pollutant emission from a pollutant emission measured by a pollutant sensor in the exhaust line (14) of the internal combustion engine (10) is determined and a correction value for the manipulated variable of the actuating means (28) as a function of the amount of the deviation. the EGR device (12) is determined.