VERFAHREN UND RUECKKOPPLUNGS-REGELVORRICHTUNG FUER DIE RUECKFUEHRUNG VON AUSPUFFGASEN

摘要

An exhaust gas recirculation control system for an internal combustion engine, in which a feedback signal representing the amount of actually recirculated exhaust gas is produced by detecting the concentration of either CO2 or H2O, which is contained in the exhaust gas in a nearly constant concentration, in combustible gas mixture diluted with recirculated exhaust gas.