Clocked fuel / air injection

Device for introducing air and fuel into the combustion chamber (1) of a spark-ignition internal combustion engine with an injection device (2) for fuel and an air supply device (2 '), which are controlled by a control device such that in a first portion (36) and in a second Abschnit (37) each include a fuel supply pulse (31, 32) and temporally offset therefrom a Luftaufuhrimpuls (26, 27) are generated, characterized in that at least three sections (36, 37, 38) are provided and in each section at least a fuel supply pulse (31 to 35) and then an air supply pulse occurs (up to 30 26) wherein the sections (36, 37, 38) spaced apart and between 0 ° KW 160 ° CA after BDC are placed.