The present invention relates to a method of controlling an indirect-injection engine, notably a supercharged engine, in particular a spark-ignition engine, comprising at least one cylinder (
10) including a combustion chamber (
12), at least two air intake means (
14, 16) comprising each a pipe (
18, 20) controlled by an intake valve (
22, 24), at least one fuel injection means (
26, 28) associated with each intake means and at least one burnt gas exhaust means (
30) with an exhaust valve (
32), said engine running according to two intake modes, a mode with burnt gas scavenging and a mode without scavenging, characterized in that it consists in:
- supplying, in intake mode with scavenging, non-carbureted air through one (16) of the intake means then, in the vicinity of the scavenging end, in supplying carbureted air through the other (14) intake means,
- supplying, in intake mode without scavenging, carbureted air through the two intake means (14, 16).