Patent ID: 7909025
Filing Date: 2011-03-22
Classification: F01L,F02B,F02D,F02M,Y02T

Abstract:
1. A method of controlling an indirect-injection engine comprising at least one cylinder, each cylinder including a combustion chamber, at least two air intake means comprising each a pipe controlled by an intake valve, at least one fuel injection means associated with each intake means and at least one burnt gas exhaust means with an exhaust valve, said engine designed to run according to two intake modes, a mode with burnt gas scavenging and a mode without scavenging, characterized in that it comprises: supplying, in intake mode with scavenging during a portion of which only non-carbureted air is introduced into the at least one cylinder, non-carbureted air through one of the intake means then, in the vicinity of the scavenging end, in supplying carbureted air through the other intake means, supplying, in intake mode without scavenging, carbureted air through the two intake means.