Process for controlling the intake of a direct-injection four-stroke engine

摘要

The present invention is a process for controlling the intake of a direct fuel injection four-stroke engine in at least two combustion chambers. A diferent intake for at least two cylinders or groups of cylinders is used in order to reduce exhaust emissions. A first cylinder or group of cylinders is operated with an air/fuel ratio greater than or equal to one, and a second cylinder or group of cylinders (21, 24) is operated in under-stoichiometric conditions.