Gas intake system for e.g. diesel engine, has one intake conduit comprising end section whose passage section has reduced area with respect to area of intake orifice, so that gas flow is concentrated in downstream portion of orifice

摘要

The system includes a gas intake conduit (30) comprising a downstream end section (58) whose passage section has a reduced area with respect to an area of a gas intake orifice (34), such that the gas flow is concentrated in a downstream portion (54) of the orifice. The intake orifice is situated in downstream with respect to a rotation direction of swirl of gas.