Patent ID: 6446617
Filing Date: 2002-09-10
Classification: F02M

Abstract:
An induction manifold (1) for an internal-combustion engine, comprising an elongate main body (3) provided with longitudinal inner cavity (12) adapted to communicate, in operation, with a plurality of intake orifices of the engine, an inlet duct (5) provided with an air-inlet opening (15) and communicating with said cavity (12), and means (20) for feeding EGR gases into said inlet duct (5), characterised in that said means (20) for feeding EGR gases comprise a feed duct (20) formed integrally with said manifold (1) and comprising a first portion (21) extending inside said main body (3) and provided with an inlet orifice (22) for EGR gases at one end (10) of said main body (3), and a second portion (23) extending inside said inlet duct (5) and provided with an outlet opening (24) in said inlet duct (5), and baffle means (30) interposed between said air-inlet opening (15) of said inlet duct (15) and said outlet opening (24) of said feed duct (20) for directing the air and said EGR gases towards a mixing zone (39) inside said inlet duct (5) and situated at a predetermined distance (d) from said cavity (12) of said main body (3).