Patent ID: 8584656
Filing Date: 2013-11-19
Classification: F02M

Abstract:
1. A self-cooling exhaust gas injection device for distributing exhaust gases into an air intake distributor of an internal combustion engine, comprising: a return pipe injecting said exhaust gases into an interior of said intake distributor, said return pipe having an upstream end receiving exhaust gases and an opposing closed downstream end, said return pipe extending across at least a portion of an interior length of said distributor; and said return pipe including at least one outlet orifice, said outlet orifices distributing said injected gases into an intake air stream surrounding said return pipe within said intake distributor; wherein said intake air stream flows over and completely surrounds all sides of said return pipe with the exception of said upstream end; wherein said outlet orifices are configured and positioned to uniformly distribute said injected gases into said intake air stream to each intake cylinder riser pipe; wherein said return pipe comprises: