Patent ID: 6220020
Filing Date: 2001-04-24
Classification: F01N,F02B,F02F,Y02T

Abstract:
An exhaust purification device for attachment an internal combustion engine comprising:a cylinder head;an exhaust gas port formed in said cylinder head and establishing an exhaust gas flow path;an exhaust gas induction guide formed in said exhaust gas port, said exhaust gas induction guide being a recess formed in a side wall of the exhaust gas port extending in an exhaust gas induction guide extension direction away from the exhaust gas flow path; anda secondary air supply passage formed in said cylinder head which opens to a first outer side of said cylinder head and to said exhaust gas induction guide to provide secondary air to said exhaust port, said secondary air supply passage extending in a secondary air supply direction, different than said exhaust gas induction guide extension direction, such that secondary air changes direction prior to exiting said secondary air supply passage at an interconnection of said secondary air supply passage and said exhaust gas induction guide.