Exhaust device of multi-cylinder engine

摘要

An exhaust device for a multi-cylinder engine for connecting both exhaust passage members with a communicating hole formed in each one when the two exhaust passage members are to be spaced apart. A base plate has a through hole communicating with the communicating hole and a cover plate for covering the outside of the base plate. The outer circumferential area of the through hole of the base plate overlaps the outer surface of the exhaust pipe with the entire outer circumferential area of the through hole is welded to the exhaust pipe. The edge portions on both sides of the cover plate are welded to the base plate so as to surround the outer side of the through hole. The area extending between edge portions on both sides of the cover plate is welded to the front and rear edge portions of the base plate.

主权项

1. In an exhaust device for a multi-cylinder engine in which a communicating hole is provided in each of two exhaust passage members disposed to be spaced apart and the communicating holes of the two exhaust passage members are jointed with each other so as to communicate, the exhaust device for the multi-cylinder engine comprising:
a base plate member having a through hole communicating with each of the communicating holes of said two exhaust passage members, wherein an entire outer circumferential area of each of said through holes is fixedly attached to said exhaust passage member wherein the outer circumferential area of each of the through holes overlaps the outer surface of the corresponding exhaust passage member; a cover plate member, wherein edge portions on both sides are fixedly attached to at least either one of said base plate member or said exhaust passage member so as to surround the outer side of each of the through holes of said base plate member; and areas extending between said edge portions on both sides are fixedly attached to the front and rear edge portions of said base plate member between said two exhaust passage members.