Patent ID: 9523304
Filing Date: 2016-12-20
CPC Classification: F01N,F16L

Claim Text:
1. An exhaust pipe that forms an exhaust flow channel, the exhaust pipe comprising: a first flow channel member that forms part of the exhaust flow channel; and a second flow channel member that is connected in series with the first flow channel member and forms part of the exhaust flow channel, a downstream-side end of the first flow channel member being inserted into an upstream-side end of the second flow channel member, a communication channel that communicates between an inside and an outside of the exhaust pipe being formed between an outer surface of an insertion part of the first flow channel member and an inner surface of an insertion-receiving part of the second flow channel member, wherein the insertion-receiving part is arranged to face higher than a horizontal direction, and wherein the exhaust flow channel is a flow channel from an upstream side opening which is an opening formed on an upstream side of a connecting part between the first flow channel member and the second flow channel member to a downstream side opening which is an opening formed on a downstream side of the connecting part between the first flow channel member and the second flow channel member, and, when a flow channel length from the upstream-side opening to the downstream-side opening is L, a leading end of the insertion part of the first flow channel member is positioned away by a length of L/6 or more from each of the upstream-side opening and the downstream-side opening.