Exhaust pipe connection structure and exhaust pipe connection method

Abstract

An exhaust pipe connection structure for interconnecting a connection pipe and an exhaust pipe that are arranged in an exhaust system of an internal combustion engine. Either of the connection pipe and the exhaust pipe is inserted into the other, and the portion where the connection pipe and the exhaust pipe overlap each other is radially deformed for staking.

Description

technical field [0001] The present invention relates to an exhaust pipe connection structure and an exhaust pipe connection method for interconnecting an exhaust pipe and a connecting pipe arranged in an exhaust system of an internal combustion engine. Background technique [0002] Generally, in an exhaust system of an internal combustion engine, an exhaust manifold, a converter, and a muffler are arranged in a direction of exhaust gas flow and are each connected by an exhaust pipe. Each of the exhaust pipe and the converter, and the exhaust pipe and the muffler are connected by welding. [0003] However, welded connections are prone to stress concentration at the welded location. In order to have sufficient strength at the welded portion, it is necessary to provide the exhaust pipe with sufficient plate thickness. Accordingly, the problem of reducing the weight arises. Also, in order to stop exhaust leakage, the entire perimeter of the exhaust pipe must be welded. There...

AI Technical Summary

Problems solved by technology

The problem is that it takes time to process

The problem is that welding is not preferred in view of the working environment

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