Exhaust Sensor Connector Flow-Drilling for Gas-Tight Mounting
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Solution Overview
Problem
Existing exhaust systems for internal combustion engines lack a simple and efficient method for arranging sensors to provide necessary information about exhaust gas temperature and composition without requiring complex preparations or additional openings in the system.
Innovation Solution
A process involving a metallic sensor-mounting connector with a connection area that penetrates into the exhaust gas-guiding component's wall through a flow-drill process, establishing a substance connection without the need for pre-drilled openings or welding, using a metallic material and rotation to melt and integrate with the wall, allowing for secure and gas-tight sensor placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional sensor mounting methods are used in exhaust systems, then sensors can be installed, but pre-drilled openings and welding operations are required, increasing manufacturing complexity and time
Solution Approach 1:
The invention changes the physical state of the connector material from solid to liquid through frictional heating during rotation, enabling the connector to penetrate and bond with the exhaust system wall without pre-drilled openings or separate welding operations. This parameter change resolves the contradiction by simplifying the mounting process while maintaining secure sensor installation capability.
Solution Approach 2:
The invention replaces traditional mechanical fastening methods (screws, clips, welding) with a friction-based melting and bonding process. The rotational friction heat generates sufficient temperature to melt both the connector and wall materials, creating a strong mechanical interlock that eliminates the need for separate fastening components or welding operations.
2Ease of operation
If pre-drilled openings are made in the exhaust system wall for sensor mounting, then sensors can be installed, but additional manufacturing steps and potential leakage points are created
Solution Approach 1:
The invention performs the opening formation and sensor mounting in a single integrated operation. The rotating connector simultaneously creates the opening and establishes the mounting connection through frictional heating and material bonding, eliminating the need for separate opening formation steps and reducing potential leakage points.
Solution Approach 2:
The invention merges the opening formation operation with the sensor mounting operation into a single friction-based process. The connector rotation simultaneously melts through the wall material and creates the bonding connection, combining multiple manufacturing steps into one operation that improves both ease of installation and manufacturing precision.
3Strength
If welding operations are performed to secure the sensor mounting connector, then a strong connection is achieved, but additional manufacturing time and complexity are required
Solution Approach 1:
The invention replaces thermal welding operations with a friction-based melting and bonding process. The rotational friction heat directly melts the connector and wall materials, creating a strong mechanical interlock through material fusion and interlocking geometry, eliminating the need for separate welding operations and reducing manufacturing time.
Solution Approach 2:
The invention enables the connector to create its own bonding connection through its own rotational motion and generated friction heat. The connector's rotation simultaneously melts through the wall, creates the opening, and establishes the bonding connection without requiring external welding equipment or additional operational steps, reducing manufacturing time while maintaining connection strength.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables straightforward and secure mounting of sensors in any desired position within the exhaust system, eliminating the need for pre-drilled openings or welding, while ensuring a gas-tight and stable connection, thus facilitating efficient pollutant emission monitoring and reduction.
Implementation Method 1
Based on the pressure and the rotation of the sensor-mounting connector and on the frictional interaction developing in the process between the sensor-mounting connector and the wall of the exhaust gas-guiding component, the wall of the exhaust gas-guiding component is primarily melted
Data Source
AI summary
A process for manufacturing an exhaust system, especially for an internal combustion engine of a vehicle, includes providing an exhaust gas-guiding component (26) with a wall (38) made of a metallic material and providing a sensor-mounting connector (22), to be fixed at the wall. The sensor-mounting connector includes a sensor-mounting area (28) to be positioned outside the exhaust gas-guiding component, and a connection area (34), which is to be positioned such that the connection area meshes with the wall. The connection area is pressed against an outer surface (40) of the wall of the exhaust gas-guiding component in a fastening area (39) of the wall, and at the same time rotated about a longitudinal axis (A) of the connector to penetrate into the material forming the wall and a connection in substance is established between the metallic material of the wall and the metallic material of the sensor-mounting connector.