Exhaust Gas Heater Cable Mounting for Insulated Positioning
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Solution Overview
Problem
Existing exhaust gas treatment arrangements for internal combustion engines face challenges in reliably maintaining the defined positioning and electrical insulation of connecting lines for heating units, leading to potential interference and damage during assembly and operation.
Innovation Solution
An exhaust gas treatment arrangement with a connecting cable mounting aid element made of electrically insulating material, featuring groove-like recesses and a mounting aid cover, ensures that connecting cables are held in a defined position and insulated, using fastening elements to secure the cables to the exhaust gas guide housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If connecting cables are left loose during assembly, then assembly process is simple and fast, but cable positioning is undefined and cables may interfere with each other or get damaged
Solution Approach 1:
The mounting aid element is pre-installed on the exhaust gas guide housing with positioning recesses prepared in advance. These recesses guide the connecting cables into their correct positions during assembly, ensuring defined positioning without complicating the assembly process. The preliminary preparation of the mounting aid eliminates the need for complex cable management during assembly.
2Reliability
If connecting cables are constrained in defined positions, then cable positioning reliability is improved, but assembly complexity increases due to additional mounting aid components
Solution Approach 1:
The mounting aid element serves as an intermediary component between the exhaust gas guide housing and the connecting cables. It provides positioning recesses that guide and secure the cables without requiring direct integration into the housing or complex cable routing mechanisms. This intermediary solution adds minimal complexity while ensuring reliable cable positioning.
Solution Approach 2:
The mounting aid element performs multiple functions: it provides positioning recesses for cable guidance, electrical insulation through its plastic material construction, and mechanical support for the connecting cables. By combining these functions in a single component, the overall device complexity is minimized while achieving reliable cable positioning.
3Area of stationary object
If connecting cables are positioned close together, then space utilization is improved, but electrical insulation between cables may be compromised
Solution Approach 1:
The mounting aid element is constructed from plastic material with inherent electrical insulating properties. This material parameter change ensures that even when cables are positioned close together in the positioning recesses, electrical insulation is maintained. The insulating material prevents electrical interference while allowing compact cable arrangement for efficient space utilization.
4Ease of operation
If connecting cables are exposed during operation, then accessibility for connection is improved, but cables are vulnerable to external influences and damage
Solution Approach 1:
The mounting aid element acts as a protective shell that encloses the connecting cables in their positioning recesses. This shell provides mechanical protection against external influences such as heat, chemicals, and physical damage while maintaining cable accessibility through the open structure of the mounting aid. The plastic material offers both protection and ease of connection.
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
The solution provides stable, defined positioning and enhanced electrical insulation of connecting cables, preventing interference and damage during assembly and operation, ensuring reliable electrical connections.
Implementation Method 1
The connecting cable mounting aid is constructed of electrically insulating material, preferably plastic
Implementation Method 2
This heating unit, when electrically excited, transfers heat to the gas flowing around it, particularly the exhaust gas emitted by an internal combustion engine
Implementation Method 3
transfers heat to the gas flowing around it
Implementation Method 4
This heat can then be transferred to the downstream exhaust aftertreatment unit, quickly bringing it up to the operating temperature required for a catalytic reaction
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An exhaust gas treatment arrangement for an exhaust system of an internal combustion engine comprises at least one electrically excitable heating unit (16) with a heating area (20) arranged in an exhaust gas guide housing (14) so as to be surrounded by exhaust gas and two connection areas (22, 24) passing through the exhaust gas guide housing (14) for connection to electrical connection lines (36, 38) running outside the exhaust gas guide housing (14), further comprising a connection line mounting aid element (60) fixed with respect to the exhaust gas guide housing (14) with at least one connection line positioning recess (76, 78) in a mounting aid element body (62) for receiving a connection line (36, 38) to be connected to one of the connection areas (22, 24).