Exhaust Valve Assembly With Spring-Guided Sealing Body
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Solution Overview
Problem
Conventional valves for motor vehicle exhaust pipes face challenges in achieving low leakage rates and are often complex, leading to increased component count and production costs.
Innovation Solution
A valve design featuring a housing body with a plunger and spring element that exerts both axial and radial forces to guide the closing body, eliminating the need for separate tappet bearings and reducing the number of components, while using a sleeve and shaft assembly with a self-locking connecting element for simplified assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional separate tappet bearings and multiple components are used, then the valve structure is stable, but the device complexity increases and production costs rise
Solution Approach 1:
The patent combines the tappet bearing function and sealing function into a single integrated closing body structure. The closing body includes both the sealing element and the bearing surface for the tappet, eliminating the need for separate tappet bearings and reducing the total number of components while maintaining both reliability and stability
2Manufacturing precision
If more components are used to ensure proper tappet guidance, then the valve guidance is more precise, but the device complexity increases
Solution Approach 1:
The closing body is designed as a multi-functional component that simultaneously provides sealing, tappet support, and radial guidance functions. The cylindrical outer surface of the closing body acts as both the sealing surface against the valve seat and the bearing surface for radial tappet guidance, eliminating the need for separate guidance components
3Ease of operation
If a longer tappet with separate bearings is used, then the tappet is better guided, but the valve size increases and compactness decreases
Solution Approach 1:
The patent merges the guidance function into the closing body itself, allowing the tappet to be guided radially by the closing body's cylindrical surface during its axial movement. This integration eliminates the need for a longer tappet with separate bearings, maintaining proper guidance while reducing the overall valve size and improving compactness
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
This design results in a more compact, reliable, and cost-effective valve with reduced error potential, achieving effective sealing and simplified production.
Implementation Method 1
The spring element is designed to exert an axial spring force and a radial spring force on the closing body
Data Source
Figure 1
Figure 2~4
Figure 5~7
AI summary
A valve for opening and closing an exhaust pipe comprises: - a housing body (200), - a plunger (4) arranged in the housing body (200), which can be coupled to an actuator at a first end (201) and is designed to be moved along a longitudinal axis (205) of the plunger (4), - a valve seat (9, 216) arranged in the housing body (200), which defines an opening (11, 217), and - a closing element (10, 218) which is connected to the plunger (4) so that the closing element (10, 218) can be adjusted by means of a movement of the plunger (4) between an open position, in which the opening (11, 217) is released, and a closed position, in which the closing element (10, 218) rests against the valve seat (9, 216) and seals the opening (11, 217), - a spring element (203, 219), which is fixed to the housing body (200) and which is fixed to the locking body (10, 218) to exert an axial spring force (204) and a radial spring force (206) on the locking body (10,218) to have an effect.,